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ASE 0: Foundation Studies

CDX Tasksheet Number NATEF 2013 Tasksheet Title 2013 MLR NATEF Reference number; Priority Level 2013 AST NATEF Reference number; Priority Level 2013 MAST NATEF Reference number; Priority Level
Task Sheet Group Title Page A. General Safety      
C451 Identify general shop safety rules and procedures. 0A1; P-1 0A1; P-1 0A1; P-1
C456 Identify marked safety areas. 0A6; P-1 0A6; P-1 0A6; P-1
C458 Identify the location and the types of fire extinguishers and other fire safety equipment; demonstrate knowledge of the procedures for using fire extinguishers and other fire safety equipment. 0A7; P-1 0A7; P-1 0A7; P-1
C459 Identify the location and use of eye wash stations. 0A8; P-1 0A8; P-1 0A8; P-1
C460 Identify the location of posted evacuation routes. 0A9; P-1 0A9; P-1 0A9; P-1
C465 Locate and demonstrate knowledge of material safety data sheets (MSDS). 0A15; P-1 0A15; P-1 0A15; P-1
NN00 Shop Diagram N/A N/A N/A
Task Sheet Group Title Page B. General Safety: Personal Safety      
C461 Comply with the required safe use of safety glasses, ear protection, gloves, and shoes, during lab/shop activities. 0A10; P-1 0A10; P-1 0A10; P-1
C462 Identify and wear appropriate clothing for lab/shop activities. 0A11; P-1 0A11; P-1 0A11; P-1
C463 Secure hair and jewelry for lab/shop activities. 0A12; P-1  0A12; P-1  0A12; P-1 
Task Sheet Group Title Page C. General Safety: Tool Safety      
C466 Identify tools and their usage in automotive applications. 0B1; P-1  0B1; P-1  0B1; P-1 
C467 Identify standard and metric designation. 0B2; P-1 0B2; P-1 0B2; P-1
C452 Utilize safe procedures for handling of tools and equipment. 0A2; P-1  0A2; P-1  0A2; P-1 
C468 Demonstrate safe handling and use of appropriate tools. 0B3; P-1 0B3; P-1 0B3; P-1
C469 Demonstrate proper cleaning, storage, and maintenance of tools and equipment. 0B4; P-1 0B4; P-1 0B4; P-1
C896 Demonstrate proper use of precision measuring tools (i.e. micrometer, dial-indicator, dial-caliper). 0B5; P-1 0B5; P-1 0B5; P-1
Task Sheet Group Title Page D. General Safety: Vehicle Protection and Jack and Lift Safety      
C473 Identify purpose and demonstrate proper use of fender covers, mats. 0C2; P-1 0C2; P-1 0C2; P-1
C455 Utilize proper ventilation procedures for working within the lab/shop area. 0A5; P-1 0A5; P-1 0A5; P-1
C453 Identify and use proper placement of floor jacks and jack stands. 0A3; P-1 0A3; P-1 0A3; P-1
C454 Identify and use proper procedures for safe lift operation. 0A4; P-1 0A4; P-1 0A4; P-1
C476 Ensure vehicle is prepared to return to customer per school/company policy (floor mats, steering wheel cover etc). 0D1; P-1 0D1; P-1 0D1; P-1
Task Sheet Group Title Page E. General Safety: Vehicle, Customer, and Service Information      
C471 Proper vehicle identification information, Define the use and purpose of the VIN, engine numbers and data code, Locate VIN, Apply knowledge of VIN information. N/A N/A N/A
C472 Identify information needed and the service requested on a repair order. 0C1; P-1 0C1; P-1 0C1; P-1
C474 Demonstrate use of 3 C’s (concern, cause and correction). 0C3; P-1 0C3; P-1 0C3; P-1
C475 Review vehicle service history. 0C4; P-1 0C4; P-1 0C4; P-1
Task Sheet Group Title Page F. General Safety: SRS and ABS Safety      
C464 Demonstrate awareness of the safety aspects of supplemental restraint systems (SRS), electronic brake control systems, and hybrid vehicle high voltage circuits. 0A13; P-1 0A13; P-1 0A13; P-1
C895 Demonstrate awareness of the safety aspects of high voltage circuits (such as high intensity discharge (HID) lamps, ignitions systems, injection systems, etc.).  0A14; P-1 0A14; P-1 0A14; P-1
C590 Complete work order to include customer information, vehicle identifying information, customer concern, related service history, cause, and correction. 0C5; P-1 0C5; P-1 0C5; P-1

ASE 1: Engine Repair - (Top)

CDX Tasksheet Number NATEF 2013 Tasksheet Title 2013 MLR NATEF Reference number; Priority Level 2013 AST NATEF Reference number; Priority Level 2013 MAST NATEF Reference number; Priority Level
Task Sheet Group Title Page A. Engine Repair: Vehicle, Customer, and Service Infromation       
C885 Complete work order to include customer information, vehicle identifying information, customer concern, related service history, cause, and correction.   1A1; P-1  1A1; P-1 
C002 Research applicable vehicle and service information, such as internal engine operation, vehicle service history, service precautions, and technical service bulletins. 1A1; P-1  1A2; P-1  1A2; P-1 
C900 Identify hybrid vehicle internal combustion engine service precautions.  1A7; P-3 1A9; P-3 1A9; P-3
NN01 Demonstrate the use of the 3 Cs (concern, cause, and correction). N/A N/A N/A
Task Sheet Group Title Page B. Engine Repair: Fastener Repair       
C886 Perform common fastener and thread repair, to include: remove broken bolt, restore internal and external threads, and repair internal threads with thread insert. 1A6; P-1  1A7; P-1  1A7; P-1 
Task Sheet Group Title Page C. Engine Repair: Engine Mechanical Testing       
C004 Inspect engine assembly for fuel, oil, coolant, and other leaks; determine necessary action. 1A3; P-1 1A4; P-1 1A4; P-1
C898 Verify operation of the instrument panel engine warning indicators.  1A2; P-1  1A3; P-1 1A3; P-1
NN09 Perform cranking sound diagnosis. N/A N/A N/A
C392 Perform engine absolute (vacuum/boost) manifold pressure 8A2; P-1  8A5; P-1  8A5; P-1 
C393 Perform cylinder power balance test; determine necessary action. 8A3, P-2  8A6; P-2  8A6; P-2 
C709 Perform cylinder cranking and running compression tests; determine necessary action. 8A4; P-1  8A7; P-1  8A7; P-1 
C395 Perform cylinder leakage test; determine necessary action. 8A5; P-1  8A8; P-1  8A8; P-1 
Task Sheet Group Title Page D. Engine Repair: Engine Removal       
C671 Remove and reinstall engine in an OBDII or newer vehicle; reconnect all attaching components and restore the vehicle to running condition.    1A10; P-3 1A10; P-3 
Task Sheet Group Title Page E. Engine repair: Cylinder Head Removal, Inspection, and Installation       
C679 Remove, inspect or replace crankshaft vibration damper (harmonic balancer).   1C1; P-2  1C1; P-2 
C899 Remove and replace timing belt; verify correct camshaft timing. 1A5; P-1  1A6; P-1 1A6; P-1
C676 Inspect and replace camshaft and drive belt/chain includes checking drive gear wear and backlash, end play, sprocket and chain wear, overhead cam drive sprocket(s, drive belt(s), belt tension, tensioners, camshaft reluctor ring/tone-wheel, and  valve timing components; verify correct camshaft timing.   1B5; P-1  1B5; P-1 
C673 Remove cylinder head; inspect gasket condition; install cylinder head and gasket; tighten according to manufacturer’s specifications and procedures.   1B1; P-1  1B1; P-1 
C674 Clean and visually inspect a cylinder head for cracks; check gasket surface areas for warpage and surface finish; check passage condition.   1B2; P-1  1B2; P-1 
Task Sheet Group Title Page F. Engine Repair: Cylinder Head Dissasembly, Inspection, and Repair       
C021 Inspect pushrods, rocker arms, rocker arm pivots and shafts for wear, bending, cracks, looseness, and blocked oil passages (orifices); determine necessary action.   1B3; P-2 1B3; P-2
C722 Inspect valve lifters; determine necessary action.     1B12; P-2
C724 Inspect and/or measure camshaft for runout, journal wear and lobe wear.     1B13; P-2
C027 Inspect camshaft bearing surface for wear, damage, out-of-round, and alignment; determine necessary action.     1B14; P-3
C718 Inspect valve springs for squareness and free height comparison; determine necessary action.     1B7; P-3
C719 Inspect valve guides for wear; check valve stem-to-guide clearance; determine necessary action.     1B9; P-3
C720 Inspect valves and valve seats; determine necessary action.     1B10; P-3
C721 Check valve spring assembled height and valve stem height; determine necessary action.     1B11; P-3
C677 Establish camshaft position sensor indexing.   1B6; P-1 1B6; P-1
C723 Adjust valves (mechanical or hydraulic lifters). 1B1; P-1  1B4; P-1  1B4; P-1 
Task Sheet Group Title Page G. Engine Repair: Block Dissasembly, Inspection, and Repair       
C029 Disassemble engine block; clean and prepare components for inspection and reassembly.     1C2; P-1
C030 Inspect engine block for visible cracks, passage condition, core and gallery plug condition, and surface warpage; determine necessary action.     1C3; P-2
C726 Inspect and measure cylinder walls/sleeves for damage, wear, and ridges; determine necessary action.     1C4; P-2
C678 Inspect and measure piston skirts and ring lands; determine necessary action.     1C10; P-2
C727 Deglaze and clean cylinder walls.     1C5; P-2
C034 Inspect and measure camshaft bearings for wear, damage, out-of-round, and alignment; determine necessary action.     1C6; P-3
C730 Inspect auxiliary shaft(s) (balance, intermediate, idler, counterbalance or silencer); inspect shaft(s) and support bearings for damage and wear; determine necessary action; reinstall and time.     1C13; P-2
Task Sheet Group Title Page H. Engine Repair: Crankshaft and Oil Pump Service       
C728 Inspect crankshaft for straightness, journal damage, keyway damage, thrust flange and sealing surface condition, and visual surface cracks; check oil passage condition; measure end play and journal wear; check crankshaft position sensor reluctor ring (where applicable); determine necessary action.     1C7; P-1
C036 Inspect main and connecting rod bearings for damage and wear; determine necessary action.     1C8; P-2
C729 Identify piston and bearing wear patterns that indicate connecting rod alignment and main bearing bore problems; determine necessary action.     1C9; P-3
C733 Inspect oil pump gears or rotors, housing, pressure relief devices, and pump drive; perform necessary action.      1D13; P-2
Task Sheet Group Title Page I. Engine Repair: Assemble Engine Block       
C597 Determine piston-to-bore clearance.     1C11; P-2
C040 Inspect, measure, and install piston rings.     1C12; P-2
C731 Assemble engine block.     1C14; P-1
Task Sheet Group Title Page J. Engine Repair: Miscellaneous In-Vehicle Engine Tasks       
C541 Install engine covers using gaskets, seals, and sealers as required. 1A4; P-1 1A5; P-1 1A5; P-1
C596 Inspect, remove and replace engine mounts.   1A8; P-2  1A8; P-2
C675 Replace valve stem seals on an assembled engine; inspect valve spring retainers, locks/keepers, and valve lock/keeper grooves; determine necessary action.     1B8; P-3
Task Sheet Group Title Page K. Engine Repair: Lubrication System Service       
C737 Perform engine oil and filter change. 1C5; P-1 1D10; P-1 1D10; P-1
C732 Perform oil pressure tests; determine necessary action.   1D9; P-1 1D9; P-1
C736 Inspect, test, and replace oil temperature and pressure switches and sensors.   1D12; P-2 1D12; P-2
Task Sheet Group Title Page L. Engine Repair: Cooling System Service       
C578 Perform cooling system pressure and dye tests to identify leaks; check coolant condition and level; inspect and test radiator, pressure cap, coolant recovery tank, and heater core and galley plugs; determine necessary action. 1C1; P-1  1D1; P-1  1D1; P-1 
C734 Inspect, replace, and adjust drive belts, tensioners, and pulleys; check pulley and belt alignment. 1C2; P-1 1D3; P-1  1D3; P-1 
NN10 Inspect and replace engine cooling and heater
system hoses.		 N/A N/A N/A
C735 Remove, inspect,  and replace thermostat and gasket/seal. 1C3; P-1 1D7; P-1  1D7; P-1 
C050 Inspect and test coolant; drain and recover coolant; flush and refill cooling system with recommended coolant; bleed air as required. 1C4; P-1 1D4; P-1  1D4; P-1 
C680 Inspect, remove and replace water pump.   1D5; P-2 1D5; P-2
C052 Remove and replace radiator.   1D6; P-2 1D6; P-2
C053 Inspect and test fans(s) (electrical or mechanical), fan clutch, fan shroud, and air dams.   1D8; P-1 1D8; P-1
C871 Inspect auxiliary coolers; determine necessary action.   1D11; P-3 1D11; P-3
C598 Identify causes of engine overheating.   1D2; P-1 1D2; P-1 

ASE 2: Automatic Transmission and Transaxle - (Top)

CDX Tasksheet Number NATEF 2013 Tasksheet Title 2013 MLR NATEF Reference number; Priority Level 2013 AST NATEF Reference number; Priority Level 2013 MAST NATEF Reference number; Priority Level
Task Sheet Group Title Page A. Automatic transmission and Transaxle: Vehicle, Customer, and Service information       
C681 Research applicable vehicle and service information, fluid type, vehicle service history, service precautions, and technical service bulletins. 2A1; P-1  2A2; P-1 2A2; P-1
C599 Identify and interpret transmission/transaxle concern; differentiate between engine performance and transmission/transaxle concerns; determine necessary action.   2A1; P-1 2A1; P-1
C902 Check fluid level in a transmission or a transaxle equipped with a dip-stick.  2A2; P-1  2A4; P-1 2A4; P-1
C903 Check fluid level in a transmission or a transaxle not equipped with a dip-stick.  2A3; P-1 2A5; P-1 2A5; P-1
C904 Check transmission fluid condition; check for leaks.  2A4; P-2    
C682 Diagnose fluid loss and condition concerns; determine necessary action.   2A3; P-1 2A3; P-1
C907 Drain and replace fluid and filter(s). 2B4; P-1  2B4; P-1  2B4; P-1 
C606 Describe the operational characteristics of a continuously variable transmission (CVT) 2C1; P-3 2C4; P-3 2C4; P-3
C607 Describe the operational characteristics of a hybrid vehicle drive train. 2C2; P-3 2C5; P-3 2C5; P-3
C604 Remove and reinstall transmission/transaxle and torque converter; inspect engine core plugs, rear crankshaft seal, dowel pins, dowel pin holes, and mating surfaces.   2C1; P-1 2C1; P-1
C749 Inspect, leak test, and flush or replace transmission/transaxle oil cooler, lines, and fittings.   2C3; P-1 2C3; P-1
C605 Inspect converter flex (drive) plate, converter attaching bolts, converter pilot, converter pump drive surfaces, converter end play, and crankshaft pilot bore.   2C2; P-2 2C2; P-2
NN02 Demonstrate the use of the 3 Cs (concern, cause, and correction). N/A N/A N/A
Task Sheet Group Title Page B. Automatic transmission and Transaxle: Inspection and Testing       
C740 Perform pressure tests (including transmissions/transaxles equipped with electronic pressure control); determine necessary action.     2A6; P-1
C741 Perform stall test; determine necessary action.   2A6; P-3 2A8; P-3
C063 Perform lock-up converter system tests; determine necessary action.   2A7; P-3 2A9; P-3
Task Sheet Group Title Page C. Automatic Transmission and Transaxle: Diagnosis      
C600 Diagnose electronic transmission/transaxle control systems using appropriate test equipment and service information.     2A11; P-1
C601 Inspect, test, adjust, repair, or replace electrical/electronic components and circuits, including computers, solenoids, sensors, relays, terminals, connectors, switches, and harnesses.   2B3; P-1 2B3; P-1
C066 Diagnose transmission/transaxle gear reduction/multiplication concerns using driving, driven, and held member (power flow) principles.   2A8; P-1 2A10; P-1
C747 Diagnose pressure concerns in a transmission using hydraulic principles (Pascal’s Law).   2A9; P-2 2A12; P-2
C743 Diagnose noise and vibration concerns; determine necessary action.     2A7; P-2
Task Sheet Group Title Page D. Automatic Transmission and Transaxle: Maintenance and Repair       
C683 Inspect, adjust, and replace external manual valve shift linkage, transmission range sensor/switch, and park/neutral position switch. 2B1; P-2 2B1; P-2 2B1; P-2
C905 Inspect for leakage at external seals, gaskets, and bushings 2B2; P-2    
C748 Inspect for leakage; replace external seals, gaskets, and bushings.   2B2; P-2 2B2; P-2
C602 Inspect, replace and align powertrain mounts. 2B3; P-2 2B5; P-2 2B5; P-2
Task Sheet Group Title Page E. Automatic Transmission and Transaxle: Transmission Removal and Replacement       
C684 Disassemble, clean, and inspect transmission/transaxle.     2C6; P-2 
C688 Inspect, measure, and reseal oil pump assembly and components.     2C10; P-2 
C689 Measure transmission/transaxle end play or preload; determine necessary action.     2C11; P-1
C752 Inspect and measure planetary gear assembly components; determine necessary action.     2C15; P-2
C751 Inspect bushings; determine necessary action.     2C14; P-2
C750 Inspect, measure, and replace thrust washers and bearings.     2C12; P-2
C759 Inspect roller and sprag clutch, races, rollers, sprags, springs, cages, and retainers; determine necessary action.     2C22; P-2
C690 Inspect oil delivery circuits, including seal rings, ring grooves, and sealing surface areas, feed pipes, orifices, and check valves/balls.     2C13; P-2
C753 Inspect case bores, passages, bushings, vents, and mating surfaces; determine necessary action.     2C16; P-2
C686 Inspect servo and accumulator bores, pistons, seals, pins, springs, and retainers; determine necessary action.     2C8; P-2
C756 Inspect clutch drum, piston, check-balls, springs, retainers, seals, and friction and pressure plates, bands, and drums; determine necessary action.     2C19; P-2
C757 Measure clutch pack clearance; determine necessary action.     2C20; P-1
C758 Air test operation of clutch and servo assemblies.     2C21; P-1
C685 Inspect, measure, clean, and replace valve body (includes surfaces, bores, springs, valves, sleeves, retainers, brackets, checkvalves/balls, screens, spacers, and gaskets).     2C7; P-2
C754 Diagnose and Inspect transaxle drive, link chains, sprockets, gears, bearings, and bushings; perform necessary action.     2C17; P-2
C755 Inspect, measure, repair, adjust or replace transaxle final drive components.     2C18; P-2
Task Sheet Group Title Page F. Automatic Transmission and Transaxle: Assemble Transmission       
C083 Assemble transmission/transaxle.     2C9; P-2

ASE 3: Manual Drive Train & Axles - (Top)

CDX Tasksheet Number NATEF 2013 Tasksheet Title 2013 MLR NATEF Reference number; Priority Level 2013 AST NATEF Reference number; Priority Level 2013 MAST NATEF Reference number; Priority Level
Task Sheet Group Title Page A. Manual Drive Train and Axles: Vehicle, Customer, and Service Information       
C102 Research applicable vehicle and service information, fluid type, vehicle service history, service precautions, and technical service bulletins. 3A1; P-1  3A2; P-1  3A2; P-1 
C101 Identify and interpret drive train concerns; determine necessary action.   3A1; P-1 3A1; P-1
C611 Describe the operational characteristics of an electronically controlled manual transmission/transaxle. 3C1; P-3 3C2; P-3 3C2; P-3
NN03 Demonstrate use of 3 Cs (concern, cause, and correction). N/A N/A N/A
Task Sheet Group Title Page B. Manual Drive Train and Axles: Transmission/Transaxle Maintenance       
C901 Check fluid condition; check for leaks. 3A3; P-2     
C691 Check fluid condition; check for leaks; determine necessary action    3A3; P-1  3A3; P-1 
C105 Drain and refill manual transmission/transaxle and final drive unit. 3A2; P-1  3A4; P-1  3A4; P-1 
Task Sheet Group Title Page C. Manual Drive Train and Axles: Clutch Maintenance       
C107 Inspect clutch pedal linkage, cables, automatic adjuster mechanisms, brackets, bushings, pivots, and springs; perform necessary action.   3B2; P-1  3B2; P-1 
C908 Check and adjust clutch master cylinder fluid level. 3B1; P-1    
C909 Check for system leaks. 3B2; P-1    
C938 Check and adjust clutch master cylinder fluid level; check for leaks.   3B5; P-1 3B5; P-1
C111 Bleed clutch hydraulic system.   3B4; P-1  3B4; P-1 
Task Sheet Group Title Page D. Manual Drive Train and Axles: Clutch Diagnosis and Repair.       
C106 Diagnose clutch noise, binding, slippage, pulsation, and chatter; determine necessary action.   3B1; P-1  3B1; P-1 
C848 Measure flywheel runout and crankshaft end play; determine necessary action.   3B7; P-2  3B7; P-2 
C847 Inspect flywheel and ring gear for wear and cracks; determine necessary action.   3B6; P-1 3B6; P-1 
C608 Inspect and replace clutch pressure plate assembly, clutch disc, release (throw-out) bearing and linkage, and pilot bearing/bushing (as applicable).   3B3; P-1  3B3; P-1 
Task Sheet Group Title Page E. Manual Drive Train and Axles: Transmission/ Transaxle Diagnosis       
C609 Diagnose noise concerns through the application of transmission/transaxle powerflow principles.     3C3; P-2 
C693 Diagnose hard shifting and jumping out of gear concerns; determine necessary action.     3C4; P-2 
C887 Diagnose transaxle final drive assembly noise and vibration concerns; determine necessary action.     3C5; P-3 
Task Sheet Group Title Page F. Manual Drive Train and Axles: Transmission/ Transaxle Repair       
C768 Inspect, adjust, and reinstall shift linkages, brackets, bushings, cables, pivots, and levers.   3C1; P-2  3C1; P-2 
C910 Disassemble, inspect, clean, and reassemble internal transmission/transaxle components.     3C6; P-3
Task Sheet Group Title Page G. Manual Drive Train and Axles: Drive Shaft, Half Shaft, Universal, and Constant-Velocity Joint Diagnosis and Repair       
C132 Diagnose constant-velocity (CV) joint noise and vibration concerns; determine necessary action.   3D1; P-1  3D1; P-1 
C849 Inspect, service, and replace shafts, yokes, boots, and universal/CV joints. 3D2; P-2 3D4; P-1  3D4; P-1 
C134 Inspect, remove and replace front wheel drive (FWD) bearings, hubs, and seals. 3D1; P-2  3D3; P-1  3D3; P-1 
C133 Diagnose universal joint noise and vibration concerns; perform necessary action.   3D2; P-2 3D2; P-2
C779 Check shaft balance and phasing; measure shaft runout; measure and adjust driveline angles.   3D5; P-2  3D5; P-2 
Task Sheet Group Title Page H. Manual Drive Train and Axles: Drive Axle Diagnosis and Repair      
C911 Check and adjust differential housing fluid level.  3E2; P-1 3E1: 2; P-1  3E1: 2; P-1 
C912 Drain and refill differential housing.  3E3; P-1 3E1: 3; P-1  3E1: 3; P-1 
C785 Clean and inspect differential housing; check for leaks; inspect housing vent. 3E1; P-2 3E1: 1; P-2 3E1: 1; P-2
C889 Inspect and replace companion flange and pinion seal; measure companion flange runout.   3E1: 4; P-2 3E1: 5; P-2
C138 Diagnose noise and vibration concearns; determine necessary action      1E1: 4; P-2 
C780 Inspect ring gear and measure runout; determine necessary action.     3E1: 6; P-3
C890 Remove, inspect, and reinstall drive pinion and ring gear, spacers, sleeves, and bearings.     3E1: 7; P-3
C147 Disassemble, inspect, measure, and adjust or replace differential pinion gears (spiders), shaft, side gears, side bearings, thrust washers, and case.     3E1:12; P-3
C781 Measure and adjust drive pinion depth.     3E1: 8; P-3
C782 Measure and adjust drive pinion bearing preload.     3E1: 9; P-3
C148 Reassemble and reinstall differential case assembly; measure runout; determine necessary action.     3E1:13; P-3
C145 Measure and adjust side bearing preload and ring and pinion gear total backlash and backlash variation on a differential carrier assembly (threaded cup or shim types).     3E1:10; P-3
C783 Check ring and pinion tooth contact patterns; perform necessary action.     3E1:11; P-3
Task Sheet Group Title Page I. Manual Drive Train and Axles: Limited Slip Differential       
C784 Diagnose noise, slippage, and chatter concerns; determine necessary action.     3E2:1; P-3
C786 Measure rotating torque; determine necessary action.     3E2:2; P-3
Task Sheet Group Title Page J. Manual Drive Train and Axles: Drive Axle Shaft       
C153 Diagnose drive axle shafts, bearings, and seals for noise, vibration, and fluid leakage concerns; determine necessary action.     3E3:5; P-2
C154 Inspect and replace drive axle wheel studs. 3E1:1; P-2  3E2:1; P-1  3E3:1; P-1
C850 Measure drive axle flange runout and shaft end play; determine necessary action.   3E2:4; P-2 3E3:4; P-2
C155 Remove and replace drive axle shafts.   3E2:2; P-1 3E3:2; P-1
C156 Inspect and replace drive axle shaft seals, bearings, and retainers.   3E2:3; P-2  3E3:3; P-2
Task Sheet Group Title Page K. Manual Drive Train and Axles: Four-Wheel Drive/ All-Wheel Drive Component Diagnosis and Repair       
C787 Diagnose noise, vibration, and unusual steering concerns; determine necessary action.     3F5; P-3 
C788 Inspect, adjust, and repair shifting controls (mechanical, electrical, and vacuum), bushings, mounts, levers, and brackets.   3F1; P-3 3F1; P-3
C875 Disassemble, service, and reassemble transfer case and components.     3F7; P-3
C913 Inspect front-wheel bearings and locking hubs  3F1: P-3     
C876 Inspect front-wheel bearings and locking hubs; perform necessary action(s).   3F2; P-3 3F2; P-3
C914 Check for leaks at drive assembly seals; check vents; check lube level.  3F2; P-2 3F3; P-3 3F3; P-3
C878 Diagnose, test, adjust, and replace electrical/electronic components of four-wheel drive systems.     3F6; P-3
C613 Identify concerns related to variations in tire circumference and/or final drive ratios.   3F4; P-3  3F4; P-3 

ASE 4: Suspension and Steering - (Top)

CDX Tasksheet Number NATEF 2013 Tasksheet Title 2013 MLR NATEF Reference number; Priority Level 2013 AST NATEF Reference number; Priority Level 2013 MAST NATEF Reference number; Priority Level
Task Sheet Group Title Page A. Suspension and Steering Systems: Vehicle,
Customer, and Service Information		      
C851 Identify and interpret suspension and steering system concerns; determine necessary action.      4A2; P-1 
C166 Research applicable vehicle and service information, such as suspension and steering system operation, vehicle service history, service precautions, and technical service bulletins. 4A1; P-1  4A1; P-1  4A1; P-1 
NN04 Demonstrate use of 3 Cs (concern, cause, correction).     N/A
Task Sheet Group Title Page B. Suspension and Steering Systems: Wheel and Tire Maintenance       
C619 Inspect tire condition; identify tire wear patterns; check for correct tire size and application (load and speed ratings) and adjust air pressure; determine necessary action. 4D1; P-1  4F1; P-1  4F1; P-1 
C222 Rotate tires according to manufacturer’s recommendations. 4D2; P-1  4F3; P-1  4F3; P-1 
C620 Dismount, inspect, and remount tire on wheel; Balance wheel and tire assembly (static and dynamic). 4D3; P-1  4F6; P-1  4F6; P-1 
C936 Demonstrate knowledge of steps required to remove and replace sensors in a tire pressure monitoring system.  4D8; P-2  4F11: P-1  4F11: P-1 
C621 Dismount, inspect, and remount tire on wheel equipped with tire pressure monitoring system sensor. 4D4; P-2  4F7; P-2  4F7; P-2 
Task Sheet Group Title Page C. Suspension and Steering Systems: Wheel and Tire Diagnosis       
C580 Inspect tire and wheel assembly for air loss; perform necessary action. 4D5; P-1 4F8; P-1 4F8; P-1 
C552 Repair tire using internal patch. 4D6; P-1  4F9; P-1  4F9; P-1 
C701 Measure wheel, tire, axle flange, and hub runout; determine necessary action.   4F4; P-2  4F4; P-2 
C935 Identify and test tire pressure monitoring systems (indirect and direct) for operation; verify operation of instrument panel lamps.  4D7; P-2  4F10; P-2   
C937 Identify and test tire pressure monitoring systems (indirect and direct) for operation; calibrate ststem; verify operation of instrument panel lamps.      4F10; P-2 
C855 Diagnose wheel/tire vibration, shimmy, and noise; determine necessary action.   4F2; P-2  4F2; P-2 
C796 Diagnose tire pull problems; determine necessary action.   4F5; P-2  4F5; P-2 
Task Sheet Group Title Page D. Suspension and Steering Systems: Power Steering Pump Maintenance and Service       
C177 Determine proper power steering fluid type; inspect fluid level and condition. 4B2; P-1 4B9; P-1 4B9; P-1
C182 Replace power steering pump filter(s).  N/A N/A N/A
C178 Flush, fill, and bleed power steering system. 4B3; P-2 4B10; P-2  4B10; P-2 
C180 Remove, inspect, replace, and adjust power steering pump belt. 4B5; P-1 4B12; P-1 4B12; P-1
C179 Inspect for power steering fluid leakage; determine necessary action.  4B4; P-1 4B11; P-1 4B11; P-1
C183 Inspect and replace power steering hoses and fittings. 4B6; P-2 4B15; P-2  4B15; P-2 
C181 Remove and reinstall power steering pump.   4B13; P-2  4B13; P-2 
C699 Remove and reinstall press fit power steering pump pulley; check pulley and belt alignment.   4B14; P-2  4B14; P-2 
Task Sheet Group Title Page E. Suspension and Steering Systems: Steering Gear Service       
C933 Inspect  rack and pinion steering gear inner tie rod ends (sockets) and bellows boots. 4B1; P-1     
C883 Inspect  rack and pinion steering gear inner tie rod ends (sockets) and bellows boots; replace as needed   4B8; P-2  4B8; P-2 
C882 Remove and replace rack and pinion steering gear; inspect mounting bushings and brackets.   4B7; P-2  4B7; P-2 
Task Sheet Group Title Page F. Suspension and Steering Systems: Steering Linkage Service       
C918 Inspect pitman arm, relay (centerlink/intermediate) rod, idler arm and mountings, and steering linkage damper. 4B7; P-1     
C916 Inspect tie rod ends (sockets), tie rod sleeves, and clamps  4B8; P-1    
C184 Inspect and replace  pitman arm, relay (centerlink/intermediate) rod, idler arm and mountings, and steering linkage damper.   4B16; P-2  4B16; P-2 
C185 Inspect, replace and adjust tie rod ends (sockets), tie rod sleeves, and clamps.   4B17; P-1  4B17; P-1 
Task Sheet Group Title Page G. Suspension and Steering Systems: Steering Gear Diagnosis       
C884 Diagnose power steering gear (non-rack and pinion) binding, uneven turning effort, looseness, hard steering, and noise concerns; determine necessary action.   4B4; P-2  4B4; P-2 
C880 Diagnose power steering gear (rack and pinion) binding, uneven turning effort, looseness, hard steering, and noise concerns; determine necessary action.   4B5; P-2  4B5; P-2 
Task Sheet Group Title Page H. Suspension and Steering Systems: Steering Column Service       
C168 Disable and enable supplemental restraint system (SRS). 4A2; P-1  4B1; P-1  4B1; P-1 
C169 Remove and replace steering wheel; center/time supplemental restraint system (SRS) coil (clock spring).   4B2; P-1  4B2; P-1 
C173 Inspect steering shaft universal-joint(s), flexible coupling(s), collapsible column, lock cylinder mechanism, and steering wheel; perform necessary action.   4B6; P-2  4B6; P-2 
C170 Diagnose steering column noises, looseness, and binding concerns (including tilt mechanisms); determine necessary action.   4B3; P-2  4B3; P-2 
Task Sheet Group Title Page I. Suspension and Steering Systems: Front Suspension Service-Long and Short Arm      
C925 Inspect and replace front stabilizer bar (sway bar) bushings, brackets, and links.  4B15; P-1     
C923 Inspect suspension system coil springs and spring insulators (silencers).  4B13; P-1    
C920 Inspect upper and lower control arms, bushings, and shafts.  4B9; P-1    
C919 Inspect and replace rebound and jounce bumpers.  4B10; P-1     
C922 Inspect upper and lower ball joints (with or without wear indicators).  4B12; P-1     
C793 Inspect, remove and install stabilizer bar (sway bar) bushings, brackets, and links.   4C9; P-3  4C9; P-3 
C193 Inspect, remove and install short and long arm suspension system coil springs and spring insulators.   4C7; P-3  4C7; P-3 
C192 Inspect, remove and install steering knuckle assemblies.   4C6; P-3  4C6; P-3 
C790 Inspect, remove and install upper and lower control arms, bushings, shafts, and rebound bumpers.   4C3; P-3 4C3; P-3
C791 Inspect, remove and install strut rods and bushings.   4C4; P-3  4C4; P-3 
C792 Inspect, remove and install upper and/or lower ball joints(with or without wear indicators).   4C5; P-2  4C5; P-2 
Task Sheet Group Title Page J. Suspension and Steering Systems: Font Suspension Service-Strut and Torsion Bar       
C926 Inspect strut cartridge or assembly.  4B16; P-1    
C927 Inspect front strut bearing and mount.  4B17; P-1    
C921 Inspect track bar, strut rods/radius arms, and related mounts and bushings.  4B11; P-1    
C924 Inspect suspension system torsion bars and mounts.  4B14; P-1    
C794 Inspect, rempove and install strut cartridge or assembly, strut coil spring, insulators (silencers), and upper strut bearing mount.   4C10; P-3  4C10; P-3 
C934 Inspect, remove and install track bar, strut rods/radius arms, and related mounts and bushings.    4C11; P-3 4C11; P-3
C194 Inspect, remove and install torsion bars and mounts.   4C8; P-3  4C8; P-3 
Task Sheet Group Title Page K. Suspension and Steering Systems: Front-Suspension Diagnosis       
C852 Diagnose short and long arm suspension system noises, body sway, and uneven ride height concerns; determine necessary action.   4C1; P-1  4C1; P-1 
C853 Diagnose strut suspension system noises, body sway, and uneven ride height concerns; determine necessary action.   4C2; P-1  4C2; P-1 
Task Sheet Group Title Page L. Suspension and Steering Systems: Rear Suspension Service       
C202 Inspect, remove, and replace shock absorbers; inspect mounts and bushings.  4B20; P-1 4D1; P-1  4D1; P-1 
C928 Inspect rear suspension system lateral links/arms (track bars), control (trailing) arms.  4B18; P-1    
C929 Inspect rear suspension system leaf spring(s), spring insulators (silencers), shackles, brakets, bushings, ccenter pinks/bolts, and mounts.  4B19; P-1    
C854 Inspect rear suspension system leaf spring(s), bushings, center pins/bolts, and mounts.    4C12; P-1 4C12; P-1
C203 Remove, inspect, and service or replace front and rear wheel bearings.   4D2; P-1  4D2; P-1 
Task Sheet Group Title Page M. Suspension and Steering Systems: Electronically Controlled Steering and Suspension Service       
C700 Inspect  electric power assist steering. 4B21; P-3  4B19; P-3  4B20; P-3 
C186 Test and diagnose components of electronically controlled steering systems using a scan tool; determine necessary action.      4B18; P-3
C931 Describe the function of the power steering pressure switch.  4B23; P-3 4D3; P-3  4D3; P-3 
C551 Identify hybrid vehicle power steering system electrical circuits and safety precautions. 4B22; P-2  4B18; P-2  4B19; P-2 
Task Sheet Group Title Page N. Suspension and Steering Systems: Wheel Alignment Diagnosis, Adjustment, and Repair        
C206 Diagnose vehicle wander, drift, pull, hard steering, bump steer, memory steer, torque steer, and steering return concerns; determine necessary action.   4E1; P-1  4E1; P-1 
C939 Perform prealignment inspection and measure vehicle ride height; determine necessary action.  4C1; P-1     
C617 Perform prealignment inspection and measure vehicle ride height; perform necessary action.   4E2; P-1  4E2; P-1 
C618 Prepare vehicle for wheel alignment on the alignment machine; perform four wheel alignment by checking and adjusting front and rear wheel caster, camber; and toe as required; center steering wheel.   4E3; P-1  4E3; P-1 
C213 Check toe-out-on-turns (turning radius); determine necessary action.   4E4; P-2  4E4; P-2 
C214 Check SAI (steering axis inclination) and included angle; determine necessary action.   4E5; P-2  4E5; P-2 
C216 Check rear wheel thrust angle; determine necessary action.   4E6; P-1  4E6; P-1 
C217 Check for front wheel setback; determine necessary action.   4E7; P-2  4E7; P-2 
C795 Check front and/or rear cradle (subframe) alignment; determine necessary action.   4E8; P-3  4E8; P-3 
C940 Reset steering angle sensor   4E9; P-2  4E9; P-2 

ASE 5: Brakes - (Top)

CDX Tasksheet Number NATEF 2013 Tasksheet Title 2013 MLR NATEF Reference number; Priority Level 2013 AST NATEF Reference number; Priority Level 2013 MAST NATEF Reference number; Priority Level
Task Sheet Group Title Page A. Brakes: Vehicle, Customer, and Service Information       
C230 Research applicable vehicle and service information, such as brake system operation, vehicle service history, service precautions, and technical service bulletins. 5A1; P-1  5A2; P-1  5A2; P-1 
C229 Identify and interpret brake system concerns; determine necessary action.   5A1; P-1  5A1; P-1 
C944 Describe procedure for performing a road test to check brake system operation, including an anti-lock brake system (ABS). 5A2; P-1  5A3; P-1  5A3; P-1 
NN05 Demonstrate use of 3 Cs (concern, cause, and correction). N/A N/A N/A
Task Sheet Group Title Page B. Brakes: Fluid Testing and Maintenance       
C239 Select, handle, store, and fill brake fluids to proper level. 5B4; P-1  5B9; P-1  5B9; P-1 
C625 Test brake fluid for contamination. 5B7; P-1  5B13; P-1  5B13; P-1 
C705 Bleed and/or flush brake system. 5B6; P-1  5B12; P-1  5B12; P-1 
Task Sheet Group Title Page C. Brakes: Master Cylinder Testing and Service       
C622 Measure brake pedal height, travel, and free play (as applicable); determine necessary action. 5B1; P-1  5B2; P-1  5B2; P-1 
C946 Check master cylinder for external leaks and proper operation.  5B2; P-1     
C704 Check master cylinder for internal/external leaks and proper operation; determine necessary action.   5B3; P-1  5B3; P-1 
C235 Remove, bench bleed, and reinstall master cylinder.   5B4; P-1  5B4; P-1 
C556 Measure and adjust master cylinder pushrod length.   5E5; P-3  5E5; P-3 
Task Sheet Group Title Page D. Brakes: Brake Lines and Hoses Inspection and Repair      
C237 Inspect brake lines, flexible hoses, and fittings for leaks, dents, kinks, rust, cracks, bulging, wear; tighten loose fittings and supports; determine necessary action. 5B3; P-1  5B6; P-1  5B6; P-1 
C623 Replace brake lines, hoses, fittings, and supports.   5B7; P-2  5B7; P-2 
C624 Fabricate brake lines using proper material and flaring procedures (double flare and ISO types).   5B8; P-2  5B8; P-2 
Task Sheet Group Title Page E. Brakes: Disc Brake Inspection, Maintenance, and Service       
C708 Diagnose poor stopping, noise, vibration, pulling, grabbing, dragging or pulsation concerns; determine necessary action.   5D1; P-1 5D1; P-1
C802 Remove and clean  caliper assembly; inspect for leaks and damage/wear to caliper housing; determine necessary action. 5D1; P-1 5D2; P-1 5D2; P-1
C803 Clean and inspect caliper mounting and slides/pins for proper operation, wear, and damage; determine necessary action. 5D2; P-1 5D3; P-1 5D3; P-1
C632 Check brake pad wear indicator; determine necessary action.  5D10; P-2 5D11; P-2 5D11; P-2
C627 Remove, inspect and replace pads and retaining hardware; determine necessary action. 5D3; P-1 5D4; P-1 5D4; P-1
C805 Reasasemble, lubricate, and reinstall seat pads and caliper, pads, and related hardware; inspect for leaks. 5D4; P-1 5D5; P-1 5D5; P-1
C251 Install wheel and torque lug nuts. 5A3; P-1  5A4; P-1  5A4; P-1 
C631 Retract and re-adjust caliper piston on an integral parking brake system.  5D9; P-3 5D10; P-3 5D10; P-3
C948 Describe importance of operating vehicle to burnish/break-in replacement brake pads according to manufacturer's recommendations. 5D11; P-1 5D12; P-1 5D12; P-1
Task Sheet Group Title Page F. Brakes: Rotor Inspection and Service       
C628 Clean and inspect rotor; measure rotor thickness, thickness variation, and lateral runout; determine necessary action 5D5; P-1  5D6; P-1  5D6; P-1 
C806 Remove and reinstall rotor. 5D6; P-1  5D7; P-1  5D7; P-1 
C630 Refinish rotor off vehicle; measure final rotor thickness and compare with specifications.  5D8; P-1  5D9; P-1  5D9; P-1 
C629 Refinish rotor on vehicle; measure final rotor thickness and compare with specifications. 5D7; P-1  5D8; P-1  5D8; P-1 
C274 Inspect and replace wheel studs. 5F6; P-1  5F7; P-1  5F8; P-1 
Task Sheet Group Title Page G. Brakes Drum Brake Inspection, Maintenance, and Service       
C706 Diagnose poor stopping, noise, vibration, pulling, grabbing, dragging or pedal pulsation concerns; determine necessary action.   5C1; P-1  5C1; P-1 
C800 Remove, clean, inspect, and measure brake drum diameter; determine necessary action. 5C1; P-1  5C2; P-1  5C2; P-1 
C626 Refinish brake drum and measure final drum diameter; compare with specifications. 5C2; P-1  5C3; P-1  5C3; P-1 
C248 Remove, clean, and inspect brake shoes, springs, pins, clips, levers, adjusters/self-adjusters, other related brake hardware, and backing support plates; lubricate and reassemble. 5C3; P-1 5C4; P-1  5C4; P-1 
C707 Inspect wheel cylinders for leaks and proper operation; remove and replace as needed. 5C4; P-2  5C5; P-2  5C5; P-2 
C801 Pre-adjust brake shoes and parking brake; install brake drums or drum/hub assemblies and wheel bearings; make final checks and adjustments. 5C5; P-2  5C6; P-2  5C6; P-2 
C251 Install wheel and torque lug nuts. 5A3; P-1  5A4; P-1  5A4; P-1 
Task Sheet Group Title Page H. Brakes: Parking Brake Inspection and Service       
C811 Check parking brake cables and components for wear, binding, and corrosion; clean, lubricate, adjust or replace as needed. 5F2; P-2  5F3; P-2  5F3; P-2 
C633 Check parking brake operation and parking brake indicator light system operation; determine necessary action. 5F3; P-1 5F4; P-1  5F4; P-1 
Task Sheet Group Title Page I. Brakes: Power Booster Inspection       
C807 Check brake pedal travel with, and without, engine running to verify proper power booster operation.  5E1; P-2  5E1; P-2  5E1; P-2 
C808 Check vacuum supply(manifold or auxiliary pump) to vacuum-type power booster. 5E2; P-1  5E2; P-1  5E2; P-1 
C809 Inspect the vacuum-type power booster unit for leaks; inspect the check valve for proper operation; determine necessary action.   5E3; P-1  5E3; P-1 
C581 Inspect and test hydraulically assisted power brake system for leaks and proper operation; determine necessary action.   5E4; P-3  5E4; P-3 
Task Sheet Group Title Page J. Brakes: Hydraulic System Diagnosis and Service       
C894 Diagnose pressure concerns in the brake system using hydraulic principles (Pascal’s Law).   5B1; P-1  5B1; P-1 
Task Sheet Group Title Page J. Brakes: Hydraulic System Diagnosis and Service cont.      
C236 Diagnose poor stopping, pulling or dragging concerns caused by malfunctions in the hydraulic system; determine necessary action.   5B5; P-3 5B5; P-3
Task Sheet Group Title Page K. Brakes: Wheel Bearing Inspection, Maintenance, and Service       
C810 Remove, clean, inspect, repack, and install wheel bearings; replace seals; install hub and adjust bearings. 5F1; P-1  5F2; P-1  5F2; P-1 
C273 Replace wheel bearing and race. 5F5; P-2  5F6; P-2  5F6; P-2 
C275 Remove and reinstall sealed wheel bearing assembly.   5F8; P-2  5F7; P-2 
C267 Diagnose wheel bearing noises, wheel shimmy, and vibration concerns; determine necessary action.   5F1; P-3  5F1; P-3 
Task Sheet Group Title Page L. Brakes: Brake Warning Light and Stop Light inspection and Service       
C272 Check operation of brake stop light system; determine necessary action  5F4; P-1  5F5; P-1  5F5; P-1 
C947 Identify components of the brake warning light system 5B5; P-3  5B11; P-2  5B11; P-2 
C242 Inspect, test, and/or replace components of brake warning light system.   5B10; P-3  5B10; P-3 
Task Sheet Group Title Page M. Brakes: Electronic Brake Control Maintenance and Service       
C857 Identify traction control/vehicle stability control system components.  5G1; P-3  5G2; P-3  5G2; P-3 
C634 Identify and inspect electronic brake control system components; determine necessary action.   5G1; P-1  5G1; P-1 
C950 Describe the operation of a regenerative braking system.  5G2; P-3  5G3; P-3  5G3; P-3 
Task Sheet Group Title Page N. Brakes: Electronic Brake Control Hydraulic Service       
C812 Depressurize high-pressure components of the electronic brake control system.     5G6; P-3 
C637 Bleed the electronic brake control system hydraulic circuits.     5G7; P-1 
Task Sheet Group Title Page O. Brakes: Electronic Brake Control Diagnosis       
C635 Diagnose poor stopping, wheel lock-up, abnormal pedal feel, unwanted application, and noise concerns associated with the electronic brake control system ; determine necessary action.     5G4; P-2 
C636 Diagnose electronic brake control system electronic control(s) and components by retrieving diagnostic trouble codes, and/or using recommended test equipment; determine necessary action.     5G5; P-2 
C639 Test, diagnose, and service electronic brake control system speed sensors (digital and analog), toothed ring (tone wheel), and circuits using a graphing multimeter (GMM)/digital storage oscilloscope (DSO) (includes output signal, resistance, shorts to voltage/ground, and frequency data).     5G8; P-3 
C813 Diagnose electronic brake control system braking concerns caused by vehicle modifications (tire size, curb height, final drive ratio, etc.).     5G9; P-3

ASE 6: Electrical/Electronic Systems - (Top)

CDX Tasksheet Number NATEF 2013 Tasksheet Title 2013 MLR NATEF Reference number; Priority Level 2013 AST NATEF Reference number; Priority Level 2013 MAST NATEF Reference number; Priority Level
Task Sheet Group Title Page A. Electrical/Electronic Systems: Vehicle, Customer, and Service Information       
C286 Research applicable vehicle and service information, vehicle service history, service precautions, and technical service bulletins. 6A1; P-1  6A1; P-1  6A1; P-1 
C951 Demonstrate knowledge of electrical/electronic series, parallel, and series-parallel circuits using principles of electricity (Ohm's Law).  6A2; P-1  6A2; P-1  6A2; P-1 
NN06 Demonstrate the use of 3 Cs (concern, cause, and correction). N/A N/A N/A
Task Sheet Group Title Page B. Electrical/Electronic Systems: Battery Diagnosis and Service       
C302 Perform battery state-of-charge test; determine necessary action. 6B1; P-1  6B1; P-1  6B1; P-1 
C818 Confirm proper battery capacity for vehicle application; perform battery capacity test; determine necessary action. 6B2; P-1  6B2; P-1  6B2; P-1 
C645 Identify electronic modules, security systems, radios, and other accessories that require reinitialization or code entry after reconnecting vehicle battery. 6B8; P-1  6B8; P-1  6B8; P-1 
C304 Maintain or restore electronic memory functions 6B3; P-1  6B3; P-1  6B3; P-1 
C644 Inspect and  clean battery; fill battery cells; check battery cables, connectors, clamps, and hold-downs. 6B4; P-1  6B4; P-1  6B4; P-1 
C819 Perform slow/fast  battery charge according to manufacturer's instructions. 6B5; P-1  6B5; P-1  6B5; P-1 
C820 Jump-start  vehicle using jumper cables and a booster battery or an auxiliary power supply. 6B6; P-1  6B6; P-1  6B6; P-1 
C954 Measure key-off battery drain (parasitic draw)  6A8; P-1     
C817 Diagnose the cause(s) of excessive key-off battery drain (parasitic draw); determine necessary action.   6A8; P-1  6A8; P-1 
NN12 Chesney Parasitic Load test N/A N/A N/A
Task Sheet Group Title Page C. Electrical/Electronic Systems: Starting System Diagnosis and Repair       
C309 Perform starter current draw tests; determine necessary action. 6C1; P-1  6C1; P-1  6C1; P-1 
C310 Perform starter circuit voltage drop tests; determine necessary action. 6C2; P-1  6C2; P-1  6C2; P-1 
C313 Inspect and test switches, connectors, and wires of starter control circuits; determine necessary action. 6C5; P-2  6C5; P-2  6C5; P-2 
C311 Inspect and test starter relays and solenoids; determine necessary action. 6C3; P-2  6C3; P-2  6C3; P-2 
C312 Remove and install starter in a vehicle. 6C4; P-1  6C4; P-1  6C4; P-1 
C314 Differentiate between electrical and engine mechanical problems that cause a slow-crank or no-crank condition.   6C6; P-2  6C6; P-2 
Task Sheet Group Title Page D. Electrical/Electronic Systems: Charging System Diagnosis and Repair       
C317 Inspect, adjust, or replace generator (alternator) drive belts;  check pulleys, and tensioners for wear; check pulley and belt alignment. 6D2; P-1  6D3; P-1  6D3; P-1 
C315 Perform charging system output test; determine necessary action. 6D1; P-1  6D1; P-1  6D1; P-1 
C319 Perform charging circuit voltage drop tests; determine necessary action. 6D4; P-1  6D5; P-1  6D5; P-1 
C318 Remove, inspect, and re-install generator (alternator). 6D3; P-2  6D4; P-1  6D4; P-1 
C316 Diagnose (troubleshoot)  charging system for the cause of undercharge, no-charge, or overcharge conditions.   6D2; P-1  6D2; P-1 
Task Sheet Group Title Page E. Electrical/Electronic Systems: Lighting System Diagnosis and Repair       
C564 Identify system voltage and safety precautions associated with high intensity discharge headlights. 6E3; P-2  6E4; P-2  6E4; P-2 
C956 Inspect interior and exterior lamps and sockets including headlights and auxiliary lights (fog lights/driving lights); replace as needed.  6E1; P-1  6E2; P-1  6E2; P-1 
C321 Aim headlights. 6E2; P-2  6E3; P-2  6E3; P-2 
C320 Diagnose (troubleshoot) the cause of brighter-than-normal, intermittent, dim, or no light operation; determine necessary action.   6E1; P-1  6E1; P-1 
Task Sheet Group Title Page F. Electrical/Electronic Systems: Fundamentals      
C289 Use wiring diagrams to trace electrical/electronic circuits . 6A3; P-1     
C952 Use wiring diagrams during the diagnosis (troubleshooting) of electrical/electronic circuit problems.   6A7; P-1  6A7; P-1 
C641 Demonstrate the proper use of a digital multimeter (DMM) when measuring source voltage, voltage drop, (including grounds), current flow and resistance. 6A4; P-1 6A3; P-1  6A3; P-1 
C291 Check operation of electrical circuits with a test light. 6A6; P-2  6A5; P-1 6A5; P-1
C295 Check operation of electrical circuits with fused jumper wires. 6A7; P-2  6A6; P-1  6A6; P-1
C298 Inspect and test fusible links, circuit breakers, and fuses; determine necessary action. 6A9; P-1  6A9; P-1  6A9; P-1 
C296 Demonstrate knowledge of the causes and effects from shorts, grounds, opens, and resistance problems in electrical/electronic circuits.  6A5; P-2 6A4; P-1  6A4; P-1 
C299 Inspect and test switches, connectors, relays, solenoid solid state devices, and wires of electrical/electronic circuits; determine necessary action.   6A10; P-1  6A10; P-1 
C642 Check electrical/electronic circuit waveforms; interpret readings and determine needed repairs.     6A14; P-2 
Task Sheet Group Title Page G. Electrical/Electronic Systems: Wire Repair       
C643 Replace electrical connectors and terminal ends. 6A11; P-1  6A11; P-1  6A11; P-1 
C301 Perform solder repair of electrical wiring. 6A10; P-1  6A13; P-1  6A13; P-1 
C955 Repair wiring harness .   6A12; P-3  6A12; P-1 
C559 Repair wiring harness (including CAN/BUS systems).      6A15; P-1 
Task Sheet Group Title Page H. Electrical/Electronic Systems: Horn and Wiper/Washer diagnosis and Repair       
C327 Diagnose (troubleshoot) causes of  incorrect horn operation; perform necessary action.   6G1; P-1  6G1; P-1 
C958 Verify windshield wiper and washer operation; replace wiper blades 6F5; P-1  6H10; P-1  6H10; P-1 
C329 Diagnose (troubleshoot) windshield washer problems; perform necessary action.   6G3; P-2  6G3; P-2
C328 Diagnose (troubleshoot) causes of incorrect wiper operation; diagnose wiper speed control and park problems; perform necessary action.   6G2; P-2 6G2; P-2
Task Sheet Group Title Page I. Electrical/Electronic Systems: Gauges/ Warning Devices, and Driver Information Systems Diagnosis and Repair        
C957 Verify operation of instrument panel gauges and warning/indicator lights; reset maintenance indicators.  6F4; P-1  6H9; P-1  6H9; P-1 
C646 Inspect and test gauges and gauge sending units for causes of abnormal gauge readings; determine necessary action.   6F1; P-2  6F1; P-2 
C325 Diagnose (troubleshoot) the cause of incorrect operation of warning devices and oter driver information systems; determine necessary action.   6F2; P-2  6F2; P-2 
Task Sheet Group Title Page J. Electrical/Electronic Systems: Accessories Diagnosis and Repair        
C330 Diagnose (troubleshoot) incorrect operation of motor-driven accessory circuits; determine necessary action.   6H1; P-2  6H1; P-2 
C648 Describe the operation of keyless entry/remote-start systems. 6F3; P-3  6H8; P-3  6H8; P-3 
C647 Diagnose (troubleshoot) incorrect electric lock operation (including remote keyless entry); determine necessary action.   6H2; P-2  6H2; P-2 
C333 Diagnose (troubleshoot)  incorrect operation of cruise control systems; determine necessary action.   6H3; P-3  6H3; P-3 
Task Sheet Group Title Page K. Electrical/Electronic Systems: Accessories Diagnosis and Repair (SRS, etc)      
C335 Disable and enable an airbag system for vehicle service; verify indicator lamp operation. 6F1; P-1  6H5; P-1  6H5; P-1 
C861 Diagnose (troubleshoot) supplemental restraint system (SRS) problems; determine necessary action.   6H4; P-2  6H4; P-2 
C337 Remove and reinstall the door panel. 6F2; P-1  6H6; P-1  6H6; P-1 
C336 Diagnose (troubleshoot) radio static and weak, intermittent, or no radio reception; determine necessary action.     6H11; P-3 
Task Sheet Group Title Page L. Electrical/Electronic Systems: Accessories Diagnosis and Repair (CAN/BUS, etc)      
C338 Diagnose (troubleshoot) body electronic system circuits using a scan tool; determine necessary action.     6H12; P-3 
C821 Check for module communication errors (including CAN/BUS systems) using a scan tool.   6H7; P-2  6H7; P-2 
C340 Diagnose the cause(s) of false, intermittent, or no operation of anti-theft systems.     6H13; P-3 
C649 Describe the process for software transfers, software updates, or flash reprogramming on electronic modules     6H14; P-3
Task Sheet Group Title Page M. Electrical/Electronic Systems: Hybrid Electrical Safety       
C561 Identify high voltage circuits of electric or hybrid electric vehicle and related safety precautions. 6B7; P-3  6B7; P-3  6B7; P-3 
C874 Identify hybrid vehicle auxiliary (12v) battery service, repair and test procedures. 6B9; P-3  6B9; P-3  6B9; P-3 

ASE 7: HVAC - (Top)

CDX Tasksheet Number NATEF 2013 Tasksheet Title 2013 MLR NATEF Reference number; Priority Level 2013 AST NATEF Reference number; Priority Level 2013 MAST NATEF Reference number; Priority Level
Task Sheet Group Title Page A. HVAC: Vehicle, Customer, and Service Information       
C342 Research applicable vehicle and service information, vehicle service history, service precautions, and technical service bulletins. 7A1; P-1  7A2; P-1  7A2; P-1 
C341 Identify and interpret heating and air conditioning problems; determine necessary action.   7A1; P-1  7A1; P-1 
C827 Identify hybrid vehicle A/C system electrical circuits and the service/safety precautions. 7B2; P-2  7B4; P-2  7B4; P-2 
NN07 Demonstrate use of the 3 Cs: concern, cause, and correction N/A N/A N/A
Task Sheet Group Title Page B. HVAC: Preliminary Testing       
C824 Performance test A/C system; identify problems.   7A3; P-1  7A3; P-1 
C825 Identify abnormal operating noises in the A/C system; determine necessary action.   7A4; P-2  7A4; P-22 
C959 Inspect A/C condenser for airflow restrictions; determine necessary action. 7B3; P-1     
C356 Inspect A/C condenser for airflow restrictions; perform necessary action.   7B7; P-1  7B7; P-1 
C830 Inspect evaporator housing water drain; perform necessary action.   7B10; P-1  7B10; P-1 
C655 Identify the source of A/C system odors. 7D2; P-2  7D7; P-2  7D7; P-2 
Task Sheet Group Title Page C. HVAC: Refrigerant Recovery, Recycling, and Handling       
C650 Identify refrigerant type; select and connect proper gauge set; record temperature and pressure readings.   7A5; P-1  7A5; P-1 
C347 Leak test A/C system; determine necessary action.   7A6; P-1  7A6; P-1 
C836 Identify and recover A/C system refrigerant.   7E2; P-1  7E2; P-1 
C657 Recycle, label, and store refrigerant.   7E3; P-1  7E3; P-1 
C652 Determine recommended oil and oil capacity for system application.   7A8; P-1  7A8; P-1 
C651 Inspect the condition of refrigerant oil removed from the A/C system; determine necessary action.   7A7; P-2  7A7; P-2 
C863 Determine the need for an additional A/C system filter; perform necessary action.   7B5; P-3  7B5; P-3 
Task Sheet Group Title Page D. HVAC: Refrigeration System Component Diagnosis and Repair       
C653 Inspect and replace A/C compressor drive belts, pulleys, and tensioners; determine necessary action. 7B1; P-1  7B1; P-1  7B1; P-1 
C654 Inspect, test, andor replace A/C compressor clutch components and/or assembly; check compressor clutch air gap; adjust as needed.   7B2; P-2  7B2; P-2 
C826 Remove, inspect, and reinstall A/C compressor and mountings; determine recommended oil quantity.   7B3; P-2  7B3; P-2 
C355 Remove and inspect A/C system mufflers, hoses, lines, fittings, O-rings, seals, and service valves; perform necessary action.   7B6; P-2  7B6; P-2 
C829 Remove, inspect, and reinstall receiver/drier or accumulator/drier; determine recommended oil quantity.   7B8; P-2  7B8; P-2 
C873 Remove, inspect, and install expansion valve or orifice (expansion) tube.   7B9; P-1  7B9; P-1 
C658 Evacuate and charge A/C system; add refrigerant oil as required.   7E4; P-1  7E4; P-1 
C656 Perform correct use and maintenance of refrigerant handling equipment according to equipment manufacturer’s standards.   7E1; P-1  7E1; P-1 
C831 Determine procedure to remove and reinstall evaporator; determine required oil quantity.   7B11; P-2  7B12; P-2
C832 Remove, inspect, and reinstall condenser; determine required oil quantity.     7B13; P-2 
Task Sheet Group Title Page E. HVAC: Heating, Ventilation, and Engine Cooling Systems Daignosis and Repair       
C362 Diagnose temperature control problems in the heater/ventilation system; determine necessary action.     7C3; P-2 
C364 Inspect engine cooling and heater system hoses; perform necessary action. 7C1; P-1  7C1; P-1  7C1; P-1 
C370 Inspect and test heater control valve(s); perform necessary action.   7C2; P-2  7C2; P-2 
C373 Inspect and test A/C-heater blower, motors, resistors, switches, relays, wiring, and protection devices; perform necessary action.   7D1; P-1  7D1; P-1 
C864 Determine procedure to remove, inspect, and reinstall heater core.   7C3; P-2  7C4; P-2 
Task Sheet Group Title Page F. HVAC Operating Systems and Related Controls Diagnosis and Repair       
C866 Check operation of automatic or semi-automatic heating, ventilation, and A/C (HVAC) control systems; determine necessary action.   7D8; P-2  7D8; P-2 
C566 Using scan tool, observe and record related HVAC data and trouble codes.   7A9; P-3  7A9; P-3 
C350 Diagnose A/C system conditions that cause the protection devices (pressure, thermal, and PCM) to interrupt system operation; determine necessary action.     7B11; P-2 
C374 Diagnose A/C compressor clutch control systems; determine necessary action.   7D2; P-2  7D2; P-2 
C835 Diagnose malfunctions in the vacuum, mechanical, and electrical components and controls of the heating, ventilation, and A/C (HVAC) system; determine necessary action.   7D3; P-2  7D3; P-2 
C376 Inspect and test A/C-heater control panel assembly; determine necessary action.   7D4; P-3  7D4; P-3 
C865 Inspect and test A/C-heater control cables, motors, and linkages; perform necessary action.   7D5; P-3  7D5; P-3 
C378 Inspect A/C-heater ducts, doors, hoses, cabin filters and outlets; perform necessary action. 7D1; P-1  7D6; P-1 7D6; P-1

ASE 8: Engine Performance - (Top)

CDX Tasksheet Number NATEF 2013 Tasksheet Title 2013 MLR NATEF Reference number; Priority Level 2013 AST NATEF Reference number; Priority Level 2013 MAST NATEF Reference number; Priority Level
Task Sheet Group Title Page A. Vehicle, Customer, and Service Information      
C387 Research applicable vehicle and service information, vehicle service history, service precautions, and technical service bulletins. 8A1; P-1  8A2; P-1  8A2; P-1 
NN08 Demonstrate use of 3 Cs (concern, cause, and correction). N/A N/A N/A
C386 Identify and interpret engine performance concerns; determine necessary action.   8A1; P-1  8A1; P-1 
Task Sheet Group Title Page B. Engine Performance: Mechanical Engine Testing       
C392 Perform engine absolute (vacuum/boost) manifold pressure tests; determine necessary action. 8A2; P-1  8A5; P-1  8A5; P-1 
C393 Perform cylinder power balance test; determine necessary action. 8A3; P-1  8A6; P-2  8A6; P-2 
C709 Perform cylinder cranking and running compression tests; determine necessary action. 8A4; P-1  8A7; P-1  8A7; P-1 
C395 Perform cylinder leakage test; determine necessary action. 8A5; P-1  8A8; P-1  8A8; P-1 
C390 Diagnose abnormal engine noises or vibration concerns; determine necessary action.   8A3; P-3  8A3; P-3 
Task Sheet Group Title Page C. Engine Performance: Camshaft Timing       
C400 Verify correct camshaft timing.   8A11; P-1  8A11; P-1 
Task Sheet Group Title Page D. Engine Performance: Engine Operating Temperature       
C398 Verify engine operating temperature; determine necessary action. 8A6; P-1  8A10; P-1  8A10; P-1 
Task Sheet Group Title Page E. Engine Performance: Ignition System       
C960 Remove and replace spark plugs; inspect secondary ignition components for wear and damage. 8A7; P-1  8C4; P-1  8C4; P-1 
C663 Inspect and test crankshaft and camshaft position sensor(s); perform necessary action.   8C2; P-1  8C2; P-1 
C664 Inspect, test, and/or replace ignition control module, powertrain/engine control module; reprogram as necessary.   8C3; P-3  8C3; P-3 
C712 Diagnose (troubleshoot) ignition system related problems such as no-starting, hard starting, engine misfire, poor driveability, spark knock, power loss, poor mileage, and emissions concerns; determine necessary action.   8C1; P-2  8C1; P-2 
C841 Access and use service information to perform step-by-step (troubleshooting) diagnosis.   8B2; P-1  8B2; P-1 
Task Sheet Group Title Page F. Engine Performance: Fuel and Induction System Testing       
C868 Inspect and test fuel pumps and pump control systems for pressure, regulation, and volume; perform necessary action.   8D2; P-1  8D3; P-1 
C420 Check fuel for contaminants; determine necessary action.   8D1; P-2  8D2; P-2 
C842 Inspect and test fuel injectors.   8D6; P-2  8D7; P-2 
C422 Replace fuel filter(s). 8C1; P-1  8D3; P-1  8D4; P-1 
C962 Inspect, service, or replace air filters, filter housings, and intake duct work. 8C2; P-1  8D4; P-1  8D5; P-1 
C424 Inspect throttle body, air induction system, intake manifold, and gaskets for vacuum leaks and/or unmetered air.   8D5; P-2  8D6; P-2 
C665 Verify idle control operation.   8D7; P-1  8D8; P-1 
C713 Diagnose (troubleshoot) hot or cold no-starting, hard starting, poor driveability, incorrect idle speed, poor idle, flooding, hesitation, surging, engine misfire, power loss, stalling, poor mileage, dieseling, and emissions problems; determine necessary action.     8D1; P-2 
Task Sheet Group Title Page G. Engine Performance: Exhaust Analysis       
C714 Inspect and test catalytic converter efficiency.   8E6; P-2  8E9; P-2 
C391 Diagnose abnormal exhaust color, odor, and sound, consumption, determine necessary action.   8A4; P-2  8A4; P-2 
Task Sheet Group Title Page H. Engine Performance: Exhaust System Testing       
C963 Inspect condition of exhaust system hangers, brackets, clamps, and heat shields; repair or replace as needed. 8C4; P-1  8D9; P-1  8D10; P-1 
C428 Inspect integrity of the exhaust manifold, exhaust pipes, muffler(s), catalytic converter(s), resonator(s), tail pipe(s), and heat shields; perform necessary action. 8C3; P-1  8D8; P-1  8D9; P-1 
C965 Check and refill diesel exhaust fluid (DEF). 8C5; P-3  8D11; P-3  8D12; P-3 
C429 Perform exhaust system back-pressure test; determine necessary action.   8D10; P-2  8D11; P-2 
C869 Test the operation of turbocharger/supercharger systems; determine necessary action.     8D13; P-3 
Task Sheet Group Title Page I. Engine Performance: Powertrain Control System Testing       
C661 Describe the importance of running all OBDII monitors for repair verification. 8B2; P-1  8B4; P-1  8B4; P-1 
C659 Retrieve and record diagnostic trouble codes, OBD monitor status, and freeze frame data; clear codes when applicable. 8B1; P-1  8B1; P-1  8B1; P-1 
C867 Perform active tests of actuators using a scan tool; determine necessary action.   8B3; P-2  8B3; P-2 
C840 Inspect and test computerized engine control system sensors, powertrain/engine control module (PCM/ECM), actuators, and circuits using a graphing multimeter (GMM)/digital storage oscilloscope (DSO); perform necessary action.     8B7; P-2 
Task Sheet Group Title Page J. Engine Performance: PCV System Testing       
C432 Inspect, test, and service positive crankcase ventilation (PCV) filter/breather cap, valve, tubes, orifices, and hoses; perform necessary action. 8D1; P-2  8E2; P-2  8E2; P-2 
C666 Diagnose oil leaks, emissions, and driveability concerns caused by the positive crankcase ventilation (PCV) system; determine necessary action.   8E1; P-3  8E1; P-3 
Task Sheet Group Title Page K. Engine Performance: EGR System Testing       
C434 Inspect, test, service, and replace components of the exhaust gas recirculation (EGR) system including tubing, exhaust passages, vacuum/pressure controls, filters, and hoses; perform necessary action.   8E4; P-2  8E7; P-2 
C435 Inspect and test electrical/electronic sensors, controls, and wiring of exhaust gas recirculation (EGR) systems; perform necessary action.     8E6; P-2 
C667 Diagnose emissions and driveability concerns caused by the exhaust gas recirculation (EGR) system; determine necessary action.   8E3; P-3  8E3; P-3 
Task Sheet Group Title Page L. Engine Performance: Evaporate emissions System Testing       
C870 Inspect and test components and hoses of the evaporative emissions control system; perform necessary action.   8E7; P-1  8E10; P-1 
C844 Diagnose emissions and driveability concerns caused by the evaporative emissions control system; determine necessary action.     8E5; P-2 
Task Sheet Group Title Page M. Engine Performance: Secondary Air Injection System Testing       
C438 Inspect and test electrical/electronically-operated components and circuits of air injection systems; perform necessary action.   8E5; P-3  8E8; P-3 
C843 Diagnose emissions and driveability concerns caused by the secondary air injection and catalytic converter systems; determine necessary action.     8E4; P-2 
Task Sheet Group Title Page N. Engine Performance: General Driveability and Emission Diagnosis       
C710 Diagnose engine mechanical, electrical, electronic, fuel, and ignition concerns; determine necessary action.   8A9; P-2  8A9; P-2 
C660 Diagnose the causes of emissions or driveability concerns with stored or active diagnostic trouble codes; obtain, graph, and interpret scan tool data.     8B5; P-1 
C711 Diagnose emissions or driveability concerns without stored diagnostic trouble codes; determine necessary action.     8B6; P-1 
C668 Interpret diagnostic trouble codes (DTCs) and scan tool data related to the emissions control systems; determine necessary action.   8E8; P-3  8E11; P-3 
C409 Diagnose driveability and emissions problems resulting from malfunctions of interrelated systems (cruise control, security alarms, suspension controls, traction controls, A/C, automatic transmissions, non-OEM-installed accessories, or similar systems); determine necessary action.     8B8; P-3