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ASE 0: Foundation Studies

CDX Tasksheet Number NATEF 2013 Tasksheet Title 2013 MLR NATEF Reference number NATEF Priority Level
A. Shop and Personal Safety      
C451 Identify general shop safety rules and procedures. 0A1 P-1
C452 Utilize safe procedures for handling of tools and equipment. 0A2 P-1
C453 Identify and use proper placement of floor jacks and jack stands. 0A3 P-1
C454 Identify and use proper procedures for safe lift operation. 0A4 P-1
C455 Utilize proper ventilation procedures for working within the lab/shop area. 0A5 P-1
C456 Identify marked safety areas. 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
C459 Identify the location and use of eye wash stations. 0A8 P-1
C460 Identify the location of posted evacuation routes. 0A9 P-1
C461 Comply with the required safe use of safety glasses, ear protection, gloves, and shoes, during lab/shop activities. 0A10 P-1
C462 Identify and wear appropriate clothing for lab/shop activities. 0A11 P-1
C463 Secure hair and jewelry for lab/shop activities. 0A12 P-1
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
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
C465 Locate and demonstrate knowledge of material safety data sheets (MSDS). 0A15 P-1
B. Tools and Equipment      
C466 Identify tools and their usage in automotive applications. 0B1 P-1
C467 Identify standard and metric designation. 0B2 P-1
C468 Demonstrate safe handling and use of appropriate tools. 0B3 P-1
C469 Demonstrate proper cleaning, storage, and maintenance of tools and equipment. 0B4 P-1
C896 Demonstrate proper use of precision measuring tools (i.e. micrometer, dial-indicator, dial-caliper). 0B5 P-1
C. Preparing Vehicle for Service      
C472 Identify information needed and the service requested on a repair order. 0C1 P-1
C473 Identify purpose and demonstrate proper use of fender covers, mats. 0C2 P-1
C474 Demonstrate use of 3 C’s (concern, cause and correction). 0C3 P-1
C475 Review vehicle service history. 0C4 P-1
C590 Complete work order to include customer information, vehicle identifying information, customer concern, related service history, cause, and correction. 0C5 P-1
D. Preparing Vehicle for Customer      
C476 Ensure vehicle is prepared to return to customer per school/company policy (floor mats, steering wheel cover etc). 0D1 P-1

ASE 1: Engine Repair - (Top)

CDX Tasksheet Number NATEF 2013 Tasksheet Title 2013 MLR NATEF Reference number NATEF Priority Level
A. General (Engine Repair)      
C002 Research applicable vehicle and service information, such as internal engine operation, vehicle service history, service precautions, and technical service bulletins. 1A1 P-1
C898 Verify operation of the instrument panel engine warning indicators. 1A2 P-1
C004 Inspect engine assembly for fuel, oil, coolant, and other leaks; determine necessary action. 1A3 P-1
C541 Install engine covers using gaskets, seals, and sealers as required. 1A4 P-1
C899 Remove and replace timing belt; verify correct camshaft timing. 1A5 P-1
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
C900 Identify hybrid vehicle internal combustion engine service precautions. 1A7 P-3
B. Cylinder Head and Valve Train      
C723 Adjust valves (mechanical or hydraulic lifters). 1B1 P-1
C. Lubrication and Cooling System      
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
C734 Inspect, replace, and adjust drive belts, tensioners, and pulleys; check pulley and belt alignment. 1C2 P-1
C735 Remove, inspect, and replace thermostat and gasket/seal. 1C3 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
C737 Perform engine oil and filter change. 1C5 P-1

ASE 2: Automatic Transmission and Transaxle - (Top)

CDX Tasksheet Number NATEF 2013 Tasksheet Title 2013 MLR NATEF Reference number NATEF Priority Level
A. General (Auto Trans)      
C681 Research applicable vehicle and service information, fluid type, vehicle service history, service precautions, and technical service bulletins. 2A1 P-1
C902 Check fluid level in a transmission or a transaxle equipped with a dip-stick. 2A2 P-1
C903 Check fluid level in a transmission or a transaxle not equipped with a dip-stick. 2A3 P-1
C904 Check transmission fluid condition; check for leaks. 2A4 P-2
B. In-Vehicle Transmission/Transaxle       
C683 Inspect, adjust, and replace external manual valve shift linkage, transmission range sensor/switch, and park/neutral position switch. 2B1 P-2
C905 Inspect for leakage at external seals, gaskets, and bushings 2B2 P-2
C602 Inspect, replace and align powertrain mounts. 2B3 P-2
C907 Drain and replace fluid and filter(s). 2B4 P-1
C. Off-Vehicle Transmission and Transaxle      
C606 Describe the operational characteristics of a continuously variable transmission (CVT) 2C1 P-3
C607 Describe the operational characteristics of a hybrid vehicle drive train. 2C2 P-3

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

CDX Tasksheet Number NATEF 2013 Tasksheet Title 2013 MLR NATEF Reference number NATEF Priority Level
A. General (Manual Trans)      
C102 Research applicable vehicle and service information, fluid type, vehicle service history, service precautions, and technical service bulletins. 3A1 P-1
C105 Drain and refill manual transmission/transaxle and final drive unit. 3A2 P-1
C901 Check fluid condition; check for leaks. 3A3 P-2
B. Clutch       
C908 Check and adjust clutch master cylinder fluid level. 3B1 P-1
C909 Check for system leaks. 3B2 P-1
C. Transmission/Transaxle       
C611 Describe the operational characteristics of an electronically controlled manual transmission/transaxle. 3C1 P-3
D. Drive Shaft, Half Shafts, Universal and Constant-Velocity (CV) Joints      
C134 Inspect, remove and replace front wheel drive (FWD) bearings, hubs, and seals. 3D1 P-2
C849 Inspect, service, and replace shafts, yokes, boots, and universal/CV joints. 3D2 P-2
E. Differential Case Assembly      
C785 Clean and inspect differential housing; check for leaks; inspect housing vent. 3E1 P-2
C911 Check and adjust differential housing fluid level. 3E2 P-1
C912 Drain and refill differential housing. 3E3 P-1
F. Drive Axles      
C154 Inspect and replace drive axle wheel studs. 3E1:1 P-2
G. Four-wheel Drive/All-wheel Drive      
C913 Inspect front-wheel bearings and locking hubs 3F1 P-3
C914 Check for leaks at drive assembly seals; check vents; check lube level. 3F2 P-2

ASE 4: Suspension and Steering - (Top)

CDX Tasksheet Number NATEF 2013 Tasksheet Title 2013 MLR NATEF Reference number NATEF Priority Level
A. General (Susp/Steering)      
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
C168 Disable and enable supplemental restraint system (SRS). 4A2 P-1
B. Related Suspension and Steering Service       
C933 Inspect rack and pinion steering gear inner tie rod ends (sockets) and bellows boots. 4B1 P-1
C177 Determine proper power steering fluid type; inspect fluid level and condition. 4B2 P-1
C178 Flush, fill, and bleed power steering system. 4B3 P-2
C179 Inspect for power steering fluid leakage; determine necessary action. 4B4 P-1
C180 Remove, inspect, replace, and adjust power steering pump belt. 4B5 P-1
C183 Inspect and replace power steering hoses and fittings. 4B6 P-2
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
C920 Inspect upper and lower control arms, bushings, and shafts. 4B9 P-1
C919 Inspect and replace rebound and jounce bumpers. 4B10 P-1
C921 Inspect track bar, strut rods/radius arms, and related mounts and bushings. 4B11 P-1
C922 Inspect upper and lower ball joints (with or without wear indicators). 4B12 P-1
C923 Inspect suspension system coil springs and spring insulators (silencers). 4B13 P-1
C924 Inspect suspension system torsion bars and mounts. 4B14 P-1
C925 Inspect and replace front stabilizer bar (sway bar) bushings, brackets, and links. 4B15 P-1
C926 Inspect strut cartridge or assembly. 4B16 P-1
C927 Inspect front strut bearing and mount. 4B17 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
C202 Inspect, remove, and replace shock absorbers; inspect mounts and bushings. 4B20 P-1
C700 Inspect electric power assist steering. 4B21 P-3
C551 Identify hybrid vehicle power steering system electrical circuits and safety precautions. 4B22 P-2
C931 Describe the function of the power steering pressure switch. 4B23 P-3
C. Wheel Alignment       
C939 Perform prealignment inspection and measure vehicle ride height; determine necessary action. 4C1 P-1
D. Wheels and Tires      
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
C222 Rotate tires according to manufacturer’s recommendations. 4D2 P-1
C620 Dismount, inspect, and remount tire on wheel; Balance wheel and tire assembly (static and dynamic). 4D3 P-1
C621 Dismount, inspect, and remount tire on wheel equipped with tire pressure monitoring system sensor. 4D4 P-2
C580 Inspect tire and wheel assembly for air loss; perform necessary action. 4D5 P-1
C552 Repair tire using internal patch. 4D6 P-1
C935 Identify and test tire pressure monitoring systems (indirect and direct) for operation; verify operation of instrument panel lamps. 4D7 P-2
C936 Demonstrate knowledge of steps required to remove and replace sensors in a tire pressure monitoring system. 4D8 P-2

ASE 5: Brakes - (Top)

CDX Tasksheet Number NATEF 2013 Tasksheet Title 2013 MLR NATEF Reference number NATEF Priority Level
A. General (Brakes)      
C230 Research applicable vehicle and service information, such as brake system operation, vehicle service history, service precautions, and technical service bulletins. 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
C251 Install wheel and torque lug nuts. 5A3 P-1
B. Hydraulic System       
C622 Measure brake pedal height, travel, and free play (as applicable); determine necessary action. 5B1 P-1
C946 Check master cylinder for external leaks and proper operation. 5B2 P-1
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
C239 Select, handle, store, and fill brake fluids to proper level. 5B4 P-1
C947 Identify components of the brake warning light system 5B5 P-3
C705 Bleed and/or flush brake system. 5B6 P-1
C625 Test brake fluid for contamination. 5B7 P-1
C. Drum Brakes      
C800 Remove, clean, inspect, and measure brake drum diameter; determine necessary action. 5C1 P-1
C626 Refinish brake drum and measure final drum diameter; compare with specifications. 5C2 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
C707 Inspect wheel cylinders for leaks and proper operation; remove and replace as needed. 5C4 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
D. Disc Brakes      
C802 Remove and clean caliper assembly; inspect for leaks and damage/wear to caliper housing; determine necessary action. 5D1 P-1
C803 Clean and inspect caliper mounting and slides/pins for proper operation, wear, and damage; determine necessary action. 5D2 P-1
C627 Remove, inspect and replace pads and retaining hardware; determine necessary action. 5D3 P-1
C805 Reasasemble, lubricate, and reinstall seat pads and caliper, pads, and related hardware; inspect for leaks. 5D4  P-1
C628 Clean and inspect rotor; measure rotor thickness, thickness variation, and lateral runout; determine necessary action 5D5 P-1
C806 Remove and reinstall rotor. 5D6 P-1
C629 Refinish rotor on vehicle; measure final rotor thickness and compare with specifications. 5D7 P-1
C630 Refinish rotor off vehicle; measure final rotor thickness and compare with specifications. 5D8 P-1
C631 Retract and re-adjust caliper piston on an integral parking brake system. 5D9 P-3
C632 Check brake pad wear indicator; determine necessary action. 5D10 P-2
C948 Describe importance of operating vehicle to burnish/break-in replacement brake pads according to manufacturer's recommendations. 5D11 P-1
E. Power-Assist Units       
C807 Check brake pedal travel with, and without, engine running to verify proper power booster operation. 5E1 P-2
C808 Check vacuum supply(manifold or auxiliary pump) to vacuum-type power booster. 5E2 P-1
F. Miscellaneous (Wheel Bearings, Parking Brakes, Electrical, Etc.)        
C810 Remove, clean, inspect, repack, and install wheel bearings; replace seals; install hub and adjust bearings. 5F1 P-1
C811 Check parking brake cables and components for wear, binding, and corrosion; clean, lubricate, adjust or replace as needed. 5F2 P-2
C633 Check parking brake operation and parking brake indicator light system operation; determine necessary action. 5F3 P-1
C272 Check operation of brake stop light system; determine necessary action 5F4 P-1
C273 Replace wheel bearing and race. 5F5 P-2
C274 Inspect and replace wheel studs. 5F6 P-1
G. Electronic Brakes, and Traction and Stability Control Systems        
C857 Identify traction control/vehicle stability control system components. 5G1 P-3
C950 Describe the operation of a regenerative braking system. 5G2 P-3

ASE 6: Electrical/Electronic Systems - (Top)

CDX Tasksheet Number NATEF 2013 Tasksheet Title 2013 MLR NATEF Reference number NATEF Priority Level
A. General (Electrical)      
C286 Research applicable vehicle and service information, vehicle service history, service precautions, and technical service bulletins. 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
C289 Use wiring diagrams to trace electrical/electronic circuits . 6A3 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
C296 Demonstrate knowledge of the causes and effects from shorts, grounds, opens, and resistance problems in electrical/electronic circuits. 6A5 P-2
C291 Check operation of electrical circuits with a test light. 6A6 P-2
C295 Check operation of electrical circuits with fused jumper wires. 6A7 P-2
C954 Measure key-off battery drain (parasitic draw) 6A8 P-1
C298 Inspect and test fusible links, circuit breakers, and fuses; determine necessary action. 6A9 P-1
C301 Perform solder repair of electrical wiring. 6A10 P-1
C643 Replace electrical connectors and terminal ends. 6A11 P-1
B. Battery Service      
C302 Perform battery state-of-charge test; determine necessary action. 6B1 P-1
C818 Confirm proper battery capacity for vehicle application; perform battery capacity test; determine necessary action. 6B2 P-1
C304 Maintain or restore electronic memory functions 6B3 P-1
C644 Inspect and clean battery; fill battery cells; check battery cables, connectors, clamps, and hold-downs. 6B4 P-1
C819 Perform slow/fast battery charge according to manufacturer's instructions. 6B5 P-1
C820 Jump-start vehicle using jumper cables and a booster battery or an auxiliary power supply. 6B6 P-1
C561 Identify high voltage circuits of electric or hybrid electric vehicle and related safety precautions. 6B7 P-3
C645 Identify electronic modules, security systems, radios, and other accessories that require reinitialization or code entry after reconnecting vehicle battery. 6B8 P-1
C874 Identify hybrid vehicle auxiliary (12v) battery service, repair and test procedures. 6B9 P-3
C. Starting System       
C309 Perform starter current draw tests; determine necessary action. 6C1 P-1
C310 Perform starter circuit voltage drop tests; determine necessary action. 6C2 P-1
C311 Inspect and test starter relays and solenoids; determine necessary action. 6C3 P-2
C312 Remove and install starter in a vehicle. 6C4 P-1
C313 Inspect and test switches, connectors, and wires of starter control circuits; determine necessary action. 6C5 P-2
D. Charging System       
C315 Perform charging system output test; determine necessary action. 6D1 P-1
C317 Inspect, adjust, or replace generator (alternator) drive belts; check pulleys, and tensioners for wear; check pulley and belt alignment. 6D2 P-1
C318 Remove, inspect, and re-install generator (alternator). 6D3 P-2
C319 Perform charging circuit voltage drop tests; determine necessary action. 6D4 P-1
E. Lighting Systems       
C956 Inspect interior and exterior lamps and sockets including headlights and auxiliary lights (fog lights/driving lights); replace as needed. 6E1 P-1
C321 Aim headlights. 6E2 P-2
C564 Identify system voltage and safety precautions associated with high intensity discharge headlights. 6E3 P-2
F. Accessories      
C335 Disable and enable an airbag system for vehicle service; verify indicator lamp operation. 6F1 P-1
C337 Remove and reinstall the door panel. 6F2 P-1
C648 Describe the operation of keyless entry/remote-start systems. 6F3 P-3
C957 Verify operation of instrument panel gauges and warning/indicator lights; reset maintenance indicators. 6F4 P-1
C958 Verify windshield wiper and washer operation; replace wiper blades 6F5 P-1

ASE 7: HVAC - (Top)

CDX Tasksheet Number NATEF 2013 Tasksheet Title 2013 MLR NATEF Reference number NATEF Priority Level
A. General (HVAC)      
C342 Research applicable vehicle and service information, vehicle service history, service precautions, and technical service bulletins. 7A1 P-1
B. Refrigeration System Components       
C653 Inspect and replace A/C compressor drive belts, pulleys, and tensioners; determine necessary action. 7B1 P-1
C827 Identify hybrid vehicle A/C system electrical circuits and the service/safety precautions. 7B2 P-2
C959 Inspect A/C condenser for airflow restrictions; determine necessary action. 7B3 P-1
C. Heating, Ventilation, and Engine Cooling Systems       
C364 Inspect engine cooling and heater system hoses; perform necessary action. 7C1 P-1
D. Operating Systems and Related Controls      
C378 Inspect A/C-heater ducts, doors, hoses, cabin filters and outlets; perform necessary action. 7D1 P-1
C655 Identify the source of A/C system odors. 7D2 P-2

ASE 8: Engine Performance - (Top)

CDX Tasksheet Number NATEF 2013 Tasksheet Title 2013 MLR NATEF Reference number NATEF Priority Level
A. General (Engine Performance)      
C387 Research applicable vehicle and service information, vehicle service history, service precautions, and technical service bulletins. 8A1 P-1
C392 Perform engine absolute (vacuum/boost) manifold pressure tests; determine necessary action. 8A2 P-1
C393 Perform cylinder power balance test; determine necessary action. 8A3 P-2
C709 Perform cylinder cranking and running compression tests; determine necessary action. 8A4 P-1
C395 Perform cylinder leakage test; determine necessary action. 8A5 P-1
C398 Verify engine operating temperature; determine necessary action. 8A6 P-1
C960 Remove and replace spark plugs; inspect secondary ignition components for wear and damage. 8A7 P-1
B. Computerized Controls       
C659 Retrieve and record diagnostic trouble codes, OBD monitor status, and freeze frame data; clear codes when applicable. 8B1 P-1
C661 Describe the importance of running all OBDII monitors for repair verification. 8B2 P-1
C. Fuel, Air Induction, and Exhaust Systems       
C422 Replace fuel filter(s). 8C1 P-1
C962 Inspect, service, or replace air filters, filter housings, and intake duct work. 8C2 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
C963 Inspect condition of exhaust system hangers, brackets, clamps, and heat shields; repair or replace as needed. 8C4 P-1
C965 Check and refill diesel exhaust fluid (DEF). 8C5 P-3
D. Emissions Control Systems       
C432 Inspect, test, and service positive crankcase ventilation (PCV) filter/breather cap, valve, tubes, orifices, and hoses; perform necessary action. 8D1 P-2

Non-NATEF Tasks - (Top)

CDX Tasksheet Number NATEF 2013 Tasksheet Title 2013 MLR NATEF Reference number NATEF Priority Level
Non-NATEF Tasks      
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  
NN00 Shop Diagram N/A  
NN01 Demonstrate the use of the 3 Cs (concern, cause, and correction). N/A  
NN02 Demonstrate the use of the 3 Cs (concern, cause, and correction). N/A  
NN03 Demonstrate use of 3 Cs (concern, cause, and correction). N/A  
NN04 Demonstrate use of 3 Cs (concern, cause, correction). N/A  
NN05 Demonstrate use of 3 Cs (concern, cause, and correction). N/A  
NN06 Demonstrate the use of 3 Cs (concern, cause, and correction). N/A  
NN07 Demonstrate use of the 3 Cs: concern, cause, and correction N/A  
NN08 Demonstrate use of 3 Cs (concern, cause, and correction). N/A  
NN09 Perform cranking sound diagnosis. N/A  
NN10 Inspect and replace engine cooling and heater
system hoses.		 N/A  
NN12 Chesney Parasitic Load test N/A  
C182 Replace power steering pump filter(s). N/A