AMT 42 Tasks

Electrical/Electronic Systems

For every task in Electrical/Electronic Systems, the following safety requirement must be strictly enforced:

Comply with personal and environmental safety practices associated with clothing; eye protection; hand tools; power equipment; proper ventilation; and the handling, storage, and disposal of chemicals/materials in accordance with local, state, and federal safety and environmental regulations.

VI. Electrical/Electronic Systems

F. Gauges, Warning Devices, and Driver Information Systems Diagnosis and Repair

1. Inspect and test gauges and gauge sending units for cause of intermittent, high, low, or no gauge readings; determine necessary action. P-1
2. Inspect and test connectors, wires, and printed circuit boards of gauge circuits; determine necessary action. P-3
3. Diagnose the cause of incorrect operation of warning devices and other driver information systems; determine necessary action. P-1
4. Inspect and test sensors, connectors, and wires of electronic (digital) instrument circuits; determine necessary action. P-3

VI. Electrical/Electronic Systems

G. Horn and Wiper/Washer Diagnosis and Repair

1. Diagnose incorrect horn operation; perform necessary action. P-2
2. Diagnose incorrect wiper operation; diagnose wiper speed control and park problems; perform necessary action. P-2
3. Diagnose incorrect washer operation; perform necessary action. P-2

VI. Electrical/Electronic Systems

H. Accessories Diagnosis and Repair

1. Diagnose incorrect operation of motor-driven accessory circuits; determine necessary action. P-2
2. Diagnose incorrect heated glass, mirror, or seat operation; determine necessary action. P-2
3. Diagnose incorrect electric lock operation; determine necessary action. P-2
4. Diagnose incorrect operation of cruise control systems; determine necessary action. P-3
5. Diagnose supplemental restraint system (SRS) concerns; determine necessary action. (Note: Follow manufacturer's safety procedures to prevent accidental deployment.) P-1
6. Disarm and enable the airbag system for vehicle service. P-1
7. Diagnose radio static and weak, intermittent, or no radio reception; determine necessary action. P-3
8. Remove and reinstall door panel. P-1
9. Diagnose body electronic system circuits using a scan tool; determine necessary action. P-2
10. Check for module communication (CAN/BUS) errors using a scan tool. P-3
11. Diagnose the cause of false, intermittent, or no operation of anti-theft system. P-2

VIII. Engine Performance

C. Ignition System Diagnosis and Repair

1. Diagnose ignition system related problems such as no-starting, hard starting, engine misfire, poor driveability, spark knock, power loss, poor mileage, and emissions concerns on vehicles with electronic ignition (distributorless) systems; determine necessary action. P-1
2. Diagnose ignition system related problems such as no-starting, hard starting, engine misfire, poor driveability, spark knock, power loss, poor mileage, and emissions concerns on vehicles with distributor ignition (DI) systems; determine necessary action. P-1
3. Inspect and test ignition primary circuit wiring and solid state components; perform necessary action. P-2
4. Inspect, test and service distributor. P-3
5. Inspect and test ignition system secondary circuit wiring and components; perform necessary action. P-2
6. Inspect and test ignition coil(s); perform necessary action. P-1
7. Check and adjust ignition system timing and timing advance/retard (where applicable). P-3
8. Inspect and test ignition system pick-up sensor or triggering devices; perform necessary action. P-1

VIII. Engine Performance

A. General Engine Diagnosis

11. Diagnose engine mechanical, electrical, electronic, fuel, and ignition concerns with an oscilloscope and/or engine diagnostic equipment; determine necessary action. P-1

VIII. Engine Performance

B. Computerized Engine Controls Diagnosis and Repair

6. Inspect and test computerized engine control system sensors, powertrain control module (PCM), actuators, and circuits using a graphing multimeter (GMM)/digital storage oscilloscope (DSO); perform necessary action. P-1
8. Access and use service information to perform step-by-step diagnosis. P-1