Test A: The Engine Does Not Crank

PINPOINT TEST A: THE ENGINE DOES NOT CRANK

A1-A3:

A4-A7:

A7-A9:

A10-A12:

A13-A15:

A16-A17:

A18-A19:

A20-A22:

A22-A24:

Normal Operation
Under normal operation, the battery junction box (BJB) supplies constant power to the starter relay on circuit 32 (RD/LB) through fuse F1.105 (30A). When the key is placed in the START position with the vehicle in PARK or NEUTRAL, the transmission range (TR) sensor provides power on circuit 33 (WH/PK) and the powertrain control module (PCM) provides ground on circuit 3405 (GY/RD), activating the starter motor. On police vehicles, the transmission range (TR) sensor provides power on circuit 33 (WH/PK) and ground through circuit 57 (BK), activating the starter motor.

Possible Causes
- Battery
- Starter motor
- Starter motor solenoid relay switch
- Starter motor relay
- Ignition switch
- Damaged fuse
- Anti-theft system
- Circuitry