Test A: The Engine Does Not Crank

PINPOINT TEST A: THE ENGINE DOES NOT CRANK

Normal Operation
Under normal operation, the battery junction box (BJB) supplies constant power to the starter relay on circuit 32 (RD/LB) through fuse F105 (30A). When the key is placed in the START position with the vehicle in PARK or NEUTRAL, the digital transmission range (TR) sensor provides power on circuit 33 (WH/PK) and the PCM provides ground on circuit 3405 (BK), activating the starter motor. On police vehicles, the digital transmission range (TR) sensor provides power on circuit 33 (WH/PK) and ground through circuit 57 (BK), activating the starter motor. This allows power to be supplied from the starter motor relay contacts which then flows through circuit 113 (YE/LB) to the starter solenoid. The solenoid is grounded at the starter motor. Energizing the starter solenoid will engage the starter drive into the ring gear and close the solenoid contacts, allowing power directly from the battery through circuit 2037 (RD) to the starter motor to start the engine.

This pinpoint test is intended to diagnose the following:
- Battery
- Starter motor
- Starter motor solenoid relay
- Starter motor relay
- Ignition switch
- PCM
- Fuse
- Anti-theft system
- Circuitry

A1-A3:

A4-A7:

A7-A8:

A8-A9:

A9 Continued:

A10-A11:

A11-A12:

A12 Continued:

A13-A14:

A15-A16:

A17-A19:

A19 Continued:

A20-A21:

A21-A22:

A23-A24: