Test A: The Engine Does Not Crank

PINPOINT TEST A: THE ENGINE DOES NOT CRANK

A1-A3:

A4-A7:

A7-A8:

A9-A10:

A10 Continued:

A11-A12:

A12 Continued:

A13-A15:

A15-A16:

A17:

A18-A19:

A20:

A21:

A22-A23:

Normal Operation
Under normal operation, the auxiliary junction box (AJB) supplies constant power to the starter relay on circuit 30-BB13 (RD/OG) through fuse 121 (30A). When the key is placed in the START position, with the vehicle in PARK or NEUTRAL, the TR sensor provides power on circuit 50S-BB12 (GY) and the instrument cluster provides ground on circuit 31S-BB12 (BK/YE). The coil of the relay is energized and sends power to the starter motor on circuit 50-BB10 (GY/BK).

Possible Causes
- Battery
- Ignition switch
- Starter relay
- Anti-theft system
- Circuitry
- Auxiliary junction box (AJB) fuse:
- 121 (30A)

- Battery junction box (BJB) fuse:
- 22 (20A)

- Central junction box (CJB) fuse:
- 201 (5A)