Operation CHARM: Car repair manuals for everyone.

Test A: The Engine Does Not Crank

PINPOINT TEST A: THE ENGINE DOES NOT CRANK


A1-A3:






A4-A7:






A7-A8:






A9:






A10-A11:






A11-A12:






A12-A14:






A14-A16:






A16-A17:






Normal Operation
Under normal operation, constant power is supplied to the starter relay on circuit 1050 (LG/VT). When the key is placed in the START position, with the vehicle in PARK or NEUTRAL, the digital transmission range (TR) sensor provides power to the starter relay coil on circuit 33 (WH/PK) and the PCM provides ground to the starter relay coil on circuit 1419 (LG/YE). When the coil of the relay is energized, it sends power to the starter motor on circuit 113 (YE/LB).

Possible Causes
- Battery
- Ignition switch
- Starter relay
- Anti-theft system
- Circuitry
- Bussed electrical center (BEC) fuses:
- 4 (30A)
- 64 (20A)

- Smart junction box (SJB) fuse:
- 21 (10A)