Test A: The Engine Does Not Crank And The Relay Does Not Click
PINPOINT TEST A: THE ENGINE DOES NOT CRANK AND THE RELAY DOES NOT CLICKA1-A3:
A3-A4:
A4-A5:
A6-A9:
A9-A11:
A11-A12:
A12-A13:
A13 Continued:
Normal Operation
In normal operation, voltage from the bussed electrical center (BEC) is supplied to the ignition switch through circuit 1050 (LG/PK). When the ignition switch is placed in the START position, voltage is supplied through circuit 1522 (DG) to the smart junction box (SJB).
For automatic transmission equipped vehicles, voltage is supplied from the SJB to the digital transmission range (TR) sensor through circuit 32 (RD/LB). In PARK or NEUTRAL, voltage is supplied from the TR sensor through circuit 33 (WH/PK) to the starter relay coil located in the BEC. The starter relay coil is supplied ground from the PCM through circuit 1419 (LG/YE).
For manual transmission equipped vehicles, voltage from the SJB is supplied to the clutch pedal position switch (CPP) through circuit 32 (RD/LB). When the clutch pedal is depressed, voltage is supplied from the CPP to the starter relay coil located in the BEC through circuit 32 (RD/LB). The starter relay coil is supplied ground from the PCM through circuit 1419 (LG/YE).
When the starter relay is energized, voltage supplied to the relay switch is sent to the starter motor solenoid through circuit 113 (YE/LB). Battery voltage is supplied to the starter motor through circuit 2037 (RD) at all times.
Possible Causes
- Fuse(s)
- An open in battery voltage feed BEC, 2037 (RD) or 113 (YE/LB)
- Starter motor relay
- Starter