Circuit Diagnosis - Starter Inhibit Relay

Diagnostic Chart:

Wiring Diagram:

CIRCUIT DESCRIPTION

The PCM has the ability to disable starter operation if conditions inappropriate for starter operation exist. The PCM disables the starter if the engine is running, if a correct VTD password is not received from the VTD module or if the vehicle operator attempts to engage the starter for an extended period of time.

The PCM controlled starter system consists of the following components:

^ Starter enable relays.

^ The Transaxle Range / Park Neutral Position switch.

^ The ignition switch.

^ The starter solenoid.

^ The PCM.

DIAGNOSTIC AIDS

The PCM Controlled Starter Diagnosis table is intended to identify electrical malfunctions that can occur with the system. For additional system diagnosis, refer to Starting and Charging for starter motor diagnosis and service.

Check for the following conditions:

^ Poor connection at the PCM the starter enable relay, the Transaxle Range I PNP switch, the ignition switch or the starter solenoid.

Inspect harness connectors for the following conditions:

- Backed out terminals.

- Improper mating.

- Broken locks.

- Improperly formed or damaged terminals.

- Poor terminal to wire connection.

^ Damaged harness.

Inspect the wiring harness for damage.

^ Either of the following conditions can cause the PCM to disable starter operation:

- The engine has been running for longer than 10 seconds.

- The starter has been continuously engaged for longer than 15 seconds.

- A correct VTD password has not been received from the VTD module.

TEST DESCRIPTION

Number(s) below refer to step number(s) in the diagnostic table.

2. Verifies that the condition is present.

3. Checks for battery positive voltage at starter enable relay #1.

11. For wiring harness service, refer to Repair Procedures in Electrical Diagrams. For starter solenoid diagnosis and repair, refer to Starting and Charging.

24. This vehicle is equipped with a PCM which utilizes an Electrically Erasable Read Only Memory (EEPROM) When the PCM is being replaced, the new PCM must be programmed.