B1310

Diagnostic Routine O

Diagnostic Overview

B1310:12

Refer to Wiring Diagram Set 13 for schematic and connector information Electrical Diagrams.

Normal Operation and Fault Conditions

When the ignition is placed in RUN mode, the BCM (Body Control Module) module provides a ground for the coil (control) side of the RUN/START relay located in the BJB (Battery Junction Box). The BCM (Body Control Module) monitors the run/start relay control circuit and sets a DTC (Diagnostic Trouble Code) if the circuit is shorted to voltage.

DTC Fault Trigger Conditions






Pinpoint Test

1. CHECK THE RUN/START RELAY

1. Ignition OFF.

2. Disconnect: RUN/START Relay.

3. Carry out the appropriate relay component test.

Is the relay OK?








2. CHECK THE RUN/START RELAY CONTROL CIRCUIT FOR A SHORT TO VOLTAGE

1. Measure:





Is any voltage present?








3. CHECK FOR CORRECT BCM (Body Control Module) OPERATION

1. Disconnect and inspect all BCM (Body Control Module) connectors.

2. Repair:

- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

3. Reconnect the BCM (Body Control Module) connectors and all previously disconnected exterior system connectors. Make sure they seat and latch correctly.

4. Operate the system and determine if the concern is still present.

Is the concern still present?