Front Fog Relay Circuit Low

Monitored & Set Condition

1. When Monitored: With the ignition On.
2. Set Condition: BCM detects a low (ground) on the Front Fog Relay even though it is not attempting to turn on the Front Fog Lamps for more than 5 seconds.

Possible Causes:

• Intermittent Condition
• Front Fog Relay Short To Ground
• Front Fog Relay
• Body Control Module

Testing

1. Turn the ignition on. With the DRBIII(R), clear all BCM DTC's. Turn the Fog Lamps on. With the DRBIII(R), read the DTC information. Does the DRBIII(R) read: FRONT FOG RELAY CKT LOW? If yes, go to next step. If no, the condition that caused the symptom is currently not present. Inspect the related wiring for a possible intermittent condition. Look for any chafed, pierced, pinched, or partially broken wires. Perform BODY VERIFICATION TEST  .
2. Turn the ignition off. Disconnect the Front Fog Relay. Measure the resistance between ground and the Front Fog Relay Control circuit. Is the resistance below 5.0 ohms? If yes, repair the Front Fog Relay Control circuit for a short to ground. Perform BODY VERIFICATION TEST  . If no, go to next step.
3. Turn the ignition off. Disconnect the Front Fog Relay harness connector. Measure the voltage of the Front Fog Relay harness connector coil side feed circuit to ground. Is the voltage above 10.0 volts? If yes, replace the Fog Lamp Relay. Perform BODY VERIFICATION TEST  . If no, replace the Body Control Module. Perform BODY VERIFICATION TEST  .