Low Beam Relay Circuit Low

Monitored & Set Condition

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

Possible Causes:

• Intermittent Condition
• Low Beam Relay Short To Ground
• Low Beam Relay
• Body Control Module

Testing

1. Turn the ignition on. With the DRBIII(R), clear all BCM DTC's. Turn the Low Beams on. With the DRBIII(R), read the DTC information. Does the DRBIII(R) read: LOW BEAM 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 Low Beam Relay. Measure the resistance between ground and the Low Beam Relay Control circuit. Is the resistance below 5.0 ohms? If yes, repair the Low Beam 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 Low Beam Relay harness connector. Measure the voltage of the Low Beam Relay harness connector coil side feed circuit to ground. Is the voltage above 10.0 volts? If yes, replace the Low Beam Relay. Perform BODY VERIFICATION TEST  . If no, replace the Body Control Module. Perform BODY VERIFICATION TEST  .