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Symptom: REAR FOG LAMP RELAY CKT OPEN When Monitored and Set Condition: REAR FOG LAMP RELAY CKT OPEN When Monitored: Ignition switch in the On position and the IOD fuse installed. Set Condition: This DTC sets if the BCM does not detect any voltage on the control circuit. POSSIBLE CAUSES JUNCTION BLOCK - REAR FOG LAMP RELAY CONTROL CKT SHORTED TO GROUND REAR FOG LAMP RELAY OPEN JUNCTION BLOCK - REAR FOG LAMP RELAY CONTROL CKT OPEN BODY CONTROL MODULE INSPECT FUSE #27 JUNCTION BLOCK - FUSED B+ CKT SHORTED TO GROUND REAR FOG LAMP RELAY SHORTED REAR FOG LAMP RELAY OUTPUT CIRCUIT SHORTED TO GROUND TEST ACTION APPLICABILITY 1 Remove the Rear Fog Lamp Relay from the Junction Block. All Yes → No → 2 Remove the Rear Fog Lamp Relay from the Junction Block. All Yes → Replace the Rear Fog Lamp Relay. No → 247 EXTERIOR LIGHTING |