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Symptom: HEADLAMP SW SHORT TO GROUND When Monitored and Set Condition: HEADLAMP SW SHORT TO GROUND When Monitored: Ignition in RUN and IOD fuse/connector installed. Set Condition: This DTC sets if the BCM detects voltage on the MUX circuit below 0.3 volts. POSSIBLE CAUSES HEADLAMP SWITCH MUX SHORTED LEFT MULTI-FUNTION SWITCH SHORTED BCM TEST ACTION APPLICABILITY 1 Disconnect the left multi-function switch connector. 9Headlamp switch9 5.0 volts? All No → Yes → Replace the left multi-function switch. 2 Turn the ignition off. All Yes → Repair the Headlamp Switch Mux circuit for a short to ground. No → 3 If there are no possible causes remaining, view repair. All Repair Replace the Body Control Module 239 EXTERIOR LIGHTING |