B3867
DTC B3867
DIAGNOSTIC INSTRUCTIONS
- Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
- Strategy Based Diagnosis
- Diagnostic Procedure Instructions Initial Inspection and Diagnostic Overview
DTC DESCRIPTOR
DTC B3867 00
Right Park Lamp Control Circuit
DIAGNOSTIC FAULT INFORMATION
CIRCUIT/SYSTEM DESCRIPTION
Voltage is applied at all times to the Park Lamp Relay from battery voltage. When the headlamp switch is placed in the PARK position, ground is applied through the park lamp switch signal circuit to the body control module (BCM). The BCM then applies a ground to the park lamp relay control circuit. This engages the relay and applies voltage through the park lamp fuses and to all the park lamps.
CONDITIONS FOR RUNNING THE DTC
The ignition is ON. Park lamps must be ON and the park lamps must be commanded ON.
CONDITIONS FOR SETTING THE DTC
The BCM detects a short to voltage on the right park lamp control circuit while trying to apply a ground to the circuit.
ACTION TAKEN WHEN THE DTC SETS
The right park lamp does not illuminate.
CONDITIONS FOR CLEARING THE DTC
The BCM clears this code from current when the fault is removed from the system.
CIRCUIT/SYSTEM VERIFICATION
Ignition ON, turn the park lamps ON. The park lamps should illuminate.
CIRCUIT/SYSTEM TESTING
1. Clear the DTC, ignition OFF, park lamp switch OFF, disconnect the park lamp relay underhood fuseblock terminal C2 pin 8 and underhood fuseblock terminal C3 pin 16.
2. Verify a test lamp illuminates between the negative battery terminal and the right park lamp relay control circuit check the underhood fuseblock terminal C2 pin 8.
- If the test lamp does not illuminate replace the underhood fuseblock.
3. Test for a short to voltage in the park lamp relay control circuit.
- If all circuits/connections test normal, replace the BCM.
REPAIR INSTRUCTIONS
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
- Underhood Electrical Center or Junction Block Replacement
- Control Module References for BCM replacement, setup, and programming Verification Tests Programming and Relearning