B3802

DTC B3802

Circuit Description
The body control module (BCM) monitors the park lamp switch signal circuit and the headlamp switch headlamps on signal circuit in order to determine when the park lamps and headlamps should be illuminated. When the headlamp switch is turned to PARK, the BCM senses that the park lamp switch signal circuit is grounded and the headlamps switch headlamps on signal circuit is open. The BCM will then energize the park lamp relay illuminating the parklamps. When the headlamp switch is turned to HEAD, the BCM senses that the park lamp switch signal circuit and the headlamp switch headlamps on signal circuit are grounded. The BCM will then energize the park lamp relay and headlamp driver module (HDM) illuminating the park lamps and headlamps.

Conditions for Running the DTC
The battery voltage must be between 9.0-16.0 volts.

Conditions for Setting the DTC
When the BCM receives the headlamps ON signal request without a park lamp ON signal request from the headlamp switch.

Action Taken When the DTC Sets
The park lamps will not operate or the headlamps will illuminate without the park lamps.

Conditions for Clearing the MIL/DTC
- This DTC will clear on current status after the condition for setting the fault is corrected.
- A history DTC will clear after 100 consecutive ignition cycles without a fault present.
- History and current DTC(s) can be cleared using a scan tool.

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Step 8 - 10: