B2665
DTC B2665
CIRCUIT DESCRIPTION
The headlamp switch provides a ground input into the body control module (BCM) for the park lamp switch input when the switch is activated. This input is used by the BCM to control the park lamps.
DTC DESCRIPTOR
This diagnostic procedure supports the following DTC:
DTC B2665 Park Lamp Switch Circuit High
CONDITIONS FOR RUNNING THE DTC
The headlamp switch must be in the PARK position.
CONDITIONS FOR SETTING THE DTC
The BCM detects a short to battery or open in the park lamp circuit when the headlamp switch is in the PARK position.
ACTION TAKEN WHEN THE DTC SETS
The BCM stores DTC B2665 in memory.
CONDITIONS FOR CLEARING THE DTC
- A current DTC B2665 will clear if the BCM no longer detects a short to battery or open in the park lamp switch signal circuit.
- A history DTC B2665 will clear after 100 consecutive ignition cycles if the condition for the malfunction is no longer present.
- A scan tool may be used to clear the DTC.
DIAGNOSTIC AIDS
- If the DTC B2665 is a history DTC, the fault may be intermittent.
- The following conditions may cause an intermittent malfunction to occur:
- An intermittent short to battery or open in the park lamp switch input circuit
- The headlamp switch is intermittently open internally.
- The BCM is intermittently shorted to battery or open internally.
TEST
