B2587

DTC B2587

CIRCUIT DESCRIPTION
The body control module (BCM) controls the park lamp relay. The BCM grounds the park lamp relay coil control circuit which energizes the park lamp relay.

CONDITIONS FOR RUNNING THE DTC
The BCM must not be commanding the park lamp relay to energize.

CONDITIONS FOR SETTING THE DTC
- The BCM detects a short to ground or open in the park lamp relay coil control circuit when the BCM is not trying to energize the park lamp relay.
- The condition above must be present for more than 0.3 seconds.

ACTION TAKEN WHEN THE DTC SETS
The BCM stores DTC B2587 in memory.

CONDITIONS FOR CLEARING THE DTC
- A current DTC B2587 will clear if the BCM no longer detects a short to ground or open in the park lamp relay coil control circuit.
- A history DTC B2587 will clear after 100 consecutive ignition cycles if the condition for the malfunction is no longer present.

DIAGNOSTIC AIDS
- If the DTC B2587 is a history DTC, the fault may be intermittent.
- The following conditions may cause an intermittent malfunction to occur:
- An intermittent short to ground or open in the coil control circuit of the park lamp relay.
- The park lamp relay coil is intermittently shorted to ground or open internally.
- The BCM is intermittently shorted to ground or open internally.

TEST

Steps 1 - 7:

Steps 8 - 13: