PINPOINT TEST Z : The Parking, Rear, Or License Plate Lamps Are On Continuously
WARNING: This page is about a different car, the 2017 Lincoln Navigator and 2017 Ford Expedition. However, it is still accessible from the selected car via links, so may be relevant.
- Z1 CHECK IF THE HEADLAMPS ARE ON
- Ignition ON.
- Observe the headlamps.
Are the headlamps illuminated?
Yes REFER to Headlamps - Expedition or Headlamps Navigator to diagnose the headlamps. No GO to Z2 - Z2 CHECK THE BCM REAR PARKING LAMP OUTPUT CIRCUIT FOR A SHORT TO VOLTAGE
- Ignition OFF.
- Disconnect: BCM C2280D .
- Ignition ON.
Do the rear parking lamps continue to illuminate?
Yes REPAIR the circuit. No GO to Z3 - Z3 CHECK THE BCM FRONT PARKING LAMP OUTPUT CIRCUIT FOR A SHORT TO VOLTAGE
- Ignition OFF.
- Disconnect: BCM C2280E .
- Ignition ON.
Do the front parking lamps continue to illuminate?
Yes REPAIR the circuit. No GO to Z4 - Z4 CHECK FOR CORRECT BCM OPERATION
- Disconnect and inspect all BCM connectors.
- Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- pushed-out pins - install new pins as necessary
- Reconnect the BCM connectors. Make sure they seat and latch correctly.
- Operate the system and determine if the concern is still present.
Is the concern still present?
Yes CHECK OASIS for any applicable TSBs. If a TSB exists for this concern, DISCONTINUE this test and FOLLOW TSB instructions. If no TSBs address this concern, BCM Hardware Testing . No The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.