Pinpoint Test I: The Parking Lamps Are Inoperative With AUTOLAMPS On
WARNING: This page is about a different car, the 2005 Mercury Mountaineer and 2005 Ford Explorer. However, it is still accessible from the selected car via links, so may be relevant.
- I1 CHECK THE PARKING LAMP OPERATION
- Key in OFF position.
- Place the headlamp switch in the parking lamps ON position.
- Are the parking lamps illuminated?
- Yes : TURN the headlamp switch OFF. GO to I2.
- No : REFER to PARKING, REAR AND LICENSE LAMPS to continue diagnosis of the parking lamps.
- I2 CHECK CIRCUIT 14 (BN) FOR AN OPEN
- Disconnect: Vehicle Security Module C3203e.
- Place the headlamp switch in the parking lamps ON position.
- Measure the voltage between the vehicle security module C3203e-2, circuit 14 (BN), harness side and ground.
- Is the voltage greater than 10 volts?
- Yes : TURN the headlamp switch OFF. GO to I3.
- No : REPAIR the circuit. TEST the system for normal operation.
- I3 CHECK CIRCUIT 195 (TN/WH) FOR POWER
- Measure the voltage between the vehicle security module C3203e-8, circuit 195 (TN/WH), harness side and ground.
- Is the voltage greater than 10 volts?
- Yes : GO to I4.
- No : REPAIR the circuit. TEST the system for normal operation.
- I4 CHECK FOR VEHICLE SECURITY MODULE OPERATION
- Disconnect all the vehicle security module connectors.
- Check for:
- corrosion
- pushed-out pins
- Connect all the vehicle security module connectors and make sure they seat correctly.
- Operate the system and verify the concern is still present.
- Is the concern still present?
- Yes : INSTALL a new vehicle security module. REFER to VEHICLE SECURITY MODULE . TEST the system for normal operation.
- No : The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. CLEAR the DTCs. TEST the system for normal operation.