Pinpoint Test H: The Headlamps 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.
- H1 CHECK THE HEADLAMP OPERATION
- Key in OFF position.
- Place the headlamp switch in the headlamps ON position.
- Are the headlamps illuminated?
- Yes : TURN the headlamp switch OFF. GO to H2.
- No : REFER to HEADLAMPS to continue diagnosis of the headlamps.
- H2 CHECK CIRCUIT 196 (DB/OG) FOR AN OPEN
- Key in OFF position.
- Disconnect: Vehicle Security Module C3203e.
- Measure the voltage between the vehicle security module C3203e-14, circuit 196 (DB/OG), harness side and ground.
- Is the voltage greater than 10 volts?
- Yes : GO to H3.
- No : REPAIR the circuit. TEST the system for normal operation.
- H3 CHECK CIRCUIT 221 (OG/WH) FOR AN OPEN
- Turn the headlamp switch to the headlamps ON position.
- Measure the voltage between the vehicle security module C3203e-7, circuit 221 (OG/WH), harness side and ground.
- Is the voltage greater than 10 volts?
- Yes : GO to H4.
- No : REPAIR the circuit. TEST the system for normal operation.
- H4 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 MULTIFUNCTION ELECTRONIC MODULES . 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.