Pinpoint Test H: The Headlamps Are Inoperative With AUTOLAMPS On

WARNING: This page is about a different car, the 2007 Lincoln Mark LT and 2007 Ford Pickup. However, it is still accessible from the selected car via links, so may be relevant.

CAUTION: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.

H1 CHECK CIRCUIT 196 (DB/OG) FOR AN OPEN
- Key in OFF position.
- Disconnect: VSM C3008a
- Measure the voltage between the VSM C3008a-1, circuit 196 (DB/OG), harness side and ground.
- Is the voltage greater than 10 volts?
1. YES : Go to H2.
2. NO : VERIFY the CJB fuse 40 (20A) is OK. If OK, REPAIR the circuit. TEST the system for normal operation.
H2 CHECK CIRCUIT 15 (RD/YE) FOR AN OPEN
- Place the headlamp switch in the HEADLAMPS ON position.
- Measure the voltage between the VSM C3008a-9, circuit 15 (RD/YE), harness side and ground.
- Is the voltage greater than 10 volts?
1. YES : Go to H3.
2. NO : REPAIR the circuit. TEST the system for normal operation.
H3 CHECK FOR CORRECT VSM OPERATION
- Disconnect all the VSM connectors.
- Check for:
  - corrosion
  - damaged pins
  - pushed-out pins
- Connect all the VSM connectors and make sure they seat correctly.
- Operate the system and verify the concern is still present.
- Is the concern still present?
1. YES : INSTALL a new VSM. REFER to MULTIFUNCTION ELECTRONIC MODULES article. TEST the system for normal operation.
2. NO : The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector.