Pinpoint Test AI: The Daytime Running Lamps Are On With The Ignition Switch Off

WARNING: This page is about a different car, the 2004 Mercury Mountaineer and 2004 Ford Explorer. However, it is still accessible from the selected car via links, so may be relevant.

AI1 CHECK THE IGNITION SWITCH INPUT TO THE DRL MODULE FOR VOLTAGE
- Key in OFF position.
- Disconnect: DRL Module C1030.
- Measure the voltage between the DRL module C1030-3, circuit 932 (GY/WH), harness side and ground.
  
  Fig 1: Checking Ignition Switch Input To DRL Module For Voltage
  Courtesy of FORD MOTOR CO.
- Is any voltage indicated?
Yes

GO to AI2.

No

INSTALL a new DRL module. REFER to DAYTIME RUNNING LAMP (DRL) MODULE . TEST the system for normal operation.
AI2 CHECK THE IGNITION SWITCH
- Carry out the ignition switch component test.
  Refer to COMPONENT TESTING for schematic and connector information.
- Is the ignition switch OK?
Yes

REPAIR circuit 932 (GY/WH) for short to battery. TEST the system for normal operation.

No

INSTALL a new ignition switch. Refer to STEERING COLUMN SWITCHES . TEST the system for normal operation.