Pinpoint Test E: One High Beam Headlamp Is Inoperative

E1 CHECK THE VOLTAGE AT BJB FUSE 26 OR 27
- Key in ON position.
- Place the headlamp switch in the headlamps ON position.
- Place the multifunction switch in the high beam position.
- Measure the voltage between the BJB fuse 26 (10A) (LH headlamp) input side and ground; or between the BJB fuse 27(10A) (RH headlamp) input side and ground.
  
  Fig 1: Checking Voltage At BJB Fuse 26 Or 27
  Courtesy of FORD MOTOR CO.
- Is the voltage greater than 10 volts?
- Yes : GO to E2.
- No : REPAIR or INSTALL a new BJB. TEST the system for normal operation.
E2 CHECK THE VOLTAGE AT THE HEADLAMP
- Key in OFF position.
- Disconnect: Inoperative Headlamp.
- Key in ON position.
- Measure the voltage between the LH headlamp C1021-6, circuit 15S-LE15 (GN/BK), harness side and ground; or between the RH headlamp C1041-6, circuit 15S-LE22 (GN/OG), harness side and ground.
  
  Fig 2: Checking Voltage At Headlamp
  Courtesy of FORD MOTOR CO.
- Is the voltage greater than 10 volts?
- Yes : REPAIR or INSTALL a new headlamp assembly. REFER to HEADLAMP ASSEMBLY . TEST the system for normal operation.
- No : REPAIR the circuit in question. TEST the system for normal operation.