Pinpoint Test A: The Universal Transmitter Is Inoperative

A1 CHECK THE HOMELINK TRANSMITTER
- Check the illumination of the transmitter.
- Does the transmitter illuminate?
Yes

GO to A2.

No

GO to A3
A2 PROGRAM A HAND-HELD TRANSMITTER INTO A UNIVERSAL TRANSMITTER
- Program the universal transmitter. Refer to UNIVERSAL TRANSMITTER PROGRAMMING .
- Did the universal transmitter program successfully?
Yes

The universal transmitter is OK. VERIFY the receiver operates correctly.

No

INSTALL a new LH sun visor assembly. TEST the system for normal operation.
A3 CHECK CIRCUIT 53 (BK/LB) FOR VOLTAGE
- Key in OFF position.
- Disconnect: LH Vanity Mirror Lamp C907.
- Key in ON position.
- Measure the voltage between the LH vanity mirror lamp C907 pin 1, circuit 53 (BK/LB), harness side and ground.
  
  Fig 1: Checking Circuit 53 (BK/LB) For Voltage
  Courtesy of FORD MOTOR CO.
- Is the voltage greater than 10 volts?
Yes

GO to A4.

NO

REPAIR the circuit. TEST the system for normal operation.
A4 CHECK CIRCUIT 1205 (BK) FOR AN OPEN
- Key in OFF position.
- Measure the resistance between the LH vanity mirror lamp C907 pin 2, circuit 1205 (BK), harness side and ground.
  
  Fig 2: Checking Circuit 1205 (BK) For An Open
  Courtesy of FORD MOTOR CO.
- Is the resistance less than 5 ohms?
Yes

INSTALL a new LH sun visor assembly. TEST the system for normal operation.

No

REPAIR the circuit. TEST the system for normal operation.