Pinpoint Test A: The Universal Transmitter is Inoperative: Testing

A1 CHECK THE HOMELINK(R) 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 .
- Does 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 705 (LG/OG) 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 C907-1, circuit 705 (LG/OG), harness side and ground.
  
  Fig 1: Measuring Voltage Between LH Vanity Mirror Lamp C907-1 Circuit 705 (LG/OG)
  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 C907-2, circuit 1205 (BK), harness side and ground.
  
  Fig 2: Measuring Resistance Between LH Vanity Mirror Lamp C907-2 Circuit 1205 (BK)
  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.