Pinpoint Test D: A Single Illumination Source Is Inoperative
- D1 CHECK VOLTAGE TO THE SINGLE ILLUMINATION SOURCE
- Key in OFF position.
- Disconnect: Inoperative Illumination Source.
- Measure the voltage between the inoperative illumination source, circuit 1045 (DB/WH), harness side and ground, while the headlamp switch is in the PARK position and the instrument panel dimmer switch in the fully illuminated position.
- Is the voltage greater than 10 volts?
- Yes
: GO to D2.
- No
: REPAIR the circuit. TEST the system for normal operation.
- D2 CHECK SINGLE ILLUMINATION SOURCE GROUND
- Key in OFF position.
- Measure the resistance between the inoperative illumination source, circuit 57 (BK), harness side and ground.
- Is the resistance less than 5 ohms?
- Yes
: INSTALL a new component in question. TEST the system for normal operation.
- No
: REPAIR the circuit. TEST the system for normal operation.