D - Climate Conrol Illumination Inoperative

Pinpoint Test D - Climate Control Illumination Inoperative

D1 - Check Climate Control Illumination Circuit 19 (LB/R)

- Remove A/C heater control.
- Disconnect control illumination buib connector.
- Turn headlamp switch to parking lamp position.
- Actuate panel dimmer switch to maximum without turning on dome lamps.
- Measure voltage between pin 8, circuit 19 (LB/R) and ground.

Is B+ present?

YES GO to D2.
NO SERVICE open in circuit 19 (LB/R). RESTORE system. RETEST system.

D2 - Check Ground Circuit 57 (BK)

- Measure resistance between pin 24, circuit 57 BK and ground

Is resistance less than 5 ohms?

YES REPLACE illumination bulb. RESTORE system. RETEST system.
NO SERVICE open in circuit 57 (BK). RESTORE system. RETEST system.