Operation CHARM: Car repair manuals for everyone.

Panel Dimmer Open

Test 1 - 2:




Test 3 - 4:






SYMPTOM
PANEL DIMMER OPEN

WHEN MONITORED
The Instrument Cluster detects battery voltage input on the Headlamp Switch Output circuit.

SET CONDITION
The Instrument Cluster detects the Panel Lamp Dimmer Signal circuit resistance is greater than 9250 ohms for five seconds. During an open circuit condition, the VF display and general panel illumination will default to full intensity.

POSSIBLE CAUSES
- Intermittent condition
- Panel lamp dimmer signal circuit open
- Multi-function switch
- Multi-function switch ground circuit open
- Instrument cluster