Symptom:
PANEL DIMMER OPEN
When Monitored and Set Condition:
PANEL DIMMER OPEN
When Monitored: When the ignition is on.
Set Condition: The Instrument Cluster monitors the panel lamps dimmer signal circuit
for a resistance value between 0.0 ohms and approximately 3,650 ohms. When the cluster
senses a value greater than 30,000 ohms for more than 5 seconds, this code will set. When
this condition occurs, the cluster illumination will default to full brightness.
POSSIBLE CAUSES
INTERMITTENT CONDITION
PANEL LAMPS DIMMER SIGNAL CIRCUIT SHORT TO VOLTAGE
PANEL LAMPS DIMMER SIGNAL CIRCUIT OPEN
MULTI- FUNCTION SWITCH
MULTI- FUNCTION SWITCH GROUND CIRCUIT OPEN
INSTRUMENT CLUSTER
TEST ACTION APPLICABILITY
1 With the DRBIIIt, erase DTC’s.
Turn the Park Lamps on.
Wait 10 (ten) seconds.
Rotate the Panel Lamps Dimmer Switch through the full range of adjustment.
With the DRBIIIt, read DTC’s.
Does the DRBIIIt display Panel Dimmer Open?
All
Yes → Go To 2
No → The condition is not present at this time. Monitor DRBIIIt
parameters while wiggling the related wire harness. Refer to any
Technical Service Bulletins (TSB) that may apply. Visually in-
spect the related wiring harness and connector terminals.
Perform BODY VERIFICATION TEST - VER 1.
2 Turn the ignition off.
Disconnect the Instrument Cluster harness connector.
Disconnect the Multi- function Switch harness connector.
Check connectors - Clean/repair as necessary.
Turn the ignition on.
Measure the voltage between the Panel Lamps Dimmer Signal circuit and ground.
Is there any voltage present?
All
Yes → Repair the Panel Lamps Dimmer Signal circuit for a short to
voltage.
Perform BODY VERIFICATION TEST - VER 1.
No → Go To 3
150
INSTRUMENT CLUSTER
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