Cluster and Panel Illumination Problems

Test 1:

Test 2 - 6:

Test 7 - 11:

Test 12 - 17:

Test 18 - 21:

SYMPTOM
CLUSTER AND PANEL ILLUMINATION PROBLEMS

POSSIBLE CAUSES
- Instrument cluster
- Disconnect the ASH receiver lamp harness connector
- Disconnect the ASH receiver lamp harness connector
- Disconnect the ATC module or the MTC module harness connectors
- Disconnect the ATC module or the MTC module harness connectors
- Disconnect the clock harness connector (if equipped)
- Disconnect the clock harness connector (if equipped)
- Disconnect the headlamp switch harness connector
- Disconnect the PRND3L illumination harness connector
- Disconnect the PRND3L illumination harness connector
- Disconnect the radio harness connector
- Disconnect the radio harness connector
- Disconnect the traction control switch (if equipped)
- Disconnect the traction control switch (if equipped)
- Headlamp switch shorted to voltage
- Panel lamp driver circuit shorted to ground
- Panel lamp driver circuit shorted to voltage
- Observe the dimming level voltage
- Attempt to communicate with the instrument cluster
- Check for DTCS in the instrument cluster
- Check the panel lamp driver circuit for a short to ground