Step
| Action
| Normal Result(s)
| Abnormal Result(s)*
|
1
|
- Install the scan tool.
- Turn the ignition switch to the ON position.
- Select BCM DTC with the scan tool.
- Inspect for any stored DTCs that may affect the serial data line
communication.
- Turn the ignition switch to the OFF position.
- Remove the scan tool.
| No DTCs
are stored in memory.
| Go to applicable DTC table
|
2
|
- Turn the ignition switch to the ON position.
- Turn the IP dimmer switch to the HIGH position.
- Turn the headlamp switch to the PARK position.
| The following
components illuminate inside the passenger compartment:
• | The radio/steering wheel controls (utility) |
• | The instrument cluster lamp |
• | The rear wiper/washer and endgate/liftgate release switch (utility) |
• | The HVAC control head faceplate lamp |
• | The rear window defogger switch (utility) |
• | The transfer case select switch |
|
|
3
|
- Turn the IP dimmer switch slowly to the LOW position.
- Return the IP dimmer switch to the HIGH position.
|
• | The brightness of the illuminated lamps slowly decreases. |
• | The brightness of the illuminated lamps slowly increases. |
|
Instrument Panel Lamps Inoperative
|
* Refer to the appropriate symptom diagnostic
table for the applicable abnormal result.
|