Could have a wiring problem , a wiring pin backed out of a connector ! If you don't know about automotive electrical an wiring diagrams an electrical wiring trouble shooting I suggest you take it to a ASE certified repair shop .
Instrument Cluster and Panel Illumination
The instrument cluster and panel illumination is used to provide backlighting to the instrument panel, switches, and control components when the headlamp switch is in either the PARKING LAMPS ON or HEADLAMPS ON position. The level of intensity is adjustable by pushing the instrument panel dimmer switch either up to increase intensity or down to decrease intensity.
The dimmable backlighting components are:
- Instrument cluster
- Hazard switch
- Rear defroster switch
- Message center switches
- Parking aid switch (if equipped)
- Transmission range selector
- Fog lamp switch
The non-dimmable backlighting components are:
Principles of Operation
- Driver front door lock and power window control switch
- Passenger front door lock and power window control switch
- Driver rear door power window control switch
- Passenger rear door power window control switch
The instrument cluster sends a signal to the instrument panel dimmer switch. The instrument cluster provides a variable pulse width modulated (PWM) signal to the dimmable backlighting components in accordance with the position of the instrument panel dimmer switch.
- Verify the customer concern.
- Visually inspect the following for obvious signs of mechanical or electrical damage.
Visual Inspection Chart
- Instrument panel dimmer switch
- Smart junction box (SJB) fuse(s):
- Illumination bulbs
- Instrument cluster
- If an obvious cause for an observed or reported concern is found, correct the cause (if possible) before proceeding to the next step.
NOTE: Make sure to use the latest scan tool release software.
If the cause is not visually evident, connect the scan tool to the data link connector (DLC).
NOTE: The vehicle communication module (VCM) LED prove-out confirms power and ground from the DLC are provided to the VCM.
If the scan tool does not communicate with the VCM:
- Check the VCM connection to the vehicle.
- Check the scan tool connection to the VCM.
- Refer to Section 418-00 , No Power To The Scan Tool, to diagnose no communication with the scan tool.
- If the scan tool does not communicate with the vehicle:
- Verify the ignition key is in the ON position.
- Verify the scan tool operation with a known good vehicle.
- Refer to Section 418-00 to diagnose no response from the powertrain control module (PCM).
- Carry out the network test.
- If the scan tool responds with no communication for one or more modules, refer to Section 418-00 .
- If the network test passes, retrieve and record the continuous memory DTCs.
- Clear the continuous DTCs and carry out the self-test diagnostics for the instrument cluster.
- If the DTCs retrieved are related to the concern, go to the Instrument Cluster Diagnostic Trouble Code (DTC) Index. For all other DTCs, refer to Section 419-10 .
- If no DTCs related to the concern are retrieved, GO to Symptom Chart .
- One or more module-controlled illumination source(s) is inoperative
A2 CHECK VOLTAGE TO THE INOPERATIVE ILLUMINATION SOURCE
- Inoperative illumination source component
- Key in OFF position.
- Disconnect: Inoperative Illumination Source Connector.
- Key in ON position.
- Place the headlamp switch in the PARKING LAMPS ON position.
- Measure the voltage between the inoperative illumination source, harness side and ground according to the following table:
Rear window defrost switch
Hazard flasher switch
Parking aid disable switch
Message center INFO switch
Message center SET switch
Transmission range selector
Fog lamp switch
- Is the voltage greater than 10 volts?