Without Scan Tool
Entering the Self-diagnostic Function1. Press and hold the driver's "AUTO" button and "DUAL" button.
2. Turn the ignition switch ACC (I), then release the buttons.
HVAC Button Check
Press any climate control button and the corresponding segment or LED will turn on to ensure LCD driver functionally and as button confirmation.
Back Light, LCD, Switch Light Check
Turn the combination light switch ON.
- Turn on the LCD back light.
- Turn on all LCD segments.
- Brings screen to full bright (with navigation).
- A beep sound is heard when pressing any climate control button (with navigation).
If the display panel control unit fails to complete any of the functions of the self-diagnostic function, go to the display panel control unit input test. Component Tests and General Diagnostics
Communication Circuit Test
1. Remove the upper panel.
2. Disconnect the display panel control unit connector B (6P) and connect the special tool (07AAZ-SEPA100) to display panel control unit.
3. Push and hold the driver's "AUTO" button for 5 seconds.
4. The driver's temperature and passenger's temperature indicators will display a code. Check the code in the list above. If the code is considered OK, then the center panel module's communication circuit is OK.
If the code is considered a fault, replace the center panel module.
If the display module control unit fails to complete any of the functions of the self-diagnostic function, go to the display module control unit input test. Component Tests and General Diagnostics