Display function
PROBLEM SYMPTOMS TABLE - DISPLAY FUNCTION
| Symptom |
Verification |
| Black screen (No image appears on navigation/audio screen). |
- "BLACK SCREEN (NO IMAGE APPEARS ON NAVIGATION AND AUDIO SCREEN)"
- Illumination circuit
- Power source circuit (multi-display)
- Replace multi-display
|
| Illumination for navigation controller assy does not come on with TAIL switch on. |
- Illumination circuit
- Replace navigation controller assy
|
| Display does not dim (Night Screen) with TAIL switch on. |
- "DISPLAY DOES NOT DIM (NIGHT SCREEN) WITH TAIL SWITCH ON"
- Illumination circuit
- Replace multi-display
|
| Power does not turn off (Screen remains on). |
- Power source circuit (multi-display)
- Power source circuit (navigation controller assy)
- Switch signal circuit (from navigation controller assy)
- Replace multi-display
- Replace navigation controller assy
|
| Navigation controller assy does not function. |
- "PANEL SWITCH DOES NOT FUNCTION"
- Power source circuit (multi-display)
- Power source circuit (navigation controller assy)
- Switch signal circuit (from navigation controller assy)
- Steering pad switch circuit
- Replace navigation controller assy
- Replace multi-display
|
| Only navigation screen is not displayed. |
- Display signal circuit (navigation ECU - multi-display)
- Replace map disc
- Replace multi-display
- Replace navigation ECU
|
| Screen flicker or color distortion |
- "SCREEN FLICKER OR COLOR DISTORTION"
- Display signal circuit (navigation ECU - multi-display)
- Replace map disc
- Replace multi-display
- Replace navigation ECU
|
| Navigation function switches can be operated while vehicle is running. |
- Speed signal circuit (multi-display - combination meter assy)
|