Problem Symptoms Table
HINT:
- Before inspecting the suspected areas listed in the table below, check the fuse and relay.
- Before inspecting the suspected areas listed in the table below, check the DTCs.
- Methods used to verify the cause of the problem are listed in order of probability in the suspected area column.
Display function
PROBLEM SYMPTOMS TABLE (DISPLAY FUNCTION)
| Symptom | Suspected area | Proceed to | ||||
|---|---|---|---|---|---|---|
| Black screen (No image appears on navigation/audio screen). | 1. "Black Screen (No Image Appears on Navigation and Audio Screen)" | No Image Appears on Multi-display | ||||
| 2. Dimmer signal circuit | DIMMER SIGNAL CIRCUIT | |||||
| 3. Multi-display power source circuit | MULTI-DISPLAY POWER SOURCE CIRCUIT | |||||
| 4. AVC-LAN Circuit | AVC-LAN CIRCUIT | |||||
| 5. Replace multi-display | REPLACE MULTI-DISPLAY | |||||
| Illumination for panel switch does not come on with TAIL switch on. | 1. Illumination for panel switch does not come on with tail switch on | ILLUMINATION FOR PANEL SWITCH DOES NOT COME ON WITH TAIL SWITCH ON | ||||
| 2. Illumination circuit | ILLUMINATION CIRCUIT | |||||
| 3. Replace multi-display | REPLACE MULTI-DISPLAY |
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| Display does not dim (Night Screen) with TAIL switch on. | 1. Display does not dim (night screen) with tail switch on | DISPLAY DOES NOT DIM (NIGHT SCREEN) WITH TAIL SWITCH ON | ||||
| 2. Dimmer signal circuit | DIMMER SIGNAL CIRCUIT | |||||
| 3. Replace multi-display | REPLACE MULTI-DISPLAY | |||||
| Power does not turn off (The screen remains on). | 1. Multi-display power source circuit | MULTI-DISPLAY POWER SOURCE CIRCUIT | ||||
| 2. Replace multi-display | REPLACE MULTI-DISPLAY | |||||
| Panel switches do not function. | 1. Panel switches do not function | PANEL SWITCHES DO NOT FUNCTION | ||||
| 2. Steering pad switch circuit (audio function) | STEERING PAD SWITCH CIRCUIT (AUDIO FUNCTION) | |||||
| 3. Steering pad switch circuit (navigation function) | STEERING PAD SWITCH CIRCUIT (NAVIGATION FUNCTION) | |||||
| 4. Multi-display power source circuit | MULTI-DISPLAY POWER SOURCE CIRCUIT | |||||
| 5. Replace multi-display | REPLACE MULTI-DISPLAY | |||||
| Touch panel switch does not function. | 1. Touch panel switch does not function | TOUCH PANEL SWITCH DOES NOT FUNCTION | ||||
| 2. Steering pad switch circuit (audio function) | STEERING PAD SWITCH CIRCUIT (AUDIO FUNCTION) | |||||
| 3. Steering pad switch circuit (navigation function) | STEERING PAD SWITCH CIRCUIT | |||||
| 4. Multi-display power source circuit | MULTI-DISPLAY POWER SOURCE CIRCUIT |
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| 5. Replace multi-display | REPLACE MULTI-DISPLAY | |||||
| Navigation screen is not displayed. | 1. Display signal circuit between navigation ECU and multi-display controller ((1)) | DISPLAY SIGNAL CIRCUIT BETWEEN NAVIGATION ECU AND MULTI-DISPLAY CONTROLLER | ||||
| 2. Display signal circuit between navigation ecu and television camera ECU ((2)) | DISPLAY SIGNAL CIRCUIT BETWEEN NAVIGATION ECU AND TELEVISION CAMERA ECU | |||||
| 3. Display signal circuit between multi-display controller and television camera ECU ((1)) | DISPLAY SIGNAL CIRCUIT BETWEEN MULTI-DISPLAY CONTROLLER AND TELEVISION CAMERA ECU | |||||
| 4. Display signal circuit between television camera ECU and multi-display | DISPLAY SIGNAL CIRCUIT BETWEEN TELEVISION CAMERA ECU AND MULTI-DISPLAY | |||||
| 5. Replace multi-display | REPLACE MULTI-DISPLAY | |||||
| Screen flicker or color distortion. | 1. Screen flicker or color distortion | SCREEN FLICKER OR COLOR DISTORTION | ||||
| 2. Display signal circuit between navigation ECU and multi-display controller ((1)) | DISPLAY SIGNAL CIRCUIT BETWEEN NAVIGATION ECU AND MULTI-DISPLAY CONTROLLER | |||||
| 3. Display signal circuit between navigation ecu and television camera ECU ((2)) | DISPLAY SIGNAL CIRCUIT BETWEEN NAVIGATION ECU AND TELEVISION CAMERA ECU | |||||
| 4. Display signal circuit between multi-display controller and television camera ECU ((1)) | DISPLAY SIGNAL CIRCUIT BETWEEN MULTI-DISPLAY CONTROLLER AND TELEVISION CAMERA ECU | |||||
| 5. Display signal circuit between television camera ECU and multi-display | DISPLAY SIGNAL CIRCUIT BETWEEN TELEVISION CAMERA ECU AND MULTI-DISPLAY | |||||
| 6. Replace navigation ECU | NAVIGATION ECU | |||||
| 7. Replace multi-display | REPLACE MULTI-DISPLAY | |||||
| Navigation function switches can be operated while vehicle is running. | 1. Vehicle speed signal circuit between multi-display and combination meter | VEHICLE SPEED SIGNAL CIRCUIT BETWEEN MULTI-DISPLAY AND COMBINATION METER | ||||
| DVD image cannot be displayed on front screen. (Parking brake is on.) | 1. Display signal circuit between multi-display and multi-display controller | DISPLAY SIGNAL CIRCUIT BETWEEN MULTI-DISPLAY AND MULTI-DISPLAY CONTROLLER | ||||
| 2. Parking brake switch circuit | PARKING BRAKE SWITCH CIRCUIT | |||||
| 3. Replace multi-display | REPLACE MULTI-DISPLAY | |||||
|
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Navigation function
PROBLEM SYMPTOMS TABLE (NAVIGATION FUNCTION)
| Symptom | Suspected area | Proceed to |
|---|---|---|
| Map disc cannot be inserted. | 1. Map disc cannot be inserted | MAP DISC CANNOT BE INSERTED |
| 2. Navigation ecu power source circuit | NAVIGATION ECU POWER SOURCE CIRCUIT | |
| 3. Replace navigation ECU | NAVIGATION ECU | |
| Map disc cannot be ejected. | 1. Navigation ECU power source circuit | NAVIGATION ECU POWER SOURCE CIRCUIT |
| 2. Replace navigation ECU | NAVIGATION ECU | |
| Vehicle position mark deviates greatly. | 1. Vehicle position mark deviates greatly | VEHICLE POSITION MARK DEVIATES GREATLY |
| 2. Replace GPS antenna | RADIO ANTENNA CORD | |
| 3. Replace navigation ECU | NAVIGATION ECU | |
| Vehicle position mark is not updated. | 1. Vehicle position mark is not updated | VEHICLE POSITION MARK IS NOT UPDATED |
| 2. Replace map disc | - | |
| 3. Replace navigation ECU | NAVIGATION ECU | |
| Current position display does not appear. | 1. Current position display does not appear | CURRENT POSITION DISPLAY DOES NOT APPEAR |
| 2. Replace GPS antenna | RADIO ANTENNA CORD | |
| 3. Replace navigation ECU | NAVIGATION ECU | |
| GPS mark is not displayed. | 1. GPS mark is not displayed | GPS MARK IS NOT DISPLAYED |
| 2. Replace GPS antenna | RADIO ANTENNA CORD | |
| 3. Replace navigation ECU | NAVIGATION ECU | |
| Voice guidance does not function. | 1. Voice guidance does not function | VOICE GUIDANCE DOES NOT FUNCTION |
| 2. Mute signal circuit between stereo component amplifier and navigation ECU | MUTE SIGNAL CIRCUIT BETWEEN STEREO COMPONENT AMPLIFIER AND NAVIGATION ECU | |
| 3. Navigation voice speaker circuit | NAVIGATION VOICE SPEAKER CIRCUIT | |
| 4. Replace map disc | - | |
| 5. Replace navigation ECU | NAVIGATION ECU | |
| Map display incomplete | 1. Map display incomplete | MAP DISPLAY INCOMPLETE |
| 2. Replace map disc | - | |
| 3. Replace navigation ECU | NAVIGATION ECU | |
| Route cannot be calculated. | 1. Route cannot be calculated | ROUTE CANNOT BE CALCULATED |
| 2. Replace map disc | - | |
| 3. Replace navigation ECU | NAVIGATION ECU | |
| Voice recognition difficulty | 1. Voice recognition difficulty | VOICE RECOGNITION DIFFICULTY |
| 2. Replace navigation ECU | NAVIGATION ECU | |
| Voice is not recognized. | 1. Voice is not recognized | VOICE IS NOT RECOGNIZED |
| 2. Microphone circuit between overhead j/b and multi-display | MICROPHONE CIRCUIT BETWEEN OVERHEAD J/B AND MULTI-DISPLAY | |
| 3. Microphone circuit between multi-display and navigation ECU | MICROPHONE CIRCUIT BETWEEN MULTI-DISPLAY AND NAVIGATION ECU | |
| 4. Steering pad switch circuit | STEERING PAD SWITCH CIRCUIT | |
| 5. Replace microphone | REPLACE MICROPHONE |
|
| 6. Replace overhead J/B | MICROPHONE AMPLIFIER | |
| 7. Replace navigation ECU | NAVIGATION ECU | |
| 8. Replace multi-display | REPLACE MULTI-DISPLAY | |
| 9. Replace radio receiver | REPLACE RADIO RECEIVER |
Steering pad switch function
PROBLEM SYMPTOMS TABLE (STEERING PAD SWITCH FUNCTION)
| Symptom | Suspected area | Proceed to |
|---|---|---|
| Voice navigation cannot be operated with steering pad switch. | 1. Steering pad switch circuit | STEERING PAD SWITCH CIRCUIT |
| 2. Replace radio receiver | REPLACE RADIO RECEIVER | |
| 3. Replace navigation ECU | NAVIGATION ECU |
Bluetooth function
PROBLEM SYMPTOMS TABLE (BLUETOOTH FUNCTION)
| Symptom | Suspected area | Proceed to |
|---|---|---|
| Cellular phone registration failure, phone directory transfer failure | 1. Cellular phone registration failure, phone directory transfer failure | CELLULAR PHONE REGISTRATION FAILURE, PHONE DIRECTORY TRANSFER FAILURE |
| Cellular phone cannot send/receive. | 1. Cellular phone cannot send/receive | CELLULAR PHONE CANNOT SEND/RECEIVE |
| 2. Cellular phone voice circuit between multi-display and navigation ECU | CELLULAR PHONE VOICE CIRCUIT BETWEEN MULTI-DISPLAY AND NAVIGATION ECU | |
| 3. Replace multi-display | REPLACE MULTI-DISPLAY | |
| 4. Replace navigation ECU | NAVIGATION ECU | |
| Cannot call in a certain place. | 1. Cannot call in a certain place | CANNOT CALL IN A CERTAIN PLACE |
| The other callers voice cannot be heard, is too quiet, or distorted. | 1. The other callers voice cannot be heard, is too quiet, or distorted | THE OTHER CALLERS VOICE CANNOT BE HEARD, IS TOO QUIET, OR DISTORTED |
| 2. Replace navigation ECU | NAVIGATION ECU | |
| 3. Replace multi-display | REPLACE MULTI-DISPLAY | |
| The other caller cannot hear your voice, or your voice is too quiet or distorted. | 1. The other caller cannot hear your voice, or your voice is too quiet or distorted | THE OTHER CALLER CANNOT HEAR YOUR VOICE, OR YOUR VOICE IS TOO QUIET OR DISTORTED |