Problem Symptoms Table
HINT:
- Use the table below to help determine the cause of the problem symptom. The potential causes of the symptoms are listed in order of probability in the "Suspected Area" column of the table. Check each symptom by checking the suspected areas in the order they are listed. Replace parts as necessary.
- Problem symptoms may occur if the electric power control system's functions malfunction. Follow the HOW TO PROCEED WITH TROUBLESHOOTING procedures.
Display function
PROBLEM SYMPTOMS TABLE - DISPLAY FUNCTION
| Symptom | Suspected Area |
|---|---|
| Pressing power switch does not turn on system. | Multi-Display power source circuit |
| AVC-Lan circuit | |
| Multi-Display | |
| Black screen (no image appears on navigation/audio screen). | Proceed to "no image appears on multi-display" |
| Multi-Display power source circuit | |
| Illumination circuit | |
| AVC-Lan circuit | |
| Multi-Display | |
| Illumination for panel switch does not come on with TAIL switch on. | Proceed to "illumination for panel switch does not come on with tail switch on" |
| Illumination circuit | |
| Multi-Display | |
| Display does not dim (night screen) with tail switch on. | Proceed to "display does not dim when light control switch is turned on" |
| Dimmer signal circuit | |
| Multi-Display | |
| Power does not turn off (the screen remains on). | Multi-Display power source circuit |
| Multi-Display | |
| Panel switches do not function. | Proceed to "panel switches do not function" |
| Steering pad switch circuit | |
| Multi-Display power source circuit | |
| Multi-Display | |
| Touch panel switch does not function. | Proceed to "touch panel switch does not function" |
| Steering pad switch circuit | |
| Multi-Display power source circuit | |
| Multi-Display | |
| Navigation screen is not displayed. | Map disc |
| Navigation ECU | |
| Multi-Display | |
| Navigation screen flicker or color distortion. | Proceed to "screen flicker or color distortion" |
| Navigation ECU | |
| Multi-Display | |
| DVD image cannot be displayed on multi-displayed (parking brake is on)*. | Proceed to "display signal circuit between multi-display and radio receiver" |
| Parking brake switch circuit | |
| Radio receiver | |
| Multi-Display | |
| Navigation function switches can be operated while vehicle is running. | Vehicle speed signal circuit between multi-display and combination meter |
Navigation function
PROBLEM SYMPTOMS TABLE - NAVIGATION FUNCTION
| Symptom | Suspected Area |
|---|---|
| Map disc cannot be inserted. | Proceed to "map disc cannot be inserted" |
| Navigation ECU power source circuit | |
| Navigation ECU | |
| Map disc cannot be ejected. | Proceed to "map disc cannot be ejected" |
| Navigation ECU power source circuit | |
| Navigation ECU | |
| Vehicle position mark deviates greatly. | Proceed to "Vehicle position mark deviates greatly" |
| Navigation antenna | |
| Navigation ECU | |
| Cursor or map rotates when vehicle is stopped. | Proceed to "cursor or map rotates when vehicle is stopped" |
| Navigation ECU | |
| Vehicle position mark is not updated. | Proceed to "Vehicle position mark is not updated" |
| Map disc | |
| Navigation ECU | |
| Current position display does not appear. | Proceed to "Current position display does not appear" |
| Map disc | |
| Navigation antenna | |
| Navigation ECU | |
| GPS Mark is not displayed. | Proceed to "GPS mark is not displayed" |
| Navigation antenna | |
| Navigation ECU | |
| Voice guidance does not function. | Proceed to "voice guidance does not function" |
| Navigation VOICE CIRCUIT | |
| Map disc | |
| Stereo component amplifier | |
| Map display incomplete. | Proceed to "map display incomplete" |
| Map disc | |
| Navigation ECU | |
| Route cannot be calculated. | Proceed to "route cannot be calculated" |
| Map disc | |
| Navigation ECU | |
| Speed signal does not change in navigation check mode. | Vehicle speed signal circuit between navigation ECU and combination meter |
| Reverse signal does not change in navigation check mode. | Reverse signal circuit |
Steering pad switch function
PROBLEM SYMPTOMS TABLE - STEERING PAD SWITCH FUNCTION
| Symptom | Suspected Area |
|---|---|
| The system cannot be operated by steering pad switch. | Steering pad switch circuit |
| Radio receiver | |
| Illumination for steering pad switch does not come on with tail switch on. | Illumination circuit |
| Radio receiver |
Rear power seat module switch function
PROBLEM SYMPTOMS TABLE - REAR POWER SEAT MODULE SWITCH FUNCTION
| Symptom | Suspected Area |
|---|---|
| The system cannot be operated by rear power seat module switch | Rear power seat module switch power source circuit |
| AVC-Lan circuit | |
| Rear power seat module switch (for Power Seat) | |
| Rear power seat module switch (for Ottoman) | |
| Rear power seat module switch (for Fixed Seat Type) | |
| Radio receiver |
"Bluetooth" function
PROBLEM SYMPTOMS TABLE - BLUETOOTH FUNCTION
| Symptom | Suspected Area |
|---|---|
| Cellular phone registration failure, phone directory transfer failure. | Proceed to "cellular phone registration failure, phone directory transfer failure" |
| Cellular phone cannot send/receive. | Proceed to "cellular phone cannot send / receive" |
| Steering pad switch circuit | |
| Radio receiver | |
| Cannot call in a certain place. | Proceed to "cannot call in a certain place" |
| The other caller's voice cannot be heard, is too quiet, or distorted. | Proceed to "the other caller's voice cannot be heard, is too quiet, or distorted" |
| Multi-Display | |
| The other caller cannot hear your voice, or your voice is too quiet or distorted. | Proceed to "the other caller cannot hear your voice, or your voice is too quiet or distorted" |
| Microphone circuit between overhead J/B and multi-display | |
| Microphone | |
| Microphone amplifier | |
| Multi-Display |