NAVIGATION SYSTEM (for DVD) PROBLEM SYMPTOMS TABLE

Tech Tips

Use the table below to help determine the cause of problem symptoms. If multiple suspected areas are listed, 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.
Inspect the fuses and relays related to this system before inspecting the suspected areas below.

Display Function
Symptom	Suspected Area	See page
Black screen (No image appears on navigation/audio screen).	Proceed to "Black Screen"	Click here
	Proceed to "Display Signal Circuit between Navigation ECU and Parking Assist ECU"*1	Click here
	Display and navigation module display	Click here
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"	Click here
	Proceed to "Illumination Circuit"	Click here
	Display and navigation module display	Click here
Display does not dim (does not change to night screen) with tail switch on.	Check if the light control rheostat knob position is not on the tail cancel position.	-
	Proceed to "Display does not Dim when Light Control Switch is Turned ON"	Click here
	Display and navigation module display	Click here
Panel switches do not function.	Proceed to "Panel Switches do not Function"	Click here
	Proceed to "Steering Pad Switch Circuit"	Click here
	Display and navigation module display	Click here
Touch panel switch does not function.	Proceed to "Touch Panel Switch does not Function"	Click here
Touch panel switch does not function.	Display and navigation module display	Click here
Screen is distorted.	Proceed to "Navigation ECU Power Source Circuit"	Click here
Screen is distorted.	Display and navigation module display	Click here
Screen flicker or color distortion	Proceed to "Screen Flicker or Color Distortion"	Click here
	Proceed to "Display Signal Circuit between Navigation ECU and Parking Assist ECU"*1	Click here
	Display and navigation module display	Click here
DVD image cannot be displayed on front screen (Parking brake is on).*2	Proceed to "DVD Image Signal Circuit between Radio receiver and Navigation ECU"	Click here
	Proceed to "Parking Brake Switch Circuit"	Click here
	Radio receiver assembly	Click here
	Display and navigation module display	Click here
Navigation function switches can be operated while vehicle is being driven.	Display and navigation module display	Click here
Immediately after the engine switch is turned on (ACC), the diagnosis mode screen will be displayed on the multi-display.	Proceed to "TC Terminal Circuit"	Click here
	Display and navigation module display	Click here

*1: w/ Parking Assist Monitor System
*2: w/ DVD Changer Model

Navigation Function
Symptom	Suspected Area	See page
Map disc cannot be inserted.	Proceed to "Map Disc cannot be Inserted"	Click here
Map disc cannot be inserted.	Navigation module board	Click here
Map disc cannot be ejected.	Navigation module board	Click here
Map display is incomplete.	Proceed to "Map Display Incomplete"	Click here
Map display is incomplete.	Navigation module board	Click here
Map disc reading error.	Proceed to "Map Disc Read Error"	Click here
Map disc reading error.	Navigation module board	Click here
Vehicle position mark deviates.	Proceed to "Vehicle Position Mark Deviates Greatly"	Click here
	Navigation antenna assembly	Click here
	Display and navigation module display	Click here
Cursor or map rotates when vehicle is stopped.	Proceed to "Cursor or Map Rotates When Vehicle is Stopped"	Click here
Cursor or map rotates when vehicle is stopped.	Display and navigation module display	Click here
Vehicle position mark is not updated.	Proceed to "Vehicle Position Mark is not Updated"	Click here
	Map disc	-
	Navigation module board	Click here
	Display and navigation module display	Click here
Current position display does not appear.	Proceed to "Current Position Display does not Appear"	Click here
	Map disc	-
	Navigation antenna assembly	Click here
	Navigation module board	Click here
	Display and navigation module display	Click here
GPS mark is not displayed.	Proceed to "GPS Mark is not Displayed"	Click here
	Navigation antenna assembly	Click here
	Display and navigation module display	Click here
Voice guidance does not function.	Proceed to "Voice Guidance does not Function"	Click here
	Proceed to "Speaker Circuit"	Click here
	Map disc	-
	Navigation module board	Click here
	Display and navigation module display	Click here
	Stereo component amplifier assembly	Click here
	Radio receiver assembly	Click here
Route cannot be calculated.	Proceed to "Route cannot be Calculated"	Click here
	Map disc	-
	Navigation module board	Click here
	Display and navigation module display	Click here
Voice recognition is difficult.	Proceed to "Voice Recognition Difficulty"	Click here
	Proceed to "Microphone Circuit between Microphone and Navigation ECU"	Click here
	Display and navigation module display	Click here
Voice is not recognized.	Proceed to "Voice is not Recognized"	Click here
	Proceed to "Microphone Circuit between Microphone and Navigation ECU"	Click here
	Proceed to "Steering Pad Switch Circuit"	Click here
	Display and navigation module display	Click here
Voice menu screen is not displayed.	Proceed to "Steering Pad Switch Circuit"	Click here
Voice menu screen is not displayed.	Display and navigation module display	Click here
Reverse signal does not change in vehicle signal check mode screen.	Proceed to "Reverse Signal Circuit"	Click here
	Display and navigation module display.	Click here
"MIC" is not displayed on system check mode screen.	Proceed to "Microphone Circuit between Microphone and Navigation ECU"	Click here
"MIC" is not displayed on system check mode screen.	Display and navigation module display	Click here
"AUX" is not displayed on system check mode screen.	Proceed to "Sound Signal Circuit between Radio Receiver Assembly and Stereo Jack Adapter"	Click here
	Radio receiver assembly	Click here
	Display and navigation module display	Click here

Steering Pad Switch Function
Symptom	Suspected Area	See page
System cannot be operated by steering pad switch.	Proceed to "Steering Pad Switch Circuit"	Click here
System cannot be operated by steering pad switch.	Display and navigation module display	Click here
Illumination for steering pad switch does not come on with tail switch on.	Proceed to "Illumination Circuit"	Click here
	Display and navigation module display	Click here

"Bluetooth" Hands-free Function
Symptom	Suspected Area	See page
Bluetooth inoperative.	Proceed to "Microphone Circuit between Microphone and Navigation ECU"	Click here
	Radio receiver assembly	Click here
	Display and navigation module display	Click here
Cellular phone registration failure, phone directory transfer failure	Proceed to "Cellular Phone Registration Failure, Phone Directory Transfer Failure"	Click here
Cellular phone cannot send/receive.	Proceed to "Cellular Phone cannot Send / Receive"	Click here
	Proceed to "Steering Pad Switch Circuit"	Click here
	Radio receiver assembly	Click here
Cellular phone cannot make calls in a certain place.	Proceed to "Cannot Call in a Certain Place"	Click here
Other caller's voice cannot be heard, is too quiet, or distorted.	Proceed to "The Other Caller's Voice cannot be Heard, is Quiet, or Distorted"	Click here
	Radio receiver assembly	Click here
	Stereo component amplifier assembly	Click here
	Display and navigation module display	Click here
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"	Click here
	Proceed to "Microphone Circuit between Microphone and Navigation ECU"	Click here
	Radio receiver assembly	Click here