NAVIGATION SYSTEM (for DVD) HOW TO PROCEED WITH TROUBLESHOOTING

VEHICLE BROUGHT TO WORKSHOP

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INSPECT BATTERY VOLTAGE

If the voltage is below 11 V, recharge or replace the battery before proceeding.

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BASIC INSPECTION

1. Turn the ignition switch to ACC.

2. Check whether or not the display appears on the display and navigation module display.

   Result

   Result	Proceed to
   Display appears	A
   Display does not appear	B

   
   

   B

   Go to step 6

   A

CHECK CAN COMMUNICATION SYSTEM*

1. Use the intelligent tester to check if the CAN communication system is functioning normally.

   Result

   Result	Proceed to
   CAN DTC is not output	A
   CAN DTC is output (for LHD with Entry and Start System)	B
   CAN DTC is output (for LHD without Entry and Start System)	C
   CAN DTC is output (for RHD with Entry and Start System)	D
   CAN DTC is output (for RHD without Entry and Start System)	E

   
   

   B

   Go to CAN Communication System Click here

   C

   Go to CAN Communication System Click here

   D

   Go to CAN Communication System Click here

   E

   Go to CAN Communication System Click here

   A

CHECK FOR DTC*

1. Check for DTCs and note any codes that are output.

2. Clear the DTCs.

3. Check for DTCs. Based on the DTCs output in the first step, try to force output of the navigation system DTCs by simulating the conditions indicated by the DTCs.

   Tech Tips

   
   

   • Even if the malfunction symptom is not confirmed, check for DTCs as the system stores past DTCs.

   • Refer to the detailed description on the diagnostic screen as necessary Click here.

   • Check and clear past diagnostic trouble codes. Check the diagnostic trouble code and inspect the area the code indicates Click here.

   Result

   Result	Proceed to
   DTC is not output	A
   DTC is output	B

   
   

   B

   Go to step 8

   A

DIAGNOSTIC TROUBLE CODE CHART

1. Find the output code in Diagnostic Trouble Code Chart Click here.

   Note

   The navigation system outputs DTCs for the following systems. When DTCs other than those in Diagnostic Trouble Code Chart for the navigation system are output, refer to Diagnostic Trouble Code Chart for the appropriate system.

   
   

   • Audio and visual system (w/ Navigation System) Click here

   • Rear seat entertainment system (w/ Rear Seat Entertainment System) Click here

   • TOYOTA parking assist-sensor system (for 8 Sensor Type) Click here

   • Parking assist monitor system Click here

   • Wide view front monitor system Click here

   • Side monitor system (w/ Parking Assist Monitor System) Click here

   Result

   Result	Proceed to
   DTCs for navigation system are output	A
   DTCs for audio and visual system (w/ Navigation System) are output	B
   DTCs for rear seat entertainment system (w/ Rear Seat Entertainment System) are output	C
   DTCs for TOYOTA parking assist-sensor system (for 8 Sensor Type) are output	D
   DTCs for parking assist monitor system are output	E
   DTCs for wide view front monitor system are output	F
   DTCs for side monitor system (w/ Parking Assist Monitor System) are output	G

   
   

   B

   GO TO AUDIO AND VISUAL SYSTEM (w/ Navigation System)

   C

   GO TO REAR SEAT ENTERTAINMENT SYSTEM

   D

   GO TO TOYOTA PARKING ASSIST-SENSOR SYSTEM (for 8 Sensor Type)

   E

   GO TO PARKING ASSIST MONITOR SYSTEM

   F

   GO TO WIDE VIEW FRONT MONITOR SYSTEM

   G

   GO TO SIDE MONITOR SYSTEM (w/ Parking Assist Monitor System)

   A

PROBLEM SYMPTOMS TABLE

1. Refer to Problem Symptoms Table Click here.

   Result

   Result	Proceed to
   Fault is not listed in problem symptoms table	A
   Fault is listed in problem symptoms table	B

   Tech Tips

   If the symptom does not recur and no DTC is output, perform the symptom simulation method Click here.

   
   

   B

   Go to step 9

   A

OVERALL ANALYSIS AND TROUBLESHOOTING

1. Terminals of ECU Click here.

2. Inspect the speakers.

   
   

   1. Inspect the front No. 1 speaker assembly Click here.

   2. Inspect the front No. 2 speaker assembly Click here.

   3. Inspect the front No. 3 speaker assembly Click here.

   4. Inspect the front No. 4 speaker assembly Click here.

   5. Inspect the rear speaker set Click here.

   6. Inspect the rear No. 2 speaker assembly (for 5 Doors: Click here.

   7. Inspect the rear header speaker assembly Click here.

   8. Inspect the No. 1 speaker with box assembly.

      
      

      • for 5 Doors: Click here.

      • for 3 Doors: Click here.

3. Inspect the steering pad switch assembly Click here.

   
   

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CHECK CIRCUIT

1. Adjust, repair or replace as necessary.

   
   

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RECHECK FOR DIAGNOSTIC TROUBLE CODE

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PERFORM CONFIRMATION TEST

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