How To Proceed With Troubleshooting

NAVIGATION: NAVIGATION SYSTEM (for HDD): HOW TO PROCEED WITH TROUBLESHOOTING

HINT
* Use the following procedure to troubleshoot the navigation system.
* *: Use the Techstream.
1. VEHICLE BROUGHT TO WORKSHOP

NEXT -- Continue to next step.

2. INSPECT BATTERY VOLTAGE

(a) Measure the battery voltage with the power switch off.

Standard Voltage:

11 to 14 V

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

NEXT -- Continue to next step.

3. DIAGNOSTIC QUESTIONING AND SYMPTOM CONFIRMATION

(a) Ask the customer about symptoms and confirm malfunctions.

Result:





B -- Go to step 7
A -- Continue to next step.

4. OPERATION CHECK

(a) Refer to Check System Normal Condition Operation Check.

Result:





B -- SYMPTOM IS NORMAL OPERATION
A -- Continue to next step.

5. CHECK MULTIPLEX COMMUNICATION SYSTEM (BEAN)*

(a) Check for DTC output Reading and Clearing Diagnostic Trouble Codes.

Result:





B -- GO TO MULTIPLEX COMMUNICATION SYSTEM Multiplex Communication System
A -- Continue to next step.

6. CHECK CAN COMMUNICATION SYSTEM*

(a) Check for DTC output How to Proceed With Troubleshooting.

Result:





B -- GO TO CAN COMMUNICATION SYSTEM How to Proceed With Troubleshooting
A -- Continue to next step.

7. CHECK FOR DTC*

(a) Refer to DTC Check/Clear Navigation System (for HDD).

Result:





HINT
If more information is needed, perform a check using the "System Check Mode" screen after checking for DTCs using the Techstream.

B -- Go to step 11

C -- Go to step 12
A -- Continue to next step.

8. DTC CLEAR*

(a) Refer to DTC Check/Clear Navigation System (for HDD).

HINT
The present DTCs may not indicate actual malfunctions depending on the vehicle operating conditions.

NEXT -- Continue to next step.

9. RECHECK FOR DTC*

(a) Refer to DTC Check/Clear Navigation System (for HDD).

Result:





HINT
* Even if the malfunction symptom is not confirmed, check for DTCs. This is because the system stores history DTCs.
* If more information is needed, perform a recheck using the "System Check Mode" screen after rechecking for DTCs using the Techstream.
* Check the DTCs and inspect the area that the code indicates.
B -- Go to step 11
A -- Continue to next step.

10. DIAGNOSTIC TROUBLE CODE CHART

(a) Find the output code in Diagnostic Trouble Code Chart Navigation System (for HDD).

NOTICE:
* The navigation system outputs DTCs for the following system.
* When DTCs other than those in Diagnostic Trouble Code Chart for the navigation system are output, refer to Diagnostic Trouble Code Chart for the relevant system.
* Audio and visual system Audio and Visual System

Result:





A -- Go to step 14

B -- GO TO AUDIO AND VISUAL SYSTEM Audio and Visual System

11. CHECK HARD DISK DRIVE

(a) Enter the "Failure Diagnosis" screen. Refer to Check Hard Disk Drive in Operation Check Operation Check.

OK:

"OK" is displayed.

NG -- REPLACE HARD DISK DRIVE Removal
OK -- Continue to next step.

12. PROBLEM SYMPTOMS TABLE

(a) Refer to Problem Symptoms Table Problem Symptoms Table.

Result:





HINT
If the symptom does not recur and no DTC is output, attempt to reproduce the symptoms How To Proceed With Troubleshooting.

B -- Go to step 14
A -- Continue to next step.

13. PERFORM TROUBLESHOOTING BASED ON MALFUNCTION SYMPTOM

(a) Refer to Terminals of ECU Navigation System (for HDD).

NEXT -- Continue to next step.

14. CHECK CIRCUIT

(a) Adjust, repair or replace as necessary.

NEXT -- Continue to next step.

15. RECHECK FOR DIAGNOSTIC TROUBLE CODE

HINT
After clearing DTCs, recheck for DTCs.

NEXT -- Continue to next step.

16. PERFORM CONFIRMATION TEST

NEXT -- END