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 engine 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 (w/ navigation system) Audio and Visual System (w/ Navigation System)

Result:





A -- Go to step 14

B -- GO TO AUDIO AND VISUAL SYSTEM (w/ Navigation System) Audio and Visual System (w/ Navigation 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