How to Proceed With Troubleshooting

NAVIGATION / MULTI INFO DISPLAY: NAVIGATION SYSTEM: 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

(a) 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 6
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 CAN COMMUNICATION SYSTEM*

(a) Check for DTC output Diagnosis System.

Result:





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

6. CHECK FOR DTC*

(a) Refer to DTC Check/Clear Reading and Clearing Diagnostic Trouble Codes.

Result:





B -- Go to step 10
A -- Continue to next step.

7. DTC CLEAR*

(a) Refer to DTC Check/Clear Reading and Clearing Diagnostic Trouble Codes.

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

NEXT -- Continue to next step.

8. RECHECK FOR DTC*

(a) Refer to DTC Check/Clear Reading and Clearing Diagnostic Trouble Codes.

Result:





HINT
* Even if the malfunction symptom is not confirmed, check for DTCs. This is because the system stores history DTCs.
* Check the DTCs and inspect the area code indicates.
B -- Go to step 10
A -- Continue to next step.

9. DIAGNOSTIC TROUBLE CODE CHART

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

NEXT -- Go to step 12

10. 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, perform the symptom reproduction method How To Proceed With Troubleshooting.

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

11. PERFORM TROUBLESHOOTING BASED ON MALFUNCTION SYMPTOM

(a) Refer to Terminals of ECU Pinout Values and Diagnostic Parameters.

NEXT -- Continue to next step.

12. CHECK CIRCUIT

(a) Adjust, repair or replace as necessary.

NEXT -- Continue to next step.

13. RECHECK FOR DIAGNOSTIC TROUBLE CODE

HINT
After clearing the DTCs, recheck for DTCs.

NEXT -- Continue to next step.

14. PERFORM CONFIRMATION TEST

NEXT -- END