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
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 How to Proceed With Troubleshooting.
Result:
B -- GO TO CAN COMMUNICATION SYSTEM How to Proceed With Troubleshooting
A -- Continue to next step.
6. CHECK FOR DTC*
(a) Refer to DTC Check/Clear Reading and Clearing Diagnostic Trouble Codes.
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 10
C -- Go to step 11
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.
* 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 10
A -- Continue to next step.
9. DIAGNOSTIC TROUBLE CODE CHART
(a) Find the output code in Diagnostic Trouble Code Chart Navigation System.
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 13
B -- GO TO AUDIO AND VISUAL SYSTEM (w/ Navigation System) Audio and Visual System (w/ Navigation System)
10. 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.
11. 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 13
A -- Continue to next step.
12. PERFORM TROUBLESHOOTING BASED ON MALFUNCTION SYMPTOM
(a) Refer to Terminals of ECU Pinout Values and Diagnostic Parameters.
NEXT -- Continue to next step.
13. CHECK CIRCUIT
(a) Adjust, repair or replace as necessary.
NEXT -- Continue to next step.
14. RECHECK FOR DIAGNOSTIC TROUBLE CODE
HINT
After clearing DTCs, recheck for DTCs.
NEXT -- Continue to next step.
15. PERFORM CONFIRMATION TEST
NEXT -- END