Inspection Procedure 3: The screen is not normal in the navigation mode. (The own vehicle mark is dislocated.): Diagnosis

Required Special Tools:

• MB991223: Harness Set
• MB992006: Extra Fine Probe

1. STEP 1. Confirmation in MMCS service mode 

   Check the items below in the MMCS service mode (Refer to SERVICE MODE  ).

   • Perform "COMMUNICATIONS & CONNECTION CHECK " in the MMCS service mode to check that the communication and wire connection with the GPS are in good condition.
   • Perform "VEHICLE SIGNAL CHECK ", and then check the status of the vehicle speed signal.
   • Perform "SENSOR CHECK ", and then check the status of the vehicle speed sensor and the gyro sensor.

   Q: Is the check result normal? 

   • YES (OK for all)  : Go to  Step 5
   • NO < GPS is not OK >  : Go to Step 2
   • NO < The vehicle speed sensor is not OK, or vehicle speed pulse does not increase after starting from a standstill >  : Go to  Step 3
   • NO < Gyro sensor is not OK >  : Go to  Step 5
2. STEP 2. GPS reception check 
   1. Start the multivision display.
   2. Press the "INFO" button.
   3. Select "GPS Information".
   4. Check if the GPS signals are received.

   Q: Is the check result normal? 

   • YES:  Go to  Step 5
   • NO:  Perform Inspection Procedure 5 "GPS signal cannot be received" (Refer to INSPECTION PROCEDURE 5: GPS SIGNAL CANNOT BE RECEIVED.  .), and then go to  Step 5.
3. STEP 3. Check the speed meter. 

   Check whether the speed meter works normally. (Refer to ON-VEHICLE SERVICE .)

   Q: Does the speedometer work normally? 

   • YES:  Go to Step 4
   • NO:  Diagnose the combination meter (Refer to DIAGNOSTIC TROUBLE CODE TABLE ).
4. STEP 4. Check of short to power supply, short to ground, and open circuit in SPD line between multivision display connector and combination meter connector 

   Q: Is the check result normal? 

   • YES:  Go to Step 5
   • NO:  Repair the connector(s) or wiring harness.
5. STEP 5. Check of the troubles 

   Drive the vehicle for some time with the GPS signals being received, and check if the own vehicle mark is dislocated.

   Q: Is the check result normal? 

   • YES:  The trouble can be an intermittent malfunction (Refer to HOW TO COPE WITH INTERMITTENT MALFUNCTION ).
   • NO:  Replace the multivision display.