Inspection Procedure 5: The screen is not normal in the navigation mode. (The own vehicle mark is dislocated.)


caution Before replacing the multivision display, ensure that the power supply circuit, the earth circuit, and the communication circuit are normal. (Check that the voltage is 10 V or more.)








COMMENTS ON TROUBLE SYMPTOM



PROBABLE CAUSES



  • Malfunctions of GPS antenna
  • Malfunctions of combination meter
  • Malfunctions of multivision display
  • Damaged harness wires and connectors

DIAGNOSIS PROCEDURE

STEP 1. Confirmation in MMCS service mode
Check the items below in the MMCS service mode (Refer to ).

  • Perform "Network/Connect Line 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 6.
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 6.

STEP 2. GPS reception check
(1)Start the multivision display.
(2)Press the [INFO] button.
(3)Select [Vehicle Position].
(4)Check if the GPS signals are received.

Q. Is the check result normal?
Go to Step 6.
Perform Inspection Procedure 7 "GPS signal cannot be received" (Refer to .), and then go to Step 6.

STEP 3. Check the speed meter.
Check whether the speed meter works normally. (Refer to .)

Q. Does the speedometer work normally?
Go to Step 4.
Diagnose the combination meter (Refer to Combination meter - Troubleshooting ).

STEP 4. Connector check: C-01 combination meter connector, C-144 multivision display connector

Q. Is the check result normal?
Go to Step 5.
Repair the defective connector.

STEP 5. Check the harness wire between C-01 combination meter connector terminal No.20 and C-144 multivision display connector terminal No.13.

  • Check the communication line for open circuit or short cuircuit.
note Prior to the wiring harness inspection, check intermediate connector C-139, joint connector C-39 and repair if necessary.

Q. Is the check result normal?
Go to Step 6.
Repair the wiring harness.

STEP 6. 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?
The trouble can be an intermittent malfunction (Refer to GROUP 00 - How to use Troubleshooting/inspection Service Points - How to Cope with Intermittent Malfunction ).
Replace the multivision display.