Inspection Procedure 1: No Navigation Screen is Displayed.


caution Whenever the multivision display is replaced, ensure that the power supply circuit and the earthing circuit are normal. (Check that the voltage is 10 V or more.)








DIAGNOSIS PROCEDURE

STEP 1. Connector check: D-210, D-208 multivision display connector

Q. Is D-210 multivision display connector in good condition?
Go to Step 2.
Repair or replace the damaged component(s).

STEP 2. Resistance measurement at D-210 multivision display connector.
(1)Disconnect multivision display connector D-210 and measure the resistance available at the wiring harness side of the connector.
(2)Measure the resistance between D-210 multivision display connector terminal 9 and earth.
OK: The resistance should be 2 ohms or less

Q. Is the measured resistance 2 ohms or less?
Go to Step 4.
Go to Step 3.

STEP 3. Check the wiring harness between D-210 multivision display connector terminal No.9 and earth.

  • Check the earth wires for open circuit.

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 ).
Repair the wiring harness.

STEP 4. Resistance measurement at D-208 multivision display connector.
(1)Disconnect multivision display connector D-208 and measure the resistance available at the wiring harness side of the connector.
(2)Measure the resistance between D-208 multivision display connector terminal 25 and earth.
OK: The resistance should be 2 ohms or less

Q. Is the measured resistance 2 ohms or less?
Go to Step 6.
Go to Step 5.

STEP 5. Check the wiring harness between D-208 multivision display connector terminal No.25 and earth.

  • Check the earth wires for open circuit.

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 ).
Repair the wiring harness.

STEP 6. Voltage measurement at D-210 multivision display connector.
(1)Disconnect the connector, and measure at the wiring harness-side connector.
(2)Voltage between D-210 multivision display terminal No.17 and the body earth
OK: System voltage

Q. Is the check result normal?
Go to Step 8.
Go to Step 7.

STEP 7. Check the wiring harness between D-210 multivision display connector terminal No.17 and fusible link (1).
note Prior to the wiring harness inspection, check intermediate connector D-241, and repair if necessary.

  • Check the power supply lines (battery supply) for open circuit and short circuit.

Q. Is the check result normal?
Go to Step 8.
Repair the wiring harness.

STEP 8. Voltage measurement at D-210 multivision display connector.
(1)Disconnect the connector, and measure at the wiring harness-side connector.
(2)Turn the ignition switch to the ACC position.
(3)Voltage between D-210 multivision display terminal No.14 and the body earth
OK: System voltage

Q. Is the check result normal?
Go to Step 10.
Go to Step 9.

STEP 9. Check the wiring harness between D-210 multivision display connector terminal No.14 and ignition switch (ACC).
note Prior to the wiring harness inspection, check intermediate connector D-241, D-238 and repair if necessary.

  • Check the power supply lines (battery supply) for open circuit and short circuit.

Q. Is the check result normal?
Refer to Inspection procedure 2 "Malfunction of the ignition switch power supply system ."
Repair the wiring harness.

STEP 10. Voltage measurement at D-208 multivision display connector.
(1)Disconnect the connector, and measure at the wiring harness-side connector.
(2)Voltage between D-208 multivision display terminal No.21 and the body earth
OK: System voltage

Q. Is the check result normal?
Go to Step 12.
Go to Step 11.

STEP 11. Check the wiring harness between D-208 multivision display connector terminal No.21 and fusible link (1).
note Prior to the wiring harness inspection, check intermediate connector D-241, and repair if necessary.

  • Check the power supply lines (battery supply) for open circuit and short circuit.

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 ).
Repair the wiring harness.

STEP 12. Retest the system
Check if the multivision display power is turned ON.

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.