Inspection Procedure 9: The multi information display screen cannot be changed with the operation of the meter information switch.


caution Before replacing the combination meter, be sure to check that the power supply circuit, earth circuit, and communication circuit are normal.






COMMENTS ON TROUBLE SYMPTOM



PROBABLE CAUSES



  • Malfunction of meter information switch
  • Malfunction of combination meter
  • Damaged harness wires and connectors

DIAGNOSIS PROCEDURE

STEP 1. M.U.T.-III diagnosis code
Check if diagnosis code is set to the combination meter.

Q. Is the diagnosis code set?
Refer to .
Go to Step 2.

STEP 2. Connector check: C-37 meter information switch connector

Q. Is the check result normal?
Go to Step 3.
Repair the connector.

STEP 3. Meter information switch check
Check the meter information switch. Refer to .

Q. Is the check result normal?
Go to Step 4.
Replace the meter information switch.

STEP 4. Resistance measurement at the C-37 meter information switch connector
(1)Disconnect the meter information switch connector, and then measure at the wiring harness side.
(2)Measure the resistance from C-37 meter information switch connector terminal No. 4 to body earth.
OK: Continuity exists (2 Ω or less)

Q. Is the check result normal?
Go to Step 6.
Go to Step 5.

STEP 5. Check the wiring harness between the C-37 meter information switch connector terminal No. 4 and the body earth.
Check the earth wires for open circuit.

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

STEP 6. Connector check: C-01 combination meter connector

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

STEP 7. Check the wiring harness between the C-01 combination meter connector terminal No. 3 and the C-37 meter information switch terminal No. 1.
Check the output lines for open circuit.

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

STEP 8. Retest the system
Check that the multi information display screen switches normally when the meter information switch is operated.

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 combination meter.