INSPECTION PROCEDURE 2: Check the Multi Display Station Power Supply Circuit.






COMMENTS ON TROUBLE SYMPTOM


The earth circuit, the ignition switch (ACC) circuit is suspected to be open or defective.

POSSIBLE CAUSES




DIAGNOSIS PROCEDURE


STEP 1. Check the following connector: C-108 multi display station connector




Q. Is the check result normal?

Go to Step 2.

Repair the defective connector.

STEP 2. Measure the voltage at C-108 multi display station connector.




(1)Disconnect the connector, and measure at the wiring harness side.
(2)Ignition switch: LOCK (OFF) position

(3)Voltage between C-108 multi display station connector terminal No.26 and body earth
OK: System voltage

Q. Is the check result normal?

Go to Step 4.

Go to Step 3.

STEP 3. Check the harness wire between battery (fusible link No.20) and C-108 multi display station connector terminal No.26.







note Prior to the wiring harness inspection, check joint connector C-132 or junction block connector C-209, C-213,and repair if necessary.

  • Check the battery power supply open circuit.

Q. Is the check result normal?

Retest the system.

Repair the wiring harness.

STEP 4. Measure the voltage at C-108 multi display station connector.




(1)Disconnect the connector, and measure at the wiring harness side.
(2)Ignition switch: ACC

(3)Voltage between C-108 multi display station connector terminal No.25 and body earth
OK: System voltage

Q. Is the check result normal?

Go to Step 6.

Go to Step 5.

STEP 5. Check the harness wire between ignition switch (ACC) and C-108 multi display station connector terminal No.25.







note Prior to the wiring harness inspection, check joint connector C-127 or junction block connector C-207, C-208 and repair if necessary.

  • Check the ACC power supply open circuit.

Q. Is the check result normal?

Retest the system.

Repair the wiring harness.

STEP 6. Measure the resistance at C-108 multi display station connector.




(1)Disconnect the connector, and measure at the wiring harness side.

(2)Resistance between C-108 multi display station connector terminal No.28 and body earth
OK: Continuity exists (2 Ω or less)

Q. Is the check result normal?

Go to Step 8.

Go to Step 7.

STEP 7. Check the harness wire between C-06 centre display or multi display station connector terminal No.28 and body earth.





note Prior to the wiring harness inspection, check joint connector C-120 <R.H. drive vehicles>, and repair if necessary.

  • Check the earth wires for open circuit.

Q. Is the check result normal?

Retest the system.

Repair the wiring harness.

STEP 8. Replace the multi display station temporarily and retest the system.


Check that the multi display station correctly when the multi display station is replaced temporarily.

Q. Is the check result normal?

Replace the multi display station.
Go to Step 9.

STEP 9. Retest the system.


Check that the multi display station correctly.

Q. Is the check result normal?

The procedure is complete.
Return to Step 1.