Inspection Procedure 5: Speedometer does not work (Other meters work).




COMMENTS ON TROUBLE SYMPTOM
If only the speedometer does not operate, the combination meter, the wiring harness or its connector may be defective.

PROBABLE CAUSES

  • Damaged harness wires and connectors
  • Malfunction of combination meter

DIAGNOSIS PROCEDURE

STEP 1. M.U.T.-III other system diagnosis code.
Check whether the DIESEL system-related diagnosis code is set.

Q. Is the diagnosis code set?
Diagnose DIESEL system. (Refer to GROUP 13A, Troubleshooting .) After diagnosing the DIESEL system, go to Step 5.
Go to Step 2.

STEP 2. M.U.T.-III other system data list
Check the vehicle speed signal data list of DIESEL system.
Item No.4: Vehicle speed sensor (Refer to GROUP 13A, Data list reference table .)

Q. Is the check result satisfactory?
Go to Step 3.
Diagnose DIESEL system. (Refer to GROUP 13A, Troubleshooting .) After diagnosing the DIESEL system.

STEP 3. Connector check: Joint connector C-127 and combination meter connector C-112.




Q. Is joint connector C-127 and combination meter connector C-112 in good condition?

Go to Step 4.

Repair or replace the damage component(s).

STEP 4. Check the wiring harness between joint connector C-127 (terminal 19) and combination meter connector C-112 (terminal 35).
Check the input lines for open circuit and short circuit.




Q. Is the wiring harness between joint connector C-127 (terminal 19) and combination meter connector C-112 (terminal 35) in good condition?

Go to Step 5.

Repair or replace the damage component(s).

STEP 5. Retest the system.

Q. Is the speedometer normal?
The procedure is complete. (If no malfunctions are found in all steps, an intermittent malfunction is suspected. Refer to GROUP 00 / How to Cope with Intermittent Malfunction ).
Replace the combination meter assembly.