Inspection Procedure 5: The speedometer does not work (The 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 CAN bus diagnostics
Use the M.U.T.-III to diagnose the CAN bus lines.

Q. Is the check result normal?
Go to Step 2.
Repair the CAN bus line (Refer to GROUP 54C - Troubleshooting ). Complete the CAN troubleshooting, and then go to Step 6.

STEP 2. M.U.T.-III other system diagnosis code.
Check whether the MPI system-related diagnosis code is set.

Q. Is the diagnosis code set?
Diagnose MPI system. (Refer to GROUP 13A, Troubleshooting .) After diagnosing the MPI system, go to Step 6.
Go to Step 3.

STEP 3. M.U.T.-III other system data list
Check the vehicle speed signal data list of MPI system.
Item No.4: Vehicle speed signal (Refer to GROUP 13A, Data list reference table .)

Q. Is the check result normal?
Go to Step 4.
Diagnose MPI system. (Refer to GROUP 13A, Troubleshooting .) After diagnosing the MPI system.

STEP 4. Check the speedometer.
(1)Connect the M.U.T.-III to the diagnosis connector.
(2)Use the M.U.T.-III to enter simulated vehicle speed.

  • Item No.1: Speedometer (Refer to .)
OK: The speedometer shows that simulated vehicle speed.

Q. Is the check result normal?
Go to Step 5.
Replace combination meter, then go to Step 6.

STEP 5. M.U.T.-III Special Function

  • Item 4: Pointer (Refer to ).

Q. Is the check result normal?
Go to Step 6.
Replace the combination meter, and then go to Step 6.

STEP 6. Retest the system.
Check that the speedometer works normally.

Q. Is the check result 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 ).
Go to Step 1.