Inspection Procedure 3: Tachometer does not Work (other meters work).

COMMENTS ON TROUBLE SYMPTOM

If only the tachometer does not operate, the engine-ECU <M/T> or engine-A/T-ECU <A/T> system may not be sending ignition signal, or the combination meter, the wiring harness or its connector may be defective.

PROBABLE CAUSES

Malfunction of combination meter
Damaged harness wires and connectors

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 satisfactory?

	Go to Step 2.

	Repair the CAN bus lines (Refer to GROUP 54D - Troubleshooting ). After diagnosing the CAN bus lines, go to Step 5.

STEP 2. M.U.T.-III other system diagnosis code

Check whether the MPI system or Diesel system-related diagnosis code is set.

Q. Is the diagnosis code set?

	Diagnose the MPI system or Diesel system (Refer to GROUP 13A, Troubleshooting <3800> or GROUP 13B, Troubleshooting <3200> or GROUP 13D, Troubleshooting <3000>). After diagnosing the MPI system, go to Step 5.

	Go to Step 3.

STEP 3. M.U.T.-III data list

Item No.5: Tachometer (Refer to .)

Q. Is the check result satisfactory?

	Go to Step 4.

	Diagnose the MPI system or Diesel system (Refer to GROUP 13A, Troubleshooting <3800> or GROUP 13B, Troubleshooting <3200> or GROUP 13D, Troubleshooting <3000>). After diagnosing the MPI system, go to Step 5.

STEP 4. M.U.T.-III actuator test

Item No.2: Tachometer

OK: The tachometer operates.

Q. Is the check result satisfactory?

	Go to Step 5.

	Replace the combination meter and then go to Step 5.

STEP 5. Retest the system.

Check that the tachometer works normally.

Q. Is the check result satisfactory?

	The procedure is complete.

	Go to Step 1.