Inspection Procedure 6: The tachometer does not work (the other meters work).

COMMENTS ON TROUBLE SYMPTOM

If only the tachometer does not operate, the ignition signal from the engine-ECU may not be received or the combination meter may have a problem.

PROBABLE CAUSES

Malfunction of combination meter
Malfunction of engine-ECU

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

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

Check if diagnosis code is set in the combination meter.

Q. Is the diagnosis code set?

Troubleshoot the combination meter (Refer to

). Complete the combination meter troubleshooting, then go to Step 6.

Go to Step 3.

STEP 3. M.U.T.-III other system diagnosis code

Check if diagnosis code is set in the engine-ECU.

Q. Is the diagnosis code set?

Troubleshoot the engine (Refer to GROUP 13A - Troubleshooting

<4G6>, GROUP 13B - Troubleshooting

<4D5> or GROUP 13C - Troubleshooting

<4N1>). Complete the engine troubleshooting, and then go to Step 6.

Go to Step 4.

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

Item 2: Tachometer (Refer to ).

Q. Is the check result normal?

Go to Step 5.

Replace the combination meter (Refer to

), and then go to Step 6.

STEP 5. M.U.T.-III special function

Item 4: Pointer (AUTO) (Refer to ).

Q. Is the check result normal?

Go to Step 6.

Replace the combination meter (Refer to

), and then go to Step 6.

STEP 6. Retest the system

Check that the tachometer 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.