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

caution

Before replacing the combination meter, be sure to check that the power supply circuit, earth circuit, and communication circuit are normal.

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

). Complete the CAN troubleshooting, and then go to Step 6.

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

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

Q. Is the diagnosis code set?

Troubleshoot the engine (Refer to GROUP 13A - Diagnosis Code Chart

<4B1>, GROUP 13C -Troubleshooting

<4J1>, GROUP 13D -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, and 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 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