Inspection Procedure 5: The speedometer 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 speedometer does not operate, the ABS <vehicles with ABS> or ASC <vehicles with ASC> system and combination meter may have a problem.

PROBABLE CAUSES

Malfunction of ABS-ECU <vehicles with ABS>
Malfunction of ASC-ECU <vehicles with ASC>
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 7.

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 7.

Go to Step 3.

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

Check if diagnosis code is set to the ABS <vehicles with ABS> or ASC <vehicles with ASC>.

Q. Is the diagnosis code set to the any of the above?

Set to the ABS-ECU. : Troubleshoot the ABS. Refer to GROUP 35B - Troubleshooting

.

Set to the ASC-ECU. : Troubleshoot the ASC. Refer to GROUP 35C - Troubleshooting

.

The diagnosis code is not set.

: Go to Step 4.

STEP 4. M.U.T.-III other system data list

Check the vehicle speed signal data list of ABS <vehicles with ABS> or ASC <vehicles with ASC> system.
Item No.88: Vehicle speed (Refer to GROUP 35B, Data list reference table

or refer to GROUP 35C, Data list reference table

Q. Is the check result normal?

Go to Step 5.

Diagnose ABS <vehicles with ABS> or ASC <vehicles with ASC> system. (Refer to GROUP 35B, Troubleshooting

or refer to GROUP 35C, Troubleshooting

.) After diagnosing the ABS <vehicles with ABS> or ASC <vehicles with ASC> system.

STEP 5. 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 6.

Replace combination meter, then go to Step 7.

STEP 6. M.U.T.-III Special Function

Item 4: Pointer (Refer to ).

Q. Is the check result normal?

Go to Step 7.

Replace the combination meter, and then go to Step 7.

STEP 7. 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.