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 ).

STEP 2. 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 <6B1> or GROUP 13C - Troubleshooting <4N1>). Complete the engine troubleshooting, and then 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 engine-ECU.
Item No.4: Vehicle speed signal (Refer to GROUP 13A - Data list reference table <4G6>, GROUP 13B - Data list reference table <6B1> or GROUP 13C - Data list reference table <4N1>).

Q. Is the check result normal?
Go to Step 4.
Troubleshoot the engine (Refer to GROUP 13A - Troubleshooting <4G6>, GROUP 13B - Troubleshooting <6B1> or GROUP 13C - Troubleshooting <4N1>). Complete the engine troubleshooting.

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 (Refer to ), 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 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.