INSPECTION PROCEDURE 6: Speedometer does not Work (other meters work). INSPECTION PROCEDURE 7: The Fuel Gauge Needle Moves Excessively.
caution When the battery cable is disconnected or the combination meter is removed, the fuel gauge learned value will be erased. To let the display unit re-learn it, enter the vehicle speed (by driving the vehicle or entering simulated vehicle speed) and then stop the vehicle.

COMMENTS ON TROUBLE SYMPTOM
If only the speedometer does not operate, the engine-ECU <M/T> or engine-A/T-ECU <A/T> system, the combination meter, the wiring harness or its connector may be defective. Furthermore, incorrect level of fuel is shown on the gauge, because the display unit can not learn the fuel gauge.

POSSIBLE CAUSES

  • Damaged harness wires and connectors
  • Malfunction of engine-ECU <M/T> or engine-A/T-ECU <A/T>
  • Malfunction of combination meter

DIAGNOSTIC 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 54F, Diagnosis - Can Bus Diagnostic Table ). After diagnosing the CAN bus lines, go to Step 5.

Step 2. M.U.T.-III diagnosis code
Check whether the MPI system-related diagnosis code is set.

Q. Is the diagnosis code set?
Diagnose MPI system. (Refer to GROUP 13A, Troubleshooting or GROUP 13B, Troubleshooting .) After diagnosing the MPI system, go to Step 5.
Go to Step 3.

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

  • Item No.82: Vehicle speed sensor malfunction flag (Refer to .)
  • Item No.83: Vehicle speed sensor definite flag (Refer to .)
  • Item No.84: Vehicle stopped flag (Refer to .)

Q. Is the check result satisfactory?
Go to Step 4.
Diagnose MPI system. (Refer to GROUP 13A, Troubleshooting or GROUP 13B, Troubleshooting .) After diagnosing the MPI system, go to Step 5.

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.
OK: The speedometer shows that simulated vehicle speed.

Q. Is the check result satisfactory?
Go to Step 5.
Replace combination meter, then go to Step 5.

Step 5. Retest the system.
Check that the speedometer works normally.

Q. Is the check result satisfactory?
The procedure is complete.
Go to Step 1.