Inspection Procedure 14: The Bending Lamps do not Illuminate or Go out Normally.


caution Before replacing the ECU, ensure that the power supply circuit, the earth circuit and the communication circuit are normal.

COMMENTS ON TROUBLE SYMPTOM



PROBABLE CAUSES



  • Malfunction of the AFS-ECU
  • Malfunction of the AFS control switch
  • Damaged harness wires and connectors

DIAGNOSIS PROCEDURE


STEP 1. M.U.T.-III diagnosis code



Q. Is the diagnosis code set?





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



Q. Is the diagnosis code set?





STEP 3. AFS control switch operation check



Q. Is the check result normal?





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




  • Turn the ignition switch to the ON position.
Item No.
 Item name
 Normal condition
Item 8
 IG SW (CAN input)
 ON

  • Press the AFS control switch.
Item No.
 Item name
 Normal condition
Item 1
 AFS OFF SW
 While the switch is pressed, "ON" is displayed.

  • Move the shift lever <M/T and TC-SST> or the selector lever <A/T and CVT> to the position other than the reverse position.
Item No.
 Item name
 Normal condition
Item 10
 Reverse gear (CAN input) <M/T>
 ON: Reverse position
OFF: Other than reverse position
Item 16
 Lever position (CAN input) <A/T, CVT or TC-SST>
 R: Reverse position
P, N, D: Other than reverse position

  • Illuminate the headlamps.
Item No.
 Item name
 Normal condition
Item 14
 Headlamp LO (CAN input)
 ON

  • Perform a test run of the vehicle.
Item No.
 Item name
 Normal condition
Item 4
 Vehicle speed (CAN input)
 Speedometer displayed value and M.U.T.-III displayed value agree with each other.

  • Turn the steering wheel.
Item No.
 Item name
 Normal condition
Item 5
 Steering angle (CAN input)
 The display on M.U.T.-III changes together with the steering wheel operation.
Item 7
 SAS status (CAN input)
 Normal
OK: Normal condition is displayed.

Q. Is the check result normal?





STEP 5. Retest the system



Q. Is the check result normal?