Code No. C1630: Steering Wheel Sensor Timeout <ASC>


caution
  • If there is any problem in the CAN bus lines, an incorrect diagnosis code may be set. Prior to this diagnosis, diagnose the CAN bus lines.
  • Whenever the ECU is replaced, ensure that the CAN bus lines are normal.
  • When the steering wheel sensor is replaced, calibrate the steering wheel sensor (Refer to GROUP 35C - On-vehicle Service ), and reset the steering wheel sensor correction amount stored in the 4WD-ECU. (Item No. 1: SAS adjusted value ).

OPERATION



DIAGNOSIS CODE SET CONDITION




  • The CAN signal of the steering wheel sensor cannot be received.

PROBABLE CAUSES



  • Malfunction of the CAN bus line
  • Damaged connectors (steering wheel sensor)
  • Malfunction of the steering wheel sensor
  • Malfunction of 4WD-ECU

DIAGNOSIS PROCEDURE

STEP 1. M.U.T.-III CAN bus diagnostics.
Use M.U.T.-III to perform the CAN bus diagnosis.

Q. Is the check result normal?
Go to Step 2.
Repair the CAN bus lines (Refer to GROUP 54C - Troubleshooting ).

STEP 2. M.U.T.-III data list.
Check the following data list (Refer to ).

  • Item No.8: Steering angle sensor

Q. Is the check result normal?
Intermittent malfunction (Refer to GROUP 00 - How to Cope with Intermittent Malfunction ).
Replace the steering wheel sensor (Refer to GROUP 35C - Steering Wheel Sensor ). Then go to Step 3.

STEP 3. Check whether the diagnosis code is reset.

Q. Is diagnosis code No.C1630 set?
Replace the 4WD-ECU.(Refer to ). Then go to Step 4.
Intermittent malfunction. (Refer to GROUP 00 - How to Cope with Intermittent Malfunction ).

STEP 4. Check whether the diagnosis code is reset.

Q. Is diagnosis code No.C1630 set?
Return to Step 1.
This diagnosis is complete.