Code No. C1630: Steering wheel sensor timeout

caution

If there is any problem in the CAN bus lines, an incorrect diagnosis code may be stored. 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

4WD-ECU communicates with the steering wheel sensor via the CAN bus lines.

DIAGNOSIS CODE SET CONDITION

No signals are received from the steering wheel sensor.

PROBABLE CAUSES

Malfunction of the CAN bus line
Damaged steering wheel sensor connectors
Malfunction of the steering wheel sensor
Malfunction of the 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 stored again.

Q. Is diagnosis code No.C1630 stored?

	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 stored again.

Q. Is diagnosis code No.C1630 stored?

	Return to Step 1.

	This diagnosis is complete.