Subaru Crosstrek Service Manual: Dtc u0428 invalid data received from steering angle sensor module

DTC DETECTING CONDITION:

Defective data was transmitted from steering angle sensor.

TROUBLE SYMPTOM:

VDC CM does not operate normally.

1.CHECK PERFORMING OF BASIC DIAGNOSTIC PROCEDURE.

Was the basic diagnostic procedure performed up to STEP 3?

Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC U0428 INVALID DATA RECEIVED FROM STEERING ANGLE SENSOR MODULE">Go to Step 2.

Perform the basic diagnostic procedure. Basic Diagnostic Procedure">

2.CHECK DTC.

Check the displayed DTC.

Are DTCs other than U*** displayed?

Perform the diagnosis according to DTC.

Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC U0428 INVALID DATA RECEIVED FROM STEERING ANGLE SENSOR MODULE">Go to Step 3.

3.CHECK DTC.

Check the displayed DTC.

Is DTC for the bus off or the data no-receive displayed?

Perform the diagnosis according to DTC.

Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC U0428 INVALID DATA RECEIVED FROM STEERING ANGLE SENSOR MODULE">Go to Step 4.

4.CHECK DTC.

Check the displayed DTC.

Is U0428 a current malfunction?

Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC U0428 INVALID DATA RECEIVED FROM STEERING ANGLE SENSOR MODULE">Go to Step 5.

Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC U0428 INVALID DATA RECEIVED FROM STEERING ANGLE SENSOR MODULE">Go to Step 9.

5.CHECK DTC.

1) Turn the ignition switch to OFF.

2) Disconnect the steering angle sensor connector.

3) Connect the disconnected connectors.

4) Read the DTC using Subaru Select Monitor. Read Diagnostic Trouble Code (DTC)">

Is U0428 a current malfunction?

Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC U0428 INVALID DATA RECEIVED FROM STEERING ANGLE SENSOR MODULE">Go to Step 6.

Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC U0428 INVALID DATA RECEIVED FROM STEERING ANGLE SENSOR MODULE">Go to Step 9.

6.CHECK DTC.

Using the Subaru Select Monitor, read DTC of all the systems. Read Diagnostic Trouble Code (DTC)">

Is the steering angle sensor data abnormal detected in several modules?

Replace the steering angle sensor. Steering Angle Sensor">

Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC U0428 INVALID DATA RECEIVED FROM STEERING ANGLE SENSOR MODULE">Go to Step 7.

7.REPLACE MODULE.

1) Replace the steering angle sensor.

2) Read the DTC using Subaru Select Monitor. Read Diagnostic Trouble Code (DTC)">

Is U0428 a current malfunction?

Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC U0428 INVALID DATA RECEIVED FROM STEERING ANGLE SENSOR MODULE">Go to Step 8.

System is normal.

8.CHECK MODULE.

1) Reinstall the steering angle sensor.

2) Replace the module that the DTC has been detected.

3) Read the DTC using Subaru Select Monitor. Read Diagnostic Trouble Code (DTC)">

Is U0428 a current malfunction?

Replace the steering angle sensor. Steering Angle Sensor">

System is normal.

9.CHECK HARNESS.

1) Shake the harness, and check for poor contact.

2) Using the Subaru Select Monitor, read DTC of CAN system. Read Diagnostic Trouble Code (DTC)">

Is U0428 a current malfunction?

Repair the poor contact of harness, or replace the harness.

Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC U0428 INVALID DATA RECEIVED FROM STEERING ANGLE SENSOR MODULE">Go to Step 10.

10.CHECK CONNECTOR.

Check the connector used for high speed CAN for poor contact.

Is there poor contact of connector?

Repair the connector that has poor contact, or replace harness.

It is possible that temporary poor communication occurs. Delete the DTC.

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