Honda Civic manuals

Subaru Legacy BN/BS (2015-2019) Service Manual: Dtc u0452 invalid data received from restraints control module

DTC DETECTING CONDITION:

Defective data was transmitted from steering angle sensor.

TROUBLE SYMPTOM:

VDC CM does not operate normally.

STEPCHECKYESNO

1.CHECK PERFORMING OF BASIC DIAGNOSTIC PROCEDURE.

Was the basic diagnostic procedure performed up to STEP 8-

Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC U0452 INVALID DATA RECEIVED FROM RESTRAINTS CONTROL MODULE

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 U0452 INVALID DATA RECEIVED FROM RESTRAINTS CONTROL MODULE

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 U0452 INVALID DATA RECEIVED FROM RESTRAINTS CONTROL MODULE

4.CHECK DTC.

Check the displayed DTC.

Is U0452 a current malfunction-

Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC U0452 INVALID DATA RECEIVED FROM RESTRAINTS CONTROL MODULE

Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC U0452 INVALID DATA RECEIVED FROM RESTRAINTS CONTROL MODULE

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.

Is U0452 a current malfunction-

Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC U0452 INVALID DATA RECEIVED FROM RESTRAINTS CONTROL MODULE

Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC U0452 INVALID DATA RECEIVED FROM RESTRAINTS CONTROL MODULE

6.CHECK DTC.

Using the Subaru Select Monitor, read DTC of all the systems.

Is the airbag data abnormal detected in several modules-

Replace the airbag CM. Airbag Control Module

Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC U0452 INVALID DATA RECEIVED FROM RESTRAINTS CONTROL MODULE

7.REPLACE MODULE.

1) Replace the airbag CM. Airbag Control Module

2) Read the DTC using Subaru Select Monitor.

Is U0452 a current malfunction-

Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC U0452 INVALID DATA RECEIVED FROM RESTRAINTS CONTROL MODULE

System is normal.

8.CHECK MODULE.

1) Reinstall the airbag CM.

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

3) Read the DTC using Subaru Select Monitor.

Is U0452 a current malfunction-

Replace the airbag CM. Airbag Control Module

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.

Is U0452 a current malfunction-

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

Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC U0452 INVALID DATA RECEIVED FROM RESTRAINTS CONTROL MODULE

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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Other materials:

List
Item NameDescriptionStandardNote+POWER BPower supply voltage value9 — 16 V — + BPRG CM power supply voltage value9 — 16 V — IGN SWIgnition switch statusON: IGN ONOFF: IGN OFF — Memory stop SWMemorized height switch statusON: switch ONOFF switch OFF — D SWDriver’s seat switch status ...

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