POWER ASSISTED SYSTEM (POWER STEERING) (DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)

DTC 41 VEHICLE SPEED IS ABNORMAL

TROUBLE SYMPTOM:

The steering wheel operation feels heavy.

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1.CHECK DTC.

Read all DTCs using the Subaru Select Monitor.

Are VDC CM or vehicle speed-related DTCs detected?

Perform the diagnosis according to DTC.

2.CHECK LAN SYSTEM.

Perform the diagnosis for LAN system using the Subaru Select Monitor.

Is a DTC of the body integrated unit displayed?

Perform the diagnosis according to DTC.

3.CHECK VEHICLE SPEED SIGNAL.

1) Use the Subaru Select Monitor, display the current data [Vehicle Speed] of the power steering control module.

2) Lift up the vehicle (so that the wheels turn freely), start the engine, and raise engine speed in gear.

CAUTION:

Be careful that no one is near the spinning tires and nothing gets caught in them.

3) Check for whether the data changes according to vehicle speed.

Is the data in sync with the vehicle speed?

A temporary communication failure may be a possible cause. Clear the memory.

Replace the power steering control module.