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Home >> Volvo >> 2004 >> S80 Base, 2.5 59, AWD >> Repair and Diagnosis >> Steering >> Steering Control Systems >> Steering Wheel Module (SWM) & Steering Angle Sensor (SAS) Diagnostic Trouble Codes >> SAS-0021: Steering Wheel Angle Sensor Signal R1/R2/R3/R4. Signal Faulty (1999-2004) >> Faulty signal >> Checking the signal

Checking the signal

HINT: The control module for the steering wheel angle sensor has been unable to determine whether the fault is active or not. Therefore a test routine will be run. 

Fig 1: Identifying Ignition ON
GLL101051Courtesy of VOLVO CARS OF NORTH AMERICA.