Checking the wiring and sensor

Fig 1: Identifying Ignition OFF

Courtesy of VOLVO CARS OF NORTH AMERICA.

• Ignition off.

  Check that the control unit for the steering wheel angle sensor (SAS) and the steering wheel angle sensor itself as well as the communication wires between the control unit and the steering wheel angle sensor are not in close proximity to sources of interference such as electric motors, mobile telephones and mobile telephone wires etc.

  Check the connectors and sensors for damage.

  Do the necessary corrective action.

  Additional information: 

  • To connect the test box, see Connecting the ABS breakout box .
  • To replace the steering wheel angle sensor, see Contact reel/steering wheel angle sensor, replacing .
  • For information on signals, see Signal specification, ABS/DSTC (dynamic stability and traction control) control module .
  Fig 2: Identifying Ohmmeter

  Courtesy of VOLVO CARS OF NORTH AMERICA.
  Fig 3: Control Module For Steering Wheel Angle Sensor

  Courtesy of VOLVO CARS OF NORTH AMERICA.

Is there a fault? 

• YES 

  Refer to Verification 

• NO 

  FAULT NOT FOUND:  Troubleshooting has been completed.