Checking diagnostic trouble codes (DTCs)

Fig 1: Identifying Ignition Switch ON Position

Courtesy of VOLVO CARS OF NORTH AMERICA.

• Ignition off
• Check the connectors for the brake control module (BCM) and the active yaw control sensor. Check for contact resistance and oxidation
• Ignition on
• Wait approximately 60 seconds
• Read off the status of the diagnostic trouble code (DTC).

  If the status of the diagnostic trouble code (DTC) is intermittent, the cause of the fault was probably contact resistance or oxidation in the connectors for the control module or the active yaw control sensor.

  Other information 

  • To disconnect the connector for the active yaw control sensor, see ACTIVE YAW CONTROL SENSOR, REPLACING
  • See Contents .
  Fig 2: Identifying VCT2000 Diagnostic Tool

  Courtesy of VOLVO CARS OF NORTH AMERICA.

Is the status of the diagnostic trouble code (DTC) permanent? 

• YES 

  Refer to Checking the wiring 

• NO 

  OKAY:  Troubleshooting has been completed.

Fig 1: Identifying Ignition Switch ON Position

Courtesy of VOLVO CARS OF NORTH AMERICA.

Fig 2: Identifying Connector(s) Reinstallation

Courtesy of VOLVO CARS OF NORTH AMERICA.

• Ignition off
• Reconnect the components, connectors etc.
• Test drive the car. See Test Drive Form (DSTC (dynamic stability and traction control) /brake control module), description
• Ignition on
• Read off diagnostic trouble codes (DTCs).

  The brake control module (BCM) is faulty if the status of the diagnostic trouble code (DTC) is still permanent.

  Install the old active yaw control sensor and replace the control module

  Other information 

  • To replace the control module, see Brake Control Module (BCM), replacing .

Is the status of the diagnostic trouble code (DTC) permanent? 

• YES 

  OKAY:  Troubleshooting has been completed.

• NO 

  Refer to Information