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 (GASOLINE (NOT CNG/LPG) M56 AND M58) or ACTIVE YAW CONTROL SENSOR, REPLACING (B5254T4 M66AWD)
- 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?

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?