Diagnostic trouble code (DTC) information ECM-930B

Condition 

Fig 1: Identifying Steering Wheel Control Module

Courtesy of VOLVO CARS OF NORTH AMERICA.

The diagnostic trouble code (DTC) is stored if the engine control module (ECM) registers a fault in the steering wheel module (SWM) or in its CAN communication.

The diagnostic trouble code (DTC) can be diagnosed when the ignition is switched on.

Substitute Value 

• Cruise control switched off.

Possible Source 

• Fault trace the steering wheel module (SWM)
• Fault trace the central electronic module (CEM).

Fault symptom[s] 

• Cruise control does not function at all.