Diagnostic Trouble Code (DTC) Information

Condition 

Fig 1: Identifying Brake Control Module (BCM) & Engine Control Module (ECM)

Courtesy of VOLVO CARS CORPORATION

The engine control module (ECM) transmits a signal via the Control area network (CAN) which indicates whether the engine speed signal to the brake control module (BCM) is correct or not. The brake control module (BCM) uses the engine speed (RPM) signal during control of the stability function.

Diagnostic trouble code (DTC) BCM-0101 is stored if the brake control module (BCM) registers that the engine control module (ECM) has transmitted a signal indicating that the engine speed (RPM) signal is implausible.

The diagnostic trouble code (DTC) can be diagnosed after the engine has been started.

Substitute Value 

• Traction control is blocked
• Stability control is blocked
• Active yaw control is blocked.

HINT: For information about abbreviations, see  BRAKE SYSTEM, ABBREVIATIONS  . 

Possible Source 

• Fault in the engine management system.

Fault symptom[s] 

• The anti-spin warning lamp is lit (up to and including 2002 model year)
• General yellow warning lamp lit (from model year 2003 inclusive)
• Anti-spin does not function
• The stability control system does not function
• The traction control system does not function.