Diagnostic trouble code (DTC) information

Condition 

Fig 1: Identifying Brake Pump Motor

Courtesy of VOLVO CARS OF NORTH AMERICA.

Diagnostic trouble code (DTC) BCM-0070 is stored if the brake control module (BCM) detects that the voltage to the pump motor is incorrect.

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

Substitute Value 

• The ABS is blocked
• Traction control is blocked
• Stability control is blocked
• Active yaw control is blocked
• Brake assistance is blocked.

HINT: For information about brake system abbreviations, see  Brake system, abbreviations  . 

Possible Source 

• Contact resistance in the terminals
• The fuse for the pump motor is defective
• Open-circuit in the power supply to the pump motor
• Open-circuit in the ground lead for the pump motor
• Open-circuit in the power supply (30-supply) to the control module for the pump motor
• Defective pump motor
• Defective control module.

Fault symptom[s] 

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