BCM-0057

BCM-0057 Power Supply, Voltage Too Low
Condition





Diagnostic Trouble Code (DTC) BCM-0057 is stored if the Brake Control Module (BCM) registers that the battery voltage is less than 9.5 Volts and the speed of the quickest rotating wheel is over 20 km/h. The Diagnostic Trouble Code (DTC) can be diagnosed when the speed is above 20 km/h and too low voltage has been detected for longer than approximately 0.5 ms.

Substitute value
- The ABS is blocked
- Electronic Brake force Distribution is blocked if the voltage is below 8 Volts
- Traction control is blocked
- Stability control is blocked
- Active yaw control is blocked
- Brake assistance is blocked.

Hint: For information about brake system abbreviations, Refer to Description and Operation.

Possible Sources
- Contact resistance in the terminals
- Battery voltage too low
- Fault in the charging system
- Open-circuit or short-circuit to ground in the cable for the power supply
- Defective fuse in the circuit
- Interference in the wiring
- Defective control module.

Fault symptom[s]
- General warning lamp lit
- The ABS warning lamp is lit
- The warning lamp for brake circuit not functioning 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.