BCM-0074

BCM-0074 Hydraulic Valves, Faulty Signal
Condition





The Brake Control Module (BCM) can register Diagnostic Trouble Code (DTC) BCM-0074 for a number of different fault causes. Diagnostic Trouble Code (DTC) BCM-0074 is stored:
- if there is a short-circuit to ground or open-circuit in the control module inlet or outlet valve circuits
- if the control module is subject to interference so that its calculations are incorrect
- if the control module registers a fault in its internal inlet and outlet valve circuits
- if there is a short-circuit to ground, short-circuit to supply voltage or an open-circuit in the inlet valve in the anti-spin circuit
- if the control module registers an open-circuit or short-circuit in one of its internal circuits.

Substitute value
- The ABS is blocked
- Traction control is blocked
- Stability control is blocked
- Active yaw control is blocked
- Electronic Brake force Distribution is blocked
- Brake assistance is blocked.

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

Possible source
- Internal fault in the control module.

Fault symptom[s]
- 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.