C1256

DTC C1256/57 Accumulator Low Pressure

DESCRIPTION
The accumulator pressure sensor is built into the actuator and detects the accumulator pressure. The skid control ECU turns on the brake control warning light and sounds the skid control buzzer if it senses a decrease in the accumulator pressure.

DTC Detection Condition:

WIRING DIAGRAM
Refer to DTCs:
C1252/52 [1][2]C Code Charts
C1253/53 C1253

NOTICE: When replacing the skid control ECU or brake actuator assembly, perform initialization of linear solenoid valve and calibration. Programming and Relearning

HINT:
^ When C1241/41, C1252/52 or C1253/53 are output together with C1256/57, inspect and repair the trouble areas indicated by C1241/41, C1252/52 or C1253/53 first.
^ DTCs may be output if the accumulator pressure drops due to frequent braking (this is not a malfunction).

INSPECTION PROCEDURE

Step 1:

Steps 1-3: