FixVault

DTC C1252/52 Brake Booster Pump Motor on Time Abnormally Long: Description

The motor relay (semiconductor relay) is built into the master cylinder solenoid and drives the pump motor based on a signal from the skid control ECU.

DTC DETECTION CONDITION AND TROUBLE AREA

DTC Code DTC Detection Condition Trouble Area
C1252/52 The motor operates for 3 minutes or more.
  • Hydraulic brake booster pump motor
  • Hydraulic brake booster pump motor circuit
  • Accumulator pressure sensor

HINT:

The pump motor continues operation for the first 3 minutes, then repeats start and stop.