VEHICLE STABILITY CONTROL SYSTEM, Diagnostic DTC:C1428

DTC Code DTC Name
C1428 Motor Circuit Malfunction

DESCRIPTION

DTC No. Detection Item DTC Detection Condition Trouble Area
C1428 Motor Circuit Malfunction With the ABS motor relay off and the ABS motor fail-safe relay on, an open in the pump motor circuit continues for 2 seconds or more. Skid control ECU (brake actuator assembly)

WIRING DIAGRAM

Refer to DTCs C1361, C146C and C146D.

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CAUTION / NOTICE / HINT

Note

When replacing the pump motor (brake actuator assembly), perform zero point calibration and store system information.

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PROCEDURE


  1. CHECK HARNESS AND CONNECTOR (GND2 TERMINAL)


    1. A01XQHHC01
      *a

      Front view of wire harness connector

      (to Skid Control ECU (Brake Actuator Assembly))

      Make sure that there is no looseness at the locking part and the connecting part of the connectors.

    2. Disconnect the A9 skid control ECU (brake actuator assembly) connector.

    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition
      A9-13 (GND2) - Body ground Always Below 1 Ω
      Result
      Result Proceed to
      OK (for LHD) A
      OK (for RHD) B
      NG C

    A

    REPLACE BRAKE ACTUATOR ASSEMBLY for LHD: Click here

    B

    REPLACE BRAKE ACTUATOR ASSEMBLY for RHD: Click here

    C

    REPAIR OR REPLACE HARNESS OR CONNECTOR (GND2 CIRCUIT)