ANTI-LOCK BRAKE SYSTEM, Diagnostic DTC:C1428

DTC Code DTC Name
C1428 Motor Circuit Malfunction

DESCRIPTION

DTC NO. DTC Detection Condition Trouble Area
C1428 With the ABS motor relay OFF and the ABS motor fail safe relay ON, an open in the motor circuit continues for 2 seconds or more. Brake actuator assembly (Skid control ECU)

WIRING DIAGRAM

Refer to DTCs C1427 Click here.

CAUTION / NOTICE / HINT

Note


  • When replacing the brake actuator assembly (skid control ECU) or deceleration sensor, be sure to perform deceleration sensor 0 point calibration and CVT oil pressure calibration after performing AT/CVT learned values initialization.

    for K310 Click here

    for K411 Click here

  • Inspect the fuses for circuits related to this system before performing the following inspection procedure.

  • Perform the test mode procedure after the initialization (perform the test mode start only after the brake actuator assembly (skid control ECU) is replaced).

    Tech Tips

    By performing the test mode start, the identification code of the brake actuator assembly (skid control ECU) is re-registered.

PROCEDURE


  1. CHECK HARNESS AND CONNECTOR (GND2)


    1. Turn the ignition switch off.

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

    3. A005LOKE01
      Text in Illustration
      *A except LHD with CVT
      *B for LHD with CVT
      *a

      Front view of wire harness connector

      (to Brake actuator assembly (Skid control ECU))

      Disconnect the A55 or A57 brake actuator assembly (skid control ECU) connector.

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

      Standard Resistance
      except LHD with CVT
      Tester Connection Condition Specified Condition
      A55-13 (GND2) - Body ground Always Below 1 Ω
      for LHD with CVT
      Tester Connection Condition Specified Condition
      A57-13 (GND2) - Body ground Always Below 1 Ω

    5. Reconnect the A55 or A57 brake actuator assembly (skid control ECU) connector.

      Result
      Result Proceed to
      NG A
      OK (for LHD) B
      OK (for RHD) C

    A

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    B

    REPLACE BRAKE ACTUATOR ASSEMBLY (SKID CONTROL ECU) Click here

    C

    REPLACE BRAKE ACTUATOR ASSEMBLY (SKID CONTROL ECU) Click here