ELECTRONICALLY CONTROLLED BRAKE SYSTEM, Diagnostic DTC:C1381/97

DTC Code DTC Name
C1381/97 Acceleration Sensor Power Supply Voltage Malfunction

DESCRIPTION

This DTC is stored when the skid control ECU assembly receives a sensor supply voltage malfunction signal from the yaw rate and acceleration sensor.

DTC No. Detection Item INF Code DTC Detection Condition Trouble Area Note
C1381/97 Acceleration Sensor Power Supply Voltage Malfunction 315 At a vehicle speed of 3 km/h (2 mph) or more, a supply voltage malfunction signal is received from the sensor for 10 seconds or more.

  • Improperly connected connector, deformation or corrosion of terminals

  • Acceleration sensor (Yaw rate and acceleration sensor) power supply

  • Skid control ECU assembly

 ABS DTC

WIRING DIAGRAM

A00215SE03

CAUTION / NOTICE / HINT

Note


  • When replacing the yaw rate and acceleration sensor, perform initialization and calibration of the linear solenoid valve.

    Click here

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

PROCEDURE


  1. CHECK HARNESS AND CONNECTOR (IG TERMINAL)


    1. A00212IC18
      *a

      Front view of wire harness connector

      (to Yaw Rate and Acceleration Sensor)

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

    2. Disconnect the K85 yaw rate and acceleration sensor connector.

    3. Turn the power switch on (IG).

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      K85-4 (IG) - Body ground Power switch on (IG) 11 to 14 V
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR (IG CIRCUIT)

    OK

  2. CHECK HARNESS AND CONNECTOR (GND TERMINAL)


    1. A0020GYC01
      *a

      Front view of wire harness connector

      (to Yaw Rate and Acceleration Sensor)

      Turn the power switch off.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      K85-1 (GND) - Body ground Always Below 1 Ω
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR (GND CIRCUIT)

    OK

  3. RECONFIRM DTC


    1. Reconnect the K85 yaw rate and acceleration sensor connector.

    2. Clear the DTCs.

      Click here


      Chassis > ABS/VSC/TRC > Clear DTCs

    3. Turn the power switch on (READY).

    4. Perform a road test.

    5. Check if the same DTC is output.

      Click here


      Chassis > ABS/VSC/TRC > Trouble Codes
      Result
      Result Proceed to
      DTC C1381/97 is not output. A
      DTC C1381/97 is output. B

      Note

      Check the yaw rate and acceleration sensor signal after replacement.

      Click here

      Tech Tips

      If troubleshooting has been carried out according to Problem Symptoms Table, refer back to the table and proceed to the next step.

      Click here


    A

    USE SIMULATION METHOD TO CHECK Click here

    B

    REPLACE YAW RATE AND ACCELERATION SENSOR Click here