CAN COMMUNICATION SYSTEM Yaw Rate Sensor Communication Stop Mode

DESCRIPTION

Detection Item Symptom Trouble Area
Yaw Rate Sensor Communication Stop Mode

  • "Yaw Rate / Decelerate Sensor" is not displayed on "Communication Bus Check" screen of the intelligent tester.

  • Applies to Yaw Rate Sensor Communication Stop Mode in DTC Combination Table.

  • Power source circuit of the yaw rate and acceleration sensor

  • Yaw rate and acceleration sensor branch wire or connector

  • Yaw rate and acceleration sensor

WIRING DIAGRAM

A01CBMIE03
A01CCL1E01

INSPECTION PROCEDURE

Note


  • Turn the engine switch off before measuring the resistances of the CAN main wires and the CAN branch wires.

  • After the engine switch is turned off, check that the key reminder warning system and light reminder warning system are not in operation.

  • Before measuring the resistance, leave the vehicle as is for at least 1 minute and do not operate the engine switch, any other switches or doors. If any doors need to be opened in order to check the connectors, open the doors and leave them open.

Tech Tips


  • Operating the engine switch, any other switches or a door triggers related ECU and sensor communication on the CAN. This communication will cause the resistance value to change.

  • Even after DTCs are cleared, if a DTC is stored again after driving the vehicle for a while, the malfunction may be occurring due to vibration of the vehicle. In such a case, wiggling the ECUs or wire harness while performing the inspection below will help determine the cause of the malfunction.

PROCEDURE


  1. CHECK CAN BUS WIRE FOR DISCONNECTION (YAW RATE AND ACCELERATION SENSOR BRANCH WIRE)


    1. A01CBZBE01

      Turn the engine switch off.

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

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      M12-2 (CANH) - M12-3 (CANL) Engine switch off 54 to 69 Ω

    NG

    REPAIR OR REPLACE CAN BUS BRANCH WIRE OR CONNECTOR (YAW RATE AND ACCELERATION SENSOR BRANCH WIRE)

    OK

  2. CHECK HARNESS AND CONNECTOR (POWER SOURCE TERMINAL)


    1. A01CBZBE02

      Turn the engine switch on (IG).

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      M12-1 (IGA) - Body ground Engine switch on (IG) 11 to 14 V

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR (POWER SOURCE CIRCUIT)

    OK

  3. CHECK HARNESS AND CONNECTOR (GROUND TERMINAL)


    1. A01CBZBE03

      Turn the engine switch off.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      M12-4 (GNDA) - Body ground Always Below 1 Ω

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR (GROUND CIRCUIT)

    OK

    REPLACE YAW RATE AND ACCELERATION SENSOR Click here