CAN COMMUNICATION SYSTEM Steering Angle Sensor Communication Stop Mode

DESCRIPTION

Detection Item Symptom Trouble Area
Steering Angle Sensor Communication Stop Mode

Either condition is met:


  • "Spiral cable (Steering Angle Sensor)" is not displayed on "Bus Check".

  • "Steering Angle Sensor Communication Stop Mode" in "DTC Combination Table" applies.

  • Power source or inside spiral with sensor cable sub-assembly (steering angle sensor)

  • Spiral with sensor cable sub-assembly (steering angle sensor) CAN branch wire or connector

  • Spiral with sensor cable sub-assembly (steering angle sensor)

  • Engine stop and start ECU*

WIRING DIAGRAM

A01IU44E02

INSPECTION PROCEDURE

Note

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

Tech Tips

Operating the ignition switch, any switches or any doors triggers related ECU and sensor communication with the CAN, which causes resistance variation.

PROCEDURE


  1. PRECAUTION

    Note

    After turning the ignition switch off, waiting time may be required before disconnecting the cable from the battery terminal. Therefore, make sure to read the disconnecting the cable from the battery terminal notice before proceeding with work Click here.


    NEXT

  2. DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL


    1. Disconnect the cable from the negative (-) battery terminal before measuring the resistances of the CAN main wire and CAN branch wire.

      CAUTION:

      Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system.

      Note

      When disconnecting the cable, some systems need to be initialized after the cable is reconnected Click here.


    NEXT

  3. CHECK FOR OPEN IN CAN BUS WIRE (STEERING ANGLE SENSOR CAN BRANCH WIRE)


    1. A01IPSCE40
      Text in Illustration
      *a

      Rear view of wire harness connector

      (to Spiral with Sensor Cable Sub-assembly [Steering Angle Sensor])

      Disconnect the spiral with sensor cable sub-assembly (steering angle sensor) connector.

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      H128-4 (CANH) - H128-3 (CANL) Ignition switch off 54 to 69 Ω

    NG

    REPAIR OR REPLACE STEERING ANGLE SENSOR CAN BRANCH WIRE OR CONNECTOR (CANH, CANL)

    OK

  4. CHECK HARNESS AND CONNECTOR (STEERING ANGLE SENSOR - BATTERY AND BODY GROUND)


    1. A01IPSCE41
      Text in Illustration
      *a

      Rear view of wire harness connector

      (to Spiral with Sensor Cable Sub-assembly [Steering Angle Sensor])

      Connect the cable to the negative (-) battery terminal.

      Note

      When disconnecting the cable, some systems need to be initialized after the cable is reconnected Click here.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      H128-2 (ESS) - Body ground Always Below 1 Ω

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      H128-6 (BAT) - Body ground Always 11 to 14 V

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  5. CHECK HARNESS AND CONNECTOR (STEERING ANGLE SENSOR - BATTERY)


    1. A01IPSCE42
      Text in Illustration
      *a

      Rear view of wire harness connector

      (to Spiral with Sensor Cable Sub-assembly [Steering Angle Sensor])

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      H128-5 (IG) - Body ground Ignition switch ON 11 to 14 V
      Result
      Result Proceed to
      OK A
      NG (w/o Stop and Start System) B
      NG (w/ Stop and Start System) C

    B

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    C

    CHECK HARNESS AND CONNECTOR (STEERING ANGLE SENSOR - ENGINE STOP AND START ECU) Click here

    A

    REPLACE SPIRAL WITH SENSOR CABLE SUB-ASSEMBLY (STEERING ANGLE SENSOR) Click here

  6. CHECK HARNESS AND CONNECTOR (STEERING ANGLE SENSOR - ENGINE STOP AND START ECU)


    1. Disconnect the H121 engine stop and start ECU connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      H128-5 (IG) - H121-12 (IGO1) Always Below 1 Ω
      H128-5 (IG) or H121-12 (IGO1) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    REPLACE ENGINE STOP AND START ECU Click here