CAN COMMUNICATION SYSTEM ABS and Traction Actuator (Skid Control ECU) Communication Stop Mode

DESCRIPTION

Detection Item Symptom Trouble Area
ABS and Traction Actuator (Skid Control ECU) Communication Stop Mode Applies to "ABS and Traction Actuator (Skid Control ECU) Communication Stop Mode" in "DTC combination table"

  • Power source circuit of ABS and traction actuator (skid control ECU)

  • ABS and traction actuator (skid control ECU) branch wire or connector

  • ABS and traction actuator (skid control ECU)

WIRING DIAGRAM

A013607E04

INSPECTION PROCEDURE

Note


  • Turn the ignition switch to OFF before measuring the resistances of the CAN main wire and the CAN branch wire.

  • After the ignition switch is turned to OFF, check that the light reminder warning system is not in operation.

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

    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. CHECK CAN BUS LINE DISCONNECTION (ABS AND TRACTION ACTUATOR (SKID CONTROL ECU) BRANCH WIRE)


    1. Turn the ignition switch to OFF.

      A01364GE01

    2. Disconnect the A41 ABS and traction actuator (skid control ECU) connector.

    3. Measure the resistance according to the resistance in the table below.

      Standard resistance
      Tester connection Switch Condition Specified Condition
      A41-35 (CANH) - A41-14 (CANL) ignition switch OFF 54 to 69 Ω

    NG

    REPAIR OR REPLACE CAN BRANCH WIRE CONNECTED TO ABS AND TRACTION ACTUATOR (SKID CONTROL ECU) (CAN-H, CAN-L)

    OK

  2. CHECK HARNESS AND CONNECTOR (IG1, GND1, GND2)


    1. Disconnect the A41 ABS and traction actuator (skid control ECU) connector.

      A01364GE03

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

      Standard resistance
      Tester Connection Switch Condition Specified Condition
      A41-1 (GND2) - Body ground Always Below 1 Ω
      A41-4 (GND1) - Body ground Always Below 1 Ω

    3. Measure the voltage according to the value in the table below.

      Standard voltage
      Tester Connection Condition Specified Condition
      A41-28 (IG1) - Body ground Ignition switch ON 11 to 14 V

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    REPLACE ABS AND TRACTION ACTUATOR (SKID CONTROL ECU)