CAN COMMUNICATION SYSTEM Skid Control ECU Communication Stop Mode

DESCRIPTION

Detection Item Symptom Trouble Area
Skid Control ECU Communication Stop Mode

  • "ABS/VSC/TRC" is not displayed on the "Communication Bus Check" screen of the intelligent tester

  • Applies to "Skid Control ECU Communication Stop Mode" in the "DTC COMBINATION TABLE"

  • Power source circuit of the skid control ECU

  • Skid control ECU branch line or connector

  • Skid control ECU

Tech Tips

"ABS/VSC/TRC" refers to the circuit that includes the skid control ECU.

WIRING DIAGRAM

A01622ME02
A01625YE02

INSPECTION PROCEDURE

Note


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

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

  • 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 the doors. If any doors need to be opened in order to check connectors, open the doors and leave them open.

Tech Tips

Operating the engine switch, any switches, or any doors triggers related ECU and sensor communication with the CAN. This communication will cause the resistance value to change.

PROCEDURE


  1. CHECK DTC OUTPUT


    1. Connect the intelligent tester the DLC3.

    2. Turn the engine switch on (IG).

    3. Turn the intelligent tester on.

    4. Enter the following menus: Chassis / ABS/VSC/TRC / DTC.

    5. Check for DTCs.

      OK
      DTC C1241 is not output.

    NG

    GO TO DTC CHART

    OK

  2. CHECK FOR OPEN IN CAN BUS WIRE (SKID CONTROL ECU BRANCH WIRE)


    1. Turn the engine switch off.

    2. A015ZEEE07

      Disconnect the brake actuator assembly (skid control ECU) connector (A62).

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

      Standard Resistance
      Tester Connection Switch Condition Specified Value
      A62-25 (CANH) - A62-14 (CANL) Engine switch off 54 to 69 Ω

    NG

    REPAIR OR REPLACE SKID CONTROL ECU BRANCH WIRE OR CONNECTOR (CANH, CANL)

    OK

    REPLACE BRAKE ACTUATOR ASSEMBLY (SKID CONTROL ECU) Click here