CAN COMMUNICATION SYSTEM > Skid Control ECU Communication Stop Mode

for Preparation Click here


DESCRIPTION


Detection Item
Symptom
Trouble Area
Skid Control ECU Communication Stop Mode
Either condition is met:
  1. "Skid Control (ABS/VSC/TRAC)" is not displayed on the "Bus Check" screen.
  2. "Skid Control ECU Communication Stop Mode" in "DTC Combination Table" applies.
  1. Power source or inside skid control ECU with actuator
  2. Skid control ECU with actuator branch wire or connector
  3. Skid control ECU with actuator

WIRING DIAGRAM


C158946E22


INSPECTION PROCEDURE

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

NOTICE:
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 main wire and the branch wire.

    CAUTION:
    Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to prevent airbag and seat belt pretensioner activation.

NEXT


3.CHECK FOR OPEN IN CAN BUS WIRE (SKID CONTROL ECU WITH ACTUATOR BRANCH WIRE)


    C240487E06
  1. Disconnect the A17 skid control ECU with actuator connector.

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

    Standard resistance:
    Tester Connection
    Switch Condition
    Specified Condition
    A17-12 (CANH) - A17-13 (CANL)
    Ignition switch OFF
    54 to 69 Ω


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


4.CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU WITH ACTUATOR - BATTERY AND BODY GROUND)
  1. Reconnect the cable to the negative (-) battery terminal before measuring the resistances of the main wire and the branch wire.



    C240487E07
  1. Measure the resistance according to the value(s) in the table below.

    Standard resistance:
    Tester Connection
    Condition
    Specified Condition
    A17-16 (GND1) - Body ground
    Always
    Below 1 Ω
  1. Measure the voltage according to the value(s) in the table below.

    Standard voltage:
    Tester Connection
    Switch Condition
    Specified Condition
    A17-1 (+BM) - Body ground
    Always
    11 to 14 V
    A17-32 (+BS) - Body ground
    Always
    11 to 14 V
    A17-8 (IG1) - Body ground
    Ignition switch ON
    11 to 14 V


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

REPLACE SKID CONTROL ECU WITH ACTUATOR (Click here)