Can Communication System (W/ Vsc) Skid Control Ecu Communication Stop Mode


DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL

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

CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU - BATTERY AND BODY GROUND)

CAN COMMUNICATION SYSTEM (w/ VSC) - Skid Control ECU Communication Stop Mode


DESCRIPTION


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

WIRING DIAGRAM


Toyota Fortuner. Ggn50, 60 Kun51, 61 Tgn51 Lan50.Can Communication.Can Communication System (W/ Vsc).Can Communication System (W/ Vsc) Skid Control Ecu Communication Stop Mode


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.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:
    For vehicles with SRS:
    Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system.
    NOTICE:
    When disconnecting the cable from the negative (-) battery terminal, some systems need to be initialized after the cable is reconnected (Toyota Fortuner RM000004W63000X.html).

NEXT


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


    Toyota Fortuner. Ggn50, 60 Kun51, 61 Tgn51 Lan50.Can Communication.Can Communication System (W/ Vsc).Can Communication System (W/ Vsc) Skid Control Ecu Communication Stop Mode

  1. Disconnect the S25 skid control ECU connector.

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

    Standard Resistance:
    Tester Connection
    		Switch Condition
    		Specified Condition
    S25-25 (CANH) - S25-14 (CANL)
    		Ignition switch off
    		54 to 69 Ω


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


3.CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU - BATTERY AND BODY GROUND)


    Toyota Fortuner. Ggn50, 60 Kun51, 61 Tgn51 Lan50.Can Communication.Can Communication System (W/ Vsc).Can Communication System (W/ Vsc) Skid Control Ecu Communication Stop Mode

  1. Reconnect the cable to the negative (-) battery terminal.

    NOTICE:
    When disconnecting the cable from the negative (-) battery terminal, some systems need to be initialized after the cable is reconnected (Toyota Fortuner RM000004W63000X.html).

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    S25-1 (GND1) - Body ground
    		Always
    		Below 1 Ω
    S25-13 (GND2) - 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
    S25-12 (+BS) - Body ground
    		Always
    		11 to 14 V
    S25-34 (IG1) - Body ground
    		Ignition switch ON
    		11 to 14 V


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

REPLACE BRAKE ACTUATOR ASSEMBLY (SKID CONTROL ECU) (Toyota Fortuner RM0000010K0010X.html)