Can Communication System Abs And Traction Actuator (Skid Control Ecu) Communication Stop Mode

Communication System. Toyota Rav4. Aca30, 33, 38 Gsa33 Zsa30, 35
Can Communication. Toyota Rav4. Aca30, 33, 38 Gsa33 Zsa30, 35

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL

CHECK FOR OPEN IN CAM BUS WIRE (ABS AND TRACTION ACTUATOR BRANCH WIRE)

CHECK HARNESS AND CONNECTOR (ABS AND TRACTION ACTUATOR - BATTERY AND BODY GROUND)

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
Either condition is met:
  1. "ABS/VSC/TRC" is not displayed on "Bus Check".
  2. "ABS and Traction Actuator (Skid Control ECU) Communication Stop Mode" in "DTC Combination Table" applies.
  1. Power source or inside ABS and traction actuator (skid control ECU)
  2. ABS and traction actuator (skid control ECU) branch wire or connector
  3. ABS and traction actuator (skid control ECU)
HINT:
For vehicle with a vehicle stability control system only.

WIRING DIAGRAM


Toyota Rav4. Aca30, 33, 38 Gsa33 Zsa30, 35.Can Communication.Can Communication System.Can Communication System Abs And Traction Actuator (Skid Control Ecu) Communication Stop Mode


INSPECTION PROCEDURE

NOTICE:
  1. Turn the ignition switch off before measuring the resistance of the main wire and the branch wire.
  2. After the ignition switch is turned off, check that the key reminder warning system and light reminder buzzer are not in operation.
  3. Before measuring the resistance, leave the vehicle for at least 1 minute and do not operate the ignition switch, any switches or doors. If doors need to be opened in order to check connectors, open the doors and leave them open.
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 resistance of the main wire and the branch wire.

    CAUTION:
    Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system.
    NOTICE:
    1. w/ Navigation System (for HDD):
      After the ignition switch is turned off, the HDD navigation system requires approximately a minute to record various types of memory and settings. As a result, after turning the ignition switch off, wait a minute or more before disconnecting the cable from the negative (-) battery terminal.
    2. When disconnecting the cable, some systems need to be initialized after the cable is reconnected.

NEXT


2.CHECK FOR OPEN IN CAM BUS WIRE (ABS AND TRACTION ACTUATOR BRANCH WIRE)


    Toyota Rav4. Aca30, 33, 38 Gsa33 Zsa30, 35.Can Communication.Can Communication System.Can Communication System Abs And Traction Actuator (Skid Control Ecu) Communication Stop Mode

  1. Disconnect the A67 ABS and traction actuator (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
    A67-25 (CANH) - A67-14 (CANL)
    		Ignition switch off
    		54 to 69 Ω


NG
REPAIR OR REPLACE ABS AND TRACTION ACTUATOR BRANCH WIRE OR CONNECTOR (CANH, CANL)
OK


3.CHECK HARNESS AND CONNECTOR (ABS AND TRACTION ACTUATOR - BATTERY AND BODY GROUND)

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

    NOTICE:
    When disconnecting the cable, some systems need to be initialized after the cable is reconnected.


    Toyota Rav4. Aca30, 33, 38 Gsa33 Zsa30, 35.Can Communication.Can Communication System.Can Communication System Abs And Traction Actuator (Skid Control Ecu) Communication Stop Mode

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    A67-1 (GND1) - Body ground
    		Always
    		Below 1 Ω
    A67-13 (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
    A67-34 (IG1) - Body ground
    		Ignition switch on (IG)
    		11 to 14 V


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

REPLACE ABS AND TRACTION ACTUATOR (SKID CONTROL ECU)