CAN COMMUNICATION SYSTEM Gateway ECU Communication Stop Mode

DESCRIPTION

Detection Item Symptom Trouble Area
Gateway ECU Communication Stop Mode

  • "Gateway" is not displayed on the "Communication Bus Check" screen of the intelligent tester

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

  • Power source circuit of the gateway ECU

  • Gateway ECU

Tech Tips

"Gateway" refers to the circuit that includes the gateway ECU.

WIRING DIAGRAM

A015ZH3E04
A01632TE01

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 operation.

  • 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 WIRE HARNESS (BATT, ACC, IG, GND)


    1. Turn the engine switch off.

    2. Disconnect the gateway ECU connector (J76).

    3. A0161FUE14

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

      Standard Resistance
      Tester Connection Condition Specified Value
      J76-24 (GND) - Body ground Always Below 1 Ω

    4. Measure the voltage according to the value(s) in the table below.

      Standard Voltage
      Tester Connection Condition Specified Value
      J76-10 (BATT) - Body ground Always 10 to 14 V
      J76-2 (ACC) - Body ground Engine switch on (IG) 10 to 14 V
      J76-1 (IG) - Body ground Engine switch on (IG) 10 to 14 V

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    REPLACE GATEWAY ECU Click here