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CAN COMMUNICATION SYSTEM(w/ Central Gateway ECU) Central Gateway ECU Communication Stop Mode

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DTC Code DTC Name
  Central Gateway ECU Communication Stop Mode
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DESCRIPTION

Detection Item Symptom Trouble Area
Central Gateway ECU Communication Stop Mode When "BUS 2" is selected on the CAN Bus Check screen of the GTS all ECUs and sensors except "CAN Gateway1" are not displayed.

  • Central gateway ECU branch line or connector

  • Power source circuit of central gateway ECU

  • Central gateway ECU
A0006PJE08
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WIRING DIAGRAM

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CAUTION / NOTICE / HINT

Note:

  • Before measuring the resistance of the CAN bus, turn the power switch off and leave the vehicle for 1 minute or more without operating the key or any switches, or opening or closing the doors. After that, disconnect the cable from the negative (-) auxiliary battery terminal and leave the vehicle for 1 minute or more before measuring the resistance.

  • After turning the power switch off, waiting time may be required before disconnecting the cable from the negative (-) auxiliary battery terminal. Therefore, make sure to read the disconnecting the cable from the negative (-) auxiliary battery terminal notices before proceeding with work (Click here).

  • Because the order of diagnosis is important to allow correct diagnosis, make sure to begin troubleshooting using How to Proceed with Troubleshooting when CAN communication system related DTCs are output (Click here).

  • After performing repairs, perform the DTC check procedure and confirm that the DTCs are not output again.

  • After the repair, perform the CAN bus check and check that all the ECUs and sensors connected to the CAN communication system are displayed (Click here).

Tip:

  • Operating the power switch, any other switches or a door triggers related ECU and sensor communication on the CAN. This communication will cause the resistance value to change.

  • Even after DTCs are cleared, if a DTC is stored again after driving the vehicle for a while, the malfunction may be occurring due to vibration of the vehicle. In such a case, wiggling the ECUs or wire harness while performing the inspection below may help determine the cause of the malfunction.

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PROCEDURE


  1. Click here

    CHECK OPEN IN BUS 2 LINES (CENTRAL GATEWAY ECU BRANCH LINE)


    1. Disconnect the cable from the negative (-) auxiliary battery terminal.

    2. A0008J9E02

      Disconnect the H195 central gateway ECU connector.

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

      Standard Resistance
      Tester Connection Condition Specified Value
      H195-18 (CA4H) - H195-17 (CA4L) Cable disconnected from negative (-) auxiliary battery terminal 54 to 69 Ω
      Table 1. Text in Illustration
      *a

      Front view of wire harness connector

      (to Central Gateway ECU)

    • OKClick here
    • NG

      REPAIR OR REPLACE CAN BRANCH LINE OR CONNECTOR (CENTRAL GATEWAY ECU)

  2. Click here

    CHECK HARNESS AND CONNECTOR (POWER SOURCE CIRCUIT)


    1. A0003R7E02

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

      Standard Resistance
      Tester Connection Condition Specified Value
      H195-10 (GND) - Body ground Cable disconnected from negative (-) auxiliary battery terminal Below 1 Ω
      Table 2. Text in Illustration
      *a

      Front view of wire harness connector

      (to Central Gateway ECU)

    2. Reconnect the cable to the negative (-) auxiliary battery terminal.

    3. A0007FNE02

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

      Standard Voltage
      Tester Connection Condition Specified Value
      H195-1 (BATT) - Body ground Power switch off 11 to 14 V
      H195-2 (ACC) - Body ground Power switch on (ACC) 11 to 14 V
      H195-11 (IG1) - Body ground Power switch on (IG) 11 to 14 V
      H195-12 (IG2) - Body ground Power switch on (IG) 11 to 14 V
      Table 3. Text in Illustration
      *a

      Front view of wire harness connector

      (to Central Gateway ECU)

    • OK

      REPLACE CENTRAL GATEWAY ECU (Click here)

    • NG

      REPAIR OR REPLACE HARNESS OR CONNECTOR (POWER SOURCE CIRCUIT)