CAN COMMUNICATION SYSTEM Grille Shutter Communication Stop Mode

DESCRIPTION

Detection Item Symptom Trouble Area
Grille Shutter Communication Stop Mode

Any of the following conditions are met:


  • Communication stop for "Grill Shutter" is indicated on the "Communication Bus Check" screen of the GTS.

    Click here

  • Communication stop history for "Grill Shutter" is indicated on the "Communication Bus Check (Detail)" screen of the GTS. (The Lost Communication Time value for "Grill Shutter" is 6 or more.)

    Click here

  • Communication system DTCs (DTCs that start with U) that correspond to "Grille Shutter Communication Stop Mode" in "DTC Combination Table" are output.

    Click here


  • Swing grille actuator assembly branch line or connector

  • Power source circuit of swing grille actuator assembly

  • Swing grille actuator assembly ground circuit

  • Swing grille actuator assembly

WIRING DIAGRAM

B006J4ZE36

CAUTION / NOTICE / HINT

Note


  • 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

  • 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

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

    DTC check procedure: Turn the power switch on (IG) and wait at least approximately 14 seconds.

  • After the repair, perform the CAN bus check and check that all the ECUs and sensors connected to the CAN communication system are displayed as normal.

    Click here

  • Inspect the fuses for circuits related to this system before performing the following procedure.

Tech Tips


  • Before disconnecting related connectors for inspection, push in on each connector body to check that the connector is not loose or disconnected.

  • When a connector is disconnected, check that the terminals and connector body are not cracked, deformed or corroded.

PROCEDURE


  1. CHECK FOR OPEN IN CAN BUS LINES (SWING GRILLE ACTUATOR ASSEMBLY BRANCH LINE)


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

    2. Disconnect the A28 or A29 swing grille actuator assembly connector.

    3. B006HU8C04
      *A w/ Occupant Classification System
      *B w/o Occupant Classification System
      *a

      Front view of wire harness connector

      (to Swing Grille Actuator Assembly)

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

      Standard Resistance
      w/ Occupant Classification System
      Tester Connection Condition Specified Condition
      A28-2 (CANP) - A28-3 (CANN) Cable disconnected from negative (-) auxiliary battery terminal 54 to 69 Ω
      w/o Occupant Classification System
      Tester Connection Condition Specified Condition
      A29-6 (CANP) - A29-5 (CANN) Cable disconnected from negative (-) auxiliary battery terminal 54 to 69 Ω
      Result
      Result
      OK
      NG

    NG

    REPAIR OR REPLACE CAN BRANCH LINES OR CONNECTOR (SWING GRILLE ACTUATOR ASSEMBLY)

    OK

  2. CHECK HARNESS AND CONNECTOR (POWER SOURCE CIRCUIT)


    1. B006HU8C07
      *A w/ Occupant Classification System
      *B w/o Occupant Classification System
      *a

      Front view of wire harness connector

      (to Swing Grille Actuator Assembly)

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

      Standard Resistance
      w/ Occupant Classification System
      Tester Connection Condition Specified Condition
      A28-1 (GND) - Body ground Cable disconnected from negative (-) auxiliary battery terminal Below 1 Ω
      w/o Occupant Classification System
      Tester Connection Condition Specified Condition
      A29-3 (GND) - Body ground Cable disconnected from negative (-) auxiliary battery terminal Below 1 Ω

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

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

      Standard Voltage
      w/ Occupant Classification System
      Tester Connection Condition Specified Condition
      A28-4 (+B) - Body ground Power switch off 11 to 14 V
      w/o Occupant Classification System
      Tester Connection Condition Specified Condition
      A29-1 (+B) - Body ground Power switch off 11 to 14 V
      Result
      Result
      OK
      NG

    OK

    REPLACE SWING GRILLE ACTUATOR ASSEMBLY Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR (POWER SOURCE CIRCUIT)