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Home >> Toyota >> 2015 >> Avalon Hybrid Limited >> Repair and Diagnosis >> Hybrid/Electric Powertrain >> Testing and Diagnosis >> Hybrid Control System - Diagnostic Codes - (Hybrid) (2 Of 8) >> Hybrid Control System >> DTC P3107-214: Lost Communication with Airbag System Control Module [10/2014 - 10/2015] >> Procedure

DTC P3107-214: Lost Communication with Airbag System Control Module [10/2014 - 10/2015]: Procedure

  1. CHECK DTC OUTPUT (SRS AIRBAG) 
    1. Connect the Techstream to the DLC3.
    2. Turn the power switch on (IG).
    3. Enter the following menus: Body Electrical / SRS Airbag / Trouble Codes.
    4. Check for DTCs.

      Result

      Result Proceed to
      Airbag system DTCs are not output. A
      Airbag system DTCs are output. B
    5. Turn the power switch off.

    B 

    GO TO DTC CHART (AIRBAG SYSTEM) 

    (Refer to HOW TO PROCEED WITH TROUBLESHOOTING [10/2014 - 10/2015] )

    A 

    See step  2

  2. CHECK AIRBAG ECU ASSEMBLY (CHECK WAVEFORM) 

    See step  2

    B 

    See step  6

    A 

    See step  3

  3. CLEAR DTC 

    Refer to PROCEDURE - Step 4

    NEXT 

    See step  4

  4. CHECK DTC OUTPUT (HYBRID CONTROL) 
    1. Connect the Techstream to the DLC3.
    2. Turn the power switch on (IG).
    3. Enter the following menus: Powertrain / Hybrid Control / Trouble Codes.
    4. Check for DTCs.

      Result

      Result Proceed to
      P3107-214 is not output. A
      P3107-214 is output again. B
    5. Turn the power switch off.

    B 

    REPLACE POWER MANAGEMENT CONTROL ECU 

    (Refer to COMPONENTS [10/2014 - 10/2015] )

    A 

    See step  5

  5. CHECK FOR INTERMITTENT PROBLEMS 

    (Refer to CHECK FOR INTERMITTENT PROBLEMS [10/2014 - ] )

    OK 

    REPLACE POWER MANAGEMENT CONTROL ECU 

    (Refer to COMPONENTS [10/2014 - 10/2015] )

    NG 

    REPAIR OR REPLACE MALFUNCTIONING PARTS, COMPONENT AND AREA 

  6. CHECK CONNECTOR CONNECTION CONDITION (POWER MANAGEMENT CONTROL ECU CONNECTOR) 

    Refer to PROCEDURE - Step 3

    NG 

    CONNECT SECURELY 

    OK 

    See step  7

  7. CHECK CONNECTOR CONNECTION CONDITION (AIRBAG ECU ASSEMBLY CONNECTOR) 
    1. Check the connector connections and contact pressure of the relevant terminals for the airbag ECU assembly connectors.
      GTY383935Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Component with harness connected
      (Airbag ECU Assembly)

      OK

      The connectors are connected securely and there are no contact pressure problems.

    NG 

    CONNECT SECURELY 

    OK 

    See step  8

  8. CHECK HARNESS AND CONNECTOR (+B SHORT) 
    1. Remove the PM IGCT fuse from the No. 2 engine room relay block.
      GTY595564Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 No. 2 Engine Room Relay Block
      *2 PM IGCT Fuse
    2. Remove the AM2 fuse from the engine room relay block and junction block assembly.
      GTY603009Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 Engine Room Relay Block and Junction Block Assembly
      *2 AM2 Fuse
    3. Remove the ECU-IG2 NO. 1 fuse from the instrument panel junction block assembly.
    4. Disconnect the D36 airbag ECU assembly connector.
      GTY557637Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Component without harness connected
      (Airbag ECU Assembly)
    5. Measure the resistance according to the value (s) in the table below.
      GTY581037Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Component with harness connected
      (Power Management Control ECU)

      Standard Resistance

      Tester Connection Condition Specified Condition
      D104-29 (ABFS) - A53-2 (+B2) Power switch off 10 kΩ or higher
      D104-29 (ABFS) - A54-5 (+B1) Power switch off 10 kΩ or higher
      D104-29 (ABFS) - D104-1 (AM22) Power switch off 10 kΩ or higher
      D104-29 (ABFS) - D105-7 (AM21) Power switch off 10 kΩ or higher
      D104-29 (ABFS) - A54-6 (MREL) Power switch off 10 kΩ or higher
      D104-29 (ABFS) - A54-1 (IG2) Power switch off 10 kΩ or higher
      D104-29 (ABFS) - D105-1 (ACCD) Power switch off 10 kΩ or higher
      D104-29 (ABFS) - D105-2 (IG1D) Power switch off 10 kΩ or higher
      D104-29 (ABFS) - A54-2 (IG2D) Power switch off 10 kΩ or higher
      D104-29 (ABFS) - D104-14 (SPDI) Power switch off 10 kΩ or higher
      D104-29 (ABFS) - A53-16 (GI) Power switch off 10 kΩ or higher
    6. Reconnect the D36 airbag ECU assembly connector.
    7. Install the PM IGCT fuse, AM2 fuse and ECU-IG2 NO. 1 fuse.

    NG 

    See step  11

    OK 

    See step  9

  9. CHECK HARNESS AND CONNECTOR (POWER MANAGEMENT CONTROL ECU - AIRBAG ECU ASSEMBLY) 
    1. Disconnect the D104 power management control ECU connector.
    2. Disconnect the D36 airbag ECU assembly connector.
    3. Measure the resistance according to the value (s) in the table below.
      GTY562329Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Rear view of wire harness connector
      (to Power Management Control ECU)
      *b Rear view of wire harness connector
      (to Airbag ECU Assembly)

      Standard Resistance (Check for Open)

      Tester Connection Condition Specified Condition
      D104-29 (ABFS) - D36-14 (GSW2) Power switch off Below 1 Ω

      Standard Resistance (Check for Short)

      Tester Connection Condition Specified Condition
      D104-29 (ABFS) or D36-14 (GSW2) - Body ground and other terminals Power switch off 10 kΩ or higher

      HINT: 

      As necessary, check that there are no wires shorted to power supply when performing the above wire harness inspection.

    4. Reconnect the D36 airbag ECU assembly connector.
    5. Reconnect the D104 power management control ECU connector.

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK 

    See step  10

  10. CHECK POWER MANAGEMENT CONTROL ECU 
    1. Disconnect the D36 airbag ECU assembly connector.
      GTY557636Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Component without harness connected
      (Airbag ECU Assembly)
    2. Turn the power switch on (IG).
    3. Measure the voltage according to the value (s) in the table below.
      GTY590160Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Component with harness connected
      (Power Management Control ECU)

      Standard Voltage

      Tester Connection Condition Specified Condition
      D104-29 (ABFS) - Body ground Power switch on (IG) 11 to 14 V
      NOTE:

      Turning the power switch on (IG) with the airbag ECU assembly connector disconnected causes other DTCs to be stored. Clear the DTCs after performing this inspection.

    4. Turn the power switch off.
    5. Reconnect the D36 airbag ECU assembly connector.

    OK 

    REPLACE AIRBAG ECU ASSEMBLY 

    (Refer to COMPONENTS [10/2014 - ] )

    NG 

    REPLACE POWER MANAGEMENT CONTROL ECU 

    (Refer to COMPONENTS [10/2014 - 10/2015] )

  11. CHECK HARNESS AND CONNECTOR (SHORT TO POWER SUPPLY WIRES) 
    1. Remove the PM IGCT fuse from the No. 2 engine room relay block.
      GTY595567Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 No. 2 Engine Room Relay Block
      *2 PM IGCT Fuse
    2. Remove the AM2 fuse from the engine room relay block and junction block assembly.
      GTY563270Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 Engine Room Relay Block and Junction Block Assembly
      *2 AM2 Fuse
    3. Remove the ECU-IG2 NO. 1 fuse from the instrument panel junction block assembly.
    4. Disconnect the D36 airbag ECU assembly connector.
      GTY555863Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Component without harness connected
      (Airbag ECU Assembly)
    5. Disconnect the A53, A54, D104 and D105 power management control ECU connectors.
    6. Measure the resistance according to the value (s) in the table below.
      GTY551272Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Rear view of wire harness connector
      (to Power Management Control ECU)

      Standard Resistance

      Tester Connection Condition Specified Condition
      D104-29 (ABFS) - A53-2 (+B2) Power switch off 10 kΩ or higher
      D104-29 (ABFS) - A54-5 (+B1) Power switch off 10 kΩ or higher
      D104-29 (ABFS) - D104-1 (AM22) Power switch off 10 kΩ or higher
      D104-29 (ABFS) - D105-7 (AM21) Power switch off 10 kΩ or higher
      D104-29 (ABFS) - A54-6 (MREL) Power switch off 10 kΩ or higher
      D104-29 (ABFS) - A54-1 (IG2) Power switch off 10 kΩ or higher
      D104-29 (ABFS) - D105-1 (ACCD) Power switch off 10 kΩ or higher
      D104-29 (ABFS) - D105-2 (IG1D) Power switch off 10 kΩ or higher
      D104-29 (ABFS) - A54-2 (IG2D) Power switch off 10 kΩ or higher
      D104-29 (ABFS) - D104-14 (SPDI) Power switch off 10 kΩ or higher
      D104-29 (ABFS) - A53-16 (GI) Power switch off 10 kΩ or higher
    7. Reconnect the A53, A54, D104 and D105 power management control ECU connectors.
    8. Reconnect the D36 airbag ECU assembly connector.
    9. Install the PM IGCT fuse, AM2 fuse and ECU-IG2 NO. 1 fuse.

    OK 

    REPLACE POWER MANAGEMENT CONTROL ECU 

    (Refer to COMPONENTS [10/2014 - 10/2015] )

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

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