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Home >> Toyota >> 2015 >> Avalon Hybrid Limited >> Repair and Diagnosis >> Restraints >> Seat Belts >> Pre-Collision System - Diagnostic Codes & Circuit Tests - (Hybrid) >> Pre-Collision System >> DTC C1A40: ENG / EHV Device [10/2014 - 10/2015] >> Procedure

DTC C1A40: ENG / EHV Device [10/2014 - 10/2015]: Procedure

  1. CHECK DTC OUTPUT (HYBRID CONTROL SYSTEM) 
    1. Check for hybrid control system DTCs (Refer to DTC CHECK / CLEAR [10/2014 - 10/2015] ).

      OK

      Hybrid control system DTCs are not output.

    Result: 

    NG 

    GO TO HYBRID CONTROL SYSTEM 

    (Refer to DIAGNOSTIC TROUBLE CODE CHART [10/2014 - 10/2015] )

    Result: 

    OK 

    See step  2

  2. CHECK DTC OUTPUT (SFI SYSTEM) 
    1. Check for SFI system DTCs (Refer to DTC CHECK / CLEAR [10/2014 - ] ).

      OK

      SFI system DTCs are not output.

    Result: 

    NG 

    GO TO SFI SYSTEM 

    (Refer to DIAGNOSTIC TROUBLE CODE CHART [10/2014 - 10/2015] )

    Result: 

    OK 

    See step  3

  3. REPLACE POWER MANAGEMENT CONTROL ECU 
    1. Replace the power management control ECU assembly (Refer to COMPONENTS [10/2014 - 10/2015] ).

    Result: 

    NEXT 

    See step  4

  4. CHECK DTC OUTPUT (PRE-COLLISION SYSTEM) 
    1. Connect the Techstream to the DLC3.
    2. Turn the power switch on (IG).
    3. Turn the Techstream on.
    4. Enter the following menus: Body Electrical / Pre-Collision 2 / Trouble Codes.
    5. Clear the DTCs (Refer to DTC CHECK / CLEAR [10/2014 - 10/2015] ).
    6. Recheck for DTCs.

      OK

      DTC C1A40 is not output.

    Result: 

    OK 

    END (POWER MANAGEMENT CONTROL ECU WAS DEFECTIVE) 

    Result: 

    NG 

    See step  5

  5. REPLACE DRIVING SUPPORT ECU ASSEMBLY 
    1. Replace the driving support ECU assembly (Refer to COMPONENTS [10/2014 - 10/2015] ).

    Result: 

    NEXT 

    See step  6

  6. CHECK DTC OUTPUT (PRE-COLLISION SYSTEM) 
    1. Connect the Techstream to the DLC3.
    2. Turn the power switch on (IG).
    3. Turn the Techstream on.
    4. Enter the following menus: Body Electrical / Pre-Collision 2 / Trouble Codes.
    5. Clear the DTCs (Refer to DTC CHECK / CLEAR [10/2014 - 10/2015] ).
    6. Recheck for DTCs.

      OK

      DTC C1A40 is not output.

    Result: 

    OK 

    END (DRIVING SUPPORT ECU ASSEMBLY WAS DEFECTIVE) 

    Result: 

    NG 

    REPLACE ECM 

    (Refer to COMPONENTS [10/2014 - ] )