SFI SYSTEM, Diagnostic DTC:P05B112, P05B114, P05B131

DTC Code DTC Name
P05B112 Active Grille Air Shutter "B" Circuit Short to Battery
P05B114 Active Grille Air Shutter "B" Circuit Short to Ground or Open
P05B131 Active Grille Air Shutter "B" No Signal

DESCRIPTION

Tech Tips

These DTCs are applicable to models w/ Grille Shutter System only.

Refer to DTC P059F73.

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DTC No. Detection Item DTC Detection Condition Trouble Area MIL Memory Note
P05B112 Active Grille Air Shutter "B" Circuit Short to Battery

All of the following conditions are met and the ECM receives a malfunction signal 17 times* (1 trip detection logic):


  • The auxiliary battery voltage is 10.5 to 16 V.

  • Grille shutter opening or closing operation is being performed.

  • The Hall IC1 signal or Hall IC2 signal is stuck on the high side when the other signal is received normally.

 Swing grille actuator assembly Does not come on DTC stored SAE Code: P05B3
P05B114 Active Grille Air Shutter "B" Circuit Short to Ground or Open

All of the following conditions are met and the ECM receives a malfunction signal 17 times* (1 trip detection logic):


  • The auxiliary battery voltage is 10.5 to 16 V.

  • Grille shutter opening or closing operation is being performed.

  • The Hall IC1 signal or Hall IC2 signal is stuck on the low side when the other signal is received normally.

 Swing grille actuator assembly Does not come on DTC stored SAE Code: P05B4
P05B131 Active Grille Air Shutter "B" No Signal

Both of the following conditions are met and the ECM receives a malfunction signal 17 times* (2 trip detection logic):


  • Grille shutter opening or closing operation is being performed.

  • The Hall IC1 signal and Hall IC2 signal are not received while the grille shutter motor (swing grille actuator assembly) is operating.

 Swing grille actuator assembly Does not come on DTC stored SAE Code: P05B2

Tech Tips

*: For every 65 ms that the ECM receives a grille shutter system malfunction signal from the grille shutter ECU (swing grille actuator assembly) the ECM determines it has received the signal 1 time. If the ECM determines the malfunction signal has been received 17 consecutive times (the signal is received for approximately 1 second continuously), it will store a DTC.

MONITOR DESCRIPTION


  1. Hall IC Signal Malfunction

    If the grille shutter ECU (swing grille actuator assembly) detects a stuck high or stuck low signal from either Hall IC1 or Hall IC2, it will output a malfunction signal to the ECM and the ECM will store a DTC.

    A001RC5E01
    Detection Condition DTC No.
    Short to +B (Stuck High) P05B112 (Active Grille Air Shutter "B" Circuit Short to Battery)
    Open or Short to Ground (Stuck Low) P05B114 (Active Grille Air Shutter "B" Circuit Short to Ground or Open)

  2. Hall IC Signal Reception Malfunction

    If the grille shutter ECU (swing grille actuator assembly) detects a stuck high or stuck low signal from both Hall IC1 and Hall IC2, it will output a malfunction signal to the ECM and the ECM will store a DTC.

    A001QDKE02
    Detection Condition DTC No.
    Abnormal Signal (Hall IC1 and Hall IC2) P05B131 (Active Grille Air Shutter "B" No Signal)

CONFIRMATION DRIVING PATTERN


  1. Connect the GTS to the DLC3.

  2. Turn the power switch on (IG).

  3. Turn the GTS on.

  4. Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).

  5. Turn the power switch off and wait for at least 30 seconds.

  6. Turn the power switch on (IG).

  7. Turn the GTS on.

  8. Enter the following menus: Body Electrical / Grill Shutter / Active Test / Shutter Closing Operation Lock Detection / Data List / Shutter Operation Lock Detection Result for Active Test.

  9. According to the display on the GTS, perform the Active Test and read the value of Data List item Shutter Operation Lock Detection Result for Active Test.

    OK
    "Normal" is displayed.

  10. Enter the following menus: Body Electrical / Grill Shutter / Active Test / Shutter Opening Operation Lock Detection / Data List / Shutter Operation Lock Detection Result for Active Test.

  11. According to the display on the GTS, perform the Active Test and read the value of Data List item Shutter Operation Lock Detection Result for Active Test.

    OK
    "Normal" is displayed.

CAUTION / NOTICE / HINT

Note

In order to ensure safety, before performing troubleshooting or removing the swing grille actuator assembly or radiator shutter sub-assembly, change the grille shutter control mode to maintenance mode.

Tech Tips

Read freeze frame data using the GTS. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air fuel ratio was lean or rich, and other data from the time the malfunction occurred.

PROCEDURE


  1. PERFORM UTILITY USING GTS (GRILL SHUTTER CONTROL MODE SWITCHING)


    1. Connect the GTS to the DLC3.

    2. Turn the power switch on (IG).

    3. Turn the GTS on.

    4. Enter the following menus: Body Electrical / Grill Shutter / Utility / Grill Shutter Control Mode Switching.


      Body Electrical > Grill Shutter > Utility
      Tester Display
      Grill Shutter Control Mode Switching

    5. According to the display on the GTS, change the grille shutter control mode from normal mode to maintenance mode.

      Result
      Proceed to
      NEXT

    NEXT

  2. REPLACE SWING GRILLE ACTUATOR ASSEMBLY


    1. Replace the swing grille actuator assembly.

      Click here

      Result
      Proceed to
      NEXT

    NEXT

  3. PERFORM UTILITY USING GTS (GRILL SHUTTER CONTROL MODE SWITCHING AND GRILL SHUTTER INITIALIZATION)

    Tech Tips

    When changing the grille shutter control mode and/or performing initialization by driving the vehicle, the grille shutter control mode can only be changed and initialization can only be performed if the grille shutter system is in maintenance mode.

    Click here


    1. Connect the GTS to the DLC3.

    2. Turn the power switch on (IG).

    3. Turn the GTS on.

    4. Enter the following menus: Body Electrical / Grill Shutter / Utility / Grill Shutter Control Mode Switching.


      Body Electrical > Grill Shutter > Utility
      Tester Display
      Grill Shutter Control Mode Switching

    5. According to the display on the GTS, change the grille shutter control mode from maintenance mode to normal mode.

    6. Enter the following menus: Body Electrical / Grill Shutter / Utility / Grill Shutter Initialization.


      Body Electrical > Grill Shutter > Utility
      Tester Display
      Grill Shutter Initialization

    7. According to the display on the GTS, perform Grill Shutter Initialization.

    8. Enter the following menus: Body Electrical / Grill Shutter / Data List / Shutter Control State and Shutter Initialization.


      Body Electrical > Grill Shutter > Data List
      Tester Display
      Shutter Control State
      Shutter Initialization

    9. According to the display on the GTS, read the Data List and check that the value of Shutter Control State is "Normal" and Shutter Initialization is "Complete".

      Result
      Proceed to
      NEXT

    NEXT

    END