SFI SYSTEM, Diagnostic DTC:P1562

DTC Code DTC Name
P1562 Battery Voltage too Low to Complete Throttle Autozero

DESCRIPTION

DTC No. Detection Item DTC Detection Condition Trouble Area MIL Memory
P1562 Battery Voltage too Low to Complete Throttle Autozero

DTC Detection Condition


    Enable Criteria

  • Engine switch on (IG)

  • Engine not running

  • Initialize or auto-zero control states


    Malfunction Criteria

  • Battery voltage less than 8 V


    Diagnostic Mask

  • -


    Monitor

  • Instant

  • During auto-zero function

 Throttle body with motor assembly Come on DTC stored

CAUTION / NOTICE / HINT

Tech Tips


  • Read freeze frame data using the GTS. Freeze frame data records engine conditions when a malfunction occurs. This information can be useful when troubleshooting.

  • Since a pending DTC is not stored for this DTC, it takes time to confirm whether the malfunction has been successfully repaired by checking for this DTC. When confirming whether the malfunction has been successfully repaired, compare "ISC Learning Value" recorded in the freeze frame data with "ISC Learning Value" in the Data List after repairs have been made to save time.

PROCEDURE


  1. CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P1562)


    1. Connect the GTS to the DLC3.

    2. Turn the engine switch on (IG).

    3. Turn the GTS on.

    4. Enter the following menus: Powertrain / Engine / Trouble Codes.

    5. Read the DTCs.

      Result
      Result Proceed to
      DTC P1562 is output A
      DTC P1562 and other DTCs are output B

      Tech Tips

      If any DTCs other than P1562 are output, troubleshoot those DTCs first.


    B

    GO TO DTC CHART Click here

    A

  2. READ FREEZE FRAME DATA


    1. Connect the GTS to the DLC3.

    2. Turn the engine switch on (IG).

    3. Turn the GTS on.

    4. Using the GTS, confirm the vehicle conditions recorded in the freeze frame data which were present when the DTC was stored.

      Click here

      Result
      Proceed to
      NEXT

    NEXT

  3. REMOVE FOREIGN MATTER (CLEAN THROTTLE BODY WITH MOTOR ASSEMBLY)


    1. Clean off any deposits from the inside of the throttle body assembly.

      B00463YC01
      *1 Throttle Body with Motor Assembly *2 Bore
      *3 Valve - -
      *a Reference *b Throttle Body with Motor Assembly Cross-section Diagram
      *c When valve fully opened *d Do not directly apply cleaner
      *e Deposits - -

      1. Push open the throttle valve and wipe off any carbon from the valve and bore using a piece of cloth soaked in non-residue solvent.

      Note


      • Make sure that the cloth or your fingers do not get caught in the valve.

      • Make sure that foreign matter does not enter the throttle valve.

      • Do not directly apply non-residue solvent to the throttle body with motor assembly or wash the throttle body with motor assembly. Cleaning solvent may leak into the motor from the shaft and cause problems such as rust or valve movement problems.

      • If there is coating material on the edge of the valve, be careful not to remove it.

      • Push the throttle valve open gently with your finger and check that the throttle valve moves smoothly.

      Tech Tips


      • If the throttle valve does not move smoothly, replace the throttle body with motor assembly.

      • Perform "Inspection After Repair" after cleaning the throttle body with motor assembly.

        Click here

      Result
      Proceed to
      NEXT

    NEXT

  4. CHECK WHETHER DTC OUTPUT RECURS


    1. Connect the GTS to the DLC3.

    2. Turn the engine switch on (IG).

    3. Turn the GTS on.

    4. Clear the DTCs.

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

    6. Turn the engine switch on (IG).

    7. Turn the GTS on.

    8. Start the engine.

    9. Warm up the engine.

    10. Enter the following menus: Powertrain / Engine / Utility / All Readiness.

    11. Input the DTC: P1562.

    12. Check the DTC judgment result.

      Tech Tips

      Perform "Inspection After Repair" after replacing the throttle body with motor assembly.

      Click here

      Result
      Result Proceed to

      NORMAL

      (DTCs are not output)

      		 A

      ABNORMAL

      (DTC P1562 is output)

      		 B

    B

    REPLACE THROTTLE BODY WITH MOTOR ASSEMBLY Click here

    A

  5. REPLACE THROTTLE BODY WITH MOTOR ASSEMBLY


    1. Replace the throttle body with motor assembly.

      Click here

      Tech Tips

      Perform "Inspection After Repair" after replacing the throttle body with motor assembly.

      Click here

      Result
      Proceed to
      NEXT

    NEXT

  6. CHECK WHETHER DTC OUTPUT RECURS


    1. Connect the GTS to the DLC3.

    2. Turn the engine switch on (IG).

    3. Turn the GTS on.

    4. Clear the DTCs.

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

    6. Turn the engine switch on (IG).

    7. Turn the GTS on.

    8. Start the engine.

    9. Warm up the engine.

    10. Read the values displayed on the GTS while fully depressing and releasing the accelerator pedal quickly.

    11. Enter the following menus: Powertrain / Engine / Utility / All Readiness.

    12. Input the DTC: P1562.

    13. Check the DTC judgment result.

      Tech Tips

      Perform "Inspection After Repair" after replacing the throttle body with motor assembly.

      Click here

      Result
      Result Proceed to

      NORMAL

      (DTCs are not output)

      		 A

      ABNORMAL

      (DTC P1562 is output)

      		 B

    A

    END

    B

    REPLACE ECM Click here