EASY AND SMOOTH START SYSTEM, Diagnostic DTC:P1143/44

DTC Code DTC Name
P1143/44 Idle Volume High

DESCRIPTION

DTC No. Detection Condition Trouble Area
P1143/44 Idle volume voltage is 4.59 V or more.

  • Throttle position switch assembly

  • Harness or connector

  • Electric vehicle control ECU assembly

WIRING DIAGRAM

A01CIJBE01

INSPECTION PROCEDURE

Note


  • After replacing the electric vehicle control ECU assembly, perform clutch pedal stroke sensor assembly release position calibration Click here.

  • DTCs stored in the electric vehicle control ECU assembly are not cleared even after the system returns to a normal condition, so clear the DTCs after performing troubleshooting Click here.

PROCEDURE


  1. CHECK ELECTRIC VEHICLE CONTROL ECU ASSEMBLY (ASCS, APC4 TERMINAL)


    1. Turn the ignition switch to ON.

    2. A01CHH1E09
      Text in Illustration
      *a

      Component with harness connected

      (to Electric Vehicle Control ECU Assembly)

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      E43-16 (APC4) - E43-18 (AGD4) Ignition switch ON 4.5 to 5.5 V
      E43-17 (ASCS) - E43-18 (AGD4)

      Ignition switch ON

      Throttle position switch assembly off

      		 0 V

      Ignition switch ON

      Throttle position switch assembly ON to MAX

      0.5 to 4.5 V

      (Voltage changes continuously)

    NG

    INSPECT THROTTLE POSITION SWITCH ASSEMBLY Click here

    OK

  2. CLEAR DTC


    1. Clear the DTCs Click here.


    NEXT

  3. CHECK FOR DTC


    1. Check for DTCs Click here.

      Result
      Result Proceed to
      DTC is not output A
      DTC is output B

    B

    REPLACE ELECTRIC VEHICLE CONTROL ECU ASSEMBLY Click here

    A

    USE SIMULATION METHOD TO CHECK Click here

  4. INSPECT THROTTLE POSITION SWITCH ASSEMBLY


    1. Turn the ignition switch off.

    2. Remove the throttle position switch assembly.

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

      A01CJ4RE01
      Text in Illustration
      *a

      Component without harness connected

      (Throttle Position Switch Assembly)

      		 - -
      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      2 (VICM) - 3 (E2) OFF 10 kΩ or higher
      ON(20°) 0.19 to 0.26 kΩ
      MAX(300°) 0.96 to 1.44 kΩ
      ON (20°) to MAX (300°) Changes continuously

    NG

    REPLACE THROTTLE POSITION SWITCH ASSEMBLY

    OK

  5. CHECK HARNESS AND CONNECTOR (ELECTRIC VEHICLE CONTROL ECU ASSEMBLY - THROTTLE POSITION SWITCH ASSEMBLY)


    1. Turn the ignition switch off.

    2. Disconnect the E43 electric vehicle control ECU assembly connector.

    3. Disconnect the T16 throttle position switch assembly.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      E43-16 (APC4) - T16-1 (VC) Always Below 1 Ω
      E43-17 (ASCS) - T16-2 (VICM) Always Below 1 Ω
      E43-18 (AGD4) - T16-3 (E2) Always Below 1 Ω
      E43-16 (APC4) or T16-1 (VC) - Body ground Always 10 kΩ or higher
      E43-17 (ASCS) or T16-2 (VICM) - Body ground Always 10 kΩ or higher
      E43-18 (AGD4) or T16-3 (E2) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    REPLACE ELECTRIC VEHICLE CONTROL ECU ASSEMBLY Click here