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СИСТЕМА ЗАПУСКА И ОСТАНОВА (для моделей с 1AD-FTV), Diagnostic DTC:P1862

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DTC Code DTC Name
P1862 Clutch Control System 2
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DESCRIPTION

There are 2 clutch pedal switches for the clutch pedal. The clutch switch assembly (for upper) is used for stopping and restarting of the engine by stop and start control. During the stop and start control, the clutch start switch assembly (for lower) is used only when the clutch switch assembly (for upper) is stuck on or the fail-safe function is activated.

DTC No. Detection Item DTC Detection Condition Trouble Area Warning Indicate Memory
P1862 Clutch Control System 2

Both of the following conditions continue for 0.5 seconds or more (1 trip detection logic):


  • Clutch start switch assembly (for lower) is on.

  • Clutch switch assembly (for upper) is on.

  • Clutch start switch assembly (for lower)

  • Clutch switch assembly (for upper)

  • Wire harness or connector

  • Engine stop and start ECU

 Blinking DTC stored
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CONFIRMATION DRIVING PATTERN

Tip:

DTCs for the stop and start system are not cleared even if the malfunction has been repaired. After repairing the malfunction, be sure to clear the DTCs.

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  1. Tip:

    • When the cable is disconnected from the negative (-) battery terminal, stop and start control is prohibited for a certain amount of time. After connecting the cable, drive the vehicle until stop and start control is permitted (approximately 15 to 40 minutes).

    • Allow the engine to idle for 3 minutes after the engine warms up and check that the engine speed is within 50 rpm of the target idle speed.

    CONFIRMATION AFTER TROUBLESHOOTING


    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON and turn the GTS on.

    3. Clear the DTCs.

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      1. Powertrain > Stop and Start > Clear DTCs


    4. Start the engine.

    5. A01QSD7E04
      Table 1.
      *a Clutch Switch Signal
      *b ON
      *c OFF
      *d 1 second or more

      Fully depress the clutch pedal for 1 second or more. Release the clutch pedal and wait for at least 1 second.

    6. Repeat the previous step 3 times.

    7. Check that no DTCs are output.

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      1. Powertrain > Stop and Start > Trouble Codes


  2. STOP AND START SYSTEM OPERATION CHECK

    Tip:

    When the cable is disconnected from the negative (-) battery terminal, stop and start control is prohibited for a certain amount of time. After connecting the cable, drive the vehicle until stop and start control is permitted (approximately 15 to 40 minutes).


    1. Start the engine and warm it up.

    2. Turn the air conditioning system off.

    3. Drive the vehicle at 7 km/h (4.3 mph) or more.

      CAUTION:

      When performing the confirmation driving pattern, obey all speed limits and traffic laws.

    4. Stop the vehicle, move the shift lever to neutral and release the clutch pedal.

    5. Allow the engine to stop by stop and start control

    6. Depress the clutch pedal and start the engine.

A01QSNBE01
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WIRING DIAGRAM

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CAUTION / NOTICE / HINT

Note:

  • Before replacing the engine stop and start ECU, read the number of starter operations and write it into a new engine stop and start ECU.

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  • After replacing the engine stop and start ECU or air conditioning amplifier assembly, reset and perform learning of the air conditioning information in the engine stop and start ECU.

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  • After replacing the engine stop and start ECU or airbag sensor assembly, clear and calibrate the deceleration sensor zero point in the engine stop and start ECU.

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Tip:

  • DTCs for the stop and start system are not cleared even if the malfunction has been repaired. After repairing the malfunction, be sure to clear the DTCs.

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  • Using the GTS, read the freeze frame data before troubleshooting. System condition information is recorded as freeze frame data the moment a DTC is stored. This information can be useful when troubleshooting.

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PROCEDURE


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    READ VALUE USING GTS (CLUTCH UPPER SW AND CLUTCH LOWER SW)


    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the GTS on.

    4. Enter the following menus: Powertrain / Stop and Start / Data List / Clutch Upper SW and Clutch Lower SW.


      1. Powertrain > Stop and Start > Data List
        Tester Display
        Clutch Upper SW
        Clutch Lower SW





    5. Depress the clutch pedal and read the values displayed on the GTS.

      OK
      Tester Display Condition Normal Condition
      Clutch Upper SW Fully Depressed OFF
      Clutch Lower SW Fully Depressed ON
      Clutch Upper SW Fully Released ON
      Clutch Lower SW Fully Released OFF
      Result
      Proceed to
      NG
      OK

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    INSPECT CLUTCH START SWITCH ASSEMBLY (FOR LOWER)


    1. Inspect the clutch start switch assembly (for lower).

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      Result
      Proceed to
      OK
      NG

  3. Click here

    INSPECT CLUTCH SWITCH ASSEMBLY (FOR UPPER)


    1. Inspect the clutch switch assembly (for upper).

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      Result
      Proceed to
      OK
      NG

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    CHECK HARNESS AND CONNECTOR (ENGINE START AND STOP ECU - CLUTCH START SWITCH ASSEMBLY (FOR LOWER))


    1. Disconnect the A66 engine stop and start ECU connector.

    2. Disconnect the A4*1 or F2*2 clutch start switch assembly (for lower) connector.


      • *1: for LHD

      • *2: for RHD

    3. w/ Entry and Start System:

      Disconnect the G82 certification ECU (smart key ECU assembly) connector.

    4. w/o Entry and Start System:

      Disconnect the G4 ignition or starter switch assembly connector.

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

      Standard Resistance
      Table 2. for LHD:
      Tester Connection Condition Specified Condition
      A66-28 (CLL) - A4-2 Always Below 1 Ω
      A66-28 (CLL) - Body ground Always 10 kΩ or higher
      A4-2 - Body ground Always 10 kΩ or higher
      Table 3. for RHD:
      Tester Connection Condition Specified Condition
      A66-28 (CLL) - F2-2 Always Below 1 Ω
      A66-28 (CLL) - Body ground Always 10 kΩ or higher
      F2-2 - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    • OKClick here
    • NG

      REPAIR OR REPLACE HARNESS OR CONNECTOR

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    CHECK HARNESS AND CONNECTOR (ENGINE START AND STOP ECU - CLUTCH SWITCH ASSEMBLY (FOR UPPER))


    1. Disconnect the A66 engine stop and start ECU connector.

    2. Disconnect the A1*1 or F1*2 clutch switch assembly (for upper) connector.


      • *1: for LHD

      • *2: for RHD

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

      Standard Resistance
      Table 4. for LHD:
      Tester Connection Condition Specified Condition
      A66-11 (CLU) - A1-2 Always Below 1 Ω
      A66-11 (CLU) - Body ground Always 10 kΩ or higher
      A1-2 - Body ground Always 10 kΩ or higher
      Table 5. for RHD:
      Tester Connection Condition Specified Condition
      A66-11 (CLU) - F1-2 Always Below 1 Ω
      A66-11 (CLU) - Body ground Always 10 kΩ or higher
      F1-2 - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    • OK

      REPLACE ENGINE STOP AND START ECUClick here

    • NG

      REPAIR OR REPLACE HARNESS OR CONNECTOR