STOP AND START SYSTEM Stop and Start Priority Control System

DESCRIPTION


  1. except Multi-information Display (Color Type)

    The stop and stop control mode can be changed by pressing and holding the eco run cancel switch assembly.

    When start priority control (LONG) mode is selected, "LONG" will be displayed on the multi-information display as an interruption message.

    When the eco run cancel switch assembly is pressed and held to change the stop and start control mode, a signal is sent from the eco run cancel switch assembly to the engine stop and start ECU. Cooperative control is performed by the air conditioning amplifier assembly and engine stop and start ECU based on the selected control mode.

    When stop and start priority control (LONG) is selected, the operation time of stop and start control will be extended in order to improve fuel economy.

  2. for Multi-information Display (Color Type)

    When the steering pad switch assembly is used to select a control mode, a status change request signal is sent from the combination meter assembly to the engine stop and start ECU via CAN communication. Cooperative control is performed by the air conditioning amplifier assembly and engine stop and start ECU based on the selected control mode.

    When stop and start priority control (LONG) is selected, the operation time of stop and start control will be extended in order to improve fuel economy.

WIRING DIAGRAM


  1. except Multi-information Display (Color Type)

    A01M27LE01

  2. for Multi-information Display (Color Type)

    A01M135E05

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

    Click here

  • 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.

    Click here

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

    Click here

Tech Tips


  • When stop and start priority control (LONG) is selected, the operation of the air conditioning system is limited. If the customer reports that the cooling effectiveness of the air conditioning system is poor, check the selected control mode. If stop and start priority control (LONG) is selected, cancel the control mode and check if the cooling effectiveness of the air conditioning system improves. If it improves, explain to the customer that the operation of the air conditioning system was limited by stop and start control.

  • Depending on the vehicle conditions, the stop and start operation time may not change even if stop and start priority control (LONG) is selected.

PROCEDURE


  1. CONFIRM MODEL


    1. Choose the model to be inspected.

      Result
      Result Proceed to
      except Multi-information Display (Color Type) A
      for Multi-information Display (Color Type) B

    B

    CHECK PROBLEM SYMPTOMS Click here

    A

  2. CHECK PROBLEM SYMPTOMS


    1. Check the problem symptoms.

      Tech Tips


      • Check each symptom by checking the suspected areas in the table below.

      • By using the GTS and entering the following menus, the selected mode can be confirmed.

        Powertrain / Stop and Start / Data List / Stop & Start A/C Mode

      Result
      Problem Symptoms Trouble Area Proceed to
      The control mode does not change and an interruption message is not displayed on the multi-information display

      • Eco run cancel switch assembly

      • Wire harness or connector

      • Air conditioning amplifier assembly

      		 A
      The control mode changes but an interruption message is not displayed on the multi-information display

      • Combination meter assembly

      • CAN communication system

      		 B
      The control mode does not change but an interruption message is displayed on the multi-information display

      • Air conditioning amplifier assembly

      • CAN communication system

      		 C
      Control mode returns to default mode after turning ignition switch to ON Engine stop and start ECU D

    B

    GO TO METER / GAUGE SYSTEM Click here

    C

    CHECK DTC OUTPUT Click here

    D

    CHECK DTC OUTPUT Click here

    A

  3. READ VALUE USING GTS (CANCEL SWITCH)


    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 / Cancel Switch.


      Powertrain > Stop and Start > Data List
      Tester Display
      Cancel Switch

      Powertrain > Stop and Start > Data List
      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      Cancel Switch Eco run cancel switch assembly signal ON/OFF

      ON: Eco run cancel switch assembly pressed

      OFF: Eco run cancel switch assembly not pressed

      		 -
      Result
      Result Proceed to
      GTS display changes when the cancel button is pressed A
      GTS display does not change even when the cancel button is pressed B

    B

    GO TO STOP AND START CANCEL SWITCH CIRCUIT

    A

  4. CHECK DTC OUTPUT


    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the GTS on.

    4. Perform a road test.

    5. Enter the following menus: Powertrain / Stop and Start / Trouble Codes.


      Powertrain > Stop and Start > Trouble Codes

    6. Read the DTCs.

      Result
      Result Proceed to
      DTCs are not output A
      CAN DTCs are output B

    A

    REPLACE ENGINE STOP AND START ECU Click here

    B

    GO TO CAN COMMUNICATION SYSTEM Click here

  5. CHECK DTC OUTPUT


    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the GTS on.

    4. Perform a road test.

    5. Enter the following menus: Powertrain / Stop and Start / Trouble Codes.


      Powertrain > Stop and Start > Trouble Codes

    6. Read the DTCs.

      Result
      Result Proceed to
      DTCs are not output A
      CAN DTCs are output B

    A

    REPLACE ENGINE STOP AND START ECU Click here

    B

    GO TO CAN COMMUNICATION SYSTEM Click here

  6. CHECK DTC OUTPUT


    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the GTS on.

    4. Perform a road test.

    5. Enter the following menus: Powertrain / Stop and Start / Trouble Codes.


      Powertrain > Stop and Start > Trouble Codes

    6. Read the DTCs.

      Result
      Result Proceed to
      DTCs are not output A
      CAN DTCs are output B

    A

    REPLACE ENGINE STOP AND START ECU Click here

    B

    GO TO CAN COMMUNICATION SYSTEM Click here

  7. CHECK PROBLEM SYMPTOMS


    1. Check the problem symptoms.

      Tech Tips


      • Check each symptom by checking the suspected areas in the table below.

      • By using the GTS and entering the following menus, the selected mode can be confirmed.

        Powertrain / Stop and Start / Data List / Stop & Start A/C Mode

      Result
      Problem Symptoms Trouble Area Proceed to
      Multi-information display screen does not change after pressing steering pad switch assembly

      • Steering pad switch assembly

      • Spiral cable with sensor sub-assembly

      • Combination meter assembly

      • Engine stop and start ECU

      • Wire harness or connector (steering pad switch assembly - combination meter assembly)

      • Wire harness or connector (engine stop and start ECU - combination meter assembly)

      		 A
      Multi-information display screen changes without pressing steering pad switch assembly

      • Steering pad switch assembly

      • Spiral cable with sensor sub-assembly

      • Wire harness or connector (steering pad switch assembly - combination meter assembly)

      		 B
      Multi-information display screen does not change but control mode changes Combination meter assembly C
      Multi-information display screen changes but control mode does not change

      • Air conditioning amplifier assembly

      • Wire harness or connector (engine stop and start ECU - air conditioning amplifier assembly)

      		 D
      Control mode returns to default mode after turning ignition switch to ON Engine stop and start ECU E

    B

    CHECK HARNESS AND CONNECTOR (SPIRAL CABLE WITH SENSOR SUB-ASSEMBLY - COMBINATION METER ASSEMBLY) Click here

    C

    GO TO METER / GAUGE SYSTEM Click here

    D

    CHECK DTC OUTPUT Click here

    E

    CHECK DTC OUTPUT Click here

    A

  8. CHECK OPERATION


    1. Using the steering pad switch assembly, check that all functions other than "Stop and Start A/c Mode" can be selected.

      Result
      Result Proceed to
      Only "Stop and Start A/C Mode" cannot be selected A
      No function can be selected using the steering pad switch assembly B

    B

    CHECK HARNESS AND CONNECTOR (SPIRAL CABLE WITH SENSOR SUB-ASSEMBLY - COMBINATION METER ASSEMBLY) Click here

    A

  9. CHECK DTC OUTPUT


    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the GTS on.

    4. Perform a road test.

    5. Enter the following menus: Powertrain / Stop and Start / Trouble Codes.


      Powertrain > Stop and Start > Trouble Codes

    6. Read the DTCs.

      Result
      Result Proceed to
      DTCs are not output A
      CAN DTCs are output B

    A

    REPLACE ENGINE STOP AND START ECU Click here

    B

    GO TO CAN COMMUNICATION SYSTEM Click here

  10. CHECK HARNESS AND CONNECTOR (SPIRAL CABLE WITH SENSOR SUB-ASSEMBLY - COMBINATION METER ASSEMBLY)


    1. Turn the ignition switch off.

    2. Disconnect the E6 spiral cable with sensor sub-assembly connector.

    3. Disconnect the E46 combination meter assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      E6-10 (+DP) - E46-28 (SW1) Always Below 1 Ω
      E6-10 (+DP) - Body ground Always 10 kΩ or higher
      E46-28 (SW1) - Body ground Always 10 kΩ or higher
      E6-11 (+DP2) - E46-33 (MSSL) Always Below 1 Ω
      E6-11 (+DP2) - Body ground Always 10 kΩ or higher
      E46-33 (MSSL) - Body ground Always 10 kΩ or higher
      E6-3 (EAU) - Body ground Always Below 1 Ω
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  11. INSPECT SPIRAL CABLE WITH SENSOR SUB-ASSEMBLY


    1. Inspect the spiral cable with sensor sub-assembly.

      Click here

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE SPIRAL CABLE WITH SENSOR SUB-ASSEMBLY Click here

    OK

  12. INSPECT STEERING PAD SWITCH ASSEMBLY


    1. Inspect the steering pad switch assembly.

      Click here

      Result
      Proceed to
      OK
      NG

    OK

    GO TO METER / GAUGE SYSTEM Click here

    NG

    REPLACE STEERING PAD SWITCH ASSEMBLY Click here

  13. CHECK HARNESS AND CONNECTOR (SPIRAL CABLE WITH SENSOR SUB-ASSEMBLY - COMBINATION METER ASSEMBLY)


    1. Turn the ignition switch off.

    2. Disconnect the E6 spiral cable with sensor sub-assembly connector.

    3. Disconnect the E46 combination meter assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      E6-10 (+DP) - E46-28 (SW1) Always Below 1 Ω
      E6-10 (+DP) - Body ground Always 10 kΩ or higher
      E46-28 (SW1) - Body ground Always 10 kΩ or higher
      E6-11 (+DP2) - E46-33 (MSSL) Always Below 1 Ω
      E6-11 (+DP2) - Body ground Always 10 kΩ or higher
      E46-33 (MSSL) - Body ground Always 10 kΩ or higher
      E6-3 (EAU) - Body ground Always Below 1 Ω
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  14. INSPECT SPIRAL CABLE WITH SENSOR SUB-ASSEMBLY


    1. Inspect the spiral cable with sensor sub-assembly.

      Click here

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE SPIRAL CABLE WITH SENSOR SUB-ASSEMBLY Click here

    OK

  15. INSPECT STEERING PAD SWITCH ASSEMBLY


    1. Inspect the steering pad switch assembly.

      Click here

      Result
      Proceed to
      OK
      NG

    OK

    GO TO METER / GAUGE SYSTEM Click here

    NG

    REPLACE STEERING PAD SWITCH ASSEMBLY Click here

  16. CHECK DTC OUTPUT


    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the GTS on.

    4. Perform a road test.

    5. Enter the following menus: Powertrain / Stop and Start / Trouble Codes.


      Powertrain > Stop and Start > Trouble Codes

    6. Read the DTCs.

      Result
      Result Proceed to
      DTCs are not output A
      CAN DTCs are output B

    A

    REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY Click here

    B

    GO TO CAN COMMUNICATION SYSTEM Click here

  17. CHECK DTC OUTPUT


    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the GTS on.

    4. Perform a road test.

    5. Enter the following menus: Powertrain / Stop and Start / Trouble Codes.


      Powertrain > Stop and Start > Trouble Codes

    6. Read the DTCs.

      Result
      Result Proceed to
      DTCs are not output A
      DTCs are output B

    A

    REPLACE ENGINE STOP AND START ECU Click here

    B

    GO TO DIAGNOSTIC TROUBLE CODE CHART Click here