HYBRID CONTROL SYSTEM Pattern Select Switch Eco Mode Circuit

DESCRIPTION

When selecting ECO mode, the ECO mode switch (eco switch assembly) operation signal is sent to the air conditioning amplifier assembly. Following this, ECO mode control is activated for the heater and air conditioning system.

WIRING DIAGRAM

A01I44AE38

INSPECTION PROCEDURE

PROCEDURE


  1. READ VALUE USING TECHSTREAM (CAN BUS CHECK)


    1. Connect the Techstream to the DLC3.

    2. Turn the power switch on (IG).

    3. Enter the following menus: System Select / CAN Bus Check.

      Result
      Result Proceed to
      All of the ECUs and sensors that are currently connected to the CAN communication system are displayed. A
      None of the ECUs and sensors that are currently connected to the CAN communication system are displayed, or some of them are not displayed. B

    4. Turn the power switch off.


    B

    GO TO CAN COMMUNICATION SYSTEM Click here

    A

  2. CHECK DTC OUTPUT (HEALTH CHECK)


    1. Connect the Techstream to the DLC3.

    2. Turn the power switch on (IG).

    3. Enter the following menus: System Select / Health Check.

    4. Check DTCs.

      Result
      Result Proceed to
      No DTCs are output. A
      DTCs are output. B

    5. Turn the power switch off.


    B

    GO TO DTC CHART

    A

  3. READ VALUE USING TECHSTREAM (ECO MODE)


    1. Connect the Techstream to the DLC3.

    2. Turn the power switch on (IG).

    3. Enter the following menus: Powertrain / Hybrid Control / Data List / ECO Mode.

    4. Read the value displayed on the Techstream.

      Tester Display Measurement Item/Range Normal Condition
      ECO Mode

      ECO mode transition availability/

      ON or OFF

      		 In ECO mode: ON
      Result
      Result Proceed to
      The Techstream display changes according to the ECO mode switch (eco switch assembly) operation. A
      The Techstream display does not changes according to the ECO mode switch (eco switch assembly) operation. B

    B

    READ VALUE USING TECHSTREAM (ECO SWITCH) Click here

    A

    CHECK FOR INTERMITTENT PROBLEMS Click here

  4. READ VALUE USING TECHSTREAM (ECO SWITCH)


    1. Connect the Techstream to the DLC3.

    2. Turn the power switch on (IG).

    3. Enter the following menus: Body Electrical / Air Conditioning / Data List / ECO Switch.

    4. Read the value displayed on the Techstream.

      Tester Display Measurement Item/Range Normal Condition
      ECO Switch

      ECO mode switch (eco switch assembly) condition/

      ON or OFF

      ECO mode switch (eco switch assembly) being pushed and held: ON

      ECO mode switch (eco switch assembly) not pushed: OFF
      Result
      Result Proceed to
      The Techstream display changes according to the ECO mode switch (eco switch assembly) operation. A
      The Techstream display does not changes according to the ECO mode switch (eco switch assembly) operation. B

    B

    INSPECT ECO MODE SWITCH (ECO SWITCH ASSEMBLY) Click here

    A

    REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY Click here

  5. INSPECT ECO MODE SWITCH (ECO SWITCH ASSEMBLY)


    1. Remove the ECO mode switch (eco switch assembly) Click here.

    2. A01I4RSE09
      Text in Illustration
      *a

      Component without harness connected

      (ECO Mode Switch (Eco Switch Assembly))

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      I49-4 (ECU) - I49-1 (E) ECO mode switch (eco switch assembly) being pushed and held Below 1 Ω
      ECO mode switch (eco switch assembly) not pushed 10 kΩ or higher

    3. Install the ECO mode switch (eco switch assembly).


    NG

    REPLACE ECO MODE SWITCH (ECO SWITCH ASSEMBLY) Click here

    OK

  6. CHECK HARNESS AND CONNECTOR (ECO MODE SWITCH (ECO SWITCH ASSEMBLY) - BODY GROUND)


    1. Disconnect the I49 ECO mode switch (eco switch assembly) connector.

    2. A01I2PYE04
      Text in Illustration
      *a

      Front view of wire harness connector

      (to ECO Mode Switch (Eco Switch Assembly))

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      I49-1 (E) - Body ground Always Below 1 Ω

    3. Reconnect the I49 ECO mode switch (eco switch assembly) connector.


    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  7. CHECK HARNESS AND CONNECTOR (AIR CONDITIONING AMPLIFIER ASSEMBLY - ECO MODE SWITCH (ECO SWITCH ASSEMBLY))


    1. Disconnect the I77 air conditioning amplifier assembly connector.

    2. Disconnect the I49 ECO mode switch (eco switch assembly) connector.

    3. A01I3FQE06
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Air Conditioning Amplifier Assembly)
      *b

      Front view of wire harness connector

      (to ECO Mode Switch (Eco Switch Assembly))

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      I77-4 (ECOS) - I49-4 (ECU) Always Below 1 Ω
      I77-4 (ECOS) or I49-4 (ECU) - Body ground Always 10 kΩ or higher

    4. Reconnect the I49 ECO mode switch (eco switch assembly) connector.

    5. Reconnect the I77 air conditioning amplifier assembly connector.


    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY Click here