HYBRID CONTROL SYSTEM Pattern Select Switch Eco Mode Circuit

DTC Code DTC Name
Pattern Select Switch Eco Mode Circuit

DESCRIPTION

When selecting ECO mode, the ECO mode switch (combination 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

A287791E34

PROCEDURE

  1. READ VALUE USING GTS (CAN BUS CHECK)

    Click here

    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
    B

    GO TO CAN COMMUNICATION SYSTEM

    for LHD:Click here

    for RHD:Click here

    A

  2. CHECK DTC OUTPUT (HEALTH CHECK)

    Click here

    Result

    Proceed to

    No DTCs are output.

    DTCs are output.
    DTCs are output.

    GO TO DTC CHART

    No DTCs are output.

  3. READ VALUE USING GTS (ECO MODE)

    1. Connect the GTS to the DLC3.

    2. Turn the power switch on (IG).

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

      Powertrain > Hybrid Control > Data List

      Tester Display

      ECO Mode

    4. Read the value displayed on the GTS.

      Powertrain > Hybrid Control > Data List

      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 GTS display changes according to the ECO mode switch (combination switch assembly) operation.

      A

      The GTS display does not change according to the ECO mode switch (combination switch assembly) operation.

      B
    A

    CHECK FOR INTERMITTENT PROBLEMS

    Click here

    B

  4. READ VALUE USING GTS (ECO SWITCH)

    1. Connect the GTS to the DLC3.

    2. Turn the power switch on (IG).

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

      Body Electrical > Air Conditioner > Data List

      Tester Display

      ECO Switch

    4. Read the value displayed on the GTS.

      Body Electrical > Air Conditioner > Data List

      Tester Display

      Measurement Item

      Range

      Normal Condition

      ECO Switch

      ECO mode switch (combination switch assembly) condition

      ON or OFF

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

      ECO mode switch (combination switch assembly) not pushed: OFF

      Result

      Result

      Proceed to

      The GTS display changes according to the ECO mode switch (combination switch assembly) operation.

      A

      The GTS display does not change according to the ECO mode switch (combination switch assembly) operation.

      B
    A

    REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY

    Click here

    B

  5. INSPECT ECO MODE SWITCH (COMBINATION SWITCH ASSEMBLY)

    1. Remove the ECO mode switch (combination switch assembly).

      Click here

    2. C344135C06

      *a

      Component without harness connected

      (ECO Mode Switch (Combination Switch Assembly))

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

      Standard Resistance

      Tester Connection

      Condition

      Specified Condition

      G191-4 (ECU) - G191-6 (MSW2)

      ECO mode switch (combination switch assembly) being pushed and held

      Below 10 Ω

      ECO mode switch (combination switch assembly) not pushed

      1 MΩ or higher

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

    Result

    Proceed to

    OK

    NG
    NG

    REPLACE ECO MODE SWITCH (COMBINATION SWITCH ASSEMBLY)

    Click here

    OK

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

    1. Disconnect the G191 ECO mode switch (combination switch assembly) connector.

    2. C344134C05

      *a

      Front view of wire harness connector

      (to ECO Mode Switch (Combination Switch Assembly))

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

      Standard Resistance

      Tester Connection

      Condition

      Specified Condition

      G191-6 (MSW2) - Body ground

      Always

      Below 1 Ω

    3. Reconnect the G191 ECO mode switch (combination switch assembly) connector.

    Result

    Proceed to

    OK

    NG
    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

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

    1. Disconnect the G81 air conditioning amplifier assembly connector.

      Click here

    2. Disconnect the G191 ECO mode switch (combination switch assembly) connector.

    3. C344133C02

      *a

      Front view of wire harness connector

      (to Air Conditioning Amplifier Assembly)

      *b

      Front view of wire harness connector

      (to ECO Mode Switch (Combination Switch Assembly))

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

      Standard Resistance

      Tester Connection

      Condition

      Specified Condition

      G81-24 (ECOS) - G191-4 (ECU)

      Always

      Below 1 Ω

      G81-24 (ECOS) or G191-4 (ECU) - Body ground

      Always

      10 kΩ or higher

    4. Reconnect the G191 ECO mode switch (combination switch assembly) connector.

    5. Reconnect the G81 air conditioning amplifier assembly connector.

    Result

    Proceed to

    OK

    NG
    OK

    REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY

    Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR