AIR CONDITIONING SYSTEM ECO Switch Circuit

DESCRIPTION

When the ECO mode switch (integration control and panel sub-assembly) is turned on, the air conditioning amplifier assembly receives an ECO mode switch (integration control and panel sub-assembly) ON signal and controls the air conditioning to enhance fuel efficiency.

WIRING DIAGRAM

A00403VE14

INSPECTION PROCEDURE

PROCEDURE


  1. READ VALUE USING GTS


    1. Connect the GTS to the DLC3.

    2. Turn the power switch on (IG).

    3. Turn the GTS on.

    4. Enter the following menus: Body Electrical / Air Conditioner / Data Test.

    5. Check the values by referring to the table below.

      Air Conditioner
      Tester Display Measurement Item/Range Control Range Diagnostic Note
      ECO Switch

      ECO mode switch (integration control and panel sub-assembly) /

      OFF or ON

      		 ECO mode switch (integration control and panel sub-assembly) being pushed and held: ON -
      ECO mode switch (integration control and panel sub-assembly) not pushed: OFF
      OK
      ECO mode switch (integration control and panel sub-assembly) condition displayed on the GTS changes with the actual switch operation.

    NG

    INSPECT ECO MODE SWITCH (INTEGRATION CONTROL AND PANEL SUB-ASSEMBLY) Click here

    OK

    PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE Click here

  2. INSPECT ECO MODE SWITCH (INTEGRATION CONTROL AND PANEL SUB-ASSEMBLY)


    1. Remove the ECO mode switch (integration control and panel sub-assembly) Click here.

    2. A0042TBE06
      Text in Illustration
      *a

      Component without harness connected

      (ECO Mode Switch (Integration Control and Panel Sub-assembly))

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      7 (ECU) - 5 (E) ECO mode switch (integration control and panel sub-assembly) being pushed and held Below 1 Ω
      ECO mode switch (integration control and panel sub-assembly) not pushed 10 kΩ or higher

    NG

    REPLACE ECO MODE SWITCH (INTEGRATION CONTROL AND PANEL SUB-ASSEMBLY) Click here

    OK

  3. CHECK HARNESS AND CONNECTOR (ECO MODE SWITCH (INTEGRATION CONTROL AND PANEL) - AIR CONDITIONING AMPLIFIER ASSEMBLY)


    1. Disconnect the L14 air conditioning amplifier assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      L14-9 (ECOS) - L64-7 (ECU) Always Below 1 Ω
      L14-9 (ECOS) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  4. CHECK HARNESS AND CONNECTOR (ECO MODE SWITCH (INTEGRATION CONTROL AND PANEL SUB-ASSEMBLY) - BODY GROUND)


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

      Standard Resistance
      Tester Connection Condition Specified Condition
      L64-5 (E) - Body ground Always Below 1 Ω

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY Click here