HYBRID CONTROL SYSTEM > Pattern Select Switch Eco Mode Circuit

for Preparation Click here


DESCRIPTION

When selecting ECO mode, the switch 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

Refer to the wiring diagram for Pattern select switch SPORT mode circuit (Click here).

A248228E02


INSPECTION PROCEDURE

1.READ VALUE USING INTELLIGENT TESTER (CAN BUS CHECK)

  1. Connect the intelligent tester to the DLC3.

  1. Turn the power switch on (IG).

  1. 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

  1. Turn the power switch off.



B
GO TO CAN COMMUNICATION SYSTEM (Click here)
A


2.CHECK DTC OUTPUT (ALL CODES)

  1. Connect the intelligent tester to the DLC3.

  1. Turn the power switch on (IG).

  1. Enter the following menus: System Select / Utility / All Codes.

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

  1. Turn the power switch off.



B
GO TO DTC CHART
A


3.PERFORM ACTIVE TEST USING INTELLIGENT TESTER (INDICAT. ECO MODE)

  1. Connect the intelligent tester to the DLC3.

  1. Turn the power switch on (IG).

  1. Enter the following menus: Body / Combination Meter / Active Test / Indicat. ECO Mode.

  1. Perform the "Indicat. ECO MODE" Active Test.

    OK:
    The ECO MODE indicator lamp comes on or blinks.

  1. Turn the power switch off.



NG
REPLACE COMBINATION METER ASSEMBLY (Click here)
OK


4.READ VALUE USING INTELLIGENT TESTER (ECO MODE)

  1. Connect the intelligent tester to the DLC3.

  1. Turn the power switch on (IG).

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

  1. Read the value displayed on the intelligent tester.

    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 intelligent tester display changes according to the mode switch (ECO mode) operation.
    		A
    The intelligent tester display does not changes according to the mode switch (ECO mode) operation.
    		B



B
Go to step 5
A

CHECK FOR INTERMITTENT PROBLEMS (Click here)  

5.READ VALUE USING INTELLIGENT TESTER (ECO SWITCH)

  1. Connect the intelligent tester to the DLC3.

  1. Turn the power switch on (IG).

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

  1. Read the value displayed on the intelligent tester.

    Tester Display
    		Measurement Item/Range
    		Normal Condition
    ECO Switch
    		Mode switch (ECO mode) condition/
    ON or OFF
    		Mode switch being turned and held at ECO position: ON
    Mode switch not turned: OFF

    Result:
    Result
    		Proceed to
    The intelligent tester display changes according to the mode switch (ECO mode) operation.
    		A
    The intelligent tester display does not changes according to the mode switch (ECO mode) operation.
    		B



B
Go to step 6
A

REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY (Click here)  

6.CHECK COMBINATION SWITCH ASSEMBLY (ECO MODE / NORMAL MODE)

  1. Remove the combination switch assembly.



    A237666E08

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    H72-5 (ECO) - H72-13 (E)
    		Mode switch being turned and held at ECO position
    		Below 1 Ω
    Mode switch not turned
    		10 kΩ or higher
    H72-4 (NORM) - H72-14 (E)
    		Mode switch being pushed and held
    		Below 1 Ω
    Mode switch not pushed
    		10 kΩ or higher

Text in Illustration 
*a
Component without harness connected
(Combination Switch Assembly)

  1. Install the combination switch assembly.



NG
REPLACE COMBINATION SWITCH ASSEMBLY (Click here)
OK


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

  1. Disconnect connector H85 from the air conditioning amplifier assembly.

  1. Disconnect connector H72 from the combination switch assembly.



    A248765E02

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    H85-15 (ECON) - H72-5 (ECO)
    		Always
    		Below 1 Ω
    H85-15 (ECON) or H72-5 (ECO) - Body ground
    		Always
    		10 kΩ or higher
    H85-35 (SG-4) - H72-13 (E)
    		Always
    		Below 1 Ω

Text in Illustration 
*a
Front view of wire harness connector
(to Air Conditioning Amplifier Assembly)
*b
Front view of wire harness connector
(to Combination Switch Assembly)

  1. Connect the combination switch assembly connector.

  1. Connect the air conditioning amplifier assembly connector.



NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


8.CHECK HARNESS AND CONNECTOR (COMBINATION SWITCH ASSEMBLY - BODY GROUND)

  1. Disconnect connector H72 from the combination switch assembly.



    A237667E02

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    H72-14 (E) - Body ground
    		Always
    		Below 1 Ω

Text in Illustration 
*a
Front view of wire harness connector
(to Combination Switch Assembly)

  1. Connect the combination switch assembly connector.



NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


9.CHECK HARNESS AND CONNECTOR (ECM - COMBINATION SWITCH ASSEMBLY)

  1. Disconnect connector A60 from the ECM.

  1. Disconnect connector H72 from the combination switch assembly.



    A248764E03

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    A60-30 (NE01) - H72-4 (NORM)
    		Always
    		Below 1 Ω
    A60-30 (NE01) or H72-4 (NORM) - Body ground
    		Always
    		10 kΩ or higher

Text in Illustration 
*a
Front view of wire harness connector
(to ECM)
*b
Front view of wire harness connector
(to Combination Switch Assembly)

  1. Connect the combination switch assembly connector.

  1. Connect the ECM connector.



NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY (Click here)