HYBRID CONTROL SYSTEM Pattern Select Switch Eco Mode Circuit

DESCRIPTION

When selecting ECO mode, the mode switch (integration control & panel 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

PROCEDURE

1. READ VALUE USING GTS (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. Connect the GTS to the DLC3.

   2. Turn the power switch on (IG).

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

      
      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 for LHD: Click here GO TO CAN COMMUNICATION SYSTEM for RHD: Click here

   A

2. CHECK DTC OUTPUT (HEALTH CHECK)

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

   
   

   1. Connect the GTS to the DLC3.

   2. Turn the power switch on (IG).

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

   4. Check for DTCs.

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

   5. Turn the power switch off.

   
   

   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 integration control & panel assembly operation. A The GTS display does not change according to the integration control & panel 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	Integration control & panel assembly condition	ON or OFF	Integration control & panel assembly being turned and held at ECO position: ON Integration control & panel assembly not turned: OFF

      Result
      Result Proceed to The GTS display changes according to the integration control & panel assembly operation. A The GTS display does not change according to the integration control & panel assembly operation. B

   
   

   A

   REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY Click here

   B

5. INSPECT INTEGRATION CONTROL & PANEL ASSEMBLY

   
   

   1. Remove the integration control & panel assembly.

      Click here

   2. 

      *a	Component without harness connected (Integration Control & Panel Assembly)

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

      Standard Resistance
      Tester Connection Condition Specified Condition I66-9 (ECU) - I66-1 (GND) Integration control & panel assembly being turned and held at ECO position Below 10 Ω Integration control & panel assembly not turned 10 kΩ or higher

   3. Install the integration control & panel assembly.

      Result
      Proceed to OK NG

   
   

   NG

   REPLACE INTEGRATION CONTROL & PANEL ASSEMBLY Click here

   OK

6. CHECK HARNESS AND CONNECTOR (INTEGRATION CONTROL & PANEL ASSEMBLY - BODY GROUND)

   Result
   Proceed to OK NG

   
   

   1. Disconnect the I66 integration control & panel assembly connector.

   2. 

      *a	Front view of wire harness connector (to Integration Control & Panel Assembly)

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

      Standard Resistance
      Tester Connection Condition Specified Condition I66-1 (GND) - Body ground Always Below 1 Ω

   3. Reconnect the I66 integration control & panel assembly connector.

      Result
      Proceed to OK NG

   
   

   NG

   REPAIR OR REPLACE HARNESS OR CONNECTOR

   OK

7. CHECK HARNESS AND CONNECTOR (AIR CONDITIONING AMPLIFIER ASSEMBLY - INTEGRATION CONTROL & PANEL ASSEMBLY)

   
   

   1. Disconnect the I50 air conditioning amplifier assembly connector.

      Click here

   2. Disconnect the I66 integration control & panel assembly connector.

   3. 

      *a	Front view of wire harness connector (to Air Conditioning Amplifier Assembly)
      *b	Front view of wire harness connector (to Integration Control & Panel Assembly)

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

      Standard Resistance
      Tester Connection Condition Specified Condition I50-4 (ECOS) - I66-9 (ECU) Always Below 1 Ω I50-4 (ECOS) or I66-9 (ECU) - Body ground Always 10 kΩ or higher

   4. Reconnect the I66 integration control & panel assembly connector.

   5. Reconnect the I50 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