Pattern Select Switch Eco Mode Circuit [09/2014 - ]: Procedure

See step  2

Result:  B

B 

GO TO CAN COMMUNICATION SYSTEM (HOW TO PROCEED WITH TROUBLESHOOTING) 

(See page. Refer to HOW TO PROCEED WITH TROUBLESHOOTING [09/2014 - 10/2015] Refer to HOW TO PROCEED WITH TROUBLESHOOTING [10/2015 - ] )

Result:  A

A 

See step  2

See step  3

Result:  B

B 

GO TO DTC CHART 

Result:  A

A 

See step  3

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

5. Turn the power switch off.

Result:  A

A 

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE 

(See page. Refer to PROBLEM SYMPTOMS TABLE [09/2014 - 10/2015] Refer to PROBLEM SYMPTOMS TABLE [10/2015 - ] )

Result:  B

B 

See step  4

1. Connect the Techstream to the DLC3.
2. Turn the power switch on (IG).
3. Enter the following menus: Body Electrical / Air Conditioner / Data List / ECO Switch.
4. Read the value displayed on the Techstream.

   Tester Display	Measurement Item/Range	Normal Condition
   ECO Switch	Combination switch assembly (ECO mode) condition/ ON or OFF	Combination switch assembly being pushed and held: ON Combination switch assembly not pushed: OFF

   Result

   Result	Proceed to
   The Techstream display changes according to the combination switch assembly (ECO mode) operation.	A
   The Techstream display does not change according to the combination switch assembly (ECO mode) operation.	B

5. Turn the power switch off.

Result:  A

A 

REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY 

(See page. Refer to REMOVAL [09/2014 - ] )

Result:  B

B 

See step  5

1. Remove the combination switch assembly (See page. Refer to REMOVAL [09/2014 - ] ).
2. Measure the resistance according to the value(s) in the table below.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Standard Resistance

   Tester Connection	Switch Condition	Specified Condition
   N59-8 (ECU) - N59-4 (GND)	Combination switch assembly (ECO mode) being pushed and held	Below 10 Ω
   	Combination switch assembly (ECO mode) not pushed	10 kΩ or higher

   TEXT IN ILLUSTRATION
   
   

   *a	Component without harness connected (Combination Switch Assembly)

3. Install the combination switch assembly.

Result:  NG

NG 

REPLACE COMBINATION SWITCH ASSEMBLY 

(See page. Refer to REMOVAL [09/2014 - ] )

Result:  OK

OK 

See step  6

See step  7

Result:  NG

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result:  OK

OK 

See step  7

1. Disconnect the connector from the air conditioning amplifier assembly.
2. Disconnect the connector from the combination switch assembly.
3. Measure the resistance according to the value(s) in the table below.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   N78-29 (ECOS) - N59-8 (ECU)	Always	Below 1 Ω
   N78-29 (ECOS) or N59-8 (ECU) - Body ground	Always	10 kΩ or higher

   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)

4. Connect the combination switch assembly connector.
5. Connect the air conditioning amplifier assembly connector.

Result:  OK

OK 

REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY 

(See page. Refer to REMOVAL [09/2014 - ] )

Result:  NG

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR