Drive Mode Switch Circuit [07/2015 - ]: Procedure

1. Check each symptom by checking the suspected areas in the table below.

   Result

   Result	Proceed to
   SPORT mode or NORMAL mode is abnormal.	A
   ECO mode is abnormal.	B

Result:  B

B 

GO TO AIR CONDITIONING SYSTEM 

(Refer to ECO Switch Circuit [07/2015 - ] )

Result:  A

A 

See step  2

1. Check for DTCs (Refer to DIAGNOSIS SYSTEM [07/2015 - 08/2016] Refer to DIAGNOSIS SYSTEM [08/2016 - ] for with Central Gateway ECU. Refer to DIAGNOSIS SYSTEM [07/2015 - 08/2016] Refer to DIAGNOSIS SYSTEM [08/2016 - ] for without Central Gateway ECU).
   RESULT
   
   

   Result	Proceed to
   DTCs are not output.	A
   DTCs are output (w/ Central Gateway ECU).	B
   DTCs are output (w/o Central Gateway ECU).	C

Result:  B

B 

GO TO CAN COMMUNICATION SYSTEM (w/ Central Gateway ECU) 

(Refer to HOW TO PROCEED WITH TROUBLESHOOTING [07/2015 - ] )

Result:  C

C 

GO TO CAN COMMUNICATION SYSTEM (w/o Central Gateway ECU) 

(Refer to HOW TO PROCEED WITH TROUBLESHOOTING [07/2015 - ] )

Result:  A

A 

See step  3

1. Turn the engine switch off.
2. Disconnect the H71 drive mode switch (integration control and panel assembly) connector.
3. Measure the resistance according to the value(s) in the table below.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Standard resistance

   Tester Connection	Specified Condition
   H71-5 (E) - Body ground	Below 1 Ω

   TEXT IN ILLUSTRATION
   
   

   *a	Front view of wire harness connector (to Drive Mode Switch (Integration Control and Panel Assembly))

Result:  NG

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result:  OK

OK 

See step  4

1. Inspect drive mode switch (integration control and panel assembly) (Refer to INSPECTION [07/2015 - ] ).

   OK

   Drive mode switch (integration control and panel assembly) is normal.

Result:  NG

NG 

REPLACE INTEGRATION CONTROL AND PANEL ASSEMBLY 

(Refer to PROCEDURE - Step 3 )

Result:  OK

OK 

See step  5

1. Reconnect the connector of the drive mode switch (integration control and panel assembly).
2. Disconnect the A22 ECM connector.
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
   A22-11 (SPCN) - Body ground	SPORT mode switch being turned and held at SPORT position (SPORT mode)	10 kΩ or higher
   ↑	NORMAL mode switch being pushed and held (NORMAL mode)	Below 1 Ω
   A22-24 (PWMS) - Body ground	SPORT mode switch not turned (NORMAL mode)	10 kΩ or higher
   ↑	SPORT mode switch being turned and held at SPORT position (SPORT mode)	Below 1 Ω

   TEXT IN ILLUSTRATION
   
   

   *a	Front view of wire harness connector (to ECM)

Result:  OK

OK 

REPLACE ECM 

(Refer to REMOVAL [07/2015 - ] )

Result:  NG

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR