Drive Mode Select Switch Circuit [04/2013 - 08/2015]: Procedure

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

   Result

   Result	Proceed to
   SPORT, SPORT S/S+ mode or NORMAL mode is abnormal.	A
   ECO mode is abnormal.	B

Result: 

B 

GO TO AIR CONDITIONING SYSTEM. Refer to  ECO Switch Circuit [04/2013 - 10/2016] 

Result: 

A 

See step  2

1. Check for DTCs.

   Refer to DIAGNOSIS SYSTEM [04/2013 - 06/2014] , or refer to DIAGNOSIS SYSTEM [06/2014 - 08/2015]

   Result

   Result	Proceed to
   CAN communication system DTCs are not output.	A
   CAN communication system DTCs are output.	B

Result: 

B 

GO TO CAN COMMUNICATION SYSTEM. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [04/2013 - 10/2016] 

Result: 

A 

See step  3

1. Turn the engine switch off.
2. Disconnect the K81 drive mode select switch (combination switch assembly) connector.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *a	Front view of wire harness connector (to Drive mode select switch (combination switch assembly))

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

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   K81-16 (E) - Body ground	Always	Below 1 Ω

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

See step  4

1. Inspect drive mode select switch (combination switch assembly).

   Refer to PROCEDURE - Step 1

   OK

   Drive mode select switch (combination switch assembly) is normal.

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPLACE COMBINATION SWITCH ASSEMBLY. Refer to  REMOVAL [04/2013 - 09/2020] 

Result: 

OK 

See step  5

1. Reconnect the K81 drive mode select switch (combination switch assembly) connector.
2. Disconnect the A76 and A77 ECM connectors.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *A	w/ Adaptive Variable Suspension System
   *B	w/o Adaptive Variable Suspension System
   *a	Rear view of wire harness connector (to ECM)

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

   Standard Resistance

   W/ ADAPTIVE VARIABLE SUSPENSION SYSTEM
   
   

   Tester Connection	Condition	Specified Condition
   A76-16 (SPSW) - Body ground	SPORT mode switch being turned and held	Below 50 Ω
   A76-16 (SPSW) - Body ground	SPORT mode switch not turned	10 kΩ or higher
   A77-25 (SPCN) - Body ground	NORMAL mode switch being pushed and held	Below 50 Ω
   A77-25 (SPCN) - Body ground	NORMAL mode switch not pushed	10 kΩ or higher

   W/O ADAPTIVE VARIABLE SUSPENSION SYSTEM
   
   

   Tester Connection	Condition	Specified Condition
   A77-23 (PWR) - Body ground	SPORT mode switch being turned and held	Below 50 Ω
   A77-23 (PWR) - Body ground	SPORT mode switch not turned	10 kΩ or higher
   A77-25 (SPCN) - Body ground	NORMAL mode switch being pushed and held	Below 50 Ω
   A77-25 (SPCN) - Body ground	NORMAL mode switch not pushed	10 kΩ or higher

   Result

   Proceed to
   OK
   NG

Result: 

OK 

REPLACE ECM 

for 2GR-FSE: Refer to REMOVAL [04/2013 - 10/2017]

for 4GR-FSE: Refer to REMOVAL [04/2013 - 08/2015]

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR