Drive Mode Select Switch Circuit [09/2022 - 09/2024]: Procedure

1. Connect the Techstream to the DLC3.
2. Turn the engine switch on (IG).
3. Turn the Techstream on.
4. Enter the following menus: Powertrain / Engine / Data List.
5. According to the display on the Techstream, read the Data List.

   Powertrain > Engine > Data List 

   Tester Display	Measurement Item	Range	Normal Condition	Diagnostic Note
   Drive Mode Select Switch (DMS+)	Drive mode select switch (combination switch assembly) status	ON or OFF	ON: Drive mode select switch (combination switch assembly) pushed forward OFF: Drive mode select switch (combination switch assembly) in neutral position	-
   Drive Mode Select Switch (DMS-)	Drive mode select switch (combination switch assembly) status	ON or OFF	ON: Drive mode select switch (combination switch assembly) pulled rearward OFF: Drive mode select switch (combination switch assembly) in neutral position	-

   Powertrain > Engine > Data List 

   Tester Display
   Drive Mode Select Switch (DMS+)
   Drive Mode Select Switch (DMS-)

   Result

   Result	Proceed to
   Data List value is normal	A
   Data List value is not normal	B

Result: 

B 

See step  3

Result: 

A 

See step  2

1. Replace the ECM.

   Refer to COMPONENTS [09/2022 - 11/2022] , or refer to COMPONENTS [11/2022 - ]

   Result

   Proceed to
   NEXT

Result: 

NEXT 

PERFORM INITIALIZATION 

Refer to INITIALIZATION [09/2022 - 11/2022] , or refer to INITIALIZATION [11/2022 - 09/2024]

1. Remove the combination switch assembly.

   Refer to REMOVAL [06/2018 - ]

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *a	Component without harness connected (Combination Switch Assembly (Drive Mode Select Switch))

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

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   7 (SEL) - 5 (E)	Drive mode select switch pushed forward	Below 50 Ω
   7 (SEL) - 5 (E)	Drive mode select switch in neutral position	10 kΩ or higher
   6 (E) - 5 (E)	Drive mode select switch pulled rearward	Below 50 Ω
   6 (E) - 5 (E)	Drive mode select switch in neutral position	10 kΩ or higher

3. Install the combination switch assembly.

   Refer to INSTALLATION [06/2018 - ]

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPLACE COMBINATION SWITCH ASSEMBLY (DRIVE MODE SELECT SWITCH) 

Refer to COMPONENTS [06/2018 - ]

Result: 

OK 

See step  4

1. Disconnect the I61 combination switch assembly connector.
2. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   I61-5 (E) - Body ground	Always	Below 1 Ω

3. Connect the I61 combination switch assembly connector.

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR (COMBINATION SWITCH ASSEMBLY - BODY GROUND) 

Result: 

OK 

See step  5

1. Disconnect the A47 ECM connector.
2. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   A47-31 (YZK) - Body ground	Drive mode select switch pushed forward	Below 50 Ω
   A47-31 (YZK) - Body ground	Drive mode select switch in neutral position	10 kΩ or higher
   A47-41 (DMS-) - Body ground	Drive mode select switch pulled rearward	Below 50 Ω
   A47-41 (DMS-) - Body ground	Drive mode select switch in neutral position	10 kΩ or higher

3. Connect the A47 ECM connector.

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR (COMBINATION SWITCH ASSEMBLY - ECM) 

Result: 

OK 

See step  6

1. Replace the ECM.

   Refer to COMPONENTS [09/2022 - 11/2022] , or refer to COMPONENTS [11/2022 - ]

   Result

   Proceed to
   NEXT

Result: 

NEXT 

PERFORM INITIALIZATION 

Refer to INITIALIZATION [09/2022 - 11/2022] , or refer to INITIALIZATION [11/2022 - 09/2024]