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

1. 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: 

A 

REPLACE ECM 

Refer to REMOVAL [09/2024 - ]

Result: 

B 

See step  2

1. Inspect the combination switch assembly.

   Refer to INSPECTION [09/2024 - ]

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPLACE COMBINATION SWITCH ASSEMBLY (DRIVE MODE SELECT SWITCH) 

Refer to REMOVAL [09/2024 - ]

Result: 

OK 

See step  3

1. Disconnect the I177 combination switch assembly connector.
2. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   I177-5 (E) - Body ground	Always	Below 1 Ω

3. Connect the I177 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  4

1. Disconnect the A139 ECM connector.
2. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   A139-31 (DMS+) - Body ground	Drive mode select switch pushed forward	Below 50 Ω
   A139-31 (DMS+) - Body ground	Drive mode select switch in neutral position	10 kΩ or higher
   A139-51 (DMS-) - Body ground	Drive mode select switch pulled rearward	Below 50 Ω
   A139-51 (DMS-) - Body ground	Drive mode select switch in neutral position	10 kΩ or higher

3. Connect the A139 ECM connector.

   Result

   Proceed to
   OK
   NG

Result: 

OK 

REPLACE ECM 

Refer to REMOVAL [09/2024 - ]

Result: 

NG 

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