Drive Mode Select Switch Circuit [11/2021 - ]: 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. (w/o Adaptive Variable Suspension System)	A
   SPORT mode, SPORT S+, CUSTOM mode or NORMAL mode is abnormal. (w/ Adaptive Variable Suspension System)
   ECO mode is abnormal.	B

Result: 

B 

GO TO AIR CONDITIONING SYSTEM. Refer to  ECO Switch Circuit [11/2021 - ] 

Result: 

A 

See step  2

1. Check for DTCs.

   Refer to HOW TO PROCEED WITH TROUBLESHOOTING [11/2021 - ]

   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 [11/2021 - ] 

Result: 

A 

See step  3

1. Turn the ignition switch off.
2. Disconnect the D33 drive mode select switch (combination switch assembly) connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   D33-6 (GND) - 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 the drive mode select switch (combination switch assembly).

   for UA81F: Refer to INSPECTION [11/2021 - ]

   for UB80E / UB80F: Refer to INSPECTION [11/2021 - ]

   OK

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

   Result

   Result	Proceed to
   OK (for A25A-FKS)	A
   OK (for T24A-FTS)	B
   NG	C

Result: 

B 

See step  6

Result: 

C 

REPLACE DRIVE MODE SELECT SWITCH (COMBINATION SWITCH ASSEMBLY). Refer to  REMOVAL [11/2021 - ] 

Result: 

A 

See step  5

1. Disconnect the A20 ECM connectors.
2. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   A20-12 (PWMS) - D33-3 (SPSW)	Always	Below 1 Ω
   A20-13 (SPCN) - D33-2 (NORM)	Always	Below 1 Ω
   A20-12 (PWMS) or D33-3 (SPSW) - Body ground	Always	10 kΩ or higher
   A20-13 (SPCN) or D33-2 (NORM) - Body ground	Always	10 kΩ or higher

   Result

   Proceed to
   OK
   NG

Result: 

OK 

REPLACE ECM. Refer to  REMOVAL [11/2021 - ] 

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

1. Disconnect the A19 ECM connectors.
2. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   A19-28 (PWMS) - D33-3 (SPSW)	Always	Below 1 Ω
   A19-29 (SPCN) - D33-2 (NORM)	Always	Below 1 Ω
   A19-28 (PWMS) or D33-3 (SPSW) - Body ground	Always	10 kΩ or higher
   A19-29 (SPCN) or D33-2 (NORM) - Body ground	Always	10 kΩ or higher

   Result

   Proceed to
   OK
   NG

Result: 

OK 

REPLACE ECM. Refer to  REMOVAL [11/2021 - ] 

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR