Steering Pad Switch Circuit [08/2020 - 08/2021]: 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: System Select / Can Bus Check.

   Refer to DIAGNOSIS SYSTEM [08/2020 - 08/2021]

   CAN Bus Check 

   Result

   Result	Proceed to
   All of the ECUs and sensors that are currently connected to the CAN communication system are displayed	A
   None of the ECUs and sensors that are currently connected to the CAN communication system are displayed, or some of them are not displayed	B

Result: 

B 

GO TO CAN COMMUNICATION SYSTEM. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [04/2018 - ] 

Result: 

A 

See step  2

1. Connect the Techstream to the DLC3.
2. Turn the engine switch on (IG).
3. Turn the Techstream on.
4. Enter the following menus: System Select / Health Check.
5. Check DTCs.
6. Turn the engine switch off.

   Result

   Result	Proceed to
   No DTCs are output.	A
   DTCs are output.	B

Result: 

B 

GO TO DTC CHART 

Result: 

A 

See step  3

1. Remove the steering pad switch assembly.

   Refer to REMOVAL [04/2018 - 08/2021]

2. Inspect the steering pad switch assembly.

   Refer to INSPECTION [04/2018 - ]

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPLACE STEERING PAD SWITCH ASSEMBLY. Refer to  COMPONENTS [04/2018 - ] 

Result: 

OK 

See step  4

1. Remove the spiral cable sub-assembly.

   Refer to REMOVAL [08/2020 - 08/2021]

2. Inspect the spiral cable sub-assembly.

   Refer to INSPECTION [04/2018 - ]

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPLACE SPIRAL CABLE SUB-ASSEMBLY. Refer to  COMPONENTS [04/2018 - ] 

Result: 

OK 

See step  5

1. Disconnect the G39 driving support ECU assembly connector.
2. Disconnect the A64 ECM connector. (for A25A-FKS)
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   FOR 2GR-FKS
   
   

   Tester Connection	Condition	Specified Condition
   G17-6 (DIST) - G39-23 (SPSW)	Always	Below 1 Ω
   G17-2 (ECC) - Body ground	Always	Below 1 Ω
   G17-6 (DIST) or G39-23 (SPSW) - Body ground	Always	10 kΩ or higher

   FOR A25A-FKS
   
   

   Tester Connection	Condition	Specified Condition
   G17-6 (DIST) - G39-23 (SPSW)	Always	Below 1 Ω
   G17-2 (ECC) - A64-28 (ECCS)	Always	Below 1 Ω
   G17-6 (DIST) or G39-23 (SPSW) - Body ground	Always	10 kΩ or higher
   G17-2 (ECC) or A64-28 (ECCS) - Body ground	Always	10 kΩ or higher

   Result

   Proceed to
   OK
   NG

Result: 

OK 

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to  PROBLEM SYMPTOMS TABLE [04/2018 - 08/2021] 

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR