Steering Pad Switch Circuit [10/2018 - ]: Procedure

1. Connect the Techstream to the DLC3.
2. Turn the power switch on (IG).
3. Turn the Techstream on.
4. Enter the following menus: Powertrain / Cruise Control / Data List.
5. Read the Data List according to the display on the Techstream.

   Powertrain > Cruise Control > Data List 

   Tester Display	Measurement Item	Range	Normal Condition	Diagnostic Note
   Cancel Switch	CANCEL switch status	ON or OFF	ON: CANCEL switch pushed OFF: CANCEL switch not pushed	-
   -SET Switch	-SET switch status	ON or OFF	ON: -SET switch pushed OFF: -SET switch not pushed	-
   +RES Switch	+RES switch status	ON or OFF	ON: +RES switch pushed OFF: +RES switch not pushed	-
   Cruise Main Switch Operation Condition	Cruise control main switch status	ON or OFF	ON: Cruise control main switch pushed OFF: Cruise control main switch not pushed	-

   Powertrain > Cruise Control > Data List 

   Tester Display
   Cancel Switch
   -SET Switch
   +RES Switch
   Cruise Main Switch Operation Condition

   OK

   The value of each Data List item changes according to the operation of the steering pad switch assembly.

   Result

   Proceed to
   OK
   NG

Result: 

OK 

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to  PROBLEM SYMPTOMS TABLE [10/2018 - 07/2022]  Refer to  PROBLEM SYMPTOMS TABLE [07/2022 - ] 

Result: 

NG 

See step  2

1. Remove the steering pad switch assembly.

   Refer to REMOVAL [10/2018 - 07/2022] Refer to REMOVAL [07/2022 - ]

2. Inspect the steering pad switch assembly.

   Refer to INSPECTION [10/2018 - ]

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPLACE STEERING PAD SWITCH ASSEMBLY. Refer to  COMPONENTS [10/2018 - ] 

Result: 

OK 

See step  3

1. Remove the spiral cable sub-assembly.

   Refer to REMOVAL [10/2018 - 07/2022] Refer to REMOVAL [07/2022 - ]

2. Inspect the spiral cable sub-assembly.

   Refer to INSPECTION [10/2018 - ]

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPLACE SPIRAL CABLE SUB-ASSEMBLY. Refer to  COMPONENTS [10/2018 - ] 

Result: 

OK 

See step  4

1. Disconnect the F20 spiral cable sub-assembly connector.
2. Disconnect the F59 hybrid vehicle control ECU connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   F20-13 (CCS) - F59-14 (CCS)	Always	Below 1 Ω
   F20-2 (ECC) - Body ground	Always	Below 1 Ω
   F20-13 (CCS) or F59-14 (CCS) - Body ground	Always	10 kΩ or higher

4. Connect the F59 hybrid vehicle control ECU connector.
5. Connect the F20 spiral cable sub-assembly connector.

   Result

   Proceed to
   OK
   NG

Result: 

OK 

REPLACE HYBRID VEHICLE CONTROL ECU. Refer to  COMPONENTS [10/2018 - ] 

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR