DTC P0724: Brake Switch "B" Circuit High [11/2021 - ]: Procedure

1. Turn the engine switch off.
2. Connect the Techstream to the DLC3.
3. Turn the engine switch on (IG).
4. Turn the Techstream on.
5. Enter the following menus: Powertrain / ECT / Data List / Stop Light Switch.
6. Read the Data List according to the display on the Techstream.

   Powertrain > ECT > Data List 

   Tester Display	Measurement Item	Range	Normal Condition	Diagnostic Note
   Stop Light Switch	Stop light switch status	ON or OFF	Brake pedal is ON: Depressed OFF: Released	-

   Powertrain > ECT > Data List 

   Tester Display
   Stop Light Switch

   Result

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

Result: 

A 

SYMPTOM SIMULATION AND DTC CHECK. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [11/2021 - 09/2022]  , or refer to  HOW TO PROCEED WITH TROUBLESHOOTING [09/2022 - ] 

Result: 

B 

See step  2

1. Check the stop light switch assembly installation.

   Refer to INSTALLATION [04/2013 - ]

   OK

   Stop light switch assembly is installed correctly.

   Result

   Proceed to
   OK
   NG

Result: 

NG 

SETTING CORRECTLY. Refer to  INSTALLATION [04/2013 - ] 

Result: 

OK 

See step  3

1. Disconnect the A56 stop light switch assembly connector.
2. Disconnect the A118 TCM connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   A56-2 (L) - A118-23 (STP)	Always	Below 1 Ω
   A56-2 (L) or A118-23 (STP) - Body ground	Always	10 kΩ or higher

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR (STOP LIGHT SWITCH ASSEMBLY - TCM) 

Result: 

OK 

See step  4

1. Inspect the stop light switch assembly.

   Refer to ON-VEHICLE INSPECTION [04/2013 - ]

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPLACE STOP LIGHT SWITCH ASSEMBLY. Refer to  COMPONENTS [09/2020 - ] 

Result: 

OK 

See step  5

1. Replace the TCM.

   Refer to COMPONENTS [11/2021 - ]

   Result

   Proceed to
   NEXT

Result: 

NEXT 

PERFORM A/T CODE REGISTRATION. Refer to  REGISTRATION [11/2021 - ]