Dtc P0724 Brake Switch B Circuit High

Transmission. Camry. Acv40 Gsv40
U660E Automatic Transaxle. Camry. Acv40 Gsv40

DESCRIPTION

MONITOR DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

READ VALUE USING DATA LIST (STP SIGNAL)

INSPECT STOP LIGHT SWITCH ASSEMBLY

CHECK HARNESS AND CONNECTOR (STOP LIGHT SWITCH ASSEMBLY - TCM)

DTC P0724 Brake Switch "B" Circuit High


DESCRIPTION

The purpose of this circuit is to prevent the engine from stalling while driving in lock-up condition when brakes are suddenly applied.
When the brake pedal is depressed, this switch sends a signal to the TCM. Then the TCM cancels the operation of the lock-up clutch while braking is in progress.

DTC No.
DTC Detection Condition
Trouble Area
P0724
The stop light switch remains ON even when the vehicle is driven in a STOP (less than 3 km/h (2 mph)) and GO (30 km/h (19 mph) or more) fashion 5 times. (2-trip detection logic)
  1. Short in stop light switch signal circuit
  2. Stop light switch
  3. TCM

MONITOR DESCRIPTION

This DTC indicates that the stop light switch remains ON. When the stop light switch remains ON during "stop and go" driving, the TCM interprets this as a fault in the stop light switch, illuminates the MIL, and stores the DTC. The vehicle must stop (less than 3 km/h (2 mph)) and go (30 km/h (19 mph) or more) five times for two consecutive driving cycles in order to set this DTC.

WIRING DIAGRAM


Camry. Acv40 Gsv40.U660E Automatic Transaxle.Automatic Transaxle System. Dtc P0724 Brake Switch B Circuit High


INSPECTION PROCEDURE

1.READ VALUE USING DATA LIST (STP SIGNAL)
HINT:
According to the Data List displayed on the intelligent tester, you can read the value of switches, sensors, actuators and other items without removing any parts. Reading the Data List as the first step in troubleshooting is one method to save labor time.

  1. Turn the ignition switch off.

  1. Connect the intelligent tester to the DLC3.

  1. Turn the ignition switch on.

  1. Turn on the tester.

  1. Enter the following items: "Powertrain / ECT / Data List".

  1. According to the display on the tester, read "Data List".

    Standard:

    Item
    		Measurement Item/
    Range (display)
    		Normal Condition
    STOP LIGHT SW
    		Stop light switch status/
    ON or OFF
    1. Brake pedal is depressed: ON
    2. Brake pedal is released: OFF
    NOTICE:
    In the table above, the conditions listed under "Normal Condition" are reference conditions. Do not depend solely on these reference conditions when deciding whether a part is faulty.


OK
Go to step 3
NG


2.INSPECT STOP LIGHT SWITCH ASSEMBLY


    Camry. Acv40 Gsv40.U660E Automatic Transaxle.Automatic Transaxle System. Dtc P0724 Brake Switch B Circuit High

  1. Remove the stop light switch assembly.

  1. Measure the resistance according to the value(s) in the table below.

    Standard resistance:
    Switch Position
    		Tester Connection
    		Specified Condition
    Switch pin free
    		1 - 2
    		Below 1 Ω
    Switch pin pushed in
    		1 - 2
    		10 kΩ or higher
    Switch pin free
    		3 - 4
    		10 kΩ or higher
    Switch pin pushed in
    		3 - 4
    		Below 1 Ω


NG
REPLACE STOP LIGHT SWITCH ASSEMBLY
OK


3.CHECK HARNESS AND CONNECTOR (STOP LIGHT SWITCH ASSEMBLY - TCM)


    Camry. Acv40 Gsv40.U660E Automatic Transaxle.Automatic Transaxle System. Dtc P0724 Brake Switch B Circuit High

  1. Install the stop light switch assembly.

  1. Disconnect the TCM connector.

  1. Measure the voltage according to the value(s) in the table below when the brake pedal is depressed and released.

    Standard voltage:
    Condition
    		Tester Connection
    		Specified Condition
    Brake pedal is depressed
    		C56-12 (STP) - Body ground
    		10 to 14 V
    Brake pedal is released
    		C56-12 (STP) - Body ground
    		Below 1 V


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

REPLACE TCM