Dtc P0724/95 Brake Switch B Circuit High


DESCRIPTION

MONITOR DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

READ VALUE USING DATA LIST (STP SIGNAL)

INSPECT STOP LIGHT SWITCH

CHECK HARNESS AND CONNECTOR (TCM - BATTERY)

DTC P0724/95 Brake Switch "B" Circuit High


DESCRIPTION

The purpose of this circuit is to prevent the engine from stalling while driving in the lock-up condition when the 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 Code
DTC Detection Condition
Trouble Area
P0724/95
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) pattern 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. Then the MIL illuminates and the TCM stores the DTC. The vehicle must stop (less than 3 km/h (2 mph)) and go (30 km/h (19 mph) or more) 5 times for 2 driving cycles in order for the DTC to be stored.

WIRING DIAGRAM


Toyota Fortuner. Ggn50, 60 Kun51, 61 Tgn51 Lan50.A340F Automatic Transmission.Automatic Transmission System. Dtc P0724/95 Brake Switch B Circuit High


INSPECTION PROCEDURE

1.READ VALUE USING DATA LIST (STP SIGNAL)
HINT:
Using the Data List of the intelligent tester allows switch, sensor, actuator and other item values to be read without removing any parts. Reading the Data List early in troubleshooting is one way to save time.

  1. Warm up the engine.

  1. Turn the ignition switch off.

  1. Connect the intelligent tester to the DLC3.

  1. Turn the ignition switch to ON and push the tester main switch on.

  1. Enter the following menus: Powertrain / ECT / Data List.

  1. Follow the instructions on the tester and read the Data List.


ECT
Tester Display
Measurement Item/Range
Normal Condition
Diagnostic Note
Stop Light Switch
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 values listed under "Normal Condition" are reference values. Do not depend solely on these reference values when deciding whether a part is faulty or not.


OK
Go to step 3
NG


2.INSPECT STOP LIGHT SWITCH


    Toyota Fortuner. Ggn50, 60 Kun51, 61 Tgn51 Lan50.A340F Automatic Transmission.Automatic Transmission System. Dtc P0724/95 Brake Switch B Circuit High

  1. Remove the S14 stop light switch.

  1. Measure the resistance of the switch.

    Standard Resistance:
    Tester Connection
    		Switch Condition
    		Specified Condition
    1 - 2
    		Pin pushed
    (pedal released)
    		10 kΩ or higher
    3 - 4
    		Pin not pushed
    (pedal depressed)
    		10 kΩ or higher
    1 - 2
    		Pin not pushed
    (pedal depressed)
    		Below 1 Ω
    3 - 4
    		Pin pushed
    (pedal released)
    		Below 1 Ω


NG
REPLACE STOP LIGHT SWITCH
OK


3.CHECK HARNESS AND CONNECTOR (TCM - BATTERY)


    Toyota Fortuner. Ggn50, 60 Kun51, 61 Tgn51 Lan50.A340F Automatic Transmission.Automatic Transmission System. Dtc P0724/95 Brake Switch B Circuit High

  1. Measure the voltage of the wire harness side connector.

    Standard Voltage:
    Tester Connection
    		Condition
    		Specified Condition
    T37-14 (STP) - Body ground
    		Brake pedal is depressed
    		11 to 14 V
    T37-14 (STP) - Body ground
    		Brake pedal is released
    		Below 1 V


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

REPLACE TCM