Drivetrain. Hilux. Tgn26, 36 Kun25, 26, 35, 36 Ggn25
A750F Automatic Transmission Transaxle. Hilux. Tgn26, 36 Kun25, 26, 35, 36 Ggn25
INSPECT STOP LIGHT SWITCH ASSEMBLY
CHECK HARNESS AND CONNECTOR (TCM - BATTERY)
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 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 | 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). |
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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
INSPECTION PROCEDURE
| DATA LIST |
- HINT:
- Using the GTS to read the Data List allows the values or states of switches, sensors, actuators and other items to be read without removing any parts. This non-intrusive inspection can be very useful because intermittent conditions or signals may be discovered before parts or wiring is disturbed. Reading the Data List information early in troubleshooting is one way to save diagnostic time.
- NOTICE:
- In the table below, 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.
Warm up the engine.
Turn the ignition switch off.
Connect the GTS to the DLC3.
Turn the ignition switch to ON.
Turn the GTS on.
Enter the following menus: Powertrain / ECT / Data List.
According to the display on the GTS, read the Data List.
| Tester Display | Measurement Item/Range | Normal Condition | Diagnostic Note |
| Stop Light Switch | Stop light switch status/ ON or OFF |
| - |
| 1.INSPECT STOP LIGHT SWITCH ASSEMBLY |
Remove the stop light switch (HILUX_TGN26 RM0000018VF00UX.html).
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Measure the resistance according to the value(s) in the table below.
- 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
Text in Illustration *1 Pin *a Component without harness connected
(Stop Light Switch)*b Not pushed *c Pushed
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| OK | |
| 2.CHECK HARNESS AND CONNECTOR (TCM - BATTERY) |
Disconnect the TCM connector.
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Measure the voltage according to the value(s) in the table below.
- Standard Voltage:
Tester Connection Condition Specified Condition G41-14 (STP) - Body ground Brake pedal depressed 11 to 14 V G41-14 (STP) - Body ground Brake pedal released Below 1 V
Text in Illustration *a Rear view of wire harness connector
(to TCM)
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| OK | ||
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