Automatic Transmission System (For 2Tr-Fe) Stop Light Switch Circuit

Drivetrain. Hilux. Tgn26, 36 Kun25, 26, 35, 36 Ggn25
A343E Automatic Transmission Transaxle. Hilux. Tgn26, 36 Kun25, 26, 35, 36 Ggn25

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

INSPECT STOP LIGHT SWITCH ASSEMBLY

CHECK HARNESS AND CONNECTOR (BATTERY - ECM)

AUTOMATIC TRANSMISSION SYSTEM (for 2TR-FE) - Stop Light Switch Circuit


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 signals to the ECM. Then the ECM cancels the operation of the lock-up clutch during braking.

WIRING DIAGRAM


Hilux. Tgn26, 36 Kun25, 26, 35, 36 Ggn25.A343E Automatic Transmission Transaxle.Automatic Transmission System (For 2Tr-Fe).Automatic Transmission System (For 2Tr-Fe) Stop Light Switch Circuit


INSPECTION PROCEDURE


DATA LIST
HINT:
Using the intelligent tester 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.

  1. Warm up the engine.

  2. Turn the ignition switch off.

  3. Connect the intelligent tester to the DLC3.

  4. Turn the ignition switch to ON.

  5. Turn the intelligent tester on.

  6. Enter the following menus: Powertrain / Engine and ECT / Data List.

  7. According to the display on the intelligent tester, 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 depressed: ON
    2. Brake pedal released: OFF
    		-
1.INSPECT STOP LIGHT SWITCH ASSEMBLY


    Hilux. Tgn26, 36 Kun25, 26, 35, 36 Ggn25.A343E Automatic Transmission Transaxle.Automatic Transmission System (For 2Tr-Fe).Automatic Transmission System (For 2Tr-Fe) Stop Light Switch Circuit

  1. Remove the stop light switch assembly (HILUX_TGN26 RM0000018VF00UX.html).

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

    Standard Resistance:
    Tester Connection
    		Switch Condition
    		Specified Condition
    1 - 2
    		Pin not pushed
    		Below 1 Ω
    3 - 4
    		Pin pushed
    		Below 1 Ω
    1 - 2
    		Pin pushed
    		10 kΩ or higher
    3 - 4
    		Pin not pushed
    		10 kΩ or higher
    Text in Illustration
    *1
    		Pin
    *a
    		Component without harness connected
    (Stop Light Switch Assembly)
    *b
    		Not pushed
    *c
    		Pushed


NG
REPLACE STOP LIGHT SWITCH ASSEMBLY (HILUX_TGN26 RM0000018VF00UX.html)
OK


2.CHECK HARNESS AND CONNECTOR (BATTERY - ECM)


    Hilux. Tgn26, 36 Kun25, 26, 35, 36 Ggn25.A343E Automatic Transmission Transaxle.Automatic Transmission System (For 2Tr-Fe).Automatic Transmission System (For 2Tr-Fe) Stop Light Switch Circuit

  1. Disconnect the ECM connector.

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

    Standard Voltage:
    Tester Connection
    		Condition
    		Specified Condition
    G88-4 (STP) - Body ground
    		Brake pedal depressed
    		11 to 14 V
    G88-4 (STP) - Body ground
    		Brake pedal released
    		Below 1 V
    Text in Illustration
    *a
    		Rear view of wire harness connector
    (to ECM)


NG
REPAIR OR REPLACE HARNESS AND CONNECTOR
OK

REPLACE ECM (HILUX_TGN26 RM000000VW202TX.html)