Automatic Transmission System L4 Position Switch Circuit

Drivetrain. Hilux. Tgn26, 36 Kun25, 26, 35, 36 Ggn25
A340F Automatic Transmission Transaxle. Hilux. Tgn26, 36 Kun25, 26, 35, 36 Ggn25

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

CHECK HARNESS AND CONNECTOR (NO. 1 TRANSFER INDICATOR SWITCH - BODY GROUND)

INSPECT NO. 1 TRANSFER INDICATOR SWITCH (L4 POSITION SWITCH)

CHECK HARNESS AND CONNECTOR (NO. 1 TRANSFER INDICATOR SWITCH - TCM)

AUTOMATIC TRANSMISSION SYSTEM - L4 Position Switch Circuit


DESCRIPTION

The No. 1 transfer indicator switch (L4 position switch) detects the gear position of the transfer shift lever. Moving the transfer shift lever to L4 turns the L4 position switch is on. Then the TCM cancels operation of the lock-up clutch.

WIRING DIAGRAM


Hilux. Tgn26, 36 Kun25, 26, 35, 36 Ggn25.A340F Automatic Transmission Transaxle.Automatic Transmission System.Automatic Transmission System L4 Position Switch Circuit


INSPECTION PROCEDURE

1.CHECK HARNESS AND CONNECTOR (NO. 1 TRANSFER INDICATOR SWITCH - BODY GROUND)


    Hilux. Tgn26, 36 Kun25, 26, 35, 36 Ggn25.A340F Automatic Transmission Transaxle.Automatic Transmission System.Automatic Transmission System L4 Position Switch Circuit

  1. Disconnect the C29 No. 1 transfer indicator switch connector.

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    C29-2 - Body ground
    		Always
    		Below 1 Ω
    Text in Illustration
    *a
    		Front view of wire harness connector:
    (to No. 1 Transfer Indicator Switch)


NG
REPAIR OR REPLACE HARNESS AND CONNECTOR
OK


2.INSPECT NO. 1 TRANSFER INDICATOR SWITCH (L4 POSITION SWITCH)


    Hilux. Tgn26, 36 Kun25, 26, 35, 36 Ggn25.A340F Automatic Transmission Transaxle.Automatic Transmission System.Automatic Transmission System L4 Position Switch Circuit

  1. Remove the No. 1 transfer indicator switch.

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

    Standard Resistance:
    Tester Connection
    		Switch Condition
    		Specified Condition
    1 - 2
    		Not pushed
    		10 kΩ or higher
    1 - 2
    		Pushed
    		Below 1 Ω
    Text in Illustration
    *a
    		Component without harness connected
    (No. 1 transfer indicator switch)
    *b
    		Pushed
    *c
    		Not pushed


NG
REPLACE NO. 1 TRANSFER INDICATOR SWITCH (HILUX_TGN26 RM00000479C00JX.html)
OK


3.CHECK HARNESS AND CONNECTOR (NO. 1 TRANSFER INDICATOR SWITCH - TCM)

  1. Disconnect the C29 No. 1 transfer indicator switch connector.

  1. Disconnect the G40 TCM connector.

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    G40-15 (L4) - C29-1
    		Always
    		Below 1 Ω
    G40-15 (L4) or C29-1 Body ground
    		Always
    		10 kΩ or higher


NG
REPAIR OR REPLACE HARNESS AND CONNECTOR
OK

REPLACE TCM (HILUX_TGN26 RM000004ROZ00CX.html)