Automatic Transmission System (For 1Gr-Fe) L4 Position Switch Circuit

Drivetrain. Hilux. Tgn26, 36 Kun25, 26, 35, 36 Ggn25
A750F 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 - ECM)

AUTOMATIC TRANSMISSION SYSTEM (for 1GR-FE) - 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 ON. Then the ECM cancels operation of the lock-up clutch.

WIRING DIAGRAM


Hilux. Tgn26, 36 Kun25, 26, 35, 36 Ggn25.A750F Automatic Transmission Transaxle.Automatic Transmission System (For 1Gr-Fe).Automatic Transmission System (For 1Gr-Fe) 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.A750F Automatic Transmission Transaxle.Automatic Transmission System (For 1Gr-Fe).Automatic Transmission System (For 1Gr-Fe) L4 Position Switch Circuit

  1. Disconnect the 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 OR CONNECTOR
OK


2.INSPECT NO. 1 TRANSFER INDICATOR SWITCH (L4 POSITION SWITCH)
Hilux. Tgn26, 36 Kun25, 26, 35, 36 Ggn25.A750F Automatic Transmission Transaxle.Automatic Transmission System (For 1Gr-Fe).Automatic Transmission System (For 1Gr-Fe) 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
    		Pushed
    		Below 1 Ω
    1 - 2
    		Not pushed
    		10 kΩ or higher
    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 RM00000479C008X.html)
OK


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

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

  1. Disconnect the C131 ECM connector.

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    C131-13 (L4) - C29-1
    		Always
    		Below 1 Ω
    C131-13 (L4) - Body ground
    		Always
    		10 kΩ or higher
    C29-1 - Body ground
    		Always
    		10 kΩ or higher


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE (HILUX_TGN26 RM000000W730SBX.html)