Automatic Transmission System (For 1Ur-Fe) Pattern Select Switch 2Nd Start Mode Circuit

Drivetrain. Land Cruiser. Urj200, 202 Grj200 Vdj200
Ab60F Automatic Transmission Transaxle. Land Cruiser. Urj200, 202 Grj200 Vdj200

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

DRIVING TEST

INSPECT PATTERN SELECT (2ND) SWITCH

CHECK HARNESS AND CONNECTOR (PATTERN SELECT (2ND) SWITCH - BODY GROUND)

CHECK HARNESS AND CONNECTOR (PATTERN SELECT (2ND) SWITCH - ECM)

AUTOMATIC TRANSMISSION SYSTEM (for 1UR-FE) - Pattern Select Switch 2nd Start Mode Circuit


DESCRIPTION

When 2nd mode is selected with the pattern select (2ND) switch, the ECM controls the solenoid valves and the transmission starts from 2nd gear.
The 2nd mode is the system that operates the throttle motor to control engine output to reduce skidding of the driving wheels, and guarantee takeoff acceleration, driving straightness and turning stability.
When the shift lever is in D, the transmission automatically shifts up through 3rd to 6th as usual.

WIRING DIAGRAM

Refer to Pattern Select Switch Power Mode Circuit (Click here).

INSPECTION PROCEDURE

When the pattern select (2ND) switch is pushed, switch contact is made and 2nd mode is selected. To cancel 2nd mode, push the pattern select (2ND) switch once again.
HINT:
2nd mode is automatically canceled when the engine switch is turned off.
1.DRIVING TEST
HINT:
The driving test should be performed on a paved road (nonskid road).

  1. Start the engine.

  1. Turn the 2ND switch off (normal drive mode).

  1. Confirm vehicle response by driving from a parked position to fully depressing the accelerator pedal.

  1. Turn the 2ND switch on and perform the same check as above.
    When driving the vehicle with the 2ND switch on and off, check that there is a difference in acceleration.

    OK:
    There is a difference in acceleration.


NG
Go to step 2
OK

PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE (Click here)

2.INSPECT PATTERN SELECT (2ND) SWITCH


    Land Cruiser. Urj200, 202 Grj200 Vdj200.Ab60F Automatic Transmission Transaxle.Automatic Transmission System (For 1Ur-Fe).Automatic Transmission System (For 1Ur-Fe) Pattern Select Switch 2Nd Start Mode Circuit

  1. Remove the suspension control switch (Click here).

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

    Standard Resistance:
    w/ CRAWL
    Tester Connection
    		Switch Condition
    		Specified Condition
    4 (2ND) - 16 (E)
    		Pattern select (2nd) switch continuously pressed
    		Below 1 Ω
    4 (2ND) - 16 (E)
    		Pattern select (2nd) switch released
    		10 kΩ or higher
    w/o CRAWL
    Tester Connection
    		Switch Condition
    		Specified Condition
    17 (2ND) - 20 (E)
    		Pattern select (2nd) switch continuously pressed
    		Below 1 Ω
    17 (2ND) - 20 (E)
    		Pattern select (2nd) switch released
    		10 kΩ or higher
    Text in Illustration
    A
    		w/ CRAWL
    B
    		w/o CRAWL
    *a
    		Component without harness connected
    (Suspension Control Switch)


NG
REPLACE PATTERN SELECT (2ND) SWITCH (SUSPENSION CONTROL SWITCH) (Click here)
OK


3.CHECK HARNESS AND CONNECTOR (PATTERN SELECT (2ND) SWITCH - BODY GROUND)


    Land Cruiser. Urj200, 202 Grj200 Vdj200.Ab60F Automatic Transmission Transaxle.Automatic Transmission System (For 1Ur-Fe).Automatic Transmission System (For 1Ur-Fe) Pattern Select Switch 2Nd Start Mode Circuit

  1. Disconnect the suspension control switch connector.

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

    Standard Resistance:
    w/ CRAWL
    Tester Connection
    		Condition
    		Specified Condition
    V4-16 (E) - Body ground
    		Always
    		Below 1 Ω
    w/o CRAWL
    Tester Connection
    		Condition
    		Specified Condition
    V4-20 (E) - Body ground
    		Always
    		Below 1 Ω
    Text in Illustration
    A
    		w/ CRAWL
    B
    		w/o CRAWL
    *a
    		Front view of wire harness connector
    (to Suspension Control Switch)


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


4.CHECK HARNESS AND CONNECTOR (PATTERN SELECT (2ND) SWITCH - ECM)
Land Cruiser. Urj200, 202 Grj200 Vdj200.Ab60F Automatic Transmission Transaxle.Automatic Transmission System (For 1Ur-Fe).Automatic Transmission System (For 1Ur-Fe) Pattern Select Switch 2Nd Start Mode Circuit

  1. Disconnect the ECM connector.

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

    Standard Resistance:
    for LHD
    Tester Connection
    		Switch Condition
    		Specified Condition
    A38-4 (SNWI) - Body ground
    		Pattern select (2ND) switch continuously pressed
    		Below 1 Ω
    A38-4 (SNWI) - Body ground
    		Pattern select (2ND) switch released
    		10 kΩ or higher
    for RHD
    Tester Connection
    		Switch Condition
    		Specified Condition
    A52-4 (SNWI) - Body ground
    		Pattern select (2ND) switch continuously pressed
    		Below 1 Ω
    A52-4 (SNWI) - Body ground
    		Pattern select (2ND) switch released
    		10 kΩ or higher
Text in Illustration
*1
for LHD
*2
for RHD
*a
Front view of wire harness connector
(to ECM)


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE (Click here)