Ac60F Automatic Transmission Transaxle. Automatic Transmission System (For 1Gr-Fe) Pattern Select Switch 2Nd Start Mode Circuit

INSPECT PATTERN SELECT (2ND) SWITCH ASSEMBLY

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

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

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

DESCRIPTION

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

HINT:

The pattern select (2ND) switch is a momentary-type switch.
In order to cancel 2nd start mode, push the pattern select (2ND) switch again or turn the engine switch off.

WIRING DIAGRAM

Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155.Ac60F Automatic Transmission Transaxle.Automatic Transmission System (For 1Gr-Fe).Automatic Transmission System (For 1Gr-Fe) Pattern Select Switch 2Nd Start Mode Circuit

INSPECTION PROCEDURE

1.INSPECT PATTERN SELECT (2ND) SWITCH ASSEMBLY

Remove the pattern select (2ND) switch assembly (LandCruiser RM0000046J800OX_02_0019.html).

Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection
Switch Condition
Specified Condition
1 (E) - 4 (2ND)
Pattern select (2ND) switch pushed
Below 1 Ω
1 (E) - 4 (2ND)
Pattern select (2ND) switch not pushed
10 kΩ or higher
Text in Illustration
*1
Pattern Select (2ND) Switch Assembly

Text in Illustration
*1	Pattern Select (2ND) Switch Assembly

REPLACE PATTERN SELECT (2ND) SWITCH ASSEMBLY (LandCruiser RM0000046J800OX_02_0019.html)

OK

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

Disconnect the pattern select (2ND) switch connector.

Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection
Condition
Specified Condition
G159-1 (E) - Body ground
Always
Below 1 Ω
Text in Illustration
*a
Front view of wire harness connector
(to Pattern Select (2ND) Switch Assembly)

Text in Illustration
*a	Front view of wire harness connector (to Pattern Select (2ND) Switch Assembly)

REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

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

Disconnect the ECM connector.

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

Standard Resistance:

Tester Connection	Switch Condition	Specified Condition
G55-19 (SNWI) - Body ground	Pattern select (2ND) switch pushed	Below 1 Ω
G55-19 (SNWI) - Body ground	Pattern select (2ND) switch not pushed	10 kΩ or higher

Text in Illustration
*a	Rear view of wire harness connector (to ECM)

REPAIR OR REPLACE HARNESS OR CONNECTOR

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE (LandCruiser RM000000W7313FX.html)

Tester Connection	Condition	Specified Condition
G159-1 (E) - Body ground	Always	Below 1 Ω