A750F AUTOMATIC TRANSMISSION: AUTOMATIC TRANSMISSION SYSTEM: Pattern Select Switch 2nd Start Mode Circuit; 2006 MY LX470 [05/2005

Last Modified: 4-30-2014	6.6 J	Doc ID: RM000001E4X000X
Model Year: 2006	Model: LX470	Prod Date Range: [05/2005 - ]
Title: A750F AUTOMATIC TRANSMISSION: AUTOMATIC TRANSMISSION SYSTEM: Pattern Select Switch 2nd Start Mode Circuit; 2006 MY LX470 [05/2005 - ]

Pattern Select Switch 2nd Start Mode Circuit

DESCRIPTION

When 2nd start mode is selected with the pattern select switch, the ECM controls the solenoid valves and the transmission starts from 2nd gear.

In the D position, the transmission automatically shifts up through 3rd to 5th as usual.

In the 2nd position, the transmission is held in 2nd gear.

HINT:

*: Pattern select switch (2nd start switch)

When the 2nd start switch is pushed, the switch contact is made and the 2nd mode is selected.

To cancel the 2nd start, push the 2nd start switch once again.

1.	INSPECT PATTERN SELECT SWITCH (2nd start mode)

(a) Disconnect the E5 pattern select switch connector.

(b) Measure the resistance of the switch.

Resistance:

Tester Connection	Switch Condition	Specified Condition
2 - 3	Press continuously 2nd switch	Below 1 Ω
2 - 3	Release 2nd switch	10 kΩ or higher

REPLACE PATTERN SELECT SWITCH

2.	CHECK WIRE HARNESS (PATTERN SELECT SWITCH - BODY GROUND)

(a) Disconnect the E5 pattern select switch connector.

(b) Measure the resistance of the wire harness side connector.

Resistance:

Tester Connection	Specified Condition
E9-27 (SNWI) - Body ground	Below 1 Ω

REPAIR OR REPLACE HARNESS AND CONNECTOR

PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOM TABLE