Inspection Procedure

WARNING: This page is about a different car, the 2008 Lexus IS 350. However, it is still accessible from the selected car via links, so may be relevant.

HINT:

The shift solenoid valve S1 is turned on/off normally when the shift lever is in the D position:

GEAR SHIFT POSITIONS

ECM command gearshift	1st	2nd	3rd	4th	5th	6th
Shift solenoid valve S1	OFF	ON	ON	ON	ON	ON

INSPECT TRANSMISSION WIRE (S1)

Disconnect the transmission wire connector from the transmission.

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

Standard resistance

TESTER CONNECTION SPECIFIED CONDITION CHART

Tester Connection	Specified Condition 20°C (68°F)
8 - Body ground	11 to 15Ω

Fig 1: Identifying Terminals Of E47 Transmission Wire Connector

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: Go to step 3

OK: Go to Next Step

CHECK HARNESS AND CONNECTOR (TRANSMISSION WIRE - ECM)

Connect the transmission connector to the transmission.
Disconnect the connector from the ECM.

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

Standard resistance

TESTER CONNECTION SPECIFIED CONDITION CHART

Tester Connection	Specified Condition 20°C (68°F)
E4-19 (S1) - Body ground	11 to 15Ω

Fig 2: Identifying Terminals Of E4 ECM Connector

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR

OK: REPLACE ECM

INSPECT SHIFT SOLENOID VALVE S1

Remove the shift solenoid valve S1.

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

Standard resistance

TESTER CONNECTION SPECIFIED CONDITION CHART

Tester Connection	Specified Condition 20°C (68°F)
Solenoid Connector (S1) - Solenoid Body(S1)	11 to 15 Ω

Connect positive (+) lead to the terminal of the solenoid connector, and the negative (-) lead to the solenoid body.
OK: The solenoid makes an operating sound.

Fig 3: Identifying Shift Solenoid Valve S1

NG: REPLACE SHIFT SOLENOID VALVE S1

OK: REPAIR OR REPLACE TRANSMISSION WIRE