Inspection Procedure

WARNING: This page is about a different variant/trim than selected.

Check transmission wire.
PREPARATION:

Disconnect the transmission wire connector.

CHECK:

Measure resistance between ST of transmission wire connector and body ground.

OK:
1. Resistance: 11 to 15 Ω at 20°C (68°F)
1. NG: Go to 3
2. OK: Go to next step
Measure resistance between terminals ST of ECM and body ground.

Fig 1: Identifying Terminal ST Of ECM
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

PREPARATION:
1. Connect the transmission wire connector.
2. Disconnect the ECM connector.
CHECK:

Measure resistance between terminals ST of ECM connector and body ground.

OK:
1. Resistance: 11 to 15 Ω at 20°C (68°F)
1. NG: Repair or replace the harness or connector ( HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION PROCEDURE ).
2. OK: Replace the ECM.
Check shift solenoid valve ST operation.
PREPARATION:
1. Jack up the vehicle.
2. Remove the oil pan.
3. Remove the shift solenoid valve ST.
CHECK:
1. Measure resistance between terminal ST of shift solenoid valve and solenoid body.
2. Connect positive (+) lead to terminal of solenoid connector, negative (-) lead to solenoid body.
OK:
1. (a) Resistance: 11 to 15 Ω at 20°C (68°F)
2. (b) The solenoid makes an operating noise.
Fig 2: Checking Shift Solenoid Valve ST Operation
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
1. NG: Replace the shift solenoid valve ST.
2. OK: Repair or replace the transmission wire ( ATF TEMPERATURE SENSOR ).