Toyota 2GR-FE Manual page 314

ES–158
NG
6 CHECK HARNESS AND CONNECTOR (ENGINE COOLANT TEMPERATURE SENSOR -
ECM)
Wire Harness Side Front View:
ECT Sensor Connector
C4
ES
ECM Connector
C55
OK
REPLACE ECM (See page ES-518)
2GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEM
(a) Disconnect the C4 ECT sensor connector.
(b) Disconnect the C55 ECM connector.
(c) Measure the resistance between the terminals.
Standard resistance
Tester Connection
THW (C55-79) or C4-2 - Body ground
(d) Reconnect the ECT sensor connector.
(e) Reconnect the ECM connector.
NG
THW
A135019E02
REPAIR OR REPLACE HARNESS OR
CONNECTOR
Specified Condition
10 kΩ or higher