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de10: Service Code 51: Attempt to Generate Code 61
Steps _Key OFF, wait 10 seconds
_Disconnect vehicle harness from ECT sensor. Inspect for damaged pins, corrosion, loose wires, etc. Service as necessary
_Insert a jumper wire at the ECT sensor vehicle harness connector between ECT SIGNAL and SIGNAL RETURN
_Rerun Key ON, Engine OFF Self-Test
Result Is Code 61 present?
Direction YES

Replace ECT sensor. Remove jumper wire. Reconnect ECT sensor. Rerun Quick Test


Remove jumper wire.
GO to Continue

ECT Information:
ComponentEngine Coolant Temperature Sensor
DescriptionThe ECT sensor reports the engine coolant temperature to the EEC.

The ECT signal input is used by the EEC to:
Modify ignition timing
EGR flow
Air to fuel ratio
LocationThreaded into between Fuel Injectors 2 and 3
Wire ColorsLight Green with Yellow stripe
Black with White stripe