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de91: Continuous Memory Code 51: Check ECT Sensor
Steps _Enter Key On Engine Off Continuous Monitor mode. Refer to Appendix in Section 16
_Observe VOM or STAR LED for indication of a fault while performing the following:
_Lightly tap on ECT sensor (simulate road shock)
_Wiggle ECT connector
Result Is a fault indicated?
Direction YES

Disconnect and inspect connectors. If connector and terminals are good, replace ECT sensor. Clear Continuous Memory code 51. Refer to Appendix in Section 16. Rerun Quick Test.

NO

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
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