LEMON Manuals: Even more car manuals for everyone
Home >> Land Rover >> 2022 >> Defender 90 S >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 7 (Electronic Engine Controls - V8 S/C 5.0L Petrol -- Defender/L663) >> Electronic Engine Controls - V8 S/C 5.0L Petrol (G2796672) >> Description And Operation >> Electronic Engine Controls - V8 S/C 5.0L Petrol (G2796673) >> Description >> Engine Coolant Temperature Sensor

Engine Coolant Temperature Sensor

WARNING: This page is about a different variant/trim than selected.
G15244467Courtesy of JAGUAR LAND ROVER NORTH AMERICA, LLC
ITEM DESCRIPTION
1 ECT sensor - Radiator outlet
2 ECT sensor - Heater manifold

The ECT sensors are Negative Temperature Coefficient (NTC) resistors that allow the PCM  to monitor the engine coolant temperature.

There are 2 identical ECT sensors installed, which are identified as ECT sensor 1 and ECT sensor 2. Each sensor is installed with a twist-lock and latch mechanism, and is sealed with an o-ring. A 2-pin electrical connector provides the interface between the sensor and the engine harness.

Engine Coolant Temperature Sensor 1 

The ECT sensor 1 is installed in the heater manifold, at the rear of the bank 1 cylinder head. The input from this sensor is used in calibration tables and by other systems.

If there is an ECT 1 fault, the PCM  adopts an estimated coolant temperature. On the second consecutive trip with an ECT sensor 1 fault, the PCM  illuminates the Malfunction Indicator Lamp (MIL).

Engine Coolant Temperature Sensor 2 

The ECT sensor 2 is installed in the lower hose connector which attaches to the bottom of the thermostat. The input from this sensor is used for On-Board Diagnostic (OBD) diagnostics and, in conjunction with the input from ECT sensor 1, to confirm that the thermostat is functional.

If there is an ECT sensor 2 fault, the PCM  illuminates the MIL  on the second consecutive trip.

scientia non olet · About LEMON Manuals