DTC P0180: EFT SENSOR CIRCUIT Jaguar S-type I

1. Turn ignition off. Remove plastic engine cover. Disconnect Engine Fuel Temperature (EFT) sensor harness connector. (Scheme 9)or (Scheme 10). Measure resistance between EFT sensor terminals, with EFT sensor at specified temperature. See «TEMPERATURE SENSOR RESISTANCE»(ref-11918-S04817308582000120400000) table. If resistance is as specified, go to next step. If resistance is not as specified, replace EFT sensor and retest system.
2. Check continuity between ground and EFT sensor harness connector Brown/Blue wire. If continuity exists, go to next step. If continuity does not exist, repair open ground circuit and retest system. See WIRING DIAGRAMS article.
3. Disconnect PCM harness connectors. see scheme 5 Check continuity of White/Blue wire between EFT sensor harness connector and PCM harness connector PI-1 terminal No. 47. see scheme 6 If continuity exists, go to next step. If continuity does not exist, repair open in White/Blue wire and retest system.
4. Check continuity between ground and EFT sensor harness connector White/Blue wire. If continuity exists, repair short to ground and retest system. If continuity does not exist, go to next step.
5. Disconnect the following harness connectors: Both front heated oxygen sensors. Engine oil temperature sensor. Cylinder head temperature sensor (V6 models). Engine coolant temperature sensor (V8 models). Both camshaft position sensors. Injector pressure sensor. Ttion sensor. Measure resistance between ground and EFT sensor harness connector Brown/Blue wire. If continuity exists, repair short to ground and retest system. If continuity does not exist, replace PCM and retest system.

Scheme 9

Scheme 10