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Engine sensors
Engine coolant temperature (ECT) sensor
Checking - Fig. 15

Technical Data Multi-plug colour Temperature 0°C 10°C 20°C 40°C 60°C 80°C 100°C 5750-6200 3530-4100 2350-2670 1085-1230 540-615 292-326 165-190 Green Resistance

Ensure ignition switched OFF. Disconnect ECT sensor multi-plug. Relieve residual pressure in cooling system. Remove ECT sensor from engine. Immerse ECT sensor probe in coolant of specified temperature. Check resistance between ECT sensor terminals. ECT sensor may be checked in situ if engine temperature and resistance readings are compared.

Engine speed (RPM) sensor
Checking operation - Fig. 16

Technical Data Terminals 1&2 Condition Engine cranking 4-9 V Voltage

NOTE: Disconnect injector multi-plugs before cranking tests, to avoid damage to catalytic converter(s). Ensure ignition switched OFF. Disconnect RPM sensor multi-plug. Briefly crank engine. Check voltage between RPM sensor terminals.
Manufacturer: Peugeot Engine code: XU7JP4 (LFY) Tuned for: R-Cat Model: 406 1,8 16V Output: 81 (112) 5500 Year: 1995-02 © Autodata Limited 2004 14/03/2008 V5.500-

Checking earth connection - Fig. 17

Technical Data Terminals 3 & earth Zero Resistance

Ensure ignition switched OFF. Disconnect RPM sensor multi-plug. Check resistance between harness multi-plug terminal and earth.

Knock sensor (KS)
Checking supply voltage - Fig. 18

Technical Data Multi-plug colour Terminals 1 & earth 2,5 V Green Voltage

Ensure ignition switched OFF. Disconnect KS multi-plug. Switch ignition ON. Check voltage between harness multi-plug terminal and earth.

Checking

Technical Data Tightening torque 20 Nm

Ensure ignition switched OFF. Disconnect KS multi-plug. Remove KS. Ensure cylinder block and KS mating faces are free from corrosion and clean. Refit KS. Tighten fixing to specified torque.

Manufacturer: Peugeot Engine code: XU7JP4 (LFY) Tuned for: R-Cat

Model: 406 1,8 16V Output: 81 (112) 5500 Year: 1995-02

© Autodata Limited 2004 14/03/2008 V5.500-

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Manufacturer: Peugeot Engine code: XU7JP4 (LFY) Tuned for: R-Cat

Model: 406 1,8 16V Output: 81 (112) 5500 Year: 1995-02

© Autodata Limited 2004 14/03/2008 V5.500-