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Home >> Peugeot >> 1987 >> 505 L4-1971cc XN >> Repair and Diagnosis >> Powertrain Management >> Computers and Control Systems >> Engine Control Module >> Testing and Inspection >> ECU Preparation
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ECU Preparation


NOTE: The testing of the different terminals is done by unplugging the connector from the ECU. UNDER NO CIRCUMSTANCES, should the test leads of the volt/ohmmeter be inserted into the prongs of the connector's terminals. It is therefore necessary to remove the connector protective cover, and to make all the electrical checks on the wire side of the terminals. Once the protective cover is removed, the pin numbers 1 to 35, will be visible.




Preliminary conditions:
Voltage checks - battery fully charged.
Ground checks - battery disconnected.




Fig. 16 ECU connector:





1. Open glove compartment lid all the way - push in on both sides to clear the built in stops.
2. Remove the connector held in place by the clip.
3. Remove screw (3) and slide connector cover (4) forward, Fig. 16.
NOTE: When reassembling connector do not forget the rubber seal.