Renault Coupes/Sedans/Wagons 1975-1985 Repair Guide

Integral Electronic Ignition



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Fig. Fig. 1 Ignition Control Module (ICM) for the Integral Electronic Ignition (IEI) system

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Fig. Fig. 2 Mounting location for the Manifold Absolute Pressure (MAP) sensor

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Fig. Fig. 3 Top Dead Center (TDC) sensor mounting location

The Integral Electronic Ignition (IEI) system uses an Ignition Control Module (ICM) to determine proper ignition timing and advance The ICM receives input signals from a possible three sources: a Top Dead Center (TDC) sensor, a Manifold Absolute Pressure (MAP) sensor (throttle body injection only), and a vacuum capsule mounted on the ICM The TDC sensor is mounted on the transaxle bell housing, and reads special trigger teeth on the flywheel There are 40 trigger teeth with a 2-tooth gap at 90 degrees before top dead center, and 90 degrees after top dead center The ICM uses these two gaps to determine crankshaft position and speed and, along with a vacuum sensor which determines engine load, fires the ignition coil at the proper time The rest of the ignition system is the same as the earlier systems; there is a coil, coil wire, distributor cap and rotor, and spark plug wires that deliver the electrical charge to the spark plug


There are no adjustable components on the IEI system. If the system is malfunctioning, first check all electrical connections and, if it continues to malfunction, refer to the testing procedures in . The only repair possible is component replacement.