Index Chrysler Chrysler Town & Country/Voyager, Dodge Caravan, Plymouth Voyager - service repair manual 1992 year
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large slots, one for each cylinder. The outer set contains The outer set of slots on the rotating disk represents 2 degrees of crankshaft rotation. Up to 1200 engine The outer set of slots contains a 10 degree flat spot. This area is not slotted (Fig. 5). The flat spot tells the As each slot on the timing disk passes between the diodes, the beam from the light emitting diode is During cranking, the controller cannot determine crankshaft position until the 10 degree flat spot on the Since the disk rotates at half crankshaft speed, it may take 2 engine revolutions during cranking for the MANIFOLD ABSOLUTE PRESSURE (MAP) The engine controller supplies 5 volts to the MAP sensor. The Map sensor converts intake manifold pres- During cranking, before the engine starts running, the engine controller determines atmospheric air pres- operates, the controller determines intake manifold Based on MAP sensor voltage and inputs from other sensors, the engine controller adjusts spark advance The MAP sensor (Fig. 6) mounts on a bracket at- tached to the alternator bracket. The sensor is con- Fig. 4 Distributor Pick-up Fig. 5 Inner and Outer Slots of Rotating Disk—3.0L Engine Fig. 6 Map Sensor . FUEL SYSTEM 14 - 55 |