Genuine Chevrolet Astro Ignition Control Module

Chevrolet Astro Ignition Control Module Parts Questions & Experts Answers

• Distributor Ignition Control Module Assembly
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  Q: How to check or replace the module without removing the distributor on Chevrolet Astro?

  A: Without removing the Distributor, you can check or replace the Ignition Control Module by first disconnecting the tachometer lead (if equipped) at the distributor and then checking for a spark at coil and spark plug wires. The distributor cap must be removed if there is no spark detected, and in addition to this remove also Ignition Control Module from the distributor while leaving the connector plugged in. With ignition switch turned On, check voltage on positive terminal of Ignition Control module; if it reads below ten volts wire fault may exist between terminal positive of Ignition Control module and positive Ignition Coil connector or primary circuit of ignition coil to ignition switch. If it reads above ten volts, examine "C" terminal of Ignition Control Module; if it measures less than one volt problem could occur with distribution-to-coil "C" terminal connection, an open primary circuit in the coil itself, or an issue with an ignition coil. New Ignition Control Module should substitute any old one that shows readings between 1V-10V followed by successful sparking during testing conditions because faulty equipment was replaced. For example, lack of spark indicates problems with ignition coils. To continue, unplug pick-up coil connector from Ignition Control Module while observing voltage reading as test light is momentarily connected between battery positive terminal and "P" terminal on Ignition Control module for less than five seconds when ignition switch is ON. If there is no drop in voltage go ahead to check ground for Ignition Control Module and upon confirmation that it's good replace old unit with new one only after which you may proceed unless otherwise specified hereinafter. If so, test light must be pulled out from "P" as well as change over to high speed aerodynamics affecting water drag coefficient let alone pick-up coils being either defective or not grounded properly resulting into inability get necessary power supply required generating electrical signals across switch contacts reliably throughout its lifespan without having any side effects whatsoever. Disconnecting the battery's negative terminal is important first step when replacing Ignition Control Module. Taking off distributor cap and rotor, unscrewing both Ignition Control Module attaching screws and then lifting Ignition Control Module off distributor is another way of doing this. Electrical leads from Ignition Control Module should be disconnected in a manner that ensures they are not interchanged between each other. Avoid wiping grease off Ignition Control Module or distributors base if same one is being reused. If new IC module is used, apply silicone grease provided with it on its face as well as distributor base where IC module seats for heat dissipation purposes receiving these instructions constantly throughout this article they will always be given directions needed no matter what context may require them ensuring process runs smoothly without any issues arising at any time while trying solve problems related to automobile maintenance such as faulty fuel-injector relay etc. As you finish this work, fit the Ignition control module into place, connect both electrical leads, install the distributor cap with rotor and lastly reconnect the negative terminal of the battery.