The ignition control module on your Mazda 626 is responsible for sending a signal to the spark plugs, which help start your vehicle. The sensors on an ignition control module help it determine when to send a signal to the car’s ignition coil, which then sends the appropriate amount of voltage to the spark plugs. In some Mazda 626 models, the ignition control module is a part of the car’s ignition coil assembly; in others, it is part of the distributor. The procedure for removing an ignition control module differs for each location.
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Remove the Ignition Control Module
A Mazda 626 without a distributor makes the ignition control module part of the ignition coil system. In models with a distributor, the ignition control module is part of the distributor. To remove the module from a distributorless system, the entire coil system must be removed. To remove the ignition control module from a model with a distributor, it is necessary to replace the distributor.
To remove a coil system and access the ignition control module in a Mazda 626 with a 2.3L engine, remove the charge air cooler for the front spark plugs and the solenoid valve for the back spark plugs. Detach the 4-pin coil connector, remove the screws from the coil, and pull the coil straight up to remove it from the car. For a Mazda 626 with a 2.0 or 2.5L engine, disconnect the negative battery cable and take out the air intake ducting. The spark plug wires must be removed from the coil pack and the wire harness detached. After removing the mounting brackets and bolts from the coil, the coil and module can be removed.
In a Mazda 626 with a distributor ignition system, the entire distributor must be replaced. Disconnect the negative battery cable, and remove the distributor cap. The ignition wires within the distributor housing should stay connected. Remove the spark plugs from the distributor, and use a wrench to free the distributor from the crankshaft. Pull the distributor free from its housing and replace with a new distributor and ignition module.
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