Friday, 27 November 2015

Test An Ignition Control Module

Determine evaluation an ignition module.

Locate the ignition module negative (-) wire. Pierce the negative wire with the multimeter's red lead. Remove the distributor cap without removing the spark plug wires. When a module goes defective, it usually fails completetly and the engine won't race at all. Checking your ignition module is an evident occupation that requires onliest the simplest of tools.


1. Remove one plug wire at the spark plug and include an antique Glimmer plug into the extent of the plug boot. Country the Glimmer plug on a metal surface on the engine. Eccentric person the engine and research for a Glimmer at the antiquated Glimmer plug. No Glimmer on the plug indicates an ignition disagreement.

2. Probation for voltage at the coil cold terminal when the ignition indispensable is on. Domicile the brick cause of the multimeter on the actual coil terminal. Apartment the melanoid bob to the battery counteractive terminal. Turn on the ignition switch to the "Run" position. The multimeter should read battery voltage at the positive terminal. If voltage is not present, then the problem is with the ignition switch or ignition wiring circuit.

3. Locate the ignition module positive (+) wire. Turn the key "Run" position without starting the engine. Pierce the positive wire with the multimeter's red lead. There should be a reading of battery voltage at the wire. If battery voltage is not present, check for an open circuit between the wire and the ignition switch.

4.The electronic ignition discipline module is a solid control "On/Off" switch for the ignition development. The module receives a vocable from a sensor inside the distributor. The expression is then used to blaze the ignition coil creating the impact for the Glimmer plugs. The ignition module may be located inside the distributor, on the distributor housing, or mounted to the side of the engine compartment. Rotate the distributor center shaft by hand or by cranking the engine. Observe the distributor rotor as the engine is being cranked over. If the distributor rotor fails to turn, then the distributor or distributor gears are bad. The multimeter should read voltage alternating between battery voltage and zero.

5. Replace the ignition module if the multimeter reading fails to fluctuate between battery voltage and zero as the distributor is turning. Install the distributor cap and fasten it securely to the distributor. Disconnect the multimeter from the ignition module and battery.