Piezo Igniter Wiring Diagram Wiring Diagram Vrogue Co Here's an extract from the long video covering the toyota mr2 ignition system testing. i felt a video just covering the igniter testing would be helpful as t. So the aging mr2 broke down the other day, the first time it failed to make it home in 5 years of ownership .after a quick check with the ecu via it's fl.
How To Test A Toyota Ignition Igniter 1421 Toyota Igniter Check for power on b in the check connector when ignition is on. that verifies efi fuse, ig2 on ignition switch, ignition fuse and efi relay. check that the check engine light illuminates when ignition is on. that verifies that the ecu is receiving power, and is functioning at least enough to ground the cel. 1. visually inspect the igniter for any evidence of deterioration or cracks. check for chafing, burned areas, or wire cuts in the sleeving covering the wire. the connectors ought to be securely fastened and free of corrosion and or oxidation. take a look at the igniter for hot regions. watch the igniter as it heats up. Also, check your crank sensor signal, if you are not getting a signal to the computer that the engine is turning it will not give you fuel or spark. hope this helps. also if you had the wiring diagram of the ignition system then you can verify the voltage coming out from the igniter to each coil. Modern toyota vehicles have one ignition coil for each cylinder. each coil has an integral igniter. every time the ecm sends an igt pulse to an igniter, the igniter opens the ignition coil primary circuit, and the ignition coil produces a spark for the spark plug. the ecm can control the ignition timing by controlling the igt pulse.
Comments are closed.