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---- '''Navigation''' * Main MembersPage/KoabiBrooks * Ignition MembersPage/KoabiBrooks/Ignition * Injection MembersPage/KoabiBrooks/Injection * Trigger MembersPage/KoabiBrooks/Trigger * Wiring MembersPage/KoabiBrooks/Wiring * Q&A MembersPage/KoabiBrooks/Questions ---- '''IGNITION PAGE''' http://www.starshadow.com/~koabi/carstuff/VEMS/060408coilpack.JPG I need to figure out what the 4 pins are for on the connector. Disclaimer, the info below is all based on assumption... *4 pins - '''THIS IS HOW WE THINK IT WORKS''' **1 pin for a pair of cylinders **1 pin for the other pair of cylinders **1 pin for power supply **1 pin for ground **Fire state pins 2-3 are ground. Wait state pins 2-3 are +5v. Don't ask me why I don't understand (yet) *New Theory: **Coilpack is triggered on +5v instead of switched ground **to be determined... * also possible **1 pin for power supply **1 pin for ground **1 pin to trigger spark **1 pin as HV (secondary side) return (easy to test: appr 10..20kOhm with the sparkplug connection, maybe only in one direction) Diagnosing the VR6 coilpack: Pin 1 - power, Pin 5, ground 1) Disconnect the 5 pin harness connector from the ignition coil power output stage 2) Connect a voltmeter across terminals 1(-) and 5(+) in the connector. Turn the ignition on and check that battery voltage is present. 3) Remove fuse no. 18 (fuel pump, H02S control module) from the fuse/relay panel. 4) Connect an LED test light across terminal 5 and terminal 2 in the harness connector. Actuate the starter and check that the LED flashes. *If the LED does not flash, the ignition (ground) signal for cylinders 1 and 6 is not present. Check the wiring between the coil and the ECM connector. If no faults can be found, the ECM might be faulty. *If the LED does flash, but the spark plugs for cylinder no 1 and cylinder no 6 do not fire, the ignition coil/power output stage is faulty and should be replaced. 5) Repeat above step across terminals 5 and 3 (cylinders 3/4) and terminals 5 and 4 (cylinders 2/5). If any faults are found replace ignition coil/power output stage.
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