Discussion in 'ZX2 1998-2004 2.0L DOHC' started by Andy_dre38, Mar 23, 2017.
yes it comes on
i still cant fix it my i had someone test the electric current it goes to coil pack but as soon as it cranks there is no power to it
please list everything you have replaced.
i replaced the ecu and pcm
and the 100a fuse it gave power to the car but it did not spark
Those both refer to same thing.
Has coil been checked or replaced?
Has crank sensor been checked?
What year is your car?
what is the code/part # of the replacement computer that you put in the car?
Did you replace the module under the airbox?
yes and the code is perfect match as old one
yes coil has power when tested but then it cuts off
cam sensor is a sensor. it has no power running thru it. coil doesnt care about the battery, its just an output. you fried the protection diodes in your modules when you hooked up the battery wrong.
without doing some major testing, your going to have to start replacing modules, and again check all the fuses inside and out
Um, most sensors do have power running through them, usually a 5V reference. There also aren't many modules in these cars. The only ones I'm aware of are the ECU which does the engine and transmission, a fuel pump driver module, an airbag module, and the CCRM which is hardly a module at all. On top of that these aren't CAN bus vehicles that need everything working or it won't run. OP has replaced both the ECU and CCRM which covers every module that should have to do with spark. He needs to pull codes and look at live data on a decent scan tool.
Just looked up a wiring diagram. Coil circuit has one 12V power wire that is hot when the key is in the "run" or "start" positions and two wires that the ECU grounds when it wants to fire the coil. If that wire doesn't have power when cranking then it could very well be related to the ignition switch. Since the coil has power when you are in the "run" position try to 'pop start' the car or manually trigger the starter solenoid. I bet it will start.
i apologize, i will be more specific in the future. i was refering specifically to the VR sensors. but you are correct. most inputs do have a 5 volt ref which is controlled by the pcm and is regulated via a linear voltage regulator. but this is very easily tested.
OP needs to verify power to the coil like your saying in crank positon.
OK there is power to the coil when i checked with a probe tester and power cuts out when it is in crank position so does that mean it is just a wire?
It means the ignition switch is most likely faulty.
put an ignition switch in it.
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