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02 Cougar circuit "B" malfunction
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mechanic79
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Jan 25, 2012, 4:02 PM
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02 Cougar circuit "B" malfunction
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Ive got compression, and the injectors are spraying gas. The only code im getting is this "circuit B malfunction", and that is number 3&4 witch are on the same bank of the coil pack. Yes ive tried 2 different coils and got the same results. My question is, would it be the PCM not sending the signal to the circuit "B" to fire?
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Hammer Time
Ultimate Carjunky
/ Moderator
Jan 25, 2012, 4:05 PM
Post #2 of 17
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Re: 02 Cougar circuit "B" malfunction
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We need the exact code number.
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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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mechanic79
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Jan 25, 2012, 4:13 PM
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Re: 02 Cougar circuit "B" malfunction
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Sorry, Didnt realize ya needed that, Ill have to get that for ya tomorrow when i get back to work.
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mechanic79
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Jan 26, 2012, 7:27 AM
Post #4 of 17
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Re: 02 Cougar circuit "B" malfunction
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the code from the PCM is P0352, Ignition coil "B" malfunction. I thank you for any help you can give me on this.
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Hammer Time
Ultimate Carjunky
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Jan 26, 2012, 7:46 AM
Post #5 of 17
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Re: 02 Cougar circuit "B" malfunction
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That codes indicates a problem with the circuit on ignition coil for cylinder #2. It could be the coil, the computer or any of the wiring in between.
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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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mechanic79
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Jan 26, 2012, 8:36 AM
Post #6 of 17
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Re: 02 Cougar circuit "B" malfunction
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Not trying to be a smart a**, but 3&4 are the ones not fireing, Number 2 is working fine. Ive got four wires going into the plug on the coilpack, one is 12 volt, and the others are low voltage, is that the way it should be? Im agreeing with you, i think its in the pcm, i just need a second opinion, its a customers car and weve allready sunk alot of money in it thus far.
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Discretesignals
Ultimate Carjunky
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Jan 26, 2012, 9:25 AM
Post #7 of 17
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Re: 02 Cougar circuit "B" malfunction
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4 or 6 cylinder engine?
Since we volunteer our time and knowledge, we ask for you to please follow up when a problem is resolved.
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mechanic79
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Jan 26, 2012, 9:50 AM
Post #8 of 17
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Re: 02 Cougar circuit "B" malfunction
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2.5 six cylinder
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Discretesignals
Ultimate Carjunky
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Jan 26, 2012, 10:03 AM
Post #9 of 17
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Re: 02 Cougar circuit "B" malfunction
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3 and 4 share the same coil. You check for a coil trigger at pin 3 brn/green wire at the coil pack connector while cranking the engine?
Since we volunteer our time and knowledge, we ask for you to please follow up when a problem is resolved.
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mechanic79
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Jan 26, 2012, 10:05 AM
Post #10 of 17
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Re: 02 Cougar circuit "B" malfunction
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can i check that with a regular test light?
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mechanic79
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Jan 26, 2012, 10:06 AM
Post #11 of 17
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Re: 02 Cougar circuit "B" malfunction
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can i check that with a regular test light?
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Discretesignals
Ultimate Carjunky
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Jan 26, 2012, 10:13 AM
Post #12 of 17
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Re: 02 Cougar circuit "B" malfunction
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I wouldn't just in case for some odd reason your test light uses to many amps and burns out the driver in the PCM. You have a logic probe or test lamp that uses LEDs? You might be able to wire in an injector noid light too.
If you have no trigger at the coil connector, you'll have to make sure that you have no trigger at the PCM connector to rule out a wiring problem before going after the PCM. I don't know if you know this, but one side of whatever you use has to have battery voltage because the PCM driver grounds the coil circuit to energize the coil. When it wants to fire the coil it opens the circuit. The lamp should flash. If it stays on or doesn't come on at all, then you need to verify wiring before going after the PCM.
Since we volunteer our time and knowledge, we ask for you to please follow up when a problem is resolved.
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mechanic79
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Jan 26, 2012, 10:26 AM
Post #13 of 17
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Re: 02 Cougar circuit "B" malfunction
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if i unplug the connector at the coil and make a jumper to a noid light from the brown with a green and groung the other side should it flash? or should i leave it pluged into the coil to make the test?
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mechanic79
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Jan 26, 2012, 10:45 AM
Post #14 of 17
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Re: 02 Cougar circuit "B" malfunction
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discrete, i figured out how to test it. i have green with a blue that is 12 volt, i tied my noid light in an jump it to brown with blue and get a pulse, and the same with the brown with yellow, im getting no pulse with brown with green. the trigger wire for 3&4 coil bank. would you have access to wire diagram to show me where the brown with green goes so i may by-pass it for now instead of pulling wireing harness apart just to rule out broke wire? the wires come out of the coil and go under the intake, and from there im not sure.
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mechanic79
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Jan 26, 2012, 12:45 PM
Post #15 of 17
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Re: 02 Cougar circuit "B" malfunction
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if not, does anyone else have access to a diagram?
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Hammer Time
Ultimate Carjunky
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Jan 26, 2012, 1:31 PM
Post #16 of 17
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Re: 02 Cougar circuit "B" malfunction
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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mechanic79
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Jan 26, 2012, 1:50 PM
Post #17 of 17
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Re: 02 Cougar circuit "B" malfunction
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thanks hammer, thats very helpfull
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