Question about 2001 Pontiac Grand Am SE

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No power to the pcm ign fuse, also no start - 2001 Pontiac Grand Am SE

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Check the ignition switch.

Posted on Apr 23, 2010


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1999 CADILLAC DEVILLE How many ecm's or modules are on this model. Should I disconnect them one by one to see which one stops the fuse from blowing, look at something else first?

The other modules on the vehicle have nothing to do with the PCM / ECM fuse blowing . Looking at a electrical distribution diagram to see what all the PCM/ECM fuse power's up an issolate all the thing's one at a time till the fuse doesn't blow any more . Suggest you check out a few video's on youtube on how to find a electrical short . Your best bet mite be to take it to a qualified repair shop that has the knowledge an testing equipment to diagnose this problem . Because it doesn't sound like you know much about it . All the other modules on the vehicle have their own fuse . Something the PCM/ECM power's is causing the fuse to blow . What fuse is blowing ? You don't say ? What code's did you pull an what kind of code reader did you use .
Finding active short
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Dec 07, 2017 | Cadillac Cars & Trucks

1 Answer

1999 Gmc Sierra 4.8L cranks/No Start Using snap-on Solus Scanner. I followed basic diagnostics: Checked fuses- good Pulled PCM and BCM codes- none No spark and no fuel. No ignition power to fuel...

Did you check your CKP and CMP power wires for a short to ground? Short to ground up stream might be pulling the voltage low from the PCM. Also.. have you pulled up the underhood fuse block just to see if there's any rodent damage to the wiring under there? That's a pretty common spot for rodents to cause problems.

Oct 03, 2013 | Cars & Trucks

1 Answer

My 2004 Chevrolet Malibu Classic keeps blowing the Ign sw-batt1 (40A) Maxi Fuse What do I do?

Is the 4th digit of your vehicle's VIN an "N"? If it is an "N", it looks like the IGN SW BATT 1 (fuse#5) powers up the powertrain control module (PCM), body control module (BCM), and instrument panel cluster (IPC). If your PCM ACC fuse G (10 amp) and IPC/BFC ACC fuse J (10 amp) in the left driver side fuse block in the dash are not blown, then you have a short circuit to ground in the wire between the IGN SW BATT 1 fuse in the underhood fuse block, and the ignition switch in the steering column. This would be a thick red wire. A short circuit to ground means that this wire somewhere has rubbed through and is touching metal. Find the short, repair the wire, and you'll stop replacing that expensive 40 amp fuse :)
Unless... someone has tapped into the wire (amplifier or stereo?) and is pulling way too much current through the wire, in which case the fuse would be blowing out. The correction for a blown fuse is NEVER to install a bigger fuse. You risk overheating the circuit and possible fire. Always find the cause of the short/overcurrent.

Aug 23, 2013 | Cars & Trucks

1 Answer

Won't start.

ck the ign. switch

Jun 09, 2012 | 1999 Oldsmobile Silhouette

1 Answer

No power to the injectors

No injector pulse at injectors:
a) check fuses
b) use scan tool to read RPM at PCM while cranking. Ask question specifying RPM PID data.
c) crank sensor/cam sensor/ign. module/wiring fault
d) stuff not plugged in properly
4) check fuses
5) dead PCM note PCM pulses injector ground based on sensor input, power is constant from ignition
how are you testing injectors theres something called a noid light auto parts store let you use them free you have to test it on the injector itself what did you car do before it died does it turn over but not start

Dec 03, 2010 | 2002 Pontiac Grand Am

1 Answer

2000 t/c 3.8 turns over no spark new cam,crank sensor coil pak and computer 126000 mi

If the dealer did the work then they most likley checked the ASD relay which powers the fuel and ign. Also you should make sure you are getting a consistant signal from the crank sensor. If not the magnet may of broke inside the cover. Also you should have a ign fuse or PCM fuse. Also you may of lost your computer ground. Add a new one to verify. Make sure you have 12v on the hot pcm wire.

May 11, 2010 | 2000 Chrysler Town & Country

1 Answer

Has no spark

well the easy answer is 20A ign fuse under the hood

however, lets check a few other things
1.) when you are cranking the vehicle is the check engine light on? If it is then this means that the PCM is not seeing the CKP... start searching for a loose connection at the CKP
2.) next swap the PCM power relay with the fuel pump relay and see if you get spark...if the relay is bad your vehicle still will not start because the bad fuse is now the fuel pump relay

Mar 24, 2010 | 1996 Lincoln Mark VIII

1 Answer

No power to ignition 96 camero dl

Check the wires to the distributer or to the modules could be poor or no conection. If you can turn the car over but no spark it's probably something to do with ignition, distributer, module, or wiring to the ignition.

Dec 28, 2008 | 1996 Chevrolet Camaro

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