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dcflh07 03-09-2012 08:00 PM

2001 sl ignition wiring diagram
I'm having problem with the ignition with my daughters 2001 sl. i have changed all the major parts and still no changed so far-ignition module,both coils,plug wires,plugs,crankshaft position sensor and fuses. I'm running wires right now. side note also changed fuel filter and checked fuel pressure(86psi).Don't think its with the fuel system.One of my problem is that I have hayes manual and the wiring does not cover my year model.So i'm asking someone for the right wiring diagram so i can finish running wires.

fdryer 03-09-2012 10:13 PM

Re: 2001 sl ignition wiring diagram
The seating of the cps is crucial; others have made the mistake of not seating it completely due to the O-ring and caused more problems. No cps output = no pcm operation to; turn on the fuel pump, ignition system for spark, and pulse the injectors.

When you replaced the spark plugs did you notice any raw fuel anywhere? Smell fuel? Injectors are fused with one 10 amp fuse.

The ignition system is fused with one 10 amp fuse.

There's also an outstanding issue with S-series cars up to and including '01's; the faulty plastic original coolant sensor that cracks and runs the engine rich and sometimes floods during starting. Replace it with a flat nosed brass one and use a new thermostat (195F). The temporary cure for flooding is to hold the throttle wide open while starting.

If no fuel is being injected then try spraying starting fluid; an engine start will confirm no injector pulses. The engine firing up, if not flooded, verifies spark and fuel.

off-track 03-09-2012 11:09 PM

Re: 2001 sl ignition wiring diagram
+1 on checking and re-checking the crank sensor and connector (as well as fuses).

Re-wiring is really extreme (and probably unnecessary) unless the harness fried/melted.

If you pull the wires off of the 4/1 coil pack and crank the engine does it arc between the terminals?

dcflh07 03-10-2012 04:13 PM

Re: 2001 sl ignition wiring diagram
thank you to fdryer and off-track.
1)the crankshafter senser is seated and I'm get the correct ohms and milli volts from it.
2)I have fuel and correct pressure to the cylinders
3)I have battery volt to the ignition module and good ground so my fuse is good, and I checked the fuses also with a meter.
4) I need a wiring diagram to finish checking wires for a 2001 dohc sl. my book only good to 95.
5)yes I have checked both coils for spark and still no spark. I have checked and cleaned both the block and the base plate for ignition module to get good ground and have a good ground.
But as i stated without a good diagram I'm chasing my tail.please read my first letter for more info

fdryer 03-10-2012 04:21 PM

Re: 2001 sl ignition wiring diagram
I'm not sure why you aren't sparking and the wiring diagrams are more than a page. Pm me an e-mail address with basic car info and what's needed so I can follow up on sending correct info. It won't help if I don't have car info and what's needed and I send you Ferrari(?) pdf's. Like I would have them...........:no: :arr:

dcflh07 03-10-2012 04:30 PM

Re: 2001 sl ignition wiring diagram
email the info to [email][/email]. 2001 saturn sl dohc vin7. yes right now I need to rule out a wiring problem. Right now I think its a broken wire at on of the connectors. the engine has been out of the car twice in the past two years.

fdryer 03-10-2012 04:38 PM

Re: 2001 sl ignition wiring diagram
[QUOTE=dcflh07;1854721] .... the engine has been out of the car twice in the past two years.[/QUOTE]

That would explain a possible wire break.................

dcflh07 03-10-2012 06:06 PM

Re: 2001 sl ignition wiring diagram
thanks fdryer
got the drawings, #6 is the one,now I can check the wires, I now see another item I did not check the knock sensor.If the wires run out good I will have to check the inputs and outputs from the pcm to each component( will have to get the valves).one other thing I'm going to do is check for error codes. thanks again this helps

dcflh07 03-16-2012 02:30 PM

Re: 2001 sl ignition wiring diagram
after running all the wires for the ignition system, I found two connector's pins corroded(at the connector on the side of the for crankshaft sensor and the knock sensor) and the ground case ground for the powertrain control module.
cleaned and removed the corrosion the system works normal. thanks again for the wiring diagrams it help greatly.

fdryer 03-16-2012 06:00 PM

Re: 2001 sl ignition wiring diagram
Well done! :)

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