1998 Saturn SC2 Ignition module

Tiny
MALCO
  • MEMBER
  • 1998 SATURN SC2
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 89,000 MILES
Is there a way to test the ignition module using a multimeter?
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Sunday, January 24th, 2010 AT 8:42 AM

6 Replies

Tiny
SATURNTECH9
  • EXPERT
I don't know of any way to test the ignition module with a meter. There expensive and hardly ever fail I can't remember the last time I had to replace one. The coils are more likely to fail then the module. Let's start from the begining do u have spark at any of the coil towers?All u have to do is take off the wires on two coil towers and crank it over and watch for spark from tower to tower then put them back on and check the other two. Give me some more info and I'll help u thru ur problem. Does the car run if not what does it do?
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Sunday, January 24th, 2010 AT 5:01 PM
Tiny
MALCO
  • MEMBER
I have no spark at plugs, already pulled wires at the coils there is no spark at the towers, checked crankshaft pos sensor with my meter it was in the range 772 ohms the specs allow 700 to 900 ohms checked coils also found to be in the range of 8k to 15k resistance there is a good ground at ign module. Power to wire 1039 at plug for module
Any assistance you could give me would be greatly appreciated
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Tuesday, January 26th, 2010 AT 10:19 PM
Tiny
SATURNTECH9
  • EXPERT
Ur on the right track so do u have any trouble codes?I was looking at the dia for no spark and trouble codes lead u down differnt paths for things to check. Let me know.
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Wednesday, January 27th, 2010 AT 1:54 PM
Tiny
MALCO
  • MEMBER
On a flow chart (from GM for no spark code) that I have it says to check circuit 451 to B+ found 451 at connector. For B+ I had no idea what that was so I checked it as battery positive is this correct? I am thinking there is a short or open in the wiring somewhere. This car was recently purchased by sons girlfriends mom so have no history on this car.
What are the different paths the codes send you to?
Also on the rear of the engine between the heads there is a sensor with 2 wires someone wired it in kind of cheesy was wondering if this car could have a camshaft sensor?
Thanks for listening
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Thursday, January 28th, 2010 AT 10:05 PM
Tiny
MALCO
  • MEMBER
I now have a code showing P0341 cam shaft position sensor performance (CMP)
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Saturday, January 30th, 2010 AT 3:32 PM
Tiny
SATURNTECH9
  • EXPERT
I sent u the info I said I would. When u see the wiring diagram u will be able to figure out what is power and ground. There is now cam sensor in ur car. What color wires are going to that sensor with the cheesey wiring?
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Saturday, January 30th, 2010 AT 7:59 PM

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