No power to ICM

MICHAEL042

MEMBER
2004 SATURN ION
2.2L
4 CYL
150,000 MILES

Getting no power to fire spark plugs. Got the constant twelve volt power going to ICM but not to spark plugs. Cranks over and has fuel. All fuses are good. Just has no to fire spark plugs. Changed ICM and coil pack.

Tuesday, May 22nd, 2018 AT 12:15 PM

7 Replies

SATURNTECH9

MECHANIC
30,869 POSTS

It sounds like it could be the crankshaft position sensor. Do you have a multi-meter to do some testing?

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Tuesday, May 22nd, 2018 AT 7:08 PM

MICHAEL042

MEMBER
4 POSTS

Thanks for getting back with me. I do not have that meter. However, that is not the problem. Could it be the ignition itself?

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Wednesday, May 23rd, 2018 AT 10:55 AM

SATURNTECH9

MECHANIC
30,869 POSTS

How do you know the crankshaft position sensor is not the problem? Also, you verified there is not spark while cranking the engine over?

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Wednesday, May 23rd, 2018 AT 11:28 AM

MICHAEL042

MEMBER
4 POSTS

I replaced the sensor. Yes I have tried all that.

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Wednesday, May 23rd, 2018 AT 11:32 AM

SATURNTECH9

MECHANIC
30,869 POSTS

Have you checked to see if your setting any codes in the computer?

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Wednesday, May 23rd, 2018 AT 8:22 PM

MICHAEL042

MEMBER
4 POSTS

No codes.

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Wednesday, May 23rd, 2018 AT 8:23 PM

KEN L

MASTER CERTIFIED MECHANIC
48,345 POSTS

Lets check the wiring for the system to confirm and if okay I believe the PCM has gone out. Here is a guide and the engine wiring diagrams to confirm the issue. Check power and grounds for the PCM.

https://www.2carpros.com/articles/how-to-check-wiring

Check out the diagrams (below). Please let us know what happens.

Cheers, Ken

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