Ignition coil harness

Tiny
BOBBYPUE DOPEHI
  • MEMBER
  • 2011 CHEVROLET AVEO
  • 1.6L
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 127,500 MILES
I'm looking to get the ohms specs, on the ignition coil pack wire harness to test ohms reading. Thank you.
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Monday, June 24th, 2019 AT 1:01 PM

27 Replies

Tiny
JACOBANDNICKOLAS
  • EXPERT
Welcome to 2CarPros.

I believe this is what you are looking for. If this is wrong, let me know.

++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

1. Ignition OFF for 1 minute, disconnect the harness connector at the ignition coil.
2. Test for less than 5 ohm between the ground circuit terminal B and ground.

If greater than the specified range, repair the ground circuit for an open/high resistance.

3. Test for less than 5 ohm between the low reference circuit terminal C and ground.

If greater than the specified range, test the circuit for an open/high resistance. If the circuit tests normal, replace the ECM.

4. Test for less than 2 ohm between the ignition voltage circuit terminal A and the fuse.

If greater than the specified range, repair the ignition voltage circuit for high resistance.

5. Ignition ON, verify that a test lamp illuminates between the ignition voltage circuit terminal A and ground.

If the test lamp does not illuminate, test the ignition voltage circuit for a short to ground or an open/high resistance. If the circuit tests normal and the ignition voltage circuit fuse is open, test all components connected to the ignition voltage circuit and replace as necessary.

6. If all circuits test normal, test or replace the ignition coil assembly.

__________________________________

Let me know if that helps.

Take care,
Joe
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Monday, June 24th, 2019 AT 7:48 PM
Tiny
BOBBYPUE DOPEHI
  • MEMBER
Sorry for misinformation. Here's a pick of what I'm trying to test whether that is voltage or ohm's. I believe the harness my have a short in it. I tested a few terminals on the harness with ohms only, 1. Ignition turned to on position a couple terminals read black wire read 0.44, purple wire read 0.45.
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Tuesday, June 25th, 2019 AT 4:42 AM
Tiny
JACOBANDNICKOLAS
  • EXPERT
Welcome back:

First, I attached a picture of where all the wires go from that connector. Next, are any of these codes active?

DTC Descriptors
DTC P0351
- Ignition Coil 1 Control Circuit

DTC P0352
- Ignition Coil 2 Control Circuit

DTC P0353
- Ignition Coil 3 Control Circuit

DTC P0354
- Ignition Coil 4 Control Circuit

_____________________________________

Here are the directions for testing at the plug:

Note: Set the DMM to the DC Hertz scale for this test. DMM = Digital Multi Meter

5. Connect a DMM between the appropriate ignition control circuit listed below and ground.

* Ignition coil 1 control terminal D
* Ignition coil 2 control terminal E
* Ignition coil 3 control terminal F
* Ignition coil 4 control terminal G

6. Engine cranking, test for greater than 1.5 hertz between the appropriate ignition control circuit and ground.

If less than the specified range, test the ignition control circuit for a short to voltage, short to ground, or an open/high resistance. If the circuit tests normal, replace the ECM.

7. If all circuits test normal, test or replace the ignition coil.

_______________________________

Let me know if that helps.

Take care,
Joe
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Tuesday, June 25th, 2019 AT 6:45 PM
Tiny
BOBBYPUE DOPEHI
  • MEMBER
Joe I'm not seeing the picture you attached. However It is not showing any codes.
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Wednesday, June 26th, 2019 AT 8:19 AM
Tiny
JACOBANDNICKOLAS
  • EXPERT
Welcome back:

What specifically is going on with the vehicle? Also, I have no idea why the pics didn't attach. I'm going to try again. Let me know if you get them. I highlighted the wires between the ignition control module and the engine control module.

Take care,
Joe
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Wednesday, June 26th, 2019 AT 6:40 PM
Tiny
BOBBYPUE DOPEHI
  • MEMBER
Thank you.
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Thursday, June 27th, 2019 AT 8:32 AM
Tiny
BOBBYPUE DOPEHI
  • MEMBER
Thank you. It's a misfire fire. I have new spark plugs and coil pack, compression, good new fuel pump as well. I'm checking for short to coil pack as well as coil pack for defect.
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Thursday, June 27th, 2019 AT 8:35 AM
Tiny
JACOBANDNICKOLAS
  • EXPERT
Happy to help. Make sure to check the rubber boot that goes over the plug for arcing. Also, if there is any oil laying around the plug, see if removing it gets rid of the issue.

Let me know.

Joe
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Thursday, June 27th, 2019 AT 3:27 PM
Tiny
BOBBYPUE DOPEHI
  • MEMBER
Joe the first test cracking was for Terminal G. Second crank test was for terminal F. Third crank test was for terminal E. Fourth crank test was for terminal D. All test was done with a probe on ground B and a probe on each terminal mention above. Also I attached a few pics of misfires with the crank test in mind, not a lot of misfires is present due to disconnecting ignition coil harness. Lastly air to fuel ratio reads 1.7.1 I'm not running rich no black Sut from tale pipe. If you conclude my readings are not normal. I will have a conclusion to misfire and air to fuel
ratio.
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Thursday, June 27th, 2019 AT 3:29 PM
Tiny
BOBBYPUE DOPEHI
  • MEMBER
Misfire pictures.
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Thursday, June 27th, 2019 AT 3:29 PM
Tiny
JACOBANDNICKOLAS
  • EXPERT
The readings look okay. What is the knocking?
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Thursday, June 27th, 2019 AT 3:41 PM
Tiny
BOBBYPUE DOPEHI
  • MEMBER
This is because I disconnected the harness from the coil pack, so There's no spark going to coil pack, it does not knock when harness is connected to coil pack.
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Thursday, June 27th, 2019 AT 3:48 PM
Tiny
BOBBYPUE DOPEHI
  • MEMBER
Car has no leaks all gaskets replaced, valve cover gaskets and manifold. It's a very quite car at idle even when not in idle but misfires is felt and seen on obd.
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Thursday, June 27th, 2019 AT 3:50 PM
Tiny
BOBBYPUE DOPEHI
  • MEMBER
Test was not preformed with positive probe on each ignition coil terminals and negative probe on ground wire on harness. Test was preformed on harness only.
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Thursday, June 27th, 2019 AT 3:54 PM
Tiny
BOBBYPUE DOPEHI
  • MEMBER
Joe was this test preformed correctly. I put the DMM probe negative on the black ground wire attached to harness. Then I put the DMM positive probe, on dark blue wire on the harness. Then the car was cranked and the same steps preformed for the, black, purple, and red wire on harness?
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Thursday, June 27th, 2019 AT 4:14 PM
Tiny
JACOBANDNICKOLAS
  • EXPERT
Yes, that is correct. You want to use the ground provided. Interesting. Is the check engine light even coming on?
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Thursday, June 27th, 2019 AT 4:19 PM
Tiny
BOBBYPUE DOPEHI
  • MEMBER
Joe, I have some codes give me a second I'll post them, side note my chevy aveo5 when, it was cranked per knock sound, key is turned on to start and released becasue it will continue to keep cranking on it's on, without hand on key, once it cycles long enough it shuts off in that case.
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Thursday, June 27th, 2019 AT 4:37 PM
Tiny
BOBBYPUE DOPEHI
  • MEMBER
DTCs code history from dealer. B1440, B1433, B1380. No check engine light or codes pending or permanent.
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Thursday, June 27th, 2019 AT 4:41 PM
Tiny
BOBBYPUE DOPEHI
  • MEMBER
Joe could you tell me what color is ecm wire, ignition switch wire?
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Thursday, June 27th, 2019 AT 5:32 PM
Tiny
JACOBANDNICKOLAS
  • EXPERT
Welcome back:

The codes are related to the IP and air bag. There are multiple wires from the ECM and Ignition. Also, I can upload schematics, but there are a ton of them, so I need to narrow it down. Also, there are different schematics based on US and Mexico, so let me know what I can do to help.

Joe
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Thursday, June 27th, 2019 AT 7:07 PM

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