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2004 GMC Envoy with a 4.2 engine I need the pin locations…

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2004 GMC Envoy with a...
2004 GMC Envoy with a 4.2 engine I need the pin locations and ohm reader variances to determine coil pack Health on each of my coil packs please attach all data sheet
Submitted: 2 months ago.Category: GMC
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5/27/2018
GMC Mechanic: roybelding, Master Tech/Trainer replied 2 months ago
roybelding
roybelding, Master Tech/Trainer
Category: GMC
Satisfied Customers: 7,930
Experience: 35 years of retail operations on all vehicles
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hello, my name is ***** ***** I will be glad to assist you. please allow me a couple of minutes to gather some basic info.

Roy

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GMC Mechanic: roybelding, Master Tech/Trainer replied 2 months ago

circuit description and flow charts attached for testing

Roy

CIRCUIT DESCRIPTION
The electronic ignition system uses an individual ignition coil for each cylinder. The powertrain control module (PCM) controls the ignition operation through six ignition control (IC) circuits. Each ignition coil is connected to the PCM, power, or ground by the following circuits:
- The ground
- The ignition 1 voltage
- The appropriate IC control circuit

The PCM triggers an ignition coil by grounding the appropriate IC control circuit using information from the crankshaft position (CKP) and camshaft position (CMP) sensors.

DIAGNOSTIC AIDS
- The crankshaft position (CKP) signal is not needed to start and run.
- Many situations may lead to an intermittent condition. Perform each inspection or test as directed.

IMPORTANT: Remove any debris from the connector surfaces before servicing a component. Ensure that the gaskets are installed correctly. The gaskets prevent contaminate intrusion.

- Inspect the PCM and the engine grounds for clean and secure connections.
- For intermittent conditions, refer to Intermittent Conditions. See: Computers and Control Systems > Initial Inspection and Diagnostic Overview > Intermittent Conditions

TEST DESCRIPTION

Steps 1-5

Zoom/Print

Steps 15-22

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The number below refers to the step number on the diagnostic table.
5. A few sparks, then nothing is considered no spark.

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GMC Mechanic: roybelding, Master Tech/Trainer replied 2 months ago

Please take a moment and rate my service 3 stars or better. that is the only way the site will pay me for my efforts.

Roy

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GMC Mechanic: roybelding, Master Tech/Trainer replied 2 months ago

any update

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GMC Mechanic: roybelding, Master Tech/Trainer replied 2 months ago

do you have any other questions

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