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How do you check resistance on coil pack 2003 trailblazer?

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A coil pack can be checked for continuity and resistance with an ohm meter. But for heat or load failure the only way to check a coil pack is to replace it.



what is the max resistance on a 4.7 grand jeep cherokee coil pack


Check the ignition control module (autozone) and check coil resistance. After that not sure I have same problem with new icm and new coil.


The 2005 Chevy Trailblazer has Coil-On-Plug ignition coils so there are 6 "coil packs". Each one is mounted on top of the spark plug.


Check the coil or coil packs if equipped.


All the coils are the same, each one must be connected to the connector for the cylinder the coil is connected to the spark plug for


The second spark plug is misfiring. Could be the coil right above the spark plug.



Coil packs can not be checked for heat or load related issues. They can be checked for proper resistance with an ohm meter.


The voltage (or 'potential') coil has the higher resistance, because it is connected in parallel with the load.


A engine coil has a high internal resistance, the needing of a suplementar resistance may be advised to you by a car electrician, who works with such brand and model of your car.


Yes. This testing procedure is valid for most automotive coils. Using an ohmmeter, check the resistance between the side terminals of the coil. Do this with all of the wires to the coil disconnected. You should see 0.75 to 0.81 ohm of resistance. Then check the resistance between either side terminal and the center high tension terminal. The reading should be 10,000 to 11,000 ohms. Any significant deviation from these numbers would indicate that the coil is defective.


Distributor pickup coil resistance 140-180 ohms.


First, see if the each coil is getting the required voltage from the ignition switch (probably 12V). If they are, you can check the resistance of the coil with a simple volt meter. Should read minimal resistance. If the meter reads OL then the coil windings are open (defective/bad).


You can check the ignition module (coil) with a digital volt/ohm meter for a start. Check the primary and secondary circuits resistance and go from there. You can also check the spark plug wires resistance with the same meter.


if you mean the ignition coil packs yes you can test. you need to take them out of the car. then using an ohmmeter, check the resistance between the primary terminals on the underside of the coil. the resistance should be 0.50-0.90 ohms. then check the resistance between the secondary terminals (were the plug wires go). it should be 5000-10,000 ohms.


The 2004 Trailblazer does not have plug wires. It has a coil pack per cylinder that connects direct to the spark plugs.


check with meter to see resistance value (ohms)should read 3.4


At 6500-11500 ohms, the resistance on the ignition coil is okay. If the resistance exceeds 11500 or below 6500, the coil requires replacement.


A Linear power transformer coil? use an Ohm meter and check the resistance of the coils. No resistance is an open circuit. Also check for a cross circuit from one side of the transformer to the other.


use an multimeter to check the resistance between 1-4 and 2-3 on the coil pack, u should get around the same figures.


The resistance of the coil does not remain the same throughout the experiment because the voltage across and the current is varied.


Coil pack and the spark plug- check compression


The plugs are located along the top of the motor under the coil packs. You must first remove the resonator box from the top of the motor to see the coil pack covers along the top of the motor. www.trailvoy.com Trailblazer enthusiasts forum



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