Where are the cylinders on a Duramax injector circuit?

Where are the cylinders on a Duramax injector circuit?

The FICM separates the high-voltage injector circuits into two groups: cylinders #2, #3, #5 and #8 and cylinders #1, #4, #6 and #7. The firing order is 1-2-7-8-4-5-6-3 with the odd-numbered cylinders located on the passenger side of the engine and the even-numbered cylinders located on the driver’s side.

Why are my door controls not working on my Chevy Duramax?

After a few weeks of intermittent minor power window problems (drivers side not wanting to work all the time but usable) all of a sudden none of of the driver’s door controls are working; power mirrors, power windows, door locks, heated seats, seat memory…nothing!

Where is the DDM fuse on a Chevy Duramax?

Anything on that door panel that has a switch, goes thru the DDM. Just to be sure, check the DDM fuse in the side dash panel. If you pull it (or it blows), nothing works on the Driver’s side, not even your key fob.

What happens if the engine control module fails?

If the ECM fails completely, it will leave the vehicle without engine management control, and will not start or run as a result. The engine may still crank, but it will not be able to start without the vital inputs from the computer.

How much does a Duramax injector circuit cost?

The wiring on the injectors is very simple: One wire powers the injector while the FICM fires the injector by grounding the other. The recommended resale from my supplier on these remanufactured injectors is about $1,600 for the set of four.

What is the code on the Duramax fuel injector?

Low and behold, the P1249 had returned as it had numerous times before. But the only code displayed was a P0205, which indicated a circuit fault on #5 fuel injector. Working quickly before the cylinder heads warmed up, we removed the FICM connectors and repeated the pin test.

Where is the fuel junction block on a Duramax?

On the original LB7 Duramax it is located in the fuel junction block. On the LLY Duramax, it is located in the middle of the right-hand fuel rail.

Where is the throttle position sensor on a Duramax engine?

Throttle Position Sensor (TPS) On the LMM and newer Duramax engines, there is a throttle valve assembly that is used to regulate engine airflow during regeneration. The throttle valve assembly is bolted to the front of the inlet tube below the intake air heater.

What to do if OBD-II cylinder 1 injector does not work?

If you have access to an injector tester, activate the injector and see if it operates. If the injector operates, then you likely have either an open in the wiring, or a blocked injector. If you do not have access to a tester, swap the injector with another one and see if the code changes. If the code changes, then change the injector.

What is the trouble code for the injector?

Last Updated 2017-08-26. ASE Master Tech. Trouble Code. Fault Location. Probable Cause. P0204. Injector 4 -circuit malfunction. Wiring, injector, ECM. We recommend Torque Pro.

Why is my Duramax injector not working properly?

This problem is caused by a poorly designed metal mount for the harness and requires a thorough inspection of the FICM harness where it passes behind the alternator. The previous shop had obviously been aware of this TSB and had taken the harness apart for inspection.

The FICM separates the high-voltage injector circuits into two groups: cylinders #2, #3, #5 and #8 and cylinders #1, #4, #6 and #7. The firing order is 1-2-7-8-4-5-6-3 with the odd-numbered cylinders located on the passenger side of the engine and the even-numbered cylinders located on the driver’s side.

This problem is caused by a poorly designed metal mount for the harness and requires a thorough inspection of the FICM harness where it passes behind the alternator. The previous shop had obviously been aware of this TSB and had taken the harness apart for inspection.

Last Updated 2017-08-26. ASE Master Tech. Trouble Code. Fault Location. Probable Cause. P0204. Injector 4 -circuit malfunction. Wiring, injector, ECM. We recommend Torque Pro.

Can a PCM injector draw too much current?

An injector that has a resistance value outside the manufacturer’s specified range can draw too much current, damaging the driver inside the PCM. If the circuit is OK, the next step is to test the electronic portion of the injector. This is done by measuring the resistance between its two terminals.

How much does it cost to replace a Duramax injector?

The recommended resale from my supplier on these remanufactured injectors is about $1,600 for the set of four. Replacing all four injectors required removing both right- and left-bank rocker arm covers and the overlay of wiring harnesses and ducting covering of each.

Why did my GMC injectors have to be replaced?

A red flag went up in the owner’s mind because the GMC had been bought from a private owner who claimed that all eight injectors had been replaced prior to the sale. The current owner called a mutual friend of ours who works as a heavy-duty mechanic for a local construction company.

What kind of injectors do Chevy GMC GMC use?

Chevy GMC/Duramax 6.6 LB7 Fuel Injectors & Accessories For 2001-2004.5 models with the LB7 engine. We carry a large selection of LB7 injectors, LB7 fuel lines, LB7 CP3 Pumps, as well as LB7 injector installation hardware. Be sure to check out our LB7 injector kits which offer a great value.

Which is GM Duramax LLY fuel injector do you use?

The BD-Power 1715504 Remanufactured Fuel Injector for your 2004.5-2005 GM 6.6L Duramax LLY is a direct replacement for your factory injector. BD-Power is one of only a few shops with the capability, the know-how and equipment to fully test and rebuild common rail injectors.

What kind of injectors do I need for my Chevy LB7?

Chevy GMC/Duramax 6.6 LB7 Fuel Injectors & Accessories for 2001-2004.5 models with the LB7 engine. We carry a large selection of LB7 injectors, LB7 fuel lines, LB7 CP3 Pumps, as well as LB7 injector installation hardware.

What is the resistance of a Duramax injector circuit?

The specified resistance at room temperature is between 0.3 to 0.4 ohms. Before measuring the resistance of any circuit, remove the negative cable on each battery. Since .3 ohms is a very small resistance, the ohmmeter leads must be clean and the meter must be perfectly “zeroed” by crossing the leads and pushing the “relative” button.

What causes the cylinder 2 injector to malfunction?

The most common causes for this code include: Corroded fuel injector, connections or wiring Poor or broken electrical connections in the connector or harness Open or short wiring harness for the cylinder 2 injector circuit Defective fuel injector power circuits

How does the PCM control the fuel injector?

The PCM controls each fuel injector by grounding the control circuit via a solid state device called a driver. The PCM monitors the status of each driver. Need more information on how to fix the P0200 CHEVROLET code?

What causes the injector to leak when the engine is shut down?

When the engine is shut down, the crack in the injector’s body will often cause fuel to drain back from the fuel lines and rails back to the tank. When the leak down occurs, the engine has to spin over for an excessive period of time in order to re-prime the injection system.

What to do if you have a fuel injector problem?

Use cap off tools to block off one injector at a time. A slight knock can start occurring due to injector problems, often after a contaminated fuel problem. Fuel pressure regulator: Watch actual vs. desired rail pressure. If the actual deviates more than +-300 PSI from desired, the regulator could be sticky.

Where does the fuel enter the injector in a diesel engine?

Fuel enters the injector through an opening on the side of the injector body, which is delivered by the fuel pump and surrounds the injector through passages in the cylinder head. At idle, the high-pressure oil is around 600 psi.

When the engine is shut down, the crack in the injector’s body will often cause fuel to drain back from the fuel lines and rails back to the tank. When the leak down occurs, the engine has to spin over for an excessive period of time in order to re-prime the injection system.

When do you Know Your diesel engine injector is bad?

If the Cummins engine won’t run at all, then the injector is usually cracked so badly that the fuel system can never reach the threshold. The oil will also be heavily diluted with diesel fuel. By installing the cap on each cylinder one at a time, the bad injector can be isolated — you’ll know you’ve found it when the engine fires normal and fast.

Fuel enters the injector through an opening on the side of the injector body, which is delivered by the fuel pump and surrounds the injector through passages in the cylinder head. At idle, the high-pressure oil is around 600 psi.

Where is the fuel injector in cylinder 1?

Cylinder 1 is generally found on the driver’s side of the engine bay. The fuel injector will be found attached to the fuel rail installed onto the engine intake. Fuel injectors are a common failure in vehicles with over 100,000 miles due to the contaminated particles in the gasoline.

What is the diagnostic code for cylinder 6?

P0206 is a diagnostic trouble code (DTC) for “Injector Circuit Malfunction – Cylinder 6”.

What’s the resistance of a fuel injector circuit?

According to service information, the correct diagnostic procedure is to use a professional volt/ohmmeter to measure the resistance of each fuel injector circuit. The specified resistance at room temperature is between 0.3 to 0.4 ohms.

What to do if your fuel injector is clogged?

Possible causes. Clogged fuel injector port. Test by attaching a fuel pressure gauge. Prime the fuel rail by turning the key to the ON position for 2-secs. Then activate each fuel injector and look for a consistent pressure drop. The fuel injector that causes a lower pressure drop is the one that’s clogged.

According to service information, the correct diagnostic procedure is to use a professional volt/ohmmeter to measure the resistance of each fuel injector circuit. The specified resistance at room temperature is between 0.3 to 0.4 ohms.

A red flag went up in the owner’s mind because the GMC had been bought from a private owner who claimed that all eight injectors had been replaced prior to the sale. The current owner called a mutual friend of ours who works as a heavy-duty mechanic for a local construction company.