How does an injector work on a PCM?

How does an injector work on a PCM?

Injectors do run off both crank and cam sensors, but mostly off the cam. And when the cam sensor does fail, The PCM goes into default mode, using the last stored run. Just a note… when you find the injector fuse pull it out, sometimes fuses just loose connection. You can’t post conmments that contain an email address.

How does the engine control unit control the injector pulse?

Question: What controls the fuel injector pulse? Ans: The engine control unit is the electronic brain that used to control the fuel injector pulse by gathering data from various sensors along the fuel line

Is there an injector pulse on my car?

SOLVED: I have no injector pulse. I have plenty of fuel – Fixya I have no injector pulse. I have plenty of fuel pressure and both crank sensors and the cam sensor are good. If I spray carb spray through a vacuum hose, it runs fine, but I’m getting nothing through the injectors.

What are the signals for the fuel injectors?

There are three signals which are necessary to operate the fuel injectors. These are the Ne, G, and IGf signals. Inside the ECU, the Ne Signal is used to produce an injection chive signal.

Question: What controls the fuel injector pulse? Ans: The engine control unit is the electronic brain that used to control the fuel injector pulse by gathering data from various sensors along the fuel line

What causes no injector pulse when engine is craking?

When these fuses blow, the system they support stops working, and the engine stops running. As a result, there is no injector pulse while craking.

There are three signals which are necessary to operate the fuel injectors. These are the Ne, G, and IGf signals. Inside the ECU, the Ne Signal is used to produce an injection chive signal.

Why is there no spark in my ignition?

An ignition module requires some type of external input in order to activate. If your vehicle stalls unexpectedly during operation and will not start again, it is likely because of loose or corroded electrical connections in the ignition module. In this case, check the switch, clean oxidized terminals, and replace broken wires if necessary.

How to diagnose no spark GM 3.8L?

For a list of all of the 3.8L articles in this site, check out the index: GM 3.8L Index Of Articles. You can find this tutorial in Spanish here: Cómo Probar El Módulo de Encendido y Sensor del Cigüeñal GM 3.8L (at: autotecnico-online.com ). Here is a little background information to help you diagnose this no spark condition.

What do I need to know about ignition control module?

This test will help you to pinpoint the problem to the ignition control module (ICM) or the crankshaft position sensor as the source of your car’s no start condition. Before starting the tests you must first check and verify that there’s NO SPARK present at any of the coil towers.

Is there a spark in the ignition module?

There is no spark coming out of any of the ignition coils sitting on top of the ignition module. You may have taken your ignition control module (ICM) to Auto Zone to test it and the friendly boys in orange say it’s good, yet the vehicle will not start (all major auto parts stores such as O’Reilly, Pepboys, etc., test ignition modules for free).

How does the crank sensor control the ignition module?

The ignition module starts to turn On and Off the ignition coils in their proper firing order to create spark, after the crank signal arrives. This On/Off action is the Switching signal referred to above. Under 400 RPM’s, the ignition control module controls spark timing without the help of the fuel injection computer.

Is there a spark from the fuel injector?

No spark from all of the Coil-On-Plug Ignition Coils. No fuel injector pulses from the fuel injector connectors as tested using a Noid Light.

What does no start on crank sensor mean?

P0335: No Crank Sensor Signal Detected. P0336: Inconsistent Crank Sensor Signal Detected. The thing to remember about having a failed crank sensor, is that if you have spark or fuel injector pulses, the crank sensor is OK and not the cause of your No Start Condition.