How does the PCM control the fuel pump?
After the ignition switch is returned to the “ON” position, power to the fuel pump is supplied through the fuel pump relay. The PCM monitors engine speed and opens the fuel pump relay ground circuit if the engine speed drops below 120 rpm.
How does the fuel pump relay work in a car?
When the ignition switch is turned ON, the Electronic Engine Control (EEC) power relay is energized, providing power to the fuel pump relay for 1 to 2 seconds through the Powertrain Control Module (PCM) and an Inertia Fuel Shutoff (IFS) switch.
What happens if the powertrain control module is not working?
The fuel injectors are responsible for allowing fuel to be injected into the cylinders and the timing of these injectors are controlled by the ECU. If the ECU is not working, then the valves on the fuel injectors may stay closed which will prevent fuel from entering the cylinders. What are the symptoms of a bad powertrain control module?
How is the fuel pump controlled by the ECU?
If both the fuel injectors and fuel pump are in working order, then you may want to check the condition of the ECU. The fuel injectors are responsible for allowing fuel to be injected into the cylinders and the timing of these injectors are controlled by the ECU.
Is the fuel pump relay controlled by the PCM?
Consequently, the fuel pump relay is usually controlled by, the ignition or powertrain control module (PCM). As a result, when switched on, the fuel pump relay; will provide current to the fuel pump, so that it may function. Therefore, any faults with it, can cause fuel pump issues.
When is the fuel pump relay turned on?
The fuel pump relay is activated whenever the ignition is turned on. A fuel pump relay functions primarily to maintain a consistent voltage supply to the fuel pump. The ignition or powertrain control module (PCM) usually controls the fuel pump relay.
Where is hpcm2 located on a GM volt?
HPCM2 is essentially the most important module in the Volt’s management system as (as you’ve listed) it integrates with so many systems and activities. It is located under the right front passenger seat and If you move the seat all the way back and flip up the small carpet cutout you can easily access it.
What is part number for hybrid powertrain control module 2?
I believe the part number for the hybrid powertrain control module 2 is 22994053. There is a Lear wiring diagram on the internet showing how the HPCM2 hooks up to the Battery Charger Control Module. http://media3.ev-tv.me/ChevyVoltLearChargerOperations.pdf
Why do we need electronic fuel pump control?
Electronic module control has revolutionised the modern engine fuel delivery system by enabling more precise fuel control, better reliability and lower NVH levels. This additional electronic control means diagnosing fuel delivery system faults require a blended approach of both mechanical and electrical checks to ensure accurate diagnosis.
How does the fuel pump work on a Ford truck?
On late model Fords, there is a fuel pressure sensor but not on your truck. The PCM keeps the fuel pump relay energized for a second or two while the engine is cranking, then cuts it off the relay the engine does not start. If the engine starts, it keeps energizing the relay to run the pump.
Is there no power to the fuel pump?
No power to the fuel pump and the fuel relay is not getti… Q: No power to the fuel pump and the fuel relay is not getting power. My car has 190000 miles.
How does the PCM work in a car?
Many of your car’s functions are controlled by the powertrain control module (PCM), which works in conjunction with the engine control module (ECM) and transmission control module (TCM) to adjust engine timing, the air to fuel ratio, and other systems. So before we talk about how to test a PCM, here are some common symptoms of a PCM failure.
Who is pump measure control and what do they do?
We are Pump Measure Control, a premier manufacturer of high-speed fuel dispensing equipment. We have over 35 years experience in the industry and are dedicated to providing our customers with quality fuel dispensing and metering solutions.
Where can I buy a Ford fuel pump?
Only 8 left in stock – order soon. Ships from and sold by FAS6125. In Stock. Sold by CE Showroom and ships from Amazon Fulfillment. FREE Shipping on orders over $25.00. Details In Stock. Sold by CE Showroom and ships from Amazon Fulfillment. FREE Shipping on orders over $25.00. Details