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.
How to diagnose a bad engine control module?
The best way to diagnose an engine control module fault is to understand its main responsibilities. Once you are aware of these primary functions, it becomes easier to determine what symptoms are bad PCM symptoms.
What does the code p0125 on the ECM mean?
The ECM monitors engine coolant temperature through a sensor after start-up. If no information is coming from the sensor after the engine is warmed up, this will trigger the code P0125. Possible causes include low coolant, stuck or bad thermostat, or faulty sensor.
Which is the most important timing value in the ECU?
The Crank index Position (CRiP) is perhaps the most important timing value in the ECU. The CRiP tells the ECU where the engine is in relation to TDC Cylinder #1. The CRiP is defined as the distance in crankshaft degrees, between the reference tooth when it is aligned with the crankshaft position sensor, and Top Dead Center Compression Number 1.
Which is better for spark timing PCM or ECM?
That means the (PCM) or (ECM) can control the spark and spark timing; on an individual per-cylinder basis. That gives better control over spark timing for more horsepower; better mileage and fewer emissions. Mechanically rotating distributor shaft Spark plug wires have always been the weak link in the whole ignition process.
Where is the coil on plug ignition system?
The most sophisticated of all ignition systems. The Coil On Plug Ignition System places an ignition coil; directly on the top of each spark plug. As a result, the Coil On Plug Ignition System; eliminates the need for distributors and spark plug wires.
The Crank index Position (CRiP) is perhaps the most important timing value in the ECU. The CRiP tells the ECU where the engine is in relation to TDC Cylinder #1. The CRiP is defined as the distance in crankshaft degrees, between the reference tooth when it is aligned with the crankshaft position sensor, and Top Dead Center Compression Number 1.