What is an ECU on a Honda Civic?

What is an ECU on a Honda Civic?

The ECU in your Honda Civic is critical to proper engine performance and efficiency. A Honda Civic’s engine control unit (ECU) is critical for proper engine performance.

Can a Honda ECM communicate with an ignition switch?

Valley-Hi Honda in Victorville, CA. OK they will have the ability and knowledge to communicate with this ECM if it is good and they would have checked fro power to the DLC so if they had no communication at all and not just that they were not able to program it you will need a new ECM/Ignition switch set.

What does lost communication with ECM / PCM mean?

Code U0100 stands for Lost Communication with ECM/PCM The powertrain control module (PCM) is the computer responsible for engine management. Like the other computers (known as modules) onboard your vehicle, the PCM communicates over a bus.

Can a PCM be installed in the same car?

Many PCMs appear to be exactly the same on the outside (same sized box and connectors) but may be wired or calibrated differently inside. If the wrong PCM is installed in a vehicle, it may run but probably won’t run well. Close enough isn’t good enough when it comes to replacing PCMs. It must be the correct replacement for the application.

How does the PCM communicate with the Powertrain Control Module?

Like the other computers (known as modules) onboard your vehicle, the PCM communicates over a bus. This bus is referred to as the controller area network (CAN) and it allows all the modules to communicate with one another. Powertrain Control Module. There are two CAN buses: CAN High and CAN low.

Why is my scan tool not working on my Honda Civic?

Look for a fuse that includes DLC its description. For 7th generation Civics, there is a fuse under the hood that protects the circuit for the data link connector (DLC). Power for the scan tool is supplied through this fuse. If the fuse is blown, the scan tool won’t get power and therefore won’t communicate with the ECU.

Valley-Hi Honda in Victorville, CA. OK they will have the ability and knowledge to communicate with this ECM if it is good and they would have checked fro power to the DLC so if they had no communication at all and not just that they were not able to program it you will need a new ECM/Ignition switch set.

Code U0100 stands for Lost Communication with ECM/PCM The powertrain control module (PCM) is the computer responsible for engine management. Like the other computers (known as modules) onboard your vehicle, the PCM communicates over a bus.

What causes a Honda HD to stop communicating?

Fuses 6, 7, and 21 in that fuse box are used by the MICU – if any are blown it could cause the HDS to stop communicating.

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