5654089 | Genuine Cummins® ECM Electronic Control Module

An Electronic Control Module (ECM) — sometimes called an Engine Control Module — is a critical onboard computer in vehicles and equipment that controls and monitors the engine's operation. ECM Electronic Control Module ISX12N ISB6.7 ISL8.9 Engines: ISX12N ISB6.7 ISL8.9, 15N CM2380 M104B, 15N CM2380 M105B, 6.7N CM2380 D109B, B6.7N CM2380 B150B, ISL G CM2180, ISX12 G CM2180 EJ, ISX12N CM2380 X120B, L9N CM2380 L124B, L9N CM2380 L130B, L9N CM2380 L142B

General Specifications

Purpose & Function

The ECM acts as the “brain” of the engine, constantly collecting data from sensors and sending commands to control components like:

• Fuel injectors

• Turbocharger (if equipped)

• EGR valve (exhaust gas recirculation)

• Ignition timing (in gasoline engines)

• Throttle position / response

• Idle speed

• Emissions systems

Signs of a Bad Electronic Control Module

• Engine won’t start
• Poor performance or fuel economy
• Check Engine Light (CEL) stays on
• Irregular shifting (if ECM is linked to transmission)
• Fault codes (like P0600, P0606)

About Cummins

Cummins is a leading American manufacturer of diesel and natural gas engines, as well as power generation systems and emissions solutions. Founded in 1919 and headquartered in Columbus, Indiana, Cummins is known globally for its durable, high-performance engines used in trucks, buses, construction equipment, agriculture, and power systems.

The brand is widely respected for its innovation in clean diesel technology, including aftertreatment systems, turbochargers, and advanced electronics that help reduce emissions while maximizing engine efficiency and reliability.