Keihin Indiana Precision Technology (IPT) is a primary manufacturer and design partner for Honda Engine Control Modules (ECM/PCM).

Manufacturing Overview#

While Keihin is the primary supplier for the majority of Honda engine management systems, manufacturing responsibilities have historically been distributed among several specialized automotive electronics firms.

Note

Honda refers to the Engine Control Unit (ECU) as the Engine Control Module (ECM) or Powertrain Control Module (PCM) in official service documentation.

Supplier Variations#

Technical documentation and hardware teardowns indicate that while Keihin maintains the majority of the market share for Honda engine management, specific models utilize hardware from alternative suppliers.

• Keihin IPT: Primary supplier for the majority of Honda/Acura engine management systems.
• Motorola: Documented as the manufacturer for specific powertrain control modules, such as the 1998 Honda Accord ECM/PCM.

Technical Resources#

For further information regarding Keihin's automotive division and their current product lineup, refer to the official corporate documentation:

• Keihin IPT Official Website0