3006706C91 | Genuine International® Engine Interface Module Assembly

Part Number: 3006706C91 Condition: New Manufacture/Brand: International Description: A "Module, Assembly Engine Interface" is an electronic control module (ECM) or interface unit used in trucks to manage and coordinate communication between the engine and other systems in the vehicle. Engine Interface Module Assembly I766/I767 2007 BB 11L & 13L Fits For ProStar Linehaul Conventional (Premium / Limited), 7700 Severe Service (built on or after 12/15/03), 7600 Severe Service (built on or after 4/1/02), 8600 Heavy Tractor Engine: I766/I767 2007 BB 11L & 13L Purpose: Function Description Signal Conversion Converts analog engine signals to digital CAN messages and vice versa Data Routing Routes engine data to the instrument cluster, ABS module, transmission, etc. Diagnostics Support Enables diagnostics tools to communicate with the engine via the OBD port Safety Interlocks Participates in shutdowns, limp mode, or fault response scenarios Power Management May handle power-on/reset sequencing for the engine module Signs of a Faulty Engine Interface Module Symptom Description Engine won’t start The module may fail to send/receive the signal needed to initiate engine startup. Loss of communication with ECM Diagnostic tools can't connect to the ECM. May show "ECM Not Detected" or similar errors. SPN/FMI fault codes Especially: SPN 639 FMI 2 – Loss of Communication SPN 625 FMI 9 – Data link error SPN 729 FMI 3/7 – EIM signal issues Dead instrument cluster No RPM, oil pressure, or temperature readings; gauges may not respond. Check Engine Light stays on or flashes Indicates communication or sensor processing issues. No response from throttle or transmission Signals from EIM to these systems may not be getting through. Erratic or no DPF regen cycles Because the EIM often relays exhaust/engine info to emissions systems. "No Data" from OBD port Techs can’t pull codes because the EIM bridges communication between the ECM and the diagnostic port. Intermittent power loss Especially during acceleration, shifting, or heavy load. About the Manufacturer – International / Navistar: International, a brand of Navistar International Corporation, is a leading American manufacturer of commercial trucks, buses, and diesel engines. With a history dating back to the early 1900s, International is known for producing durable and reliable vehicles used in freight, construction, and municipal operations. Navistar has built a strong reputation in the trucking industry by focusing on innovation, performance, and long-term dependability. Their vehicles and components are trusted by fleets and drivers across North America and beyond.