The ECU is typically enclosed in a durable metal housing with multiple high-density multi-pin plug connectors. These connectors are split into distinct blocks—often referred to as the Engine Side (Connectors going to sensors/actuators on the block) and the Vehicle/Chassis Side (Connectors handling power, ignition, and dash clusters). Power Supply and Ground Pinouts (Top Connector)
These 5V reference sensors occupy pins like B-17 (TPS signal) and B-09 (boost signal). Their physical arrangement on the top view often places them adjacent to sensor ground pins (B-23) to minimize electromagnetic interference. mitsubishi 4m51 ecu pinout top
The ECU for the 4M51 is typically located behind the glove box or under the driver's seat (depending on the chassis). It usually has (often colored or numbered). The ECU is typically enclosed in a durable