[ Content | Sidebar ]

Posts tagged Electronic Control Unit

1990 Toyota Supra MA70 Fuel System Circuit Diagram

The following circuit diagram shows 1990 Toyota Supra MA70 Fuel System Circuit Diagram. The ECU receives signals from various sensors indicating changing engine operating conditions such as: Exhaust oxygen content, Intake air volume, Intake air temperature, Coolant temperature, Engine rpm, Acceleration / deceleration etc.

BMW E12 L-Jetronic Fuel Injection Systems Schematic Diagram

The following article discuss on L-Jetronic Fuel Injection Systems for BMW E12 which covers following topics: Basic Engine Combustion Process, Combustion Requirements, Fuel Delivery Implementations, Electronic Fuel Injection System Components, L-Jetronic System, The L-Jetronic System – Control Unit (ECU) takes sensor information such as AFM flow and temperature, Engine RPM (from ignition), Warm up information (from coolant temperature sensor), Throttle mode (idle and WOT switches), O2 sensor in Lambda systems.

Jeep Cherokee’88 Engine Cooling Fan Circuit and Wiring Diagram

The 1988 Jeep Cherokee, Comanche, and Wagoneer 4.0L engine series use an auxiliary fan. The auxiliary fan is controlled by a relay mounted on the left inner fender panel. When the A/C (if equipped) is turned on, the Electronic Control Unit (ECU) grounds the A/C relay coil allowing current to flow through it. This activates the A/C relay which then supplies current to the A/C clutch, fan diode assembly and cooling fan relay. Find more information about 1988 Jeep Cherokee Engine Cooling Fan Circuit and Wiring Diagram here