MX-3 V6-1844cc 1.8L DOHC (1993)
^ Atmospheric pressure sensor
^ EGR position sensor
^ Feedback system
^ Intake air thermosensors
^ Oxygen sensor
^ Throttle sensor
^ ater thermosensor
INPUTS/OUTPUTS
Individual components function as either input devices or output devices. Input devices modify or generate voltage signals that the ECU "reads".
Output devices are components operated or controlled by the ECU. Not all of these devices are monitored by the on-board diagnostic system.
Some input signals come from devices that are not specifically ECU sensor devices. For example, the A/C amplifier signals the ECU when the air
conditioning is turned "ON", for idle speed control (to compensate for the additional load on the engine). In the case of many output devices
(relays and solenoids), the ECU's output function is simply to make or break the ground circuit to turn a device "ON" or "OFF". The following is a
list of input and output devices and signals.
INPUTS
^ A/C switch
^ Airflow meter
^ Atmospheric pressure sensor (built into the ECU)
^ Crankshaft pulley sensor (crank angle and engine speed)
^ Distributor sensors
-G1 signal (crankshaft position)
-Ne1 signal (engine speed)
^ EGR position sensor
^ Electrical load inputs
Headlight switch
Rear window defroster switch
Heater - A/C blower switch
^ Idle switch
^ Ignition switch ("START" position - engine cranking)
^ Intake air thermosensor
^ Knock sensor
^ Oxygen sensor
-Left side
-Right side
^ Power steering pressure switch
^ Stop light switch
^ Test connector
^ Throttle sensor
^ Vehicle speed sensor
^ Water thermosensor (engine fan)
^ Water thermosensor (EGI)
OUTPUTS
^ A/C relay/cut-off
^ Bypass air control (BAC) valve
-Idle speed control (ISC) valve
^ Fuel injectors/injection timing
^ Igniter
^ Malfunction indicator lamp (MIL)
^ Oxygen sensor heater - right side
^ Oxygen sensor heater - left side
^ Solenoid valves
EGR - Vacuum side
EGR - Vent side
VRIS #1 [1]
VRIS #2 [1]
Pressure regulator control
Purge control
[1] Variable Resonance Induction System