Component Descriptions - Mazda 626 MX-6 Workshop Manual

4B
FUEL SYSTEM

COMPONENT DESCRIPTIONS

Component
Engine control unit Detects signals from input sensors and
switches;-controls solenoid valve (Pres­
sure regulator control)
Ignition switch Sends engine cranking signal to control
(ST position) unit
Intake air thermo
Detects intake air temperature;
sensor
sends signal to control unit
Ne rotor and pick-up Detects crank angle at 30° intervals;
sends signal to control unit
Pressure regulator
Adjusts fuel pressure supplied to injectors
Solenoid valve (Pres­ Controls vacuum line to pressure
sure regulator
regulator
control)
Throttle sensor Detects throttle valve opening angle;
sends signal to control unit
Water thermo sensor Detects coolant temperature;
sends signal to control unit
Function
Installed in air flow meter
Engine speed signal
Closes vacuum line when hot
Installed on throttle body
Application
Remarks New Previous
model
O
O
o
o
o
0
o
o
86U04B-078
model
O
O
o
X
o
0
o
o