Mazda MX-3 silhouetteMX-3

OUTLINE - COMPONENT DESCRIPTIONS

F2-11spec table

COMPONENT DESCRIPTIONS

Component Descriptions

A/C relay
FunctionControls A/C compressor magnetic clutch
Remarks-
Air cleaner
FunctionFilters air entering throttle body
Remarks-
Air valve
FunctionSupplies bypass air into intake manifold (engine cold)
RemarksEngine speed increased to shorten warm-up period; Thermowax type; Installed in BAC valve
Barometric pressure sensor
FunctionDetects barometric pressure; sends signal to ECM
RemarksIn ECM
Brake switch
FunctionDetects braking; sends signal to ECM
Remarks-
Bypass air control (BAC) valve
FunctionSupplies bypass air into intake manifold
RemarksConsist of air valve and idle air control valve
Camshaft position sensor (In distributor) SGC signal SGT signal
FunctionDetects No.1 cylinder TDC; sends signal to ECM (SGC signal). Detects crank angle at 60 degree intervals; sends signal to ECM (SGT signal)
RemarksInstalled in distributor
Charcoal canister
FunctionStores fuel tank fumes (engine stopped)
Remarks-
Check-and-cut valve
FunctionPrevents fuel from flowing into charcoal canister
Remarks
Check valve (two-way)
FunctionControls pressure in fuel tank
RemarksTwo-way type
Crankshaft position sensor NE signal
FunctionDetects crank angle 60 degree intervals; sends signal to ECM
RemarksInstalled at crankshaft pulley
Data link connector
FunctionConcentrated service connector terminals: 1. CIS self-diagnosis; 2. Initial set; 3. Fuel pump check; 4. Switch and heated oxygen sensor monitor; 5. Engine speed output; 6. Supply battery positive voltage; 7. Ground
Remarks25-pin (located near left suspension mounting block): 1. FEN terminal; 2. TEN terminal; 3. F/P terminal; 4. MEN terminal; 5. IG terminal; 6. +B terminal; 7. GND terminal
EGR solenoid valve (vent)
FunctionControls vacuum to EGR control valve (Open air side)
RemarksControlled by duty signal from ECM
EGR solenoid valve (vacuum)
FunctionControls vacuum to EGR control valve (Vacuum side)
RemarksControlled by duty signal from ECM
Engine control module (ECM)
FunctionControls operation of following: 1. A/C (Cut-off); 2. On-board diagnostic function; 3. Fuel injection system; 4. Idle air control; 5. Ignition system (Electronic spark advance); 6. Monitor function; 7. Purge control system; 8. VRIS control system; 9. EGR control system; 10. Pressure regulator control system; 11. Coolant fan control system; 12. Condenser fan control system
Remarks1. A/C relay; 2. Self-diagnosis Checker; 3. Fuel injector; 4. Idle air control valve; 5. Ignition control module; 6. Monitor lamp (Self-Diagnosis Checker); 7. Purge solenoid valve; 8. VRIS solenoid valve; 9. EGR solenoid valve; 10. PRC solenoid valve; 11. Coolant fan relay; 12. Condenser fan relay

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