Pontiac Fiero 1988 Service Manual page 581

6E3-2 DRIVEABILITY AND EMISSIONS - FUEL INJECTION (PORT)
SECTION C - COMPONENT SYSTEMS
Table of Contents C-1
SECTION C1
ELECTRONIC CONTROL MODULE AND SENSORS
GENERAL DESCRIPTION
C1-1
ELECTRONIC CONTROL MODULE (ECM) . . C1-1
ECM Function C1-1
PROM C1-1
CALPAK C1-2
INFORMATION SENSORS C1-2
Engine Coolant Temperature S e n s o r . . . C1-2
MAT Sensor C I - 2
MAP Sensor C1-2
Oxygen (O2)
Sensor C1-3
Throttle Position Sensor (TPS) C1-3
Park/Neutral Switch (Auto Trans. Only) . C1-3
A/C "On" Signal C1-3
Vehicle Speed Sensor (VSS) C I - 3
Distributor Reference Signal C1-3
DIAGNOSIS C1-4
ECM
C1-4
PROM C1-4
EMC INPUTS CI 4
Coolant Temperature Sensor C1-4
MAT Sensor C1-4
0
2
Sensor C1-4
TPS C I - 5
MAP Sensor C1-5
VSS C1-5
P/N Switch C I - 5
A/C Request Signal C I - 5
Reference Signal C1-5
ON-CAR SERVICE C I - 5
ELECTRONIC CONTROL MODULE (ECM) . . C1-5
PROM/CALPAK C1-6
Functional Check C1-7
COOLANT SENSOR C1-7
MAP SENSOR C1-7
MAT SENSOR C I - 7
OXYGEN SENSOR C l - 8
THROTTLE POSITION SENSOR (TPS) C1-8
PARK/NEUTRAL SWITCH C1-9
PARTS INFORMATION C1-9
ECM QDR Check
Chart C-1 C1-10
Park/Neutral Switch Diagnosis
Chart C-1 A C1-12
MAP Output Check
Chart C-1 D C1-14
SECTION C2
FUEL CONTROL SYSTEM
GENERAL DESCRIPTION C2-1
PURPOSE C2-1
MODES OF OPERATION C2-1
Starting Mode C2-1
Clear Flood Mode C2-2
Run Mode C2-2
Acceleration Mode C2-2
Deceleration Mode C2-3
Battery Voltage Correction Mode C2-3
Fuel Cutoff Mode C2-3
FUEL CONTROL SYSTEM COMPONENTS C2-3
BASIC SYSTEM OPERATION C2-3
FUEL RAIL ASSEMBLY C2-4
Fuel Injector Assembly C2-4
Pressure Regulator Assembly C2-4
THROTTLE BODY ASSEMBLY C2-5
Idle Air Control (IAC) Valve Assembly . . C2-5
Throttle Position Sensor (TPS) C2-5
FUEL PUMP C2-6
DIAGNOSIS C2-6
FUEL CONTROL SYSTEM C2-6
IDLE AIR CONTROL VALVE C2-7
FUELSYSTEM PRESSURE TEST C2-7
ON-VEHICLE SERVICE C2-7
PORT FUEL INJECTION COMPONENTS . . . . C2-7
FUEL PRESSURE RELIEF PROCEDURE C2-7
PLENUM C2-7
FUEL RAIL ASSEMBLY C2-8
COLD START VALVE ASSEMBLY C2-10
FUEL PRESSURE CONNECTION ASSEMBLY . C2-10
FUEL BLOCK ASSEMBLY C2-11
PORT FUEL INJECTOR C2-11
PRESSURE REGULATOR ASSEMBLY C2-12
COLD START FUEL INJECTION SWITCH . . . C2-12
THROTTLE BODY ASSEMBLY C2-12
IDLE AIR CONTROL VALVE C2-13
FUEL PUMP RELAY C2-14
PARTS INFORMATION C2-14
Injector Balance Test
Chart C2-A C2-16
SECTION C3
EVAPORATIVE EMISSION CONTROL
GENERAL DESCRIPTION C3-1
PURPOSE C3-1
EVAPORATIVE EMISSION SYSTEM C3-1
RESULTS OF INCORRECT OPERATION C3-1
DIAGNOSIS C3-1
VISUAL CHECK OF CANISTER C3-1
FUNCTIONAL TESTS C3-2
Canister Purge Valve C3-2
ON-CAR SERVICE C3-2
FUEL VAPOR CANISTER C3-2
PARTS INFORMATION C3-2