Pontiac Fiero 1988 Service Manual page 454

DRIVEABILITY AND EMISSIONS - FUEL INJECTION (TBI) 6E2-3
FUNCTIONAL TESTS
Canister Purge Valve . C3-2
ON-CAR SERVICE . . . . . . . . . . . . . . . . . C3-2
FUEL VAPOR CANISTER . . . . . . . . . . . . . . . C3-2
PARTS INFORMATION . . . . . . . . . . . . . . . . . C3-2
SECTION C4
DIRECT IGNITION SYSTEM / EST
GENERAL DESCRIPTION C4-1
SYSTEM OPERATION C4-1
SYSTEM COMPONENTS . . . . . . . . . . . . . . . C4-1
Crankshaft Sensor C4-1
Ignition Coils C4-2
"DIS" Module C4-2
Electronic Spark Timing (EST) . . . . . . . . . C4-2
DIAGNOSIS C4-3
SYSTEM DIAGNOSIS . . . . . . . . . . . . . . . . . . C4-3
CHECKING EST PERFORMANCE C4-3
Code 12 C4-3
Code42 C4-3
Setting Timing . . . . . . . . . . . . . . . . . . . . C4-3
ON-CAR SERVICE C4-3
DIS ASSEMBLY C4-3
CRANKSHAFT SENSOR . . . . . . . . . . . . . . . . C4-3
IGNITION COIL C4-4
IGNITION M O D U L E . . . . . . . . . . . . . . . . . . . C4-4
PARTS INFORMATION C4-4
"DIS" Misfire At Idle
Chart C-4D-1 C4-6
"DIS" Misfire Under Load
Chart C-4D-2 C4-8
SECTION C7
EXHAUST GAS RECIRCULATION (EGR) SYSTEM
GENERAL DESCRIPTION C7-1
PURPOSE C7-1
OPERATION C7-1
NEGATIVE BACKPRESSURE VALVE C7-1
EGR VALVE IDENTIFICATION C7-2
DIAGNOSIS C7-2
RESULTS OF INCORRECT OPERATION C7-2
ON-CAR SERVICE C7-2
EGR VALVE C7-2
PARTS INFORMATION C7-3
Exhaust Gas Recirculation (EGR) Check
(Non-ECM Controlled)
Chart C-7A C7-4
SECTION C8
TRANSMISSION CONVERTER CLUTCH SYSTEM
GENERAL DESCRIPTION . . . . . . . . . . . . . . . . . C8-1
PURPOSE . . . . . . . . . . . . C8-1
OPERATION C8-1
CIRCUIT DESCRIPTION C8-1
DIAGNOSIS C8-1
ON-CAR SERVICE C8-2
SHIFT LIGHT . . . . . . . . . . . . . . . . . C8-2
DESCRIPTION C8-2
DIAGNOSIS C8-2
ON-CAR SERVICE C8-2
PARTS INFORMATION C8-2
125C Transmission Converter Clutch (TCC)
Chart C-8A C8-4
Manual Transmission (M/T) Shift Light Check
Chart C8-B C8-6
SECTION C10
ECM CONTROLED AIR CONDITIONING
GENERAL DISCRETION C10-1
OPERATION C10-1
DIAGNOSIS C10-1
ON-CAR SERVICE C10-1
A/C Clutch Control
Chart C-10 C10-2
SECTION C12
ELECTRIC COOLING FAN
GENERAL DESCRIPTION C12-1
OPERATION . . . . . . . . . . . . . . . . . . . . . . . . C12-1
DIAGNOSIS C12-1
ON-CAR SERVICE . . . . . . . . . . . . . . . . . . . . . . C12-1
PARTS INFORMATION . CI 2-1
Engine Cooling Fan
ChartC-12 CI2-2
SECTION C13
POSITIVE CRANKCASE VENTILATION (PCV)
GENERAL DESCRIPTION C13-1
DIAGNOSIS C13-1
RESULTS OF INCORRECT OPERAITON . . . . . C13-1
FUNCTIONAL CHECK OF PCV VALVE . . C13-1
ON-CAR SERVICE . . . . . . . . . . . . . . . . . . . . . . CI 3-2
PARTS INFORMATION . . . . . . . . . . . . . . . . . . C13-2