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MODEL SELECTION INDEX
VT SERIES I - COMMODORE, CALAIS SERVICE INFORMATION
SECTION 6C2-1 - GENERAL INFORMATION - V8 ENGINE
1. GENERAL DESCRIPTION
1.1 POWERTRAIN CONTROL MODULE (PCM)
PCM SECURITY LINK
PCM MEMORY FUNCTIONS
1.2 ENGINE INFORMATION SENSORS
ENGINE COOLANT TEMPERATURE (ECT) SENSOR
LH AND RH HEATED EXHAUST GAS OXYGEN SENSORS
INTAKE AIR TEMPERATURE (IAT) SENSOR
MASS AIR FLOW (MAF) SENSOR
THROTTLE POSITION (TP) SENSOR
VEHICLE SPEED SENSOR (VSS)
A/C REQUEST SIGNAL
BATTERY VOLTAGE
CRANKSHAFT REFERENCE SIGNAL
ENGINE COOLING FAN SIGNAL
TRANSMISSION FLUID PRESSURE (TFP) SWITCH ASSEMBLY
THEFT DETERRENT INPUT SIGNAL
CAMSHAFT POSITION SIGNAL
1.3 TRANSMISSION INPUT INFORMATION SENSORS AND SIGNALS
INFORMATION SENSORS
TRANSMISSION FLUID PRESSURE (TFP) SWITCH ASSEMBLY
TRANSMISSION FLUID TEMPERATURE (TFT) SENSOR
THROTTLE POSITION (TP) SENSOR
TRANSMISSION ECONOMY/POWER SWITCH
VEHICLE SPEED SENSOR (VSS)
TRANSMISSION PASS-THRU CONNECTOR
1.4 TRANSMISSION OUTPUTS CONTROLLED BY THE PCM
PRESSURE CONTROL SOLENOID
SHIFT SOLENOIDS
3-2 SHIFT SOLENOID
TORQUE CONVERTER CLUTCH (TCC) SOLENOID VALVES
TCC "PWM" SOLENOID OPERATION
1.5 FUEL CONTROL SYSTEM
PURPOSE
FUNCTION
MASS AIR FLOW SYSTEM
MODES OF OPERATION
SHORT TERM FUEL TRIM
LONG TERM FUEL TRIM
LONG TERM FUEL TRIM CELL
FUEL SYSTEM OPERATION
SYSTEM COMPONENTS
1.6 IDLE AIR CONTROL (IAC) VALVE
1.7 IGNITION SYSTEM
PURPOSE
1.8 ELECTRONIC SPARK TIMING (EST)
CRANKSHAFT REFERENCE PCM INPUT
CRANKSHAFT REFERENCE EARTH
BYPASS CONTROL
EST OUTPUT
RESULTS OF INCORRECT OPERATION
1.9 KNOCK SENSOR (KS) SYSTEM
PURPOSE
OPERATION
1.10 EVAPORATIVE EMISSION CONTROL
RESULTS OF INCORRECT OPERATION
1.11 ELECTRIC COOLING FAN
ENGINE COOLING FAN LOW SPEED
ENGINE COOLING FAN HIGH SPEED
1.12 A/C CLUTCH CONTROL
A/C CLUTCH CONTROL WITH ELECTRIC CLIMATE CONTROL
A/C CLUTCH CONTROL WITH NON ECC AIR CONDITIONING
1.13 ABBREVIATIONS AND GLOSSARY OF TERMS