Dodge 2000 DURANGO - Page 747

FUEL INJECTION SYSTEM
TABLE OF CONTENTS
page page
DESCRIPTION AND OPERATION
POWERTRAIN CONTROL MODULE (PCM) .....28
MODES OF OPERATION ...................29
AUTOMATIC SHUTDOWN (ASD) RELAY
SENSE—PCM INPUT ....................31
BATTERY VOLTAGE—PCM INPUT............31
BRAKE SWITCH—PCM INPUT...............31
ENGINE COOLANT TEMPERATURE
SENSOR—PCM INPUT ...................32
FIVE VOLT SENSOR SUPPLIES—PRIMARY
AND SECONDARY ......................32
FUEL LEVEL SENSOR—PCM INPUT ..........32
IGNITION CIRCUIT SENSE—PCM INPUT ......32
INTAKE MANIFOLD AIR TEMPERATURE
SENSOR—PCM INPUT ...................32
MANIFOLD ABSOLUTE PRESSURE (MAP)
SENSOR—PCM INPUT ...................33
OIL PRESSURE SENSOR—PCM INPUT .......34
OXYGEN SENSOR (O2S)—PCM INPUT........34
POWER GROUNDS .......................35
POWER STEERING PRESSURE SWITCH—
PCM INPUT ...........................35
SENSOR RETURN—PCM INPUT.............36
SIGNAL GROUND—PCM INPUT .............36
THROTTLE POSITION SENSOR (TPS)—PCM
INPUT................................36
VEHICLE SPEED AND DISTANCE—PCM
INPUT................................36
AUTO SHUTDOWN (ASD) RELAY—PCM
OUTPUT ..............................36
CCD BUS (+/-) CIRCUITS-PCM OUTPUTS ......37
DATA LINK CONNECTOR—PCM INPUT AND
OUTPUT ..............................37
FUEL INJECTORS—PCM OUTPUT ...........37
FUEL PUMP RELAY-PCM OUTPUT ...........37
IDLE AIR CONTROL (IAC) MOTOR—PCM
OUTPUT ..............................37
OXYGEN SENSOR HEATER RELAYS—PCM
OUTPUT ..............................38
RADIATOR COOLING FAN RELAY—PCM
OUTPUT ..............................38
THROTTLE BODY ........................39
DIAGNOSIS AND TESTING
VISUAL INSPECTION—3.9/5.2/5.9L ENGINES . . . 39
ASD AND FUEL PUMP RELAYS..............42
THROTTLE BODY MINIMUM AIR FLOW
CHECK PROCEDURE....................43
REMOVAL AND INSTALLATION
AUTOMATIC SHUTDOWN (ASD) RELAY .......44
FUEL PUMP RELAY.......................44
OXYGEN SENSOR HEATER RELAYS .........45
THROTTLE BODY—3.9/5.2/5.9L ENGINES......45
THROTTLE BODY—4.7L V-8 ENGINE .........45
THROTTLE POSITION SENSOR (TPS)—3.9/
5.2/5.9L ENGINES.......................46
THROTTLE POSITION SENSOR (TPS)—4.7L
V-8 ENGINE ...........................46
IDLE AIR CONTROL (IAC) MOTOR—3.9/5.2/
5.9L ENGINES .........................47
IDLE AIR CONTROL (IAC) MOTOR—4.7L V–8
ENGINE ..............................48
MANIFOLD ABSOLUTE PRESSURE (MAP)
SENSOR—3.9/5.2/5.9L ENGINES ...........48
MANIFOLD ABSOLUTE PRESSURE (MAP)
SENSOR—4.7L V–8 ENGINE ..............49
POWERTRAIN CONTROL MODULE (PCM) .....49
OXYGEN SENSOR........................50
AIR CLEANER ELEMENT (FILTER) ...........50
ENGINE COOLANT TEMPERATURE
SENSOR—3.9/5.2/5.9L ENGINES ...........50
ENGINE COOLANT TEMPERATURE
SENSOR—4.7L V-8 ENGINE ...............51
INTAKE MANIFOLD AIR TEMPERATURE
SENSOR—3.9/5.2/5.9L ENGINES ...........52
INTAKE MANIFOLD AIR TEMPERATURE
SENSOR—4.7L V-8 ENGINE ...............53
POWER STEERING PRESSURE SWITCH ......54
SPECIFICATIONS
TORQUE CHART .........................54
SPECIAL TOOLS
FUEL SYSTEM...........................54
DN FUEL SYSTEM 14 - 27