
- •GENERAL INFORMATION
- •FUEL REQUIREMENTS
- •VEHICLES WITHOUT TURBOCHARGED ENGINES
- •VEHICLES WITH 2.2L 16 VALVE ENGINES
- •THE FOLLOWING IS APPLICABLE TO ALL VEHICLES
- •FUEL DELIVERY SYSTEM
- •FUEL HOSES, CLAMPS, AND QUICK CONNECT FITTINGS
- •HOSES AND CLAMPS
- •QUICK CONNECT FITTINGS
- •FUEL PUMP ASSEMBLY
- •FUEL SYSTEM PRESSURE
- •MECHANICAL MALFUNCTIONS
- •FUEL PUMP REMOVAL
- •FUEL PUMP STRAINER SERVICE
- •FUEL PUMP INSTALLATION
- •REMOVAL
- •INSTALLATION
- •CHASSIS FUEL TUBES
- •FUEL TANKS
- •GENERAL INFORMATION
- •FUEL TANK FILLER TUBE
- •PRESSURE VACUUM FILLER CAPS
- •FUEL SYSTEM PRESSURE RELEASE PROCEDURE
- •FUEL TANK
- •DRAINING FUEL TANK
- •FUEL TANK CAPACITIES
- •FUEL TANK REMOVAL
- •INSTALLATION
- •FUEL PUMP
- •FUEL RESERVOIR
- •FUEL LEVEL SENDING UNIT
- •DIAGNOSIS
- •REMOVAL
- •INSTALLATION
- •REMOVAL
- •INSTALLATION
- •ACCELERATOR PEDAL AND THROTTLE CABLE
- •ACCELERATOR PEDAL
- •REMOVAL
- •INSTALLATION
- •THROTTLE CABLE
- •REMOVAL
- •INSTALLATION
- •GENERAL INFORMATION
- •SYSTEM DIAGNOSIS
- •ENGINE CONTROLLER
- •MODES OF OPERATION
- •FUEL PRESSURE REGULATOR
- •THROTTLE BODY
- •FUEL SYSTEM DIAGRAM
- •VISUAL INSPECTION
- •ON BOARD DIAGNOSTICS
- •MONITORED CIRCUITS
- •HIGH AND LOW LIMITS
- •FAULT CODE DESCRIPTION
- •SYSTEMS TEST
- •OBTAINING FAULT CODES
- •STATE DISPLAY TEST MODE
- •STATE DISPLAY INPUTS AND OUTPUTS
- •STATE DISPLAY SENSORS
- •CIRCUIT ACTUATION TEST MODE
- •OBTAINING CIRCUIT ACTUATION TEST
- •THROTTLE BODY MINIMUM AIR FLOW CHECK PROCEDURE
- •IGNITION TIMING PROCEDURE
- •IDLE SPECIFICATIONS
- •FAULT CODE DESCRIPTION
- •FAULT CODE DESCRIPTION
- •FUEL LINES AND HOSES
- •FUEL SYSTEM PRESSURE RELEASE PROCEDURE
- •THROTTLE BODY
- •REMOVAL
- •INSTALLATION
- •FUEL FITTING
- •REMOVAL
- •INSTALLATION
- •FUEL PRESSURE REGULATOR
- •REMOVAL
- •INSTALLATION
- •FUEL INJECTOR
- •REMOVAL
- •INSTALLATION
- •THROTTLE POSITION SENSOR
- •REMOVAL
- •INSTALLATION
- •AUTOMATIC IDLE SPEED (AIS) MOTOR
- •REMOVAL
- •INSTALLATION
- •MANIFOLD ABSOLUTE PRESSURE SENSOR
- •REMOVAL
- •CANISTER PURGE SOLENOID
- •REMOVAL
- •INSTALLATION
- •ENGINE CONTROLLER SERVICE
- •OXYGEN SENSOR (O2 SENSOR)
- •GENERAL INFORMATION
- •SYSTEM DIAGNOSIS
- •ENGINE CONTROLLER
- •MODES OF OPERATION
- •IGNITION SWITCH ON (ZERO RPM) MODE
- •CRUISE OR IDLE MODE
- •ACCELERATION MODE
- •DECELERATION MODE
- •WIDE OPEN THROTTLE MODE
- •IGNITION SWITCH OFF MODE
- •THROTTLE BODY
- •FUEL SUPPLY CIRCUIT
- •FUEL INJECTORS AND FUEL RAIL ASSEMBLY
- •FUEL PRESSURE REGULATOR
- •FUEL SYSTEM DIAGRAM
- •VISUAL INSPECTION
- •ON BOARD DIAGNOSTICS
- •MONITORED CIRCUITS
- •HIGH AND LOW LIMITS
- •FAULT CODE DESCRIPTION
- •FAULT CODE DESCRIPTION
- •SYSTEM TESTS
- •OBTAINING FAULT CODES
- •STATE DISPLAY TEST MODE
- •STATE DISPLAY INPUTS AND OUTPUTS
- •STATE DISPLAY SENSORS
- •CIRCUIT ACTUATION TEST MODE
- •OBTAINING CIRCUIT ACTUATION TEST
- •THROTTLE BODY MINIMUM AIR FLOW CHECK PROCEDURE
- •IGNITION TIMING PROCEDURE
- •IDLE SPECIFICATIONS
- •THROTTLE BODY
- •FUEL SYSTEM PRESSURE RELEASE PROCEDURE
- •THROTTLE POSITION SENSOR (TPS)
- •REMOVAL
- •INSTALLATION
- •AUTOMATIC IDLE SPEED (AIS) MOTOR
- •REMOVAL
- •INSTALLATION
- •THROTTLE BODY REMOVAL
- •FUEL INJECTOR RAIL ASSEMBLY
- •REMOVAL
- •INSTALLATION
- •FUEL INJECTOR
- •REMOVAL
- •INSTALLATION
- •FUEL PRESSURE REGULATOR
- •REMOVAL
- •INSTALLATION
- •MANIFOLD ABSOLUTE PRESSURE (MAP) SENSOR SERVICE
- •WASTEGATE SOLENOID AND CANISTER PURGE SOLENOID
- •ENGINE CONTROLLER SERVICE
- •HEATED OXYGEN SENSOR (O2 SENSOR)
- •GENERAL INFORMATION
- •SYSTEM DIAGNOSIS
- •ENGINE CONTROLLER
- •MODES OF OPERATION
- •IGNITION SWITCH ON (ZERO RPM) MODE
- •CRUISE OR IDLE MODE
- •ACCELERATION MODE
- •DECELERATION MODE
- •WIDE OPEN THROTTLE MODE
- •IGNITION SWITCH OFF MODE
- •THROTTLE BODY
- •FUEL SUPPLY CIRCUIT
- •FUEL INJECTORS AND FUEL RAIL ASSEMBLY
- •FUEL PRESSURE REGULATOR
- •FUEL SYSTEM DIAGRAM
- •VISUAL INSPECTION
- •ON BOARD DIAGNOSTICS
- •MONITORED CIRCUITS
- •HIGH AND LOW LIMITS
- •FAULT CODE DESCRIPTION
- •FAULT CODE DESCRIPTION
- •SYSTEM TESTS
- •OBTAINING FAULT CODES
- •STATE DISPLAY TEST MODE
- •STATE DISPLAY INPUTS AND OUTPUTS
- •STATE DISPLAY SENSORS
- •CIRCUIT ACTUATION TEST MODE
- •OBTAINING CIRCUIT ACTUATION TEST
- •THROTTLE BODY MINIMUM AIR FLOW CHECK PROCEDURE
- •IGNITION TIMING PROCEDURE
- •IDLE SPECIFICATIONS
- •THROTTLE BODY
- •FUEL SYSTEM PRESSURE RELEASE PROCEDURE
- •THROTTLE POSITION SENSOR (TPS)
- •REMOVAL
- •INSTALLATION
- •AUTOMATIC IDLE SPEED (AIS) MOTOR
- •REMOVAL
- •INSTALLATION
- •THROTTLE BODY REMOVAL
- •INSTALLATION
- •FUEL INJECTOR RAIL ASSEMBLY
- •REMOVAL
- •INSTALLATION
- •FUEL INJECTORS
- •REMOVAL
- •INSTALLATION
- •FUEL PRESSURE REGULATOR
- •REMOVAL
- •INSTALLATION
- •MANIFOLD ABSOLUTE PRESSURE (MAP) SENSOR SERVICE
- •WASTEGATE AND CANISTER PURGE SOLENOID SERVICE
- •ENGINE CONTROLLER SERVICE
- •HEATED OXYGEN SENSOR (O2 SENSOR)
- •GENERAL INFORMATION
- •SYSTEM DIAGNOSIS
- •ENGINE CONTROLLER
- •MODES OF OPERATION
- •THROTTLE BODY
- •FUEL SUPPLY CIRCUIT
- •FUEL PRESSURE REGULATOR
- •FUEL SYSTEM DIAGRAM
- •VISUAL INSPECTION
- •ON BOARD DIAGNOSTICS
- •MONITORED CIRCUITS
- •HIGH AND LOW LIMITS
- •FAULT CODE DESCRIPTION
- •FAULT CODE DESCRIPTION
- •SYSTEM TESTS
- •OBTAINING FAULT CODES
- •STATE DISPLAY TEST MODE
- •STATE DISPLAY INPUTS AND OUTPUTS
- •STATE DISPLAY SENSORS
- •CIRCUIT ACTUATION TEST MODE
- •OBTAINING CIRCUIT ACTUATION TEST
- •THROTTLE BODY MINIMUM AIR FLOW CHECK PROCEDURE
- •IDLE SPECIFICATIONS
- •IGNITION TIMING PROCEDURE
- •THROTTLE BODY SERVICE
- •THROTTLE BODY
- •FUEL SYSTEM PRESSURE RELEASE PROCEDURE
- •THROTTLE POSITION SENSOR
- •REMOVAL
- •INSTALLATION
- •AUTOMATIC IDLE SPEED (AIS) MOTOR
- •REMOVAL
- •INSTALLATION
- •FUEL INJECTOR RAIL ASSEMBLY
- •REMOVAL
- •INSTALLATION
- •FUEL PRESSURE REGULATOR SERVICE
- •REMOVAL
- •INSTALLATION
- •FUEL INJECTORS
- •REMOVAL
- •INSTALLATION
- •MANIFOLD ABSOLUTE PRESSURE (MAP) SENSOR
- •CANISTER PURGE SOLENOID SERVICE
- •ENGINE CONTROLLER
- •HEATED OXYGEN SENSOR (O2 SENSOR)
- •GENERAL INFORMATION
- •SYSTEM DIAGNOSIS
- •ENGINE CONTROLLER
- •MODES OF OPERATION
- •THROTTLE BODY
- •FUEL SUPPLY CIRCUIT
- •FUEL INJECTORS AND FUEL RAIL ASSEMBLY
- •FUEL PRESSURE REGULATOR
- •FUEL SYSTEM DIAGRAM
- •VISUAL INSPECTION
- •ON BOARD DIAGNOSTICS
- •MONITORED CIRCUITS
- •HIGH AND LOW LIMITS
- •FAULT CODE DESCRIPTION
- •SYSTEM TESTS
- •OBTAINING FAULT CODES
- •STATE DISPLAY TEST MODE
- •STATE DISPLAY INPUTS AND OUTPUTS
- •STATE DISPLAY SENSORS
- •CIRCUIT ACTUATION TEST MODE
- •OBTAINING CIRCUIT ACTUATION TEST
- •THROTTLE BODY MINIMUM AIR FLOW CHECK PROCEDURE
- •IDLE SPECIFICATIONS
- •FAULT CODE DESCRIPTION
- •THROTTLE BODY REMOVAL
- •THROTTLE BODY
- •FUEL SYSTEM PRESSURE RELEASE PROCEDURE
- •THROTTLE POSITION SENSOR
- •REMOVAL
- •INSTALLATION
- •AUTOMATIC IDLE SPEED (AIS) MOTOR
- •REMOVAL
- •INSTALLATION
- •FUEL INJECTOR RAIL ASSEMBLY
- •REMOVAL
- •INSTALLATION
- •FUEL PRESSURE REGULATOR
- •REMOVAL
- •INSTALLATION
- •FUEL INJECTOR
- •REMOVAL
- •INSTALLATION
- •MANIFOLD ABSOLUTE PRESSURE (MAP) SENSOR
- •CANISTER PURGE SOLENOID SERVICE
- •ENGINE CONTROLLER SERVICE
- •CRANKSHAFT TIMING SENSOR
- •REMOVAL
- •INSTALLATION
- •CAMSHAFT SENSOR SERVICE
- •REMOVAL
- •INSTALLATION
- •HEATED OXYGEN SENSOR (O2 SENSOR) SERVICE
- •SPECIFICATIONS
- •TEMPERATURE SENSOR SPECIFICATIONS
- •TORQUE

Ä |
|
FUEL SYSTEMS 14 - 47 |
|
(2) Remove sensor using Tool C-4907 (Fig. 21). When the sensor is removed, the exhaust manifold
threads must be cleaned with an 18 mm X 1.5 + 6E tap. If the same sensor is to be reinstalled, the sensor threads must be coated with an anti-seize compound such as Loctite 771-64 or equivalent. New sensors are packaged with compound on the threads and do not require additional compound. The sensor must be tightened to 27 NIm (20 ft. lbs.) torque.
Fig. 21 Oxygen Sensor Socket
2.5L TURBO I MULTI-POINT FUEL INJECTIONÐSYSTEM OPERATION
INDEX
|
page |
|
Air Conditioning (A/C) Clutch RelayÐEngine |
|
|
Controller Output . . . . . . . . . . . . . . . . . . . . |
. . . |
52 |
Air Conditioning Switch SenseÐEngine Controller |
|
|
Input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
. . |
49 |
Alternator FieldÐEngine Controller Output . . . . |
. . |
53 |
Auto Shutdown (ASD) Relay and Fuel Pump |
|
|
RelayÐEngine Controller Output . . . . . . . . . . |
. . |
53 |
Automatic Idle Speed (AIS) MotorÐEngine |
|
|
Controller Output . . . . . . . . . . . . . . . . . . . . . . |
. . |
53 |
Barometric Read SolenoidÐEngine Controller |
|
|
Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
. . |
53 |
Battery VoltageÐEngine Controller Input . . . . . . |
. . |
49 |
Brake SwitchÐEngine Controller Input . . . . . . . |
. . |
49 |
Canister Purge SolenoidÐEngine Controller |
|
|
Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
. . |
53 |
CCD Bus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
. . |
48 |
Check Engine LampÐEngine Controller Output |
. . |
54 |
Coolant Temperature SensorÐEngine Controller |
|
|
Input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
. . |
49 |
Detonation Sensor (Knock Sensor)ÐEngine |
|
|
Controller Input . . . . . . . . . . . . . . . . . . . . . . . |
. . |
49 |
Diagnostic ConnectorÐEngine Controller Output |
. . |
54 |
Distributor (Hall Effect) Pick-UpÐEngine |
|
|
Controller Input . . . . . . . . . . . . . . . . . . . . . . . |
. . |
50 |
Engine Controller . . . . . . . . . . . . . . . . . . . . . . . |
. . |
48 |
Fuel InjectorÐEngine Controller Output . . . . . . |
. . |
54 |
GENERAL INFORMATION
The turbocharged multi-point electronic fuel injection system combines an electronic fuel and spark advance control system with a turbocharged intake system (Fig. 1). The fuel injection system is controlled by the Single Board Engine Controller II (SBEC II), referred to in this manual as the engine controller.
The engine controller regulates ignition timing, airfuel ratio, emission control devices, cooling fan, charging system, speed control, turbocharger wastegate and idle speed. The engine controller adapts its requirement to meet changing operating conditions.
page |
|
Fuel Injectors and Fuel Rail Assembly . . . . . . . . . |
57 |
Fuel Pressure Regulator . . . . . . . . . . . . . . . . . . . . |
57 |
Fuel Supply Circuit . . . . . . . . . . . . . . . . . . . . . . . . |
57 |
General Information . . . . . . . . . . . . . . . . . . . . . . . |
47 |
Ignition CoilÐEngine Controller Output . . . . . . . . . |
54 |
Manifold Absolute Pressure (MAP) SensorÐEngine |
|
Controller Input . . . . . . . . . . . . . . . . . . . . . . . . . |
50 |
Modes of Operation . . . . . . . . . . . . . . . . . . . . . . . |
55 |
Oxygen Sensor (O2 Sensor)ÐEngine Controller |
|
Input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
50 |
Part Throttle Unlock SolenoidÐEngine Controller |
|
Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
55 |
Radiator Fan RelayÐEngine Controller Output . . . |
55 |
Speed Control SolenoidsÐEngine Controller |
|
Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
55 |
Speed ControlÐEngine Controller Input . . . . . . . . |
51 |
TachometerÐEngine Controller Output . . . . . . . . . |
55 |
Throttle Body . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
57 |
Throttle Position Sensor (TPS)ÐEngine |
|
Controller Input . . . . . . . . . . . . . . . . . . . . . . . . . |
51 |
Transmission Park/Neutral SwitchÐEngine |
|
Controller Input . . . . . . . . . . . . . . . . . . . . . . . . . |
51 |
Vehicle Distance (Speed) SensorÐEngine |
|
Controller Input . . . . . . . . . . . . . . . . . . . . . . . . . |
52 |
Wastegate Control SolenoidÐEngine Controller |
|
Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
55 |
Various sensors provide the inputs necessary for the engine controller to correctly regulate fuel flow at the fuel injector. These include the manifold absolute pressure, throttle position, oxygen sensor, coolant temperature, detonation, and vehicle distance sensors. In addition to the sensors, various switches and relays provide important information and system control. The inputs include the park/neutral switch and air conditioning clutch switch. The outputs include the auto shutdown relay and fuel pump relay.
All inputs to the engine controller are converted into signals. Based on these inputs the engine controller adjusts air-fuel ratio, ignition timing, turbocharger wastegate and other controlled outputs. The