2006 SUZUKI SX4 throttle position sensor

Downloaded from www.Manualslib.com manuals search engine General Information: 0A-2
S:
SAE: Society of Automotive Engineers
SDM: Sensing and Diagnostic Module (Air Bag
Controller, Air bag Control Module)
SDT: Smart Diagnostic Tester
SFI: Sequential Multiport Fuel Injection
SOHC: Single Over Head Camshaft
T:
TBI: Throttle Body Fuel Injection (Single-Point Fuel
Injection, SPI)
TCC: Torque Converter Clutch
TCM: Transmission Control Module (A/T Controller, A/T
Control Module)
TDC: Top Dead Center
TP Sensor: Throttle Position SensorTVV: Thermal Vacuum Valve (Thermal Vacuum
Switching Valve, TVSV, Bimetal Vacuum Switching
Valve, BVSV)
TWC: Three Way Catalytic Converter (Three Way
Catalyst)
2WD: 2 Wheel Drive
U:
USB: Universal Serial Bus
V:
VIN: Vehicle Identification Number
VSS: Vehicle Speed Sensor
VVT: Variable Valve Timing (Camshaft Position Control)
W:
WU-OC: Warm Up Oxidation Catalytic Converter
WU-TWC: Warm Up Three Way Catalytic Converter
SymbolsS6RW0D0101002
Wire Color SymbolsS6RW0D0101003
Symbol Definition Symbol Definition
Tightening torque Apply SUZUKI BOND NO. 1216B
99000-31230
Apply oil (engine, transmission, transfer,
differential)Apply SILICONE SEALANT
99000-31120
Apply fluid (brake, power steering or
automatic transmission fluid)Apply SEALING COMPOUND 366E
99000-31090
Apply SUZUKI SUPER GREASE A
99000-25011
Apply SUZUKI SUPER GREASE C
99000-25030Apply THREAD LOCK 1322
99000-32110
Apply SUZUKI SUPER GREASE E
99000-25050Apply THREAD LOCK 1333B
99000-32020
Apply SUZUKI SUPER GREASE H
99000-25120Apply THREAD LOCK 1342
99000-32050
Apply SUZUKI SUPER GREASE I
99000-25210
Apply SUZUKI BOND NO. 1215
99000-31110Do not reuse
Apply SUZUKI BOND NO. 1207F
99000-31250Note on reassembly
Apply SUZUKI BOND NO. 1217G
99000-31260
Symbol Wire Color Symbol Wire Color
B BLK Black O, Or ORN Orange
Bl BLU Blue R RED Red
Br BRN Brown W WHT White
G GRN Green Y YEL Yellow
Gr GRY Gray P PNK Pink
Lbl LT BLU Light blue V PPL Violet
Lg LT GRN Light green

Downloaded from www.Manualslib.com manuals search engine Table of Contents 1- i
1
Section 1
CONTENTS
Engine
Precautions ................................................. 1-1
Precautions............................................................. 1-1
Precautions for Engine .......................................... 1-1
Engine General Information and
Diagnosis ................................................. 1A-1
Precautions........................................................... 1A-1
Precautions on Engine Service ........................... 1A-1
Precaution on On-Board Diagnostic (OBD)
System .............................................................. 1A-1
Precautions in Diagnosing Trouble ..................... 1A-1
Precautions for DTC Troubleshooting ................. 1A-2
Precautions of ECM Circuit Inspection................ 1A-2
Precautions of Electric Throttle Body System
Calibration ......................................................... 1A-2
Precaution on CAN Troubleshooting .................. 1A-3
General Description ............................................. 1A-5
Statement on Cleanliness and Care ................... 1A-5
Engine Diagnosis General Description ............... 1A-5
On-Board Diagnostic System Description ........... 1A-5
Data Link Connector (DLC) ................................. 1A-8
Engine and Emission Control System
Description ........................................................ 1A-8
CAN Communication System Description........... 1A-9
Air Intake System Description ........................... 1A-11
Description of Electric Throttle Body System
Calibration ....................................................... 1A-11
Description of Electric Throttle Body System .... 1A-11
Engine and Emission Control Input / Output
Table ............................................................... 1A-18
Schematic and Routing Diagram ...................... 1A-19
Engine and Emission Control System
Diagram .......................................................... 1A-19
Component Location ......................................... 1A-21
Electronic Control System Components
Location .......................................................... 1A-21
Diagnostic Information and Procedures .......... 1A-22
Engine and Emission Control System Check.... 1A-22
Malfunction Indicator Lamp (MIL) Check .......... 1A-25
DTC Check ....................................................... 1A-25
DTC Clearance ................................................. 1A-26
Troubleshooting for Communication Error
with Scan Tool Using CAN.............................. 1A-26
DTC Table ......................................................... 1A-32For Vehicle Equipped with A/T .......................... 1A-36
Fail-Safe Table .................................................. 1A-36
Scan Tool Data ................................................. 1A-38
Visual Inspection ............................................... 1A-43
Engine Basic Inspection .................................... 1A-43
Engine Symptom Diagnosis .............................. 1A-45
Malfunction Indicator Lamp Does Not Come
ON with Ignition Switch ON and Engine Stop
(but Engine Can Be Started) ........................... 1A-52
Malfunction Indicator Lamp Remains ON after
Engine Starts................................................... 1A-54
DTC P0010: Camshaft Position Actuator
Circuit (for engine with VVT system) ............... 1A-55
DTC P0011 / P0012: Camshaft Position -
Timing Over-Advanced or System
Performance / Retarded (for engine with
VVT system).................................................... 1A-57
DTC P0031 / P0032: HO2S Heater Control
Circuit Low / High (Sensor-1) .......................... 1A-59
DTC P0037 / P0038: HO2S Heater Control
Circuit Low / High (Sensor-2) .......................... 1A-61
DTC P0101: Mass Air Flow Circuit Range /
Performance.................................................... 1A-63
DTC P0102: Mass Air Flow Circuit Low Input ... 1A-66
DTC P0103: Mass Air Flow Circuit High Input .. 1A-67
DTC P0106: Manifold Absolute Pressure
Range / Performance ...................................... 1A-69
DTC P0107: Manifold Absolute Pressure
Circuit Low Input ............................................. 1A-70
DTC P0108: Manifold Absolute Pressure
Circuit High Input............................................. 1A-72
DTC P0111: Intake Air Temperature Circuit
Range / Performance ...................................... 1A-74
DTC P0112: Intake Air Temperature Sensor
Circuit Low ...................................................... 1A-76
DTC P0113: Intake Air Temperature Sensor
Circuit High...................................................... 1A-78
DTC P0116: Engine Coolant Temperature
Circuit Range / Performance ........................... 1A-80
DTC P0117: Engine Coolant Temperature
Circuit Low ...................................................... 1A-83
DTC P0118: Engine Coolant Temperature
Circuit High...................................................... 1A-85
DTC P0122: Throttle Position Sensor (Main)
Circuit Low ...................................................... 1A-87

Downloaded from www.Manualslib.com manuals search engine 1-ii Table of Contents
DTC P0123: Throttle Position Sensor (Main)
Circuit High ..................................................... 1A-89
DTC P0131 / P0132: O2 Sensor (HO2S)
Circuit Low Voltage / High Voltage (Sensor-
1) ..................................................................... 1A-92
DTC P0133: O2 Sensor (HO2S) Circuit Slow
Response (Sensor-1) ...................................... 1A-95
DTC P0134: O2 Sensor (HO2S) Circuit No
Activity Detected (Sensor-1) ........................... 1A-96
DTC P0137 / P0138: O2 Sensor (HO2S)
Circuit Low Voltage / High Voltage (Sensor-
2) ..................................................................... 1A-98
DTC P0140: O2 Sensor (HO2S) Circuit No
Activity Detected (Sensor-2) ......................... 1A-101
DTC P0171 / P0172: Fuel System Too Lean /
Rich ............................................................... 1A-103
DTC P0222: Throttle Position Sensor (Sub)
Circuit Low .................................................... 1A-105
DTC P0223: Throttle Position Sensor (Sub)
Circuit High ................................................... 1A-107
DTC P0300 / P0301 / P0302 / P0303 / P0304:
Random Misfire Detected / Cylinder 1 /
Cylinder 2 / Cylinder 3 / Cylinder 4 Misfire
Detected ........................................................ 1A-110
DTC P0327 / P0328: Knock Sensor Circuit
Low / High ..................................................... 1A-112
DTC P0335: Crankshaft Position (CKP)
Sensor Circuit ............................................... 1A-114
DTC P0340: Camshaft Position (CMP)
Sensor Circuit ............................................... 1A-116
DTC P0401 / P0402: Exhaust Gas
Recirculation Flow Insufficient Detected /
Excessive Detected ...................................... 1A-119
DTC P0403: Exhaust Gas Recirculation
Control Circuit ............................................... 1A-122
DTC P0420: Catalyst System Efficiency
below Threshold ............................................ 1A-124
DTC P0443: Evaporative Emission System
Purge Control Valve Circuit........................... 1A-126
DTC P0462 / P0463: Fuel Level Sensor
Circuit Low / High .......................................... 1A-128
DTC P0480: Fan 1 (Radiator Cooling Fan)
Control Circuit ............................................... 1A-129
DTC P0481: Cooling Fan 2 (A/C Condenser
Fan) Control Circuit ....................................... 1A-131
DTC P0500: Vehicle Speed Sensor (VSS)
Malfunction .................................................... 1A-134
DTC P0532: A/C Refrigerant Pressure
Sensor Circuit Low ........................................ 1A-136
DTC P0533: A/C Refrigerant Pressure
Sensor Circuit High ....................................... 1A-138
DTC P0601 / P0602 / P0607: Internal Control
Module Memory Check Sum Error / Control
Module Programming Error / Control Module
Performance ................................................. 1A-139
DTC P0616: Starter Relay Circuit Low............ 1A-140
DTC P0617: Starter Relay Circuit High ........... 1A-141
DTC P1510: ECM Back-Up Power Supply
Malfunction .................................................... 1A-143DTC P2101: Throttle Actuator Control Motor
Circuit Range / Performance ......................... 1A-144
DTC P2102: Throttle Actuator Control Motor
Circuit Low .................................................... 1A-146
DTC P2103: Throttle Actuator Control Motor
Circuit High.................................................... 1A-147
DTC P2111: Throttle Actuator Control System
- Stuck Open ................................................. 1A-148
DTC P2119: Throttle Actuator Control Throttle
Body Range / Performance ........................... 1A-149
DTC P2122: Pedal Position Sensor (Main)
Circuit Low Input ........................................... 1A-151
DTC P2123: Pedal Position Sensor (Main)
Circuit High Input........................................... 1A-153
DTC P2127: Pedal Position Sensor (Sub)
Circuit Low Input ........................................... 1A-155
DTC P2128: Pedal Position Sensor (Sub)
Circuit High Input........................................... 1A-158
DTC P2135: Throttle Position Sensor (Main /
Sub) Voltage Correlation ............................... 1A-160
DTC P2138: Pedal Position Sensor (Main /
Sub) Voltage Correlation ............................... 1A-163
DTC P2227 / P2228 / P2229: Barometric
Pressure Circuit Malfunction ......................... 1A-165
DTC U0073: Control Module Communication
Bus Off .......................................................... 1A-166
DTC U0101: Lost Communication with TCM .. 1A-166
DTC U0121: Lost Communication with ABS
Control Module .............................................. 1A-166
DTC U0140: Lost Communication with Body
Control Module .............................................. 1A-166
Troubleshooting for CAN-DTC ........................ 1A-167
Inspection of ECM and Its Circuits .................. 1A-172
ECM Power and Ground Circuit Check........... 1A-193
Fuel Injector Circuit Check .............................. 1A-196
Fuel Pump and Its Circuit Check..................... 1A-198
Fuel Pressure Check....................................... 1A-201
A/C Condenser Cooling Fan Control System
Inspection ...................................................... 1A-202
A/C System Circuits Check ............................. 1A-205
Electric Load Signal Circuit Check .................. 1A-209
Radiator Cooling Fan Control System Check . 1A-211
Repair Instructions ..........................................1A-212
Idle Speed and IAC Throttle Valve Opening
Inspection ...................................................... 1A-212
Special Tools and Equipment .........................1A-213
Special Tool .................................................... 1A-213
Aux. Emission Control Devices ............. 1B-1
Diagnostic Information and Procedures ............1B-1
EGR System Inspection (If Equipped) ................ 1B-1
Repair Instructions ..............................................1B-1
EVAP Canister Purge Inspection ........................ 1B-1
EVAP Canister Purge Valve and Its Circuit
Inspection .......................................................... 1B-1
Vacuum Passage Inspection............................... 1B-2
Vacuum Hose Inspection .................................... 1B-3
EVAP Canister Purge Valve Inspection .............. 1B-3
EVAP Canister Inspection ................................... 1B-4

Downloaded from www.Manualslib.com manuals search engine Table of Contents 1-iii
EGR Valve Removal and Installation (If
Equipped).......................................................... 1B-4
EGR Valve Inspection (If Equipped) ................... 1B-4
PCV Hose Inspection .......................................... 1B-5
PCV Valve Inspection ......................................... 1B-5
Special Tools and Equipment ............................. 1B-5
Special Tool ........................................................ 1B-5
Engine Electrical Devices ....................... 1C-1
Repair Instructions .............................................. 1C-1
Engine Control Module (ECM) Removal and
Installation ......................................................... 1C-1
Manifold Absolute Pressure (MAP) Sensor
Inspection (If Equipped) .................................... 1C-2
Electric Throttle Body Assembly On-Vehicle
Inspection.......................................................... 1C-2
Electric Throttle Body System Calibration ........... 1C-5
Accelerator Pedal Position (APP) Sensor
Assembly On-Vehicle Inspection ...................... 1C-5
Accelerator Pedal Position (APP) Sensor
Assembly Removal and Installation .................. 1C-5
Accelerator Pedal Position (APP) Sensor
Assembly Inspection ......................................... 1C-6
Engine Coolant Temperature (ECT) Sensor
Removal and Installation................................... 1C-7
Engine Coolant Temperature (ECT) Sensor
Inspection.......................................................... 1C-7
Heated Oxygen Sensor (HO2S-1 and HO2S-
2) Heater On-Vehicle Inspection (If
Equipped).......................................................... 1C-8
Heated Oxygen Sensor (HO2S-1 and HO2S-
2) Removal and Installation (If Equipped) ......... 1C-8
Camshaft Position (CMP) Sensor Removal
and Installation .................................................. 1C-9
Camshaft Position (CMP) Sensor Inspection ...... 1C-9
Crankshaft Position (CKP) Sensor Removal
and Installation ................................................ 1C-10
Crankshaft Position (CKP) Sensor Inspection .. 1C-11
Knock Sensor Removal and Installation ........... 1C-11
Main Relay, Fuel Pump Relay, Starting Motor
Control Relay, Throttle Actuator Control
Relay and Radiator Cooling Fan Relay
Inspection........................................................ 1C-12
Mass Air Flow (MAF) and Intake Air
Temperature (IAT) Sensor On-Vehicle
Inspection........................................................ 1C-12
Mass Air Flow (MAF) and Intake Air
Temperature (IAT) Sensor Removal and
Installation ....................................................... 1C-13
Intake Air Temperature (IAT) Sensor
Inspection........................................................ 1C-13
Specifications..................................................... 1C-14
Tightening Torque Specifications ...................... 1C-14
Engine Mechanical .................................. 1D-1
General Description ............................................. 1D-1
Engine Construction Description ......................... 1D-1
Camshaft Position Control (VVT Variable
Valve Timing) System Description .................... 1D-3Diagnostic Information and Procedures ............1D-5
Compression Check ............................................1D-5
Engine Vacuum Check........................................1D-6
Valve Lash (Clearance) Inspection .....................1D-7
Repair Instructions ............................................1D-10
Air Intake System Components.........................1D-10
Air Cleaner Filter Removal and Installation .......1D-10
Air Cleaner Filter Inspection and Cleaning........1D-10
Air Cleaner Assembly Removal and
Installation .......................................................1D-11
Cylinder Head Cover Removal and
Installation .......................................................1D-11
Throttle Body and Intake Manifold
Components ....................................................1D-13
Throttle Body On-Vehicle Inspection.................1D-14
Electric Throttle Body Assembly Removal and
Installation .......................................................1D-14
Throttle Body Cleaning......................................1D-14
Intake Manifold Removal and Installation .........1D-15
Engine Mountings Components ........................1D-16
Engine Assembly Removal and Installation ......1D-17
Timing Chain Cover Components .....................1D-22
Timing Chain Cover Removal and Installation ..1D-23
Timing Chain Cover Inspection .........................1D-25
Oil Control Valve Removal and Installation
(For Engine with VVT) .....................................1D-26
Oil Control Valve Inspection (For Engine with
VVT) ................................................................1D-26
Timing Chain and Chain Tensioner
Components ....................................................1D-27
Timing Chain and Chain Tensioner Removal
and Installation ................................................1D-27
Timing Chain and Chain Tensioner Inspection ..1D-31
Camshaft, Tappet and Shim Components ........1D-32
Camshaft, Tappet and Shim Removal and
Installation .......................................................1D-33
Camshaft, Tappet and Shim Inspection ............1D-36
Valves and Cylinder Head Components ...........1D-39
Valves and Cylinder Head Removal and
Installation .......................................................1D-40
Valves and Cylinder Head Disassembly and
Assembly.........................................................1D-42
Valves and Valve Guides Inspection.................1D-45
Cylinder Head Inspection ..................................1D-47
Valve Spring Inspection ....................................1D-48
Pistons, Piston Rings, Connecting Rods and
Cylinders Components ....................................1D-49
Pistons, Piston Rings, Connecting Rods and
Cylinders Removal and Installation .................1D-49
Pistons, Piston Rings, Connecting Rods and
Cylinders Disassembly and Assembly ............1D-51
Cylinders, Pistons and Piston Rings
Inspection ........................................................1D-52
Piston Pins and Connecting Rods Inspection ...1D-54
Crank Pin and Connecting Rod Bearings
Inspection ........................................................1D-55
Main Bearings, Crankshaft and Cylinder
Block Components ..........................................1D-59
Main Bearings, Crankshaft and Cylinder
Block Removal and Installation .......................1D-60

Downloaded from www.Manualslib.com manuals search engine 1A-2 Engine General Information and Diagnosis:
• When checking ECM for DTC, keep in mind that DTC
is displayed on the scan tool as follows depending on
the scan tool used.
– SUZUKI scan tool displays DTC detected by ECM.
– CAN communication OBD generic scan tool
displays DTC detected by each of ECM and TCM
(for A/T model) simultaneously.
• Priorities for diagnosing troubles
If two or more DTCs are stored, proceed to the DTC
flow which has been detected earliest in the order and
follow the instruction in that flow.
If no instructions are given, troubleshoot DTCs
according to the following priorities.
a. DTCs other than DTC P0171 / P0172 (Fuel
system too lean / too rich), DTC P0300 / P0301 /
P0302 / P0303 / P0304 (Misfire detected) and
DTC P0401 / P0402 (EGR flow malfunction)
b. DTC P0171 / P0172 (Fuel system too lean / too
rich) and DTC P0401 / P0402 (EGR flow
malfunction)
c. DTC P0300 / P0301 / P0302 / P0303 / P0304
(Misfire detected)
• Be sure to read “Precautions for Electrical Circuit
Service in Section 00” before inspection and observe
what is written there.
• ECM replacement:
When substituting a known-good ECM, check for the
following conditions. Neglecting this check may cause
damage to a known-good ECM.
– Resistance value of all relays, actuators is as
specified respectively.
– MAP sensor, A/C refrigerant pressure sensor (if
equipped with A/C), accelerator pedal position
(APP) sensor and TP sensor are in good condition
and none of power circuits of these sensors is
shorted to ground.
• Communication of ECM, BCM, combination meter,
keyless start control module (if equipped with keyless
start control system), 4WD control module (if
equipped), TCM (for A/T model) and ABS control
module, is established by CAN (Controller Area
Network). (For more detail of CAN communication for
ECM, refer to “CAN Communication System
Description”). Therefore, handle CAN communication
line with care referring to “Precaution for CAN
Communication System in Section 00”.
• Immobilizer transponder code registration after
replacing ECM (Immobilizer model)
When ECM is replaced with new one or with another
one, make sure to register immobilizer transponder
code to ECM correctly according to “Procedure after
ECM Replacement in Section 10C”.Precautions for DTC TroubleshootingS6RW0D1100003
• Before performed trouble shooting, be sure to read
the “Precautions of ECM Circuit Inspection”.
• When measuring circuit voltage, resistance and/or
pulse signal at ECM connector, connect the special
tool to ECM and/or the ECM connectors referring to
“Inspection of ECM and Its Circuits”.
• Upon completion of inspection and repair work,
perform “DTC Confirmation Procedure” and confirm
that the trouble has been corrected.
Precautions of ECM Circuit InspectionS6RW0D1100004
• ECM connectors are waterproofed. Each terminal of
the ECM connectors is sealed up with the grommet.
Therefore, when measuring circuit voltage, resistance
and/or pulse signal at ECM connector, do not insert
the tester’s probe into the sealed terminal at the
harness side. When measuring circuit voltage,
resistance and/or pulse signal at ECM connector,
connect the special tool to the ECM connectors. And,
insert the tester’s probe into the special tool’s
connectors at the harness side, and then measure
voltage, resistance and/or pulse signal. Or, ECM and
its circuits may be damaged by water.
• Wire colors of the special tool’s connectors are
different from the ones of the ECM connectors.
However, the circuit arrangement of the special tool’s
connectors is same as the one of the ECM
connectors. Therefore, measure circuit voltage and
resistance by identifying the terminal location subject
to the measurement.
Precautions of Electric Throttle Body System
Calibration
S6RW0D1100005
After performing one of works described below, it is
necessary to re-register the completely closed throttle
valve reference position stored in memory of ECM. (For
detailed information, refer to “Description of Electric
Throttle Body System Calibration”.) For the procedure to
register such data in ECM, refer to “Electric Throttle
Body System Calibration in Section 1C”.
• To shut off backup power of ECM for such purposes of
battery replacement or “DOME” fuse removal
• To erase DTCs P0122, P0123, P0222, P0223, P2101,
P2102, P2103, P2111, P2112, P2119 and/or P2135
• To replace ECM
• To replace throttle body and/or accelerator pedal
position (APP) sensor assembly

Downloaded from www.Manualslib.com manuals search engine Engine General Information and Diagnosis: 1A-11
Air Intake System DescriptionS6RW0D1101006
The main components of the air intake system are air cleaner (1), air cleaner outlet hose (2), electric throttle body (3)
(for the details, refer to “Description of Electric Throttle Body System”.), and intake manifold (4).
The air (by the amount corresponding to throttle valve (5) opening and engine speed) is filtered by the air cleaner,
distributed by the intake, and finally drawn into each combustion chamber. Electric throttle body is not equipped with
IAC valve for idle speed control. Idle speed control is done by the throttle actuator (6) which opens/closes the throttle
valve. (For the details, refer to “Description of Electric Throttle Body System”.)
Description of Electric Throttle Body System CalibrationS6RW0D1101007
ECM calculates controlled opening of the throttle valve on the basis of the completely closed throttle valve position of
the electric throttle body system. The completely closed position data is saved in memory of ECM. However, the
completely closed position of the throttle valve of the electric throttle body system (signal voltage from throttle position
sensor when throttle is completely closed) differs one from the other depending on individual differences of the throttle
valve and throttle position sensor. As such individual differences must be taken into account for controlling the throttle
valve, it is necessary to register the completely closed throttle valve position data in ECM. When such data is
registered in ECM, it is saved in RAM (memory) of ECM and used as the base data for controlling the throttle valve.
This data is cleared, when any of the works described in “Precautions of Electric Throttle Body System Calibration” is
performed.
Also, after replacement of the throttle body and/or APP sensor assembly, the completely closed position data in
memory of ECM must be cleared once and a new one must be registered, or ECM cannot judge the complete closure
position properly.
For the procedure to register such data, refer to “Electric Throttle Body System Calibration in Section 1C”. (After the
completely closed position data is cleared, ECM, for the first time only, opens and closes the throttle valve for about 5
seconds after the ignition switch is turned ON position, for registration of the completely closed throttle valve position.
If the engine is started during this registration process, such symptom as “longer cranking time” or “slow rise of
revolution speed immediately after start-up” may occur. However, turning OFF the ignition switch once and restarting
will set correct registration.)
Description of Electric Throttle Body SystemS6RW0D1101009
The Electric Throttle Body System consists of electric throttle body assembly, accelerator pedal position (APP) sensor
assembly, ECM and throttle actuator control relay.
Among them, assembly components are as follows.
• Electric throttle body assembly: throttle valve, throttle actuator, 2 throttle position sensors
• APP sensor assembly: Accelerator pedal, 2 accelerator position sensors
42
1
3
5
6
I5RW0A110006-02

Downloaded from www.Manualslib.com manuals search engine 1A-12 Engine General Information and Diagnosis:
Operation Description
ECM (5) detects opening (depressed extent of pedal) of the accelerator pedal based on signal voltage of the APP
sensor (1) and using that data and engine operation condition, it calculates the optimum throttle valve opening. On the
other hand, it detects the throttle valve opening based on the signal voltage of the throttle position sensor (3) included
in the throttle body (2) and compares it with the above calculated optimum throttle valve opening. When there is a
difference between them, ECM controls the duty ratio (100% – 0%) according to this difference to drive the throttle
actuator (motor) (4) included in the throttle body. When there is no difference, ECM controls the duty ratio to about
15% to maintain the throttle valve opening. In this way, the throttle valve (17) is opened and closed to achieve the
optimum throttle valve opening.
In this system, as the throttle position sensor and APP sensor have 2 sensors (main and sub) each, highly accurate
and highly reliable control and abnormality detection are assured. Also, when ECM detects an abnormality in the
system, it turns off the throttle actuator control relay (8) to stop controlling the throttle actuator. When the throttle
actuator control relay is turned off, the throttle valve is fixed at the opening of about 7° from its completely closed
position (default opening) by the force of the return spring and open spring included in the throttle body.
This throttle body is not equipped with IAC valve for idle speed control. Idle speed control is done by the throttle
actuator which opens/closes the throttle valve.
Electronic Control System Description
The electronic control system consists of 1) various
sensors which detect the state of engine and driving
conditions, 2) ECM which controls various devices
according to the signals from the sensors and 3) various
controlled devices.
Functionally, it is divided into the following sub systems:
• Fuel injection control system
• Ignition control system
• Electric throttle body control system
• Fuel pump control system
• Radiator cooling fan control system
• Evaporative emission control system
• EGR system (if equipped)
• Oxygen sensor heater control system• A/C control system (if equipped with A/C)
• Camshaft position control system
• Immobilizer control system
• Controller (computer) communication system
Especially, ECM (Engine Control Module), BCM (Body
electrical Control Module), combination meter, ABS /
control module, keyless start control module (if equipped
with keyless start control system), TCM (Transmission
Control Module) (for A/T model) and 4WD control
module (if equipped) intercommunicate by means of
CAN (Controller Area Network) communication.
4 12
1735
6
7 8
9
10
11
12
13
14
1516
18
I4RS0B110007-02
6. CPU 11. APP sensor (main) signal 15. Drive signal of throttle actuator
7. Drive circuit of throttle actuator 12. APP sensor (sub) signal 16. Power supply of throttle actuator
9. From “THR MOT” fuse 13. Throttle position sensor (main) signal 18. Control signal of throttle actuator control relay
10. From main relay 14. Throttle position sensor (sub) signal

Downloaded from www.Manualslib.com manuals search engine 1A-16 Engine General Information and Diagnosis:
Connector: C01
Terminal Wire color Circuit Terminal Wire color Circuit
1 BLU/YEL Fuel injector No.1 output 31 — —
2 BLU/WHT Fuel injector No.2 output 32 — —
3 GRN/ORNEGR valve (stepper motor coil 2)
output33 — —
4 GRN/REDEGR valve (stepper motor coil 1)
output34 — —
5 GRN/WHTIgnition coil No.2 and No.3
output35 — —
6 GRN/YELIgnition coil No.1 and No.4
output36 — —
7— — 37— —
8— — 38— —
9— — 39— —
10 WHTOxygen signal of heated oxygen
sensor-140 WHTThrottle position sensor (sub)
signal
11 B R NOxygen signal of heated oxygen
sensor-2 (if equipped)41 GRYGround for shield wire of TP
sensor circuit
12 WHTCAN communication line (active
low signal) to TCM (for A/T
model)42 BLKGround for throttle position
sensor
13 REDCAN communication line (active
high signal) to TCM (for A/T
model) 43 REDOutput for 5 V power source of
throttle position sensor
14 GRY/REDOutput of 5 V power source for
MAP sensor (if equipped) and A/
C refrigerant pressure sensor
(A/C model)44 YEL Output of throttle actuator
15 BLK Ground for ECM 45 BLU Output of throttle actuator
16 BLU/RED Fuel injector No.3 output 46 BLK/REDHeater output of heated
oxygen sensor-1
17 BLU/ORN Fuel injector No.4 output 47 RED/BLUHeater output of heated
oxygen sensor-2 (if equipped)
18 BRN/YELEGR valve (stepper motor coil 4)
output (if equipped)48 YEL/GRN Starting motor signal
19 WHT/REDEGR valve (stepper motor coil 3)
output (if quipped)49 — —
20 RED/YEL CMP sensor signal 50 WHT/BLU Ground of ECM for shield wire
21 PNK CKP sensor signal 51 — —
22 — — 52 — —
23 — — 53 RED/BLKManifold absolute pressure
(MAP) sensor signal (if
equipped)
24 LT GRNEngine coolant temp. (ECT)
sensor signal54 GRNThrottle position sensor (main)
signal
25 BLK/YELIntake air temp. (IAT) sensor
signal55 GRY/BLU Ground for sensors
26 GRN/BLKMass air flow (MAF) sensor
signal56 RED Knock sensor signal
27 GRY Ground for MAF sensor 57 ORN Ground for sensors
28 BLU/YEL Generator control output 58 BLK/ORN Ground for ECM
29 BLU/BLKEVAP canister purge valve
output59 GRN/WHTOil control valve ground
(for engine with VVT system)
30 BLK Ground for ECM 60 GRN/REDOil control valve output
(for engine with VVT system)