2000 SUZUKI SWIFT Oxygen sensor

ENGINE AND EMISSION CONTROL SYSTEM (TBI FOR G10) 6E1-7
CON-
NECTOR
C02TERMI-
NAL
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26ECM ground
Power source (from main relay)
Blank
Blank
Blank
Blank
EVAP canister purge valve
Shift solenoid-B (A / T)
Shift solenoid-A (A / T)
Igniter
Idle speed control actuator
Fuel injector
Injector ground
Power source (from battery)
Power source (from main relay)
Idle speed control actuator relay
Malfunction indicator lamp
Immobilizer indicator lamp
Heater of HO2S-2
Radiator fan relay
Fuel pump relay
Main relay
Blank
Idle speed control actuator
EFE heater relay
Injector groundC031
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22Data link connector
Vehicle speed sensor (+) (A / T)
Vehicle speed sensor (M / T)
Transmission range sensor (switch)“2”
Transmission range sensor (switch)“N”
Transmission range sensor (switch)“P”
Blank
Blank
Heated oxygen sensor-2
Blank
Fuel level sensor (gauge)
Blank
Data link connector
Vehicle speed sensor (–) (A / T)
Transmission range sensor (switch)“L”
Transmission range sensor (switch)“D”
Transmission range sensor (switch)“R”
A / C ON (output) signal for A / C control module
(if equipped)
Electric load signal
A / C (input) signal from A / C control module
(if equipped)
Ignition switch
Blank
Blank CIRCUITCON-
NECTORTERMI-
NALCIRCUIT
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16Power source for sensors
Camshaft position sensor (+)
Crankshaft position sensor (+)
Closed throttle position switch
Manifold absolute pressure sensor
Throttle position sensor
Engine coolant temp. sensor
Heater of HO2S-1
Sensor ground
Camshaft position sensor (–)
Crankshaft position sensor (–)
EFE heater (monitor)
Heated oxygen sensor-1
Intake air temp sensor
Power steering pressure switch (if equipped)
Engine start signal circuit
C01
1. CMP sensor (in Distributor)
2. CKP sensor
3. TP sensor
4. MAP sensor
5. ECT sensor
6. IAT sensor
7. HO2S-1
8. HO2S-2
9. Transmission range switch (A / T)
10. VSS (A / T)
11. A / C control module (if equipped)
12. Heater blower switch
13. Fuel level sensor
14. Speedometer
15. P.SP switch
16. Rear defogger switch
17. Light switch
18. DLC
19. Fuel injector20. Injector resistor
21. Conister purge valve
22. Fuel pump relay
23. Rediator fan relay
24. EFE heater relay
25. ISC actuator relay
26. ISC actuator
27. Ignition coil
28. Igniter
29. Immobilizer indicator lamp
30. MIL
31. Main relay
32. Shift solenoid A (A / T)
33. Shift solenoid B (A / T)
34. Starter motor
35. Ignition switch

ENGINE AND EMISSION CONTROL SYSTEM (TBI FOR G10) 6E1-23
1. Viewed from terminal side
1. Exhaust manifold
2. Heated oxygen sensor
Sensor-1
Sensor-2
HEATED OXYGEN SENSOR (SENSOR-1 AND
SENSOR-2)
OXYGEN SENSOR HEATER INSPECTION
1) Disconnect sensor coupler.
2) Using ohmmeter, measure resistance between terminals “V
B”
and “GND” of sensor coupler.
NOTE:
Temperature of sensor affects resistance value largely.
Make sure that sensor heater is at correct temperature.
Resistance of oxygen sensor heater:
11.7 – 14.3 Ω at 20C, 68F
If found faulty, replace oxygen sensor.
3) Connect sensor coupler securely.
REMOVAL
WARNING:
To avoid danger of being burned, do not touch exhaust system
when system is hot. Oxygen sensor removal should be per-
formed when system is cool.
1) Disconnect negative cable from battery.
2) Hoist vehicle when removing sensor-2.
3) Disconnect coupler of heated oxygen sensor and release its
wire harness from clamps.
4) Remove heated oxygen sensor from exhaust manifold.
INSTALLATION
Reverse removal procedure noting the following.

Tighten heated oxygen sensor to specified torque.
Tightening Torque for heated oxygen sensor
45 N
.m (4.5 kg-m, 32.5 lb-ft)

Connect coupler of heated oxygen sensor and clamp wire har-
ness securely.

After installing heated oxygen sensor, start engine and check that
no exhaust gas leakage exists.

09913-76011
SUZUKI scan tool (Tech 1A) kitMass storage cartridge09931-76030
16 / 14 pin DLC cable
1. Fuel pressure gauge
09912-58441
2. Pressure hose
09912-58431
3. 3-way joint & hose
09912-58490
09917-47010
Vacuum pump gauge 1. Storage case
2. Operator’s manual
3. Tech 1A
4. DLC cable (14 / 26 pin,
09931-76040)
5. Test lead / probe
6. Power source cable
7. DLC cable adaptor
8. Self-test adaptor
6E1-36 ENGINE AND EMISSION CONTROL SYSTEM (TBI FOR G10)
SPECIAL TOOLS
TIGHTENING TORQUE SPECIFICATIONS
FasteningpartsTightening torqueFastening artsN.mkg-mlb-ft
Throttle body mounting bolt232.317.0
Throttle upper and lower body screw3.50.352.5
Fuel injector wire connector screw2.00.201.5
Fuel injector cover screw3.50.352.5
TP sensor mounting screw2.00.201.5
ECT sensor151.511.0
Heated oxygen sensor -1 and -2454.532.5

6E2
ENGINE AND EMISSION CONTROL SYSTEM (SFI FOR G13) 6E2-1
GENERAL DESCRIPTION6E2- 2 . . . . . . . . . . . . . .
AIR INTAKE SYSTEM 6E2- 6. . . . . . . . . . . . . . . . . .
FUEL DELIVERY SYSTEM 6E2- 7. . . . . . . . . . . . . .
ELECTRONIC CONTROL SYSTEM 6E2- 8. . . . . .
Engine and Emission Control Input /
Output Table 6E2- 9. . . . . . . . . . . . . . . . . . . . . . . .
DIAGNOSISSee Section 6. . . . . . . . . . . . . . . . . . . . .
ON-VEHICLE SERVICE6E2-13 . . . . . . . . . . . . . . . .
Accelerator Cable Adjustment 6E2-13. . . . . . . . . .
Idle Speed/Idle Air Control (IAC)
Duty Inspection 6E2-14. . . . . . . . . . . . . . . . . . . . .
AIR INTAKE SYSTEM 6E2-15. . . . . . . . . . . . . . . . . .
Throttle Body 6E2-15. . . . . . . . . . . . . . . . . . . . . . . .
Idle Air Control Valve 6E2-17. . . . . . . . . . . . . . . . .
FUEL DELIVERY SYSTEM 6E2-18. . . . . . . . . . . . . .
Fuel Pressure Inspection 6E2-18. . . . . . . . . . . . . .
Fuel Pump 6E2-21. . . . . . . . . . . . . . . . . . . . . . . . . . .
Fuel Pressure Regulator 6E2-22. . . . . . . . . . . . . . .
Fuel Injector 6E2-23. . . . . . . . . . . . . . . . . . . . . . . . .
ELECTRONIC CONTROL SYSTEM 6E2-27. . . . . .
ECM / PCM 6E2-27. . . . . . . . . . . . . . . . . . . . . . . . . .
MAP Sensor 6E2-27. . . . . . . . . . . . . . . . . . . . . . . . .
TP Sensor 6E2-28. . . . . . . . . . . . . . . . . . . . . . . . . . .
IAT Sensor 6E2-29. . . . . . . . . . . . . . . . . . . . . . . . . .
ECT Sensor 6E2-30. . . . . . . . . . . . . . . . . . . . . . . . . Heated Oxygen Sensor -1 and -2 6E2-31. . . . . . .
Camshaft Position Sensor 6E2-32. . . . . . . . . . . . .
Crankshaft Position Sensor 6E2-32. . . . . . . . . . . .
Vehicle Speed Sensor 6E2-33. . . . . . . . . . . . . . . . .
Fuel Level Sensor (gauge) 6E2-33. . . . . . . . . . . . .
Main Relay, Fuel Pump Relay and
Radiator Fan Control Relay 6E2-33. . . . . . . . . . .
Fuel Cut Operation (Inspection) 6E2-34. . . . . . . .
Radiator Fan Control System 6E2-34. . . . . . . . . .
System Inspection 6E2-34. . . . . . . . . . . . . . . . . .
Radiator Fan 6E2-34. . . . . . . . . . . . . . . . . . . . . . .
EMISSION CONTROL SYSTEM 6E2-35. . . . . . . . .
EGR System 6E2-35. . . . . . . . . . . . . . . . . . . . . . . . .
EVAP Control System 6E2-36. . . . . . . . . . . . . . . . .
EVAP Canister Purge Inspection 6E2-36. . . . . .
Vacuum Passage Inspection 6E2-37. . . . . . . . .
Vacuum Hose Inspection 6E2-37. . . . . . . . . . . .
EVAP Canister Purge Valve
Inspection 6E2-37. . . . . . . . . . . . . . . . . . . . . . . .
EVAP Canister Inspection 6E2-38. . . . . . . . . . .
PCV System 6E2-38. . . . . . . . . . . . . . . . . . . . . . . . .
PCV Hose Inspection 6E2-38. . . . . . . . . . . . . . .
PCV Valve Inspection 6E2-38. . . . . . . . . . . . . . .
SPECIAL TOOLS6E2-39 . . . . . . . . . . . . . . . . . . . . . .
TIGHTENING TORQUE
SPECIFICATIONS6E2-39 . . . . . . . . . . . . . . . . . . . . .
SECTION 6E2
ENGINE AND EMISSION CONTROL SYSTEM
(SFI FOR G13)
WARNING:
For vehicles equipped with Supplemental Restraint (Air Bag) System:

Service on and around the air bag system components or wiring must be performed only by an autho-
rized SUZUKI dealer. Refer to “Air Bag System Components and Wiring Location View” under “Gener-
al Description” in air bag system section in order to confirm whether you are performing service on
or near the air bag system components or wiring. Please observe all WARNINGS and “Service Precau-
tions” under “On-Vehicle Service” in air bag system section before performing service on or around
the air bag system components or wiring. Failure to follow WARNINGS could result in unintentional
activation of the system or could render the system inoperative. Either of these two conditions may
result in severe injury.

Technical service work must be started at least 90 seconds after the ignition switch is turned to the
“LOCK” position and the negative cable is disconnected from the battery. Otherwise, the system may
be activated by reserve energy in the Sensing and Diagnostic Module (SDM).
CONTENTS

6E2-8 ENGINE AND EMISSION CONTROL SYSTEM (SFI FOR G13)
INFORMATION SENSORS
-1. MAP sensor
-2. TP sensor
-3. IAT sensor
-4. ECT sensor
-5. Heated oxygen sensor-1
5-1. Heated oxygen sensor-2
-6. VSS (A / T)
-7. Transmission range switch (A / T)
-8. Battery
-9. CMP sensor
-10. CKP sensor
-11. Fuel level sensor (gauge) (in fuel tank)
-12. PSP switch
-13. A / C control module (if equipped)
-14. VSS (speedometer) (M / T)OTHERS
A: ECM (PCM)
B: Main relay
C: EVAP canister
D: Data link connector CONTROL DEVICES
a: Fuel injector
b: EVAP canister purge valve
c: Fuel pump relay
d: EGR valve (step motor)
e: Malfunction indicator lamp
f: Ignition coil assembly
g: Radiator fan control relay
h: IAC valve
The electronic control system consists of 1) various
sensors which detect the state of engine and driving
conditions, 2) ECM (PCM) which controls various de-
vices according to the signals from the sensors and
3) various controlled devices.
Functionally, it is divided into nine sub systems:

Fuel injection control system

Idle speed control system
Fuel pump control system

A / C control system (if equipped)

Radiator fan control system

EGR system

Evaporative emission control system

Oxygen sensor heater control system

Ignition control system
Also, with A / T model, PCM controls A / T.
ELECTRONIC CONTROL SYSTEM

ENGINE AND EMISSION CONTROL SYSTEM (SFI FOR G13) 6E2-9
FUEL PUMP RELAY
FUEL INJECTOR
HO2S HEATER
IAC VALVE
IGNITION COIL WITH IGNITER
EGR VALVE
EVAP CANISTER PURGE VALVE
A/C CONTROL MODULE
RADIATOR FAN RELAY
MIL
MAIN RELAY
SIGNAL FROM SENSOR, SWITCH AND CONTROL MODULE
OUTPUT
INPUT
ENGINE & EMISSION CONTROL INPUT / OUTPUT TABLE
ELECTRIC CONTROL DEVICE
FUEL LEVEL SENSORFor detecting fuel level
BAROMETRIC PRESSURE SENSOR
START SWITCH
IGNITION SWITCH
LIGHTING SWITCH
REAR DEFOGGER SWITCH (IF EQUIPPED)
BLOWER SWITCH
A / C SWITCH
VSS
HEATED OXYGEN SENSOR-1
HEATED OXYGEN SENSOR-2For detecting deterioration of
three way catalytic convertor
IAT SENSOR
ECT SENSOR
TP SENSOR
MAP SENSOR
CMP SENSOR
CKP SENSOR

12 W / R “N”-range signal (A / T)
13 R Heated oxygen sensor-2
14 Y / R “D”-range signal (A / T)
15 R / W “R”-range signal (A / T)
16 Lg / B A / C SW signal
17 R / W EGR valve (stepper motor coil 4)
18 P / G Radiator fan relay
19 Y / Bl Fuel pump relay
20 —— ———
21 W / B “P”-range signal (A / T)
22 P / Bl Fuel level gauge
23 R / B “L”-range signal (A / T)
24 —— ———
1 V Malfunction indicator lamp
Vehicle speed sensor (M / T)
Output shaft speed sensor (+)
(A / T)
3 —— ———
4 G / W Shift solenoid – A (A / T)
5 Gr Throttle position (TP) sensor
6 B / W Ignition switch signal
7 Y / B Data link connector
Output shaft speed sensor (–)
(A / T)
9 —— ———
10 G GND for HO2S-2
11 G / Or Shift solenoid – B (A / T)
12 —— ———
13 —— ———
14 —— ———
15 —— ———
16 Br Tachometer signal
17 B / Y Engine start signal
CON-
NECTORTERMINALWIRE
COLORCIRCUITCON-
NECTORTERMINALWIRE
COLORCIRCUIT
20
Br / Y 19
Br / W
C02 C01C02
C03
Wire color
B : Black
B / Or : Black / Orange
B / W : Black / White
B / Y : Black / Yellow
Bl : Blue
Bl / Or : Blue / Orange
Bl / B : Blue / Black
Bl / R : Blue / Red
Bl / Y : Blue / Yellow
Br : Brown
Br / W : Brown / White
Br / Y : Brown / Yellow
G : Green
G / Or : Green / Orange
G / R : Green / Red
G / W : Green / White
Gr : Gray
Gr / R : Gray / Red
Lg / B : Lightgreen / Black
Lg / R : Lightgreen / RedP : Pink
P / Bl : Pink / Blue
P / G : Pink / Green
V : Violet
V / G : Violet / Green
V / R : Violet / Red
V / W : Violet / White
W : White
W / B : White / Black
W / R : White / Red
R : Red
R / B : Red / Black
R / Bl : Red / Blue
R / G : Red / Green
R / W : Red / White
R / Y : Red / Yellow
Y / B : Yellow / Black
Y / Bl : Yellow / Blue
Y / R : Yellow / Red
2
P
8
Bl
6E2-12 ENGINE AND EMISSION CONTROL SYSTEM (SFI FOR G13)
1 B Ground for ECM / PCM
2 B / Or Ground for drive circuit
3 B / Or Ground for drive circuit
4 V / R Canister purge valve
5 G / W Power steering pressure switch
6 V / W IAC valve
7 Bl Heater of HO2S-1
8 Bl / Or No.4 fuel injector
9 Bl / R No.1 fuel injector
10 G Ground for sensor circuit
11 B / W CMP sensor
12 —— ———
13 R Heated oxygen sensor-1
14 Lg / R Coolant temp. sensor
15 Gr / R Intake air temp. sensor
16 —— ———
17 Br / Y Electric load (+)
18 —— ———
IG coil assembly for
No.2 and 3 spark plugs
IG coil assembly for
No.1 and 4 spark plugs
21 Bl / B No.2 fuel injector
22 P Power supply for sensor
23 W CKP sensor (+)
24 B CKP sensor (–)
25 —— ———
26 G MAP sensor
27 —— ———
28 V / G Immobilizer indicator lamp
29 —— ———
30 —— ———
31 Bl / Y No.3 fuel injector
1 G / R A / C compressor clutch
2 R / Y EGR valve (stepper motor coil 1)
3 R / G Data link connector
4 Lg / B Heater of HO2S-2
5 R / B Power source
6 R / B Power source
7 W Backup power source
8 R EGR valve (stepper motor coil 3)
9 R / Bl EGR valve (stepper motor coil 2)
10 Gr Ground for main relay
11 Y / B “2”-range signal (A / T)

ENGINE AND EMISSION CONTROL SYSTEM (SFI FOR G13) 6E2-31
1. Viewed from terminal side
Sensor-1
Sensor-2
“VB”
“GND”
HEATED OXYGEN SENSOR (Sensor-1 and Sensor-2)
Oxygen Sensor Heater Inspection
1) Disconnect sensor coupler.
2) Using ohmmeter, measure resistance between terminals “V
B”
and “GND” of sensor coupler.
NOTE :
Temperature of sensor affects resistance value largely.
Make sure that sensor heater is at correct temperature.
Resistance of oxygen sensor heater :
11.7 – 14.3 Ω at 20C, 68F
If found faulty, replace oxygen sensor.
3) Connect sensor coupler securely.
Removal
WARNING:
To avoid danger of being burned, do not touch exhaust sys-
tem when system is hot. Oxygen sensor removal should be
performed when system is cool.
1) Disconnect negative cable at battery.
2) For sensor-1, disconnect coupler of heated oxygen sensor and
release its wire harness from clamps and remove exhaust man-
ifold cover (1).
3) For sensor-2, disconnect coupler of heated oxygen sensor and
release its wire harness from clamp and hoist vehicle.
4) Remove heated oxygen sensor (2) from exhaust manifold or ex-
haust pipe.
Installation
Reverse removal procedure noting the following.

Tighten heated oxygen sensor (2) to specified torque.
Tightening Torque for heated oxygen sensor
(a): 45 N·m (4.5 kg-m, 32.5 lb-ft)

Connect coupler of heated oxygen sensor (2) and clamp wire har-
ness securely.

After installing heated oxygen sensor (2), start engine and check
that no exhaust gas leakage exists.