O2 sensor SUZUKI SWIFT 2005 2.G Service Workshop Manual

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Terminal arrangement of coupler viewed from terminal side
NOTE
Molded numbers (1) have no relation to the terminal numbers.

TerminalCircuitTerminal Circuit
G28-1 To turn signal and hazard warning relay (turn R) G28-17
—
G28-2 —G28-18 —
G28-3 —G28-19 —
G28-4 —G28-20 —
G28-5 To SDM (air bag warning light control signal) G28-21 —
G28-6 —G28-22 To lighting switch (high beam)
G28-7 CAN communication line (Active High signal) G28-23 —
G28-8 CAN communication line (Active High signal) G28-24 —
G28-9 CAN communication line (Active Low signal) G 28-25 To P/S control module (EPS warning light
control signal)
G28-10 CAN communication line (Active Low signal) G28-26 To turn signal and hazard warning relay (turn L)
G28-11 —G28-27 —
G28-12 —G28-28 —
G28-13 —G28-29 Fuel level sensor ground
G28-14 —G28-30 To fuel level sensor
G28-15 —G28-31 To METER fuse
G28-16 GND G28-32 To RADIO fuse
G28-1 G28-16
G28-32
G28-17
1 1I4RS0A930003-02

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Component Location
Audio System Component LocationS7RS0B9303001
NOTE
Below figure shows left-hand steering vehicle. For right-hand steering vehicle, parts with (*) are
installed at the opposite side.

Diagnostic Information and Procedures
Speedometer and VSS Symptom DiagnosisS7RS0B9304001
Tachometer Symptom DiagnosisS7RS0B9304002
6
5
(a)
7
1
2
2
3
3
*4
I6RS0C930003-01
1. Radio assembly
3. Rear speaker5. Antenna 7. GPS antenna (if equipped)
2. Front speaker 4. Antenna feeder6. Antenna base : 5 N⋅m (0.5 kgf-m, 4.0 lb-ft)
Condition Possible cause Correction / Reference Item
Speedometer shows no
operation or incorrect
operation Circuit fuse blown
Replace fuse and check for short circuit.
Front wheel speed sensor or sensor ring
faulty (M/T model) Check front wheel speed sensor or sensor ring
referring to “Front / Rear Wheel Speed Sensor
On-Vehicle Inspection in
Section 4E” or “Front
Wheel Encoder On-Vehicle Inspection in
Section 4E”.
Output shaft speed sensor / VSS faulty
(A/T model) Check output shaft
speed sensor / VSS
referring to “Output Shaft Speed Sensor
Inspection in Section 5A”.
Wiring and/or grounding faulty Repair as necessary.
Combination meter faulty Replace combination meter.
ECM faulty Replace after making sure that none of above
parts is faulty.
ConditionPossible cause Correction / Reference Item
Tachometer shows no
operation or incorrect
operation Circuit fuse blown
Replace fuse and check for short circuit.
Wiring and/or grounding faulty Repair as necessary.
Combination meter faulty Replace combination meter.
ECM faulty Replace after making sure that none of above
parts is faulty.

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Engine Coolant Temperature (ECT) Meter Symptom DiagnosisS7RS0B9304003
Fuel Meter Symptom DiagnosisS7RS0B9304004
Low Fuel Warning Light Symptom DiagnosisS7RS0B9304005
NOTE
Confirm that fuel meter is in good condition before referring to the following possible causes.
• When fuel level sensor circuit is open or short, fuel meter indicates empty even if fuel tank does not empty.
• The low fuel warning light comes ON when fu el level is lower than specification below.

Low fuel warning light operation:
ConditionPossible cause Correction / Reference Item
Engine coolant
temperature (ECT) meter
shows no operation or
incorrect operation Circuit fuse blown
Replace fuse and check for short circuit.
ECT sensor faulty Check ECT sensor referring to “ECT Sensor
Inspection in Section 1C”.
Wiring and/or grounding faulty Repair as necessary.
Combination meter faulty Replace combination meter.
ECM faulty Replace after making sure that none of above
parts is faulty.
ConditionPossible cause Correction / Reference Item
Fuel meter shows no
operation or incorrect
operation Circuit fuse blown
Replace fuse and check for short circuit.
Fuel level sensor faulty Check fuel level sensor referring to “Fuel Level
Sensor Inspection”.
Wiring and/or grounding faulty Repair as necessary.
Combination meter faulty Replace combination meter.
Low fuel warning light operation: Fuel amount: Resistance of fuel level sensor:
ON Approx. 6.5 liter Approx. 251 Ω
Condition Possible cause Correction / Reference Item
Low fuel warning light
does not come ON when
fuel level is lower than
specification Circuit fuse blown
Replace fuse and check for short circuit.
Fuel level sensor faulty Check fuel level sensor referring to “Fuel Level
Sensor Inspection”.
Wiring and/or grounding faulty Repair as necessary.
Combination meter faulty Replace combination meter.
Low fuel warning light
comes ON steady Low fuel
Refill fuel.
Fuel level sensor faulty Check fuel level sensor referring to “Fuel Level
Sensor Inspection”.
Wiring and/or grounding faulty Repair as necessary.
Combination meter faulty Replace combination meter.

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A/T Shift Position Indicator Symptom Diagnosis (A/T Model)S7RS0B9304009
Charge Warning Light Symptom DiagnosisS7RS0B9304010
Main Beam (High Beam) Indicator Symptom DiagnosisS7RS0B9304011
ConditionPossible cause Correction / Reference Item
All A/T shift position
indicator does not light up Circuit fuse blown
Replace fuse and check for short circuit.
Transmission range sens or (shift switch)
faulty Check transmission range sensor referring to
“Transmission Range Sensor (Shift Switch)
Inspection and Adjustment in Section 5A”.
Wiring and/or grounding faulty Repair as necessary.
Combination meter faulty Replace combination meter.
TCM faulty Replace after making sure that none of above
parts is faulty.
ConditionPossible cause Correction / Reference Item
Charge warning light
does not come ON Circuit fuse blown
Replace fuse and check for short circuit.
Wiring and/or grounding faulty Repair as necessary.
Combination meter faulty Replace combination meter.
BCM faulty Replace after making sure that none of above
parts is faulty.
Charge warning light stay
ON Charging system faulty
Check charging system.
Wiring and/or grounding faulty Repair as necessary.
Combination meter faulty Replace combination meter.
BCM faulty Replace after making sure that none of above
parts is faulty.
ConditionPossible cause Correction / Reference Item
Main beam (high beam)
indicator does not come
ON Circuit fuse blown
Replace fuse and check for short circuit.
Combination switch faulty Check combination switch referring to
“Headlight Switch (in Lighting Switch)
Inspection in Section 9B”.
Wiring and/or grounding faulty Repair as necessary.
Combination meter faulty Replace combination meter.
Main beam (high beam)
indicator stay ON Combination switch faulty
Check combination switch referring to
“Headlight Switch (in Lighting Switch)
Inspection in Section 9B”.
Wiring and/or grounding faulty Repair as necessary.
Combination meter faulty Replace combination meter.

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Information Display Symptom Diagnosis (If Equipped)S7RS0B9304015
NOTE
This thermometer indicates the ambient temperature in back of front bumper member. Under any one
of the following listed conditions, however, even when the ambient temperature goes up, the
thermometer display does not rise so as to correct the rise of the ambient temperature caused by the
radiant heat of the engine. When the ambient temperature drops, the thermometer reading follows the
change in the temperature.
Be sure to bear this in mind when diagnosing trouble.
• The vehicle speed is 30 km/h (18 mph) or lower.
• Vehicle speed signal is faulty.
• The ignition switch is turned on again within 2 hours.

ConditionPossible cause Correction / Reference Item
No displaying of
information display Circuit fuse Blown
Replace fuse and check for short circuit.
Wiring and/or grounding faulty Repair as necessary.
Information display unit faulty Replace unit.
Incorrect thermometer
display Outside air temperature sensor faulty
Check outside air temperature sensor referring
to “Outside Air Temperature Sensor Inspection
(If Equipped)”.
Vehicle speed signal faulty Check ECM for DTC referring to “DTC Check
in Section 1A”.
Wiring and/or grounding faulty Repair as necessary.
Information display unit faulty Replace unit.
BCM faulty Replace after making sure that none of above
parts is faulty.
Display of thermometer
does not change at –30
°C Outside air temperature is –30
°C (–22
° F) or less —
Outside air temperature sensor faulty Check outside air temperature sensor referring
to “Outside Air Temperature Sensor Inspection
(If Equipped)”.
Information display unit faulty Replace unit.
BCM faulty Replace after making sure that none of above
parts is faulty.
Display of thermometer
does not change at 50
°C Outside air temperature is 50
°C (122
° F) or more —
Outside air temperature sensor faulty Check outside air temperature sensor referring
to “Outside Air Temperature Sensor Inspection
(If Equipped)”.
Information display unit faulty Replace unit.
BCM faulty Replace after making sure that none of above
parts is faulty.
Display of thermometer
does not change at “– – –
°C” Outside air temperature sensor faulty
Check outside air temperature sensor referring
to “Outside Air Temperature Sensor Inspection
(If Equipped)”.
Outside air temperature sensor circuit is
open or short Repair as necessary.
Wiring and/or grounding faulty Repair as necessary.
Information display unit faulty Replace unit.
BCM faulty Replace after making sure that none of above
parts is faulty.

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Combination Meter Removal and InstallationS7RS0B9306003
Removal1) Disconnect negative (–) cable at battery.
2) Remove steering column hole cover (1) pulling it in arrow direction shown in figure.
3) Remove combination mete r cluster panel (1) pulling
it in arrow direction shown in figure.
4) Remove screws (1) fast ening combination meter.
5) Remove combination me ter (2) pulling it arrow
direction as shown.
Installation
Reverse removal procedure.
Fuel Level Sensor Removal and InstallationS7RS0B9306004
For removal and installation, refer to “Main Fuel Level
Sensor Removal and Installation in Section 1G”.
Fuel Level Sensor InspectionS7RS0B9306005
• Check that resistance between terminals “a” and “b” of fuel level sensor changes with change of float
position.
• Check resistance between terminals “a” and “b” at each float position in the following.
If the measured value is out of specification, replace.
Fuel level sensor specifications
Oil Pressure Switch Removal and InstallationS7RS0B9306006
For removal and installation , refer to “Oil Pressure
Check in Section 1E”.
1
I4RS0B930005-02
1
I4RS0B930006-02
1
2
I4RS0A930012-02
Float Position Resistance (Ω)
Full Upper “C” 160 mm
(6.30 in.) 40
± 2
Full Lower “D” 19 mm
(0.75 in.) 280
± 3.3
1. Fuel pump 2. Float
“b”“a”
2
“C”
“D”
1
I6RS0C930004-01

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Oil Pressure Switch InspectionS7RS0B9306007
1) Disconnect oil pressure switch (1) lead wire.
2) Check for continuity between oil pressure switch terminal (2) and cylinder block (3) as shown.
If check result is not as specified, replace oil
pressure switch (1).
Oil pressure sensor specification
During engine running: No continuity
At engine stop: Continuity
Engine Coolant Temperature (ECT) Sensor
Inspection
S7RS0B9306008
Check engine coolant temperat ure sensor for resistance,
refer to “ECT Sensor Inspection in Section 1C”.
Brake Fluid Level Switch InspectionS7RS0B9306009
Check for continuity between terminals of brake fluid
level switch coupler (1). If found defective, replace
switch.
Brake fluid level switch specification
OFF position (float up): No continuity
ON position (float down): Continuity
Parking Brake Switch InspectionS7RS0B9306010
Check for continuity between parking brake switch
terminal and body ground as shown in figure. If found
defective, replace switch.
Parking brake switch specification
OFF position (parking brake released): No continuity
ON position (parking brake lever pulled up):
Continuity
4. Engine oil filter F: Front
I3RM0A930009-01
1. Parking brake switch 2. Parking brake lever
1
I4RS0B930007-01
12
I4RS0A930014-01

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Door Switch (Front / Rear Door) InspectionS7RS0B9306011
Remove door switch from body and check switch for
continuity. If found defective, replace switch.
Door switch (front / rear door) specification
OFF position (Door closed): No continuity
ON position (Door open): Continuity
Rear End Door Switch InspectionS7RS0B9306012
Check for continuity between terminal “a” and “b” shown
in the following.
If check result is not as specified, replace switch.
Rear end door switch specification
Rear end door closed: No continuity
Rear end door opened: Continuity
Outside Air Temperature Sensor Removal and
Installation (If Equipped)
S7RS0B9306013
Removal
1) Disconnect negative (–) cable at battery.
2) Remove front bumper referring to “Front Bumper and Rear Bumper Components in Section 9K”.
3) Disconnect connector from outside air temperature sensor.
4) Remove outside air temperature sensor (1) from front bumper member.
Installation
Reverse removal procedure for installation.
Outside Air Temperature Sensor Inspection (If
Equipped)
S7RS0B9306014
Measure resistance of outside air temperature sensor
using an ohmmeter.
If resistance is out of specif ication, replace outside air
temperature sensor.
Outside air temperature sensor resistance
1.61 kΩ – 1.79 k Ω at 25 °C (77 °F)
I3RH0A930004-01
a
b
I4RS0A930015-01
“A”: Resistance “B”: Temperature
1
I4RS0A930016-01
“B”
“A”
5.50
1.70 0
32 25
77
F
I4RS0A930017-01

Downloaded from www.Manualslib.com manuals search engine Table of Contents 10- i
10
Section 10
CONTENTS
Control Systems
Precautions ............................................... 10-1
Precautions........................................................... 10-1
Precautions for Control Systems......................... 10-1
Body Electrical Contro l System ........... 10B-1
Precautions......................................................... 10B-1
Precautions in Diagnosing Trouble ................... 10B-1
General Description ........................................... 10B-1 BCM General Description ................................. 10B-1
CAN Communication System Description......... 10B-2
Theft Deterrent Light ......................................... 10B-3
Security Alarm Description (If Equipped) .......... 10B-3
Schematic and Routing Diagram ...................... 10B-4 Body Electrical Control System Wiring Circuit Diagram .......................................................... 10B-4
Connector Layout Diagram of BCM and Junction Block Assembly ................................ 10B-7
Component Locatio n ......................................... 10B-8
BCM and Related System Component Location .......................................................... 10B-8
Diagnostic Information an d Procedures .......... 10B-9
BCM Self-Diagnosis Function ........................... 10B-9
Body Electrical Control System Check............ 10B-10
Scan Tool Data ............................................... 10B-12
DTC Table ....................................................... 10B-14
DTC Check ..................................................... 10B-14
DTC Clearance ............................................... 10B-15
BCM Power Circuit and Ground Circuit Check 10B-16
DTC B1133 (DTC No. 1133): Battery Voltage Too High ....................................................... 10B-17
DTC B1141 / DTC B1142 (No. 1141 / No. 1142): Outside Air Temperature (Ambient
Temp.) Sensor Circuit Ma lfunction ................ 10B-18
DTC B1150 (No. 1150): Air Bag Communication Circuit Malfunction .............. 10B-19
DTC B1157 (No. 1157): Air Bag Deployment Signal Input ................................................... 10B-20
DTC B1170 (No. 1170 ): EEPROM Access
Error .............................................................. 10B-21
DTC U0155 (No. 0155): Lost Communication with Instrument Panel Cluster (IPC) Control
Module .......................................................... 10B-21
DTC U1073 (No. 1073): Control Module Communication Bus Off ................................ 10B-24 DTC U1100 (No. 1100): Lost Communication
with ECM ....................................................... 10B-25
DTC U1101 (No. 1101): Lost Communication with TCM ....................................................... 10B-27
DTC U1144 (No. 1144): Lost Communication with Keyless Start Control Module ................ 10B-29
Inspection of BCM and its Circuits .................. 10B-31
Repair Instructions ........... ...............................10B-39
BCM (Included in Junction Block Assembly) Removal and Installation ............................... 10B-39
Outside Air Temperature Sensor Removal and Installation .............................................. 10B-39
Outside Air Temperature Sensor Inspection ... 10B-39
Security Alarm Mode Selection Procedure (If Equipped) ...................................................... 10B-39
Special Tools and Equipmen t .........................10B-40
Special Tool .................................................... 10B-40
Immobilizer Control Syst em ................. 10C-1
Precautions.........................................................10C-1
Precautions in Diagnosing Troubles .................10C-1
Precaution in Replacing ECM ...........................10C-1
Precautions in Handli ng Immobilizer Control
System ............................................................10C-1
General Description ...........................................10C-2 Immobilizer Control System Introduction ..........10C-2
Immobilizer Control System Components Location...........................................................10C-3
On-Board Diagnostic System Description (Self-diagnosis Function) ................................10C-3
Schematic and Routing Diag ram ......................10C-4
Immobilizer Control System Wiring Circuit Diagram...........................................................10C-4
Diagnostic Information an d Procedures ..........10C-5
Immobilizer Control System Check ...................10C-5
Diagnostic Trouble Code (DTC) Check.............10C-5
Diagnostic Trouble Code (DTC) Clearance ......10C-6
Diagnostic Trouble Code (DTC) Table ..............10C-6
Scan Tool Data .................................................10C-7
Immobilizer Indicator Lamp Does Not Come ON with Ignition Switch ON and Engine Stop ..10C-7
Immobilizer Indicator Lamp Remains ON after Engine Starts...................................................10C-8
DTC P1614: Transponder Re sponse Error .......10C-9

Downloaded from www.Manualslib.com manuals search engine 10B-1 Body Electrical Control System:
Control Systems
Body Electrical Control System
Precautions
Precautions in Diagnosing TroubleS7RS0BA200001
• Diagnostic information stored in BCM memory can be cleared as well as checked by using SUZUKI scan tool.
Before using scan tool, read its Operator ’s (Instruction) Manual carefully to have good understanding as to what
functions are available and how to use it.
• Be sure to read “Precautions for Electrical Circuit Serv ice in Section 00” before inspection and observe what is
written there.
• Communication of ECM, TCM (if equipped), ABS/ESP ® control module, steering angle sensor (ESP ® model),
keyless start control module (if equipped), combinatio n meter and BCM is established by CAN (Controller Area
Network). For detail of CAN communication for BCM, refer to “CAN Communication System Description”.
Therefore, handle CAN communication line with care referr ing to “Precaution for CAN Communication System in
Section 00”.
General Description
BCM General DescriptionS7RS0BA201001
The Body electrical Control Module (BCM) is incorporated in junction block assembly. Do not attempt removal of BCM
from junction block assembly as it may cause contact failure.
The BCM incorporates relays and controllers which are used for the following systems and controls them.
• Power door lock
• Keyless entry (if equipped)
• Door lock function of keyle ss start system (if equipped)
• Rear wiper
• Combination meter
• Interior light
• Warning buzzer
• Rear end door window defogger and door mirror heater (if equipped)
• Rear end door opener
• Theft deterrent light
Also, the BCM has a function to cause the interior light and open door warning lamp in the combination meter to turn
off when any door is left open for longer than 15 minutes to reduce wasteful battery consumption.
In addition, it is possible to check operation of actuator whic h is controlled by BCM by using the output test function of
SUZUKI scan tool to operate actuator simulatively.