battery voltage SUZUKI SWIFT 2008 2.G Service Manual Online

Downloaded from www.Manualslib.com manuals search engine 8B-10 Air Bag System:
Diagnostic Information and Procedures
Air Bag Diagnostic System CheckS7RS0B8204001
WARNING!
To avoid deployment when troubleshooting
the air bag system, do not use electrical test
equipment such as a battery powered or AC
powered voltmeter, ohmmeter, etc., or any
type of electrical equipment other than that
specified in this manual. Do not use a non-
powered probe type tester.
Instructions in this manual must be followed
carefully, otherwise personal injury may
result.

CAUTION!
The order in which DTCs are diagnosed is
very important. Failure to diagnose the DTCs
in the order specified may result in extended
diagnostic time, incorrect diagnosis and
incorrect parts replacement.

The diagnostic procedures used are designed to find
and repair air bag system malfunctions.
To get the best results, it is important to use the
diagnostic flow and follow the sequence in the following.1) Perform the “Air Bag Diagnostic System Check Flow”.
(The “Air Bag Diagnostic System Check Flow” must
be the starting point of any air bag system diagnosis.
The “Air Bag Diagnostic System Check Flow” checks
for proper “AIR BAG” warning right operation
through “AIR BAG” warning right and whether air
bag DTCs exist.)
2) Refer to the proper diagnost ic flow as directed by the
“Air Bag Diagnostic System Check Flow”.
(The “Air Bag Diagnostic System Check Flow” will
lead you to the correct flow to diagnose any air bag
system malfunctions. Bypassing these procedures
may result in extended diagnostic time, incorrect
diagnosis and incorrect parts replacement.)
3) Repeat the “Air Bag Diagnostic System Check Flow” after any repair or diagnostic procedures have been
performed.
(Performing the “Air Bag Diagnostic System Check
Flow” after all repair or diagnostic procedures will
ensure that the repair has been made correctly and
that no other malfunctions exist.)
Air Bag Diagnostic System Check FlowS7RS0B8204002
Flow test description
Step 1: Check that “AIR BAG” warning right lights.
Step 2: Check that “AIR BAG” warning right lights.
Step 3: Check that “AIR BAG” warning right flas hes 6 times after ignition switch is turned ON.
Step 4: Check that history codes are in SDM memory.
Step 5: Check that current code is in SDM memory.
6. “A/BAG” fuse in junction block assembly (including BCM) 13. Side curtain-air bag (inflator) module (if equipped)
7. Air bag harness in floor harness 14. Air bag harness in instrument panel harness
Step Action YesNo
1 1) Make sure that battery voltage is about 11 V or higher.
2) Note “AIR BAG” warning right as ignition switch is turned
ON.
Does “AIR BAG” warning ri ght come ON when ignition
switch is turned ON? Go to Step 2.
Proceed to ““AIR BAG”
Warning Right Does Not
Come ON”.
2 Does “AIR BAG” warning right come ON steady? Proceed to ““AIR BAG”
Warning Right Comes
ON Steady”.Go to Step 3.
3 Does “AIR BAG” warning right turn OFF, after flashing 6
times? “AIR BAG” warning right
circuit is in good
condition. Go to Step 4.“AIR BAG” warning right
circuit is in good
condition. Go to Step 5.

Downloaded from www.Manualslib.com manuals search engine Air Bag System: 8B-13
Scan Tool DataS7RS0B8204006
Data list of SDM
Definition
Back Up Volt (V)
This parameter indicates the capacity of the backup
condenser installed to maintain the ignition current (as
much as possible) even when the power supply to SDM
that ignites the inflator is shut off.
Battery Voltage (V)
Battery voltage is an analog input signal read by SDM.
System ID (4ch/8ch)
This parameter indicates the number of initiator circuits.
Driv A/B Ini Res (Driver air bag initiator resistance)
(ohm)
This parameter indicates the resistance of the driver air
bag initiator circuit. Pass A/B Ini Res (Passenger air bag initiator
resistance) (ohm)
This parameter indicates the
resistance of the passenger
air bag initiator circuit.
Driv Preten Ini Res (Dri ver pretensioner initiator
resistance) (ohm)
This parameter indicates the resistance of the driver seat
belt pretensioner initiator circuit.
Pass Preten Ini Res (Passenger pretensioner
initiator resistance) (ohm)
This parameter indicates the resistance of the passenger
seat belt pretensioner initiator circuit.
Driv Sidebag Ini Res (Driver side-air bag initiator
resistance) (ohm)
This parameter indicates the resistance of the driver
side-air bag initiator circuit.
Pass Sidebag Ini Res (Passenger side-air bag
initiator resistance) (ohm)
This parameter indicates the resistance of the
Passenger side-air bag initiator circuit.
Driv curtain Ini Res (Driver side curtain-air bag
initiator resistance) (ohm)
This parameter indicates the re sistance of the driver side
curtain-air bag initiator circuit.
Pass curtain Ini Res (Passenger side curtain-air bag
initiator resistance) (ohm)
This parameter indicates the resistance of the passenger
side curtain-air bag initiator circuit.
“AIR BAG” Warning Right Comes ON SteadyS7RS0B8204007
Wiring Diagram Normal Condition /
Reference Value
) Battery voltage 10 – 14 V
) Back up volt 27.0 – 33.0 V
) System ID 4ch or 8ch
) Driv A/B Ini Res 2.1 – 3.8 ohm
) Pass A/B Ini Res 1.8 – 2.8 ohm
) Driv Preten Ini Res 1.8 – 2.9 ohm
) Pass Preten Ini Res 1.8 – 2.9 ohm
) Driv Sidebag Ini Res 1.8 – 2.6 ohm
) Pass Sidebag Ini Res 1.8 – 2.6 ohm
) Driv curtain Ini Res 1.8 – 2.8 ohm
) Pass curtain Ini Res 1.8 – 2.8 ohm
1
2 GRN
11
BLK
L29-27
L29-2
L29-28 WL
E1
IG
L29-32
ST
10
8
“L29”
RED
PPL/WHT
7
3
4 “L04”
“G34”
“G33”
“G28”
“G32”
5 6
“G32”
YEL/BLK
YEL/BLK
RED/BLK
9
I7RS0B820002-02
1. From main fuse 5. “AIR BAG” warning right in combination meter 9. To DLC
2. Ignition switch 6. Lamp driver 10. SDM
3. “METER” fuse 7. Junction block assembly 11. Ground for air bag system
4. “A/BAG” fuse 8. BCM

Downloaded from www.Manualslib.com manuals search engine Air Bag System: 8B-19
CAUTION!
• Be sure to perform “Air Bag Diagnostic System Check” before starting diagnosis according to flow.
• When measurement of resistance or voltage is required in this flow, use a tester along with a correct terminal adapter from special tool (Connector test adapter kit).
• When a check for proper connection is required, refer to “Inspection of Intermittent and Poor Connections”.
• If there is open circuit in the air bag wire harnes s, connector or terminal is found damaged, replace
the wire harness, connector and terminal as an assembly.

DTC Will Set when
The power source voltage to SDM is above an approx. 21 V for specified time.
Flow Test Description
Step 1: Check if voltage applie d to SDM is within normal range.
Step 2: Check if DTC B1016 still exists.
DTC Troubleshooting
NOTE
Upon completion of inspection and repair work, perform the following items.
• Reconnect all air bag system components and ensure all components are properly mounted.
• Clear DTCs referring to “DTC Clearance”, if any.
• Repeat “Air Bag Diagnostic System Check” to confirm that the trouble has been corrected.

Step Action YesNo
1 1) With ignition switch OFF, disconnect SDM connector.
2) Check proper connection to SDM at “L29-27” terminal.
3) If OK, turn ignition switch ON and then check voltage between “L29-27” terminal on SDM connector and body
ground.
Special tool
(A): 09932-76010
Is voltage 14 V or less? Go to Step 2.
Check charging system
and repair as necessary
referring to “Generator
Test (Overcharged
Battery Check) in
Section 1J”.
2 1) With ignition switch OFF, reconnect SDM connector. With ignition switch ON , is DTC B1016 indicated? Substitute a known-
good SDM and recheck.
Intermittent trouble.
Check for intermittent
trouble referring to
“Inspection of
Intermittent and Poor
Connections” If OK,
substitute a known-
good SDM and recheck.
(A)
"L29-27"
I7RS0A820005-08

Downloaded from www.Manualslib.com manuals search engine 8B-20 Air Bag System:
DTC B1017: Power Source Voltage LowS7RS0B8204013
Wiring Diagram
CAUTION!
• Be sure to perform “Air Bag Diagnostic System Check” before starting diagnosis according to flow.
• When measurement of resistance or voltage is required in this flow, use a tester along with a correct terminal adapter from special tool (Connector test adapter kit).
• When a check for proper connection is required, refer to “Inspection of Intermittent and Poor Connections”.
• If there is open circuit in the air bag wire harnes s, connector or terminal is found damaged, replace
the wire harness, connector and terminal as an assembly.

DTC Will Set when
The power source voltage is below an approx. 8 V for specified time.
Flow Test Description
Step 1: Check if voltage on ba ttery is within normal range.
Step 2: Check if voltage applie d to SDM is within normal range.
Step 3: Check if voltage applied to “L04” connector is within normal range.
Step 4: Check if DTC B1017 still exists.
DTC Troubleshooting
1 2
3
GRN
RED
6
BLK
L29-27
L29-28 IG
E1 5
4
“L29”
“L04”
“G32”
I7RS0A820009-02
1. From main fuse 3. “A/BAG” fuse 5. SDM
2. Ignition switch 4. Junction block assembly 6. Ground for air bag system
Step Action YesNo
1 1) Measure voltage on battery.
Is voltage 11 V or more? Go to Step 2.
Check charging system
and repair as necessary
referring to “Generator
Test (Undercharged
Battery Check) in
Section 1J”.

Downloaded from www.Manualslib.com manuals search engine Air Bag System: 8B-21
NOTE
Upon completion of inspection and repair work, perform the following items.
• Reconnect all air bag system components and ensure all components are properly mounted.
• Clear DTCs referring to “DTC Clearance”, if any.
• Repeat “Air Bag Diagnostic System Check” to confirm that the trouble has been corrected.

2 1) With ignition switch OFF, disconnect SDM connector.2) Check proper connection to SDM at “L29-27” terminal.
3) If OK, turn ignition switch ON and then check voltage between “L29-27” terminal on SDM connector and body
ground.
Special tool
(A): 09932-76010
Is voltage 8 V or more? Go to Step 4. Go to step 3.
3 1) With ignition switch OFF, disconnect on connector “L04” junction block assembly.
2) Check proper connection at “L04-1” terminal.
3) If OK, turn ignition switch ON and then check voltage between “L04-1” terminal and body ground.
Is voltage 8 V or more? Go to Step 4. Check circuit from
battery to “L04”
connector and charging
system.
4 1) With ignition switch OFF, reconnect SDM connector. With ignition switch ON, does DTC B1017 exist? Substitute a known-
good SDM and recheck.
Check charging system
and repair as necessary
referring to “Generator
Test (Undercharged
Battery Check) in
Section 1J”.
Step Action Yes No
(A)
"L29-27"
I7RS0A820005-08
"L04-1"
I4RS0A820012-01

Downloaded from www.Manualslib.com manuals search engine Air Bag System: 8B-125
Specifications
Tightening Torque SpecificationsS7RS0B8207001
NOTE
The specified tightening torque is also described in the following.
“Air Bag System Components, Wiring and Connectors Location”

Reference:
For the tightening torque of fastener not specified in this section, refer to “Fasteners Information in Section 0A”.
Special Tools and Equipment
Use of Special ToolsS7RS0B8208001
WARNING!
To avoid deployment when troubleshooting
the air bag system, do not use electrical test
equipment such as a battery powered or AC
powered voltmeter, ohmmeter, etc., or any
type of electrical equipment other than that
specified. Do not use a non-powered probe
type tester.
Instructions must be followed carefully,
otherwise personal injury may result.

You should be familiar with the tools listed under the
heading “Special Tool”. You should be able to measure
voltage and resistance. You should be familiar with
proper use of a scan tool such as Air Bag Driver /
Passenger Load Tool, Connector Test Adapter Kit and
the Digital Multimeter.
Special tool
(A): 09932–76010 Connector Test Adapter Kit
This must be used whenever a diagnostic procedure
requests checking or probing a terminal.
Using the appropriate adapter in the special tool will
ensure that no damage to the terminal will occur from the
multimeter probe, such as spreading or bending.
Fastening part
Tightening torque
Note
N ⋅mkgf-mlb-ft
SDM bolt 9 0.9 6.5 )
Driver air bag (inflator) module mounting bolt 9 0.9 6.5 )
Passenger air bag (inflator) module attaching
bolt 23 2.3 16.5)
Sleeve lock nut 2.5 0.25 2.0 )
Side curtain-air bag (inflator) module attaching
bolts 11 1.1 8.0)
Forward-sensor mounting bolt 9 0.9 6.5 )
Side-sensor bolt 9 0.9 6.5 )
I3JA01820041-01

Downloaded from www.Manualslib.com manuals search engine 9B-2 Lighting Systems:
Interior Light System LocationS7RS0B9203002
Diagnostic Information and Procedures
Headlight Symptom DiagnosisS7RS0B9204001
Headlight Leveling System Symptom Diagnosis (If Equipped)S7RS0B9204002
13
2
4
I4RS0A920002-01
1. Dome light 3. Door switches (both sides)
2. Luggage compartment light (if equipped) 4. Rear end door switch (included in rear end door lock)
ConditionPossible cause Correction / Reference Item
Headlights do not light up Bulbs blown Replace bulbs.
Lighting or dimmer switch faulty Check headlight switch referring to “Headlight
Switch (in Lighting Switch) Inspection”.
Headlight R and L fuses blown Replace fuse and check for short circuit.
Wiring or grounding faulty Repair circuit.
Only one headlight does
not light up Bulb blown
Replace bulb.
Headlight R or L fuse blown Replace fuse and check for short circuit.
Wiring or grounding faulty Repair circuit.
Only one beam (“Hi” or
“Lo”) does not light Bulb blown
Replace bulb.
Lighting or dimmer switch faulty Check headlight switch referring to “Headlight
Switch (in Lighting Switch) Inspection”.
Wiring or grounding faulty Repair circuit.
ConditionPossible cause Correction / Reference Item
Optical axes of both
headlights do not change Circuit fuse blown
Replace fuse and check for short circuit.
Headlight leveling switch faulty Check headlight leveling switch referring to
“Headlight Leveling Switch Inspection (If
Equipped)”.
Supply voltage too low Check charging system referring to “Generator
Test (Undercharged Battery Check) in Section
1J”.
Wiring or grounding faulty Repair circuit.
Optical axis of only one
headlight does not
change Circuit fuse blown
Replace fuse and check for short circuit.
Headlight leveling actuator faulty Check actuator referring to “Headlight Leveling
Actuator Inspection (If Equipped)”.
Headlight housing deformed Replace headlight housing.
Wiring or grounding faulty Repair circuit.

Downloaded from www.Manualslib.com manuals search engine Lighting Systems: 9B-3
Turn Signal and Hazard Warning Light Symptom DiagnosisS7RS0B9204003
Clearance, Tail and License Plate Light Symptom DiagnosisS7RS0B9204004
ConditionPossible cause Correction / Reference Item
Flash rate high or one
side only flashes Bulb blown on “flash rate high”-side
Replace bulb.
Incorrect bulb Replace bulb.
Turn signal / hazard warning relay faulty Check turn signal / hazard warning relay
referring to “Turn Signal and Hazard Warning
Relay Inspection”.
Open circuit or high resistance existing
either; between turn signal switch and
non lighting bulb, or between hazard
warning switch and non lighting bulb Repair circuit.
Wiring or grounding faulty Repair circuit.
No flashing
NOTE
• Use of SUZUKI scan tool makes it easy to
check whether a faulty
condition is on the
input side or output
side of BCM. For
checking procedure,
refer to “Diagnosis
Using Output Test
Function of SUZUKI
Scan Tool” under
“Scan Tool Data in
Section 10B”.
• Check each part in the order from the top of
the following list.

Circuit fuse(s) blown Replace fuse(s) and check for short circuit.
Turn signal / hazard warning relay faulty Check turn signal / hazard warning relay
referring to “Turn Signal and Hazard Warning
Relay Inspection”.
Turn signal light switch faulty Check turn signal light switch referring to “Turn
Signal Light Switch (in Lighting Switch)
Inspection”.
Hazard warning switch faulty Check hazard warning switch referring to
“Hazard Warning Switch Inspection”.
Open circuit or high resistance existing
between battery and switch Repair circuit.
Wiring or grounding faulty Repair circuit.
BCM faulty Replace after making sure that none of above
parts is faulty.
Flash rate low Supply voltage low Check charging system.
Turn signal / hazard warning relay faulty Check turn signal / hazard warning relay
referring to “Turn Signal and Hazard Warning
Relay Inspection”.
ConditionPossible cause Correction / Reference Item
All lights do not light up Circuit fuse blown Replace fuse and check for short circuit.
Lighting and dimmer switch of
combination switch faulty Check lighting and dimmer switch referring to
“Headlight Switch (in Lighting Switch)
Inspection”.
Wiring or grounding faulty Repair circuit.
Some lights do not light
up Bulb(s) blown
Replace bulb(s).
Wiring or grounding faulty Repair circuit.

Downloaded from www.Manualslib.com manuals search engine 9D-5 Wipers / Washers:
Windshield Wiper Motor InspectionS7RS0B9406005
NOTE
Make sure that battery voltage is 12 V or
more.

1) Disconnect negative (–) cable at battery.
2) Remove windshield wiper arms with wiper blades
referring to “Windshield Wiper Removal and
Installation”.
3) Remove cowl top garnish referring to “Cowl Top Components in Section 9K”.
4) Disconnect coupler from windshield wiper motor.
5) Reinstall windshield wiper arms with wiper blade. For
details, refer to Step 4) of “Installation” in “Windshield
Wiper Removal and Installation”.
6) Check windshield wiper motor for operation as
follows
• For motor operation in low speed
a. Connect battery positive (+) terminal to terminal “1” and its negative (–) terminal to
terminal “5”.
b. Check if wiper arm reciprocation speed is as specification. If check result is not as
specified, replace motor.
Specification
LH steering vehicle: 42 – 50 r/min (rpm)
RH steering vehicle: 41 – 51 r/min (rpm) • For motor operation in high speed
a. Connect battery positive (+) terminal to “2” and its negative (–) terminal to terminal “5”.
b. Check if motor revolution speed is as specification. If chec k result is not as
specified, replace motor.
Specification
LH steering vehicle: 66 – 76 r/min (rpm)
RH steering vehicle: 60 – 76 r/min (rpm)
• For automatic stop operation a. Connect battery positive (+) terminal to terminal “1” and its negative (–) terminal to
terminal “5” and let the motor turn.
b. Disconnect terminal “1” from battery positive (+) terminal, and let the motor stop.
c. Connect terminals “1” and “3” with a jumper wire, and connect terminal “4” to battery
positive (+) terminal.
Observe the motor turns once again then
stops at a specified position as shown.
d. Repeat Step a to c several times and check that the motor stops at the specified position
every time.
If check result is not satisfied, replace motor.
1 5
I4RS0B940005-012. Windshield wiper arms with wiper blades
6. Ceramic line
7. Wiper blade center
2
5
I4RS0A940011-01
4 5
31
6
6
7
2
2
I4RS0B940006-03

Downloaded from www.Manualslib.com manuals search engine 9D-7 Wipers / Washers:
Rear Wiper Motor InspectionS7RS0B9406007
NOTE
Make sure that battery voltage is 12 V or
more.

1) Make a mark (1) on rear wiper motor (2) stop position as shown.
2) Check rear wiper motor for operation as follows. • For motor operationa. Connect battery positive terminal to terminal “1” and its negative terminal to terminal “2”.
b. Check motor revolution speed as specification. If check result is not as
specified, replace motor.
Specification
35 – 45 r/min (rpm) • For automatic stop operation
a. Connect battery positive (+) terminal to terminal “1” and its negative (–) terminal to
terminal “2” and let the motor turn.
b. Disconnect terminal “2” from battery negative (–) terminal and let the motor stop.
c. Observe the motor (4) turns once again then stops at a specified position as shown.
d. Repeat Step a. to c. several times and check that the motor stops at the specified position
every time.
If check result is not satisfied, replace motor.
Windshield Wiper and Washer Switch Removal
and Installation
S7RS0B9406008
Removal
1) Disconnect negative (–) cable at battery.
2) Remove steering column hole cover (1).
3) Remove steering column covers (2). Turn steering wheel to a ccess steering column cover
rear end screws (3).
I4RS0A940018-01
1
23
I4RS0A940019-01
5. Mark
I4RS0A940020-01
1
32
I4RS0B940007-02