bcm input SUZUKI SWIFT 2008 2.G Service User Guide

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ECM Voltage Values Table for Relation of A/C Control
Repair Instructions
Operation Procedure for Refrigerant ChargeS7RS0B7226001
Refer to “Operation Procedure for Refrigerant Charge”.Terminal Wire Color Circuit Normal Value Condition
C37-14 GRY/RED Output of 5 V power
source 4.5 – 5.5 V Ignition switch turned ON
C37-15 BLK Ground for ECM Below 0.3 V Ignition switch turned ON
C37-24 LT GRN Engine coolant temp.
(ETC) sensor signal 3.3 – 3.8 V Ignition switch turned ON, ECT at 0
°C (32 ° F)
1.38 – 1.72 V Ignition switch turned ON, ECT at 50 °C (122 °F)
C37-30 BLK Ground for ECM Below 0.3 V Ignition switch turned ON
C37-55 ORN Ground for sensors Below 0.3 V Ignition switch turned ON
C37-58 BLK/ORN Ground for ECM Below 0.3 V Ignition switch turned ON E23-1 BLK/RED Main power supply 10 – 14 V Ignition switch turned ON
E23-3 RED CAN (high)
communication line
(active high signal)
for BCM and
combination meterRefer to “DTC P2101: Throttle Actu
ator Control Motor Circuit Range /
Performance in Section 1A”
E23-16 BLK/RED Main power supply 10 – 14 V Ignition switch turned ON
E23-18 WHT CAN (low)
communication line
(active low signal) for
BCM and
combination meterRefer to “DTC P2101: Throttle Actu
ator Control Motor Circuit Range /
Performance in Section 1A”
E23-19 BLU/WHT Electric load signal
for blower motor 10 – 14 V
Ignition switch turned ON, blower speed selector
OFF or between 1st and 5th position
0 – 1 V Ignition switch turned ON, blower speed selector
between 6th and HIGH position
E23-46 LT GRN Radiator fan relay
No.1 output 10 – 14 V
Ignition switch turned ON, engine coolant temp.:
below 95
°C (203 ° F), or A/C refrigerant pressure:
below 600 kPa (87 psi).
0 – 2 V Ignition switch turned ON, engine coolant temp.:
97.5
°C (207.5 °F) or higher, or A/C refrigerant
pressure: 1100 kPa (159.5 psi) or higher.
E23-47 GRY A/C compressor relay
output 10 – 14 V Engine running, A/C request signal high input
0 – 1 V Engine running, A/C request signal low input
E23-48 GRN Radiator fan relay
No.2 and No.3 output 10 – 14 V
Ignition switch turned ON, engine coolant temp.:
below 100
°C (212 °F), or A/C refrigerant
pressure: below 1200 kPa (174 psi).
0 – 2 V Ignition switch turned ON, engine coolant temp.:
102.5
°C (216.5 ° F) or higher, or A/C refrigerant
pressure: 1500 kPa (217.5 psi) or higher.
E23-55 RED A/C refrigerant
pressure sensor
signal 1.46 – 1.71 V
Engine running, A/C refrigerant pressure at 0.8
MPa (8.0 kg/cm
2) (A/C refrigerant pressure
measured by manifold gauge)
2.55 – 2.80 V Engine running, A/C refrigerant pressure at 1.6
MPa (16.0 kg/cm
2) (A/C refrigerant pressure
measured by manifold gauge)
E23-60 BRN/WHT Main power supply
relay output 10 – 14 V Ignition switch turned OFF
0 – 2 V Ignition switch turned ON

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

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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.

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Interior Light Symptom DiagnosisS7RS0B9204008
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, re fer 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.

Repair Instructions
Headlight Housing Removal and InstallationS7RS0B9206001
Removal 1) Disconnect negative (–) cable at battery.
2) Remove front bumper. Refer to “Front Bumper and Rear Bumper Componen ts in Section 9K”.
3) Remove headlight mounting bolts.
4) Detach headlight housing (1) from vehicle.
5) Disconnect couplers (2) from headlight housing (1). Installation
Reverse removal procedure noting the following.
• Install headlight mounting bolts, and then tighten
headlight mounting bolts (“1” – “3”) according to
numerical order as shown in figure.
• After installation, be sure to inspect and adjust aiming referring to “Headlight Aiming Adjustment with
Screen”.
Condition Possible cause Correction / Reference Item
Dome light does not light
up Bulb blown
Replace bulb.
Circuit fuse blown Replace fuse and check for short circuit.
Dome light switch faulty Check dome light switch.
Door switch faulty Check door switch referring to “Door Switch
(Front / Rear Door) Inspection in Section 9C”.
Wiring or grounding faulty Repair circuit.
BCM faulty Replace after making sure that none of above
parts is faulty.
Luggage compartment
light does not light up (if
equipped) Bulb blown
Replace bulb.
Rear end door switch faulty Check switch referring to “Rear End Door
Switch Inspection in Section 9C”.
Wiring or grounding faulty Repair circuit.
2 1
I4RS0A920003-01
2
1 3
I4RS0A920004-01

Downloaded from www.Manualslib.com manuals search engine Instrumentation / Driver Info. / Horn: 9C-10
Warning Buzzer Circuit Symptom DiagnosisS7RS0B9304012
NOTE
• Use of SUZUKI scan tool makes it easy to check wh ether a faulty condition is on the input side or
output side of BCM. For checking procedure, re fer 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.

Cigarette Lighter Symptom Diagnosis (If Equipped)S7RS0B9304013
Horn Symptom DiagnosisS7RS0B9304014
Condition Possible cause Correction / Reference Item
Warning buzzer shows no
sounding Circuit fuse blown
Replace fuse and check for short circuit.
Driver side door switch faulty Check driver side door switch referring to
“Door Switch (Front / Rear Door) Inspection”.
Lighting switch faulty Check lighting switch referring to “Headlight
Switch (in Lighting Switch) Inspection in
Section 9B”.
Key reminder switch faulty Check key reminder switch referring to
“Ignition Switch Inspection”.
Seat belt switch faulty (if equipped) Check seat belt switch referring to “Front Seat
Belt Inspection in Section 8A”.
Wiring and/or grounding faulty Repair as necessary.
BCM faulty Replace after making sure that none of above
parts is faulty.
ConditionPossible cause Correction / Reference Item
Cigarette lighter shows
no operation Circuit fuse blown
Replace fuse and check for short circuit.
Cigarette lighter faulty Check cigarette lighter.
Ignition switch faulty Check ignition switch referring to “Ignition
Switch Inspection”.
Wiring and/or grounding faulty Repair as necessary.
ConditionPossible cause Correction / Reference Item
Horn does not operate Circuit fuse blown Replace fuse and check for short circuit.
Horn switch faulty Check horn switch.
Horn relay faulty Check horn relay referring to “Horn Relay
Inspection”.
Wiring and/or grounding faulty Repair as necessary.
Horn faulty Check horn referring to “Horn Inspection”.

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Clock Symptom Diagnosis (If Equipped)S7RS0B9304016
Audio System Symptom Diagnosis (If Equipped)S7RS0B9304017
Radio
NOTE
Electronic part / system with undiagnosed pr oblem may cause electromagnetic interference.
Electromagnetic interference condition may have poor radio reception. To test for presence of
electromagnetic interference in part / system, perform the following procedures.
1. Turn ignition switch to OFF.
2. Systematically disconnect the electronic part / system connector(s) one at a time.
3. Turn ignition switch to ON.
4. Check any improvement in radio reception.

Display of fuel
consumption does not
change at “– – – l / 100 km
(km/l, MPG)” Vehicle is not running (instantaneous
fuel consumption mode)
—
Fuel consumption was reset (average
fuel consumption mo de, if equipped)Vehicle runs for a while.
Vehicle speed signal faulty Check ECM for DTC referring to “DTC Check
in Section 1A”.
Wiring and/or grounding faulty Repair as necessary.
ECM faulty Check input and output signal of ECM referring
to “Inspection of ECM and Its Circuits in
Section 1A”.
Information display unit faulty Replace unit.
BCM faulty Replace after making sure that none of above
parts is faulty.
Condition Possible cause Correction / Reference Item
Condition
Possible cause Correction / Reference Item
No displaying of clock Circuit fuse Blown Replace fuse and check for short circuit.
Wiring and/or grounding faulty Repair as necessary.
Clock unit faulty Replace unit.
ConditionPossible cause Correction / Reference Item
Poor radio reception Out of service area (Poor location) —
Antenna faulty Replace antenna.
Electrical part / system faulty Repair or replace electrical part / system
referring to after-mentioned NOTE.
Wiring and/or grounding faulty Repair as necessary.
Radio assembly faulty Replace radio assembly.
Radio does not operate
and speaker does not
sound Circuit fuse(s) blown
Replace fuse(s) and check for short circuit.
Wiring and/or grounding faulty Repair as necessary.
Radio assembly faulty Replace radio assembly.
Radio does not operate,
but speaker sound Wiring and/or grounding faulty
Repair as necessary.
Radio assembly faulty Replace radio assembly.
Radio is operative, but all
speakers does not sound Wiring and/or grounding faulty
Repair as necessary.
Radio assembly faulty Replace radio assembly.
Individual speaker is
noisy or inoperative Wiring and/or grounding faulty
Repair as necessary.
Speaker faulty Replace speaker.
Radio assembly faulty Replace radio assembly.
Sound quality is poor Out of service area (Poor location) —
Speaker installed incorrectly Install correctly.
Wiring and/or grounding faulty Repair as necessary.
Speaker faulty Replace speaker.
Radio assembly faulty Replace radio assembly.

Downloaded from www.Manualslib.com manuals search engine 9D-1 Wipers / Washers:
Body, Cab and Accessories
Wipers / Washers
Diagnostic Information and Procedures
Front Wiper and Washer Symptom DiagnosisS7RS0B9404001
Rear Wiper and Washer Symptom DiagnosisS7RS0B9404002
ConditionPossible cause Correction / Reference Item
Wiper malfunctions Circuit fuse blown Replace fuse and check for short circuit.
Wiper motor faulty Check wiper motor referring to “Windshield
Wiper Motor Inspection”.
Combination switch (wiper switch) faulty Check wiper switch referring to “Windshield
Wiper and Washer Switch Inspection”.
Wiring or grounding faulty Repair circuit.
Washer malfunctions Washer hose or nozzle clogged Clean or repair clogged hose or nozzle.
Circuit fuse blown Replace fuse and check for short circuit.
Washer motor faulty Check washer motor referring to “Washer
Pump Inspection”.
Combination switch (washer switch)
faulty Check washer switch referring to “Windshield
Wiper and Washer Switch Inspection”.
Wiring or grounding faulty Repair circuit.
ConditionPossible cause Correction / Reference Item
Wiper malfunctions
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 blown Replace fuse and check for short circuit.
Wiper motor faulty Check wiper motor referring to “Rear Wiper
Motor Inspection”.
Combination switch (wiper switch) faulty Check wiper switch referring to “Rear Wiper
and Washer Switch Inspection”.
Rear wiper relay faulty Check rear wiper relay referring to “Rear Wiper
Relay Inspection”.
Wiring or grounding faulty Repair circuit.
BCM faulty Replace after making sure that none of above
parts is faulty.
Washer malfunctions Washer hose or nozzle clogged Clean or repair clogged hose or nozzle.
Circuit fuse blown Replace fuse and check for short circuit.
Washer motor faulty Check washer motor referring to “Washer
Pump Inspection”.
Combination switch (washer switch)
faulty Check washer switch referring to “Rear Wiper
and Washer Switch Inspection”.
Wiring or grounding faulty Repair circuit.

Downloaded from www.Manualslib.com manuals search engine Glass / Windows / Mirrors: 9E-2
• Eyeleteer
• Piano string
• Windshield knife
• Brush for primer application (2 pcs)
•Knife
• Rubber sucker grip
• Sealant gun (for filling adhesive)
• Putty spatula (for correcting adhered parts)
Diagnostic Information and Procedures
Rear End door Window Defogger Symptom DiagnosisS7RS0B9504001
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, re fer 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.

Power Window Control System Symptom DiagnosisS7RS0B9504002
Condition Possible cause Correction / Reference Item
Rear end door window
defogger does not
operate Circuit fuse blown
Replace fuse and check for short circuit.
Rear end door window defogger switch
faulty Check rear end door window defogger switch
referring to “Rear End Door Window Defogger
Switch Inspection”.
Rear end door window defogger relay
faulty Check rear end door window defogger relay
referring to “Rear End Door Window Defogger
Relay Inspection”.
Defogger wire faulty Check defogger wire referring to “Rear End
Door Window Defogger Wire Inspection”.
Wiring or grounding faulty Repair circuit.
BCM faulty Replace after making sure that none of above
parts is faulty.
ConditionPossible cause Correction / Reference Item
All power windows do not
operate Circuit fuse blown
Replace fuse and check for short circuit.
Power window main switch faulty Check power window main switch referring to
“Power Window Main Switch Inspection”.
Ignition switch faulty Check ignition switch referring to “Ignition
Switch Inspection in Section 9C”.
Wiring or grounding faulty Repair circuit.
Only one power window
does not operate Power window main switch faulty
Check power window main switch referring to
“Power Window Main Switch Inspection”.
Power window sub switch faulty Check power window sub switch referring to
“Power Window Sub Switch Inspection”.
Wiring and/or coupler faulty Check wiring and/or coupler.
Power window regulator faulty Check window regulator.
Power window motor faulty Check power window motor.
Wiring or grounding faulty Repair circuit.

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Power Door Mirror Control System Symptom DiagnosisS7RS0B9504003
Door Mirror Heater Symptom Diagnosis (If Equipped)S7RS0B9504004
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, re fer 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.

Condition Possible cause Correction / Reference Item
All power mirrors do not
operate Circuit fuse blown
Replace fuse and check for short circuit.
Power door mirror switch faulty Check power door mirror switch referring to
“Power Door Mirror Switch Inspection”.
Wiring or grounding faulty Repair circuit.
One power mirror does
not operate Power door mirror switch faulty
Check power door mirror switch referring to
“Power Door Mirror Switch Inspection”.
Power door mirror actuator faulty Check actuator refraining to “Power Door
Mirror Actuator Inspection”.
Wiring or grounding faulty Repair circuit.
ConditionPossible cause Correction / Reference Item
All door mirror heaters
does not operate Circuit fuse blown
Replace fuse and check for short circuit.
Rear end door window defogger switch
faulty Check rear end door window defogger switch
referring to “Rear End Door Window Defogger
Switch Inspection”.
Rear end door window defogger relay
faulty Check rear end door window defogger relay
referring to “Rear End Door Window Defogger
Relay Inspection”.
Wiring or grounding faulty Repair circuit.
BCM faulty Replace after making sure that none of above
parts is faulty.
Only one door mirror
heater does not operate Door mirror heater faulty
Check door mirror heater referring to “Door
Mirror Heater Inspection (If Equipped)”.
Wiring or grounding faulty Repair circuit.

Downloaded from www.Manualslib.com manuals search engine Security and Locks: 9F-3
Diagnostic Information and Procedures
Power Door Lock System Symptom DiagnosisS7RS0B9604001
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, re fer 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.

Power Door Lock System Operation InspectionS7RS0B9604002
1) Check the following operation:
a) Turn the driver side key cylinder is turned LOCK once, check all doors lock.
b) Turn the driver side door key cylinder is turned UNLOC K position with door key twice, check all doors unlock.
If malfunction is found, go to “Power Door Lock System Symptom Diagnosis”.
Condition Possible cause Correction / Reference Item
All door can not be locked
/ unlocked by all of
switches Circuit fuse blown
Replace fuse and check for short circuit.
Wiring or grounding faulty Repair circuit.
BCM faulty Replace after making sure that none of above
parts is faulty.
All door can not be locked
/ unlocked by only power
door lock switch Circuit fuse blown
Replace fuse and check for short circuit.
Power door lock switch faulty Check power door lock switch referring to
“Power Door Lock Switch Inspection”.
Wiring harness connected to power door
lock switch faulty Repair.
Wiring or grounding faulty Repair circuit.
BCM faulty Replace after making sure that none of above
parts is faulty.
All door can not be locked
/ unlocked by only key
cylinder switch Circuit fuse blown
Replace fuse and check for short circuit.
Key cylinder switch faulty Check key cylinder switch referring to “Door
Key Cylinder Switch Inspection”.
Wiring or grounding faulty Repair circuit.
BCM faulty Replace after making sure that none of above
parts is faulty.
Only one door can not be
locked / unlocked Power door lock actuator faulty
Check actuator referring to “Power Door Lock
Actuator Inspection”.
Wiring harness connected to applicable
door lock actuator faulty Repair.
BCM faulty Replace after making sure that none of above
parts is faulty.