2008 SUZUKI SWIFT Transmi

Downloaded from www.Manualslib.com manuals search engine 10B-3 Body Electrical Control System:
Theft Deterrent LightS7RS0BA201003
The information display or clock (1) of this vehicle includes a theft deterrent light (2) for the theft preventive purpose.
The BCM makes the theft deterrent light flash at certain interval s after the ignition switch is turned off until it is turned
on again. Also, to check DTCs stored in BCM without usin g a SUZUKI scan tool when diagnosing troubles, it is
possible to identify them by flashing patterns of the theft deterrent light.
Security Alarm Description (If Equipped)S7RS0BA201004
Operation
The security alarm system provides a warning of an abnormal condition to those who are around. Its operation is as
follows. While the system is in the stand- by mode (when 20 seconds or more elapsed after the door is locked using a
keyless entry transmitter or door request switch), BCM monitors door lock status, door switch status and battery power
supply voltage. When it detects an abnormal condition (door is unlocked by some way other than using keyless entry
transmitter or door request switch and opened or cut off BCM power supply voltage temporarily), it activates the
warning buzzer (located in BCM), theft deterr ent light, hazard warning relay and horn relay.
The security alarm system has 2 selectable modes.
• A mode: No operation
• B mode: Theft deterrent light blinks, hazard warning lights blink, warning buzzer (located in BCM) sounds and horn
sounds
When B mode is selected and the door is locked using keyl ess entry transmitter or door request switch, the theft
deterrent light (1) flashes at 0.1 second interval for 20 seconds and the se curity alarm system is set to the stand-by
mode (2). Once it is se t to the stand-by mode, the theft deterrent light blinks at 2 second intervals.
When the system is set to stand-by mode and the door is unlocked by some way other than using keyless entry
transmitter or door request switch and opened or cut off BCM power supply voltage temporarily, the alarm devices
operate according to the selected mode as described above.
The alarm stops under either of the following conditions.
• Ignition switch is turned ON
• A certain time has elapsed since the alarm started
For selection of the mode of the security alarm system , refer to “Security Alarm Mode Selection Procedure (If
Equipped)”.
1 2I4RS0AA20031-01
B A1T3
T1
T2 2
C
I5RS0DA20003-01
A: Indicator lamp turned ON
T1: 0.1 seconds
B: Indicator lamp turned OFF T2: 20 seconds
C: When door is locked using keyless entry tr ansmitter or door request switch T3: 2 seconds

Downloaded from www.Manualslib.com manuals search engine Body Electrical Control System: 10B-4
Input / Output Table
Schematic and Routing Diagram
Body Electrical Control System Wiring Circuit DiagramS7RS0BA202001
NOTE
This wiring diagram shows circuits related to only BCM, not the entire circuits of BCM and junction
block. Refer to “Power Supply Diagram in Section 9A” for wiring circuits other than the figure below.

Input Output
Keyless entry transmitter
Door switch status
Door lock status BCMHorn relay
Theft deterrent light
(in information display)
Warning buzzer
(located in BCM)
Hazard warning relay
Door request switch signal
Ignition switch
I5RS0CA20003-01

Downloaded from www.Manualslib.com manuals search engine Body Electrical Control System: 10B-10
Body Electrical Control System CheckS7RS0BA204002
Interior light• Each door switch
• Key reminder switch • Interior light
Warning buzzer • Key reminder switch
• Tail light switch
• Driver side door switch
• TCM (reverse signal) (if equipped)
• ECM (vehicle speed signal)
• Keyless start control module (if equipped) • Warning buzzer (located in BCM)
Rear end door window
defogger • Rear end door window defogger switch
• Generator • Rear end door window defogger
relay
Rear end door opener • Manual door lock switch (unlock signal)
• Key cylinder switch (unlock signal)
• Keyless entry transmitter (unlock signal) (if
equipped)
• Rear end door opener switch • Rear end door opener relay
Theft deterrent light • Key reminder switch • Theft deterrent light (located in
information display or clock)
Control Input Output
Step
Action YesNo
1 ) Customer complaint analysis
1) Perform customer complaint analysis.
Was customer complaint analysis performed? Go to Step 2.
Perform customer
complaint analysis.
2 ) Problem symptom confirmation
1) Perform problem symptom confirmation.
Does trouble recur? Go to Step 3.
Go to Step 7.
3 ) DTC check
1) Check DTC.
Is it malfunction code? Go to Step 4.
Go to Step 5.
4 ) Troubleshooting for DTC
1) Check and repair according to DTC diag. flow.
Are check and repair completed? Go to Step 7.
Check and repair
malfunction part(s).
5 ) Body electrical control system symptom diagnosis
1) Perform check and repair referring to “Symptom Diagnosis” of system having a trouble.
Is there faulty condition? Repair or replace
malfunction part(s).
Go to Step 6.
6 ) Check for intermittent problem
1) Check for interm ittent problem.
Is there faulty condition? Repair or replace
malfunction part(s).
Go to Step 7.
7 ) Final confirmation test
1) Clear DTC referring to “DTC Clearance”.
2) Check DTC referring to “DTC Check”.
Is there any DTC? Go to Step 4.
End.

Downloaded from www.Manualslib.com manuals search engine 10B-13 Body Electrical Control System:
Scan Tool Data Definitions
Vehicle Speed (km/h, mph): It is computed based on pulse signals from vehicle speed sensor on transmission.
Outside air Temp ( °C, °F): It is detected by outside air temperature sensor.
Battery Voltage (V): This parameter indicates battery po sitive voltage inputted to BCM.
Coolant Temp (Engine coolant temperature) ( °C, °F): It is detected by engine coolant temperature sensor.
Engine Speed (RPM): It is computed by reference pulse signals from CMP sensor.
Fuel Consumption (km/l): This parameter indicates the fuel consumption computed by ECM.
Key Reminder Sw (Key reminder switch) (Pulled / Key in): This parameter indicates the state of the key reminder
switch.
Rear Wiper Sw (Rear wiper switch) (ON / INT / OFF): This parameter indicates the state of the rear wiper switch.
Door key Sw (Door key cylinder switch) (Lock / Neutral / Unlock): This parameter indicates the state of the door
key cylinder switch.
Door lock Sw (Manual door lock switch) (Lock / Neutral / Unlock): This parameter indicates the state of the
manual door lock switch.
Driv Door Sw (Driver side d oor switch) (Open / Close): This parameter indicates the state of the driver side door
switch.
Pass Door Sw (Other than driver side door switch) (Open / Close): This parameter indicates the state of the door
switches other than driver side door switch.
Brake Fluid Level (Low / Normal): Low: Brake fluid level is lower than specified level.
Normal: Brake fluid level is higher than MIN level.
Parking Brake Sw (Parking brake switch) (ON / OFF): ON: Parking brake lever is pulled up.
OFF: Parking brake lever is released.
Rear Defogger Sw (Rear end door window defogger switch) (ON / OFF): This parameter indicates the state of
the rear end door window defogger switch.
Tail Light Sw (Lighting switch) (ON / OFF): This parameter indicates the state of the lighting switch.
Driv Seatbelt Sw (Driver seat belt switch) (Fasten / Unfasten): This parameter indicates the state of the driver
side seat belt buckle switch.
Rear end Door Opener (Rear end door opener switch) (ON / OFF): This parameter indicates the state of the rear
end door opener switch.
“3” position Sw (ON/OFF): This parameter indicates the state of the “3 ” position switch included in A/T manual
selector assembly.
Charge lamp (ON / OFF): This parameter indicates the state of the charge system monitor switch.
Oil pressure switch (ON / OFF): This parameter indicates the state of the oil pressure switch.
A/C Switch (ON / OFF): This parameter indicates the state of the air conditioning switch.
Diagnosis Using Output Test Function of SUZUKI Scan Tool
SUZUKI scan tool has the output test function which can force operation of following actuators and relays of the
system controlled by BCM. When a malf unction is found in the system controlled by BCM, execute the output test
which enables easy judgment whether the malfunction is on the input side or output side of BCM. For detailed
information on operation of SUZUKI scan tool, refer to “SUZUKI Scan Tool Operator’s Manual”.
Output Teat Item Controlled Parts
Hazard Warning Light Turn signal and hazard warning relay
Interior (Dome) Light Interior (Dome) light (wh en interior light switch is at DOOR position)
Door Each door lock actuator
Rear end door open Rear end door opener relay
Warning buzzer Warning buzzer (in BCM)
Rear wiper Rear wiper relay
Alarm indicator Theft deterrent light (in information display or clock)
Rear defogger Rear end door window defogger relay

Downloaded from www.Manualslib.com manuals search engine Body Electrical Control System: 10B-14
DTC TableS7RS0BA204004
DTC CheckS7RS0BA204005
Using SUZUKI Scan Tool1) Prepare SUZUKI scan tool.
2) With ignition switch turned OFF, connect it to data link connector (DLC) located on underside of
instrument panel of driver’s side.
Special tool
(A): SUZUKI scan tool 3) Turn ignition switch ON.
4) Read DTC according to
instructions displayed on
SUZUKI scan tool and print it or write it down.
Refer to SUZUKI scan tool operator’s manual for
further details.
If communication between SUZUKI scan tool and
BCM is not possible, check if SUZUKI scan tool is
communicable by connecting it to BCM in another
vehicle. If communication is possible in this case,
SUZUKI scan tool is in good condition. Then check
data link connector and serial data line (circuit) in the
vehicle with which communica tion was not possible.
5) After completing the check, turn ignition switch off and disconnect SUZUKI scan tool from data link
connector.
DTC
(displayed
on SUZUKI scan tool) DTC (indicated
by theft
deterrent light) DTC (displayed on
odometer in
combination meter) Detected item Detecting condition
NO DTC 0000 0000 — No DTC detected
) B1133 1133 b1133 Battery voltage too high Battery voltage too high
) B1141 1141 b1141 Outside air temperature
(ambient temperature) sensor
circuit openSensor output voltage too high
) B1142 1142 b1142 Outside air temperature
(ambient temperature) sensor
circuit short to groundSensor output voltage too low
) B1150 1150 b1150 Air bag communication circuit
malfunctionAir bag communication circuit
open or short to ground
) B1157 1157 b1157 Air bag deployment signal input Air bag deployment signal
inputted
) B1170 1170 b1170 EEPROM access error Memory error
)
U0155 0155 U0155 Lost communication with
instrument panel cluster (IPC)
control moduleReceiving error of BCM from
combination mete
r for specified
time continuously
) U1073 1073 U1073 Control module communication
bus offTransmitting and receiving error
of BCM for specified time
continuously
) U1100 1100 U1100 Lost communication with ECM Receiving error of BCM from
ECM for specified time
continuously
) U1101 1101 U1101 Lost communication with TCM Receiving error of BCM from
TCM for specified time
continuously
) U1144 1144 U1144 Lost communication with
keyless start control moduleReceiving error of BCM from
keyless start control module for
specified time continuously
(A)
I4RS0BA20005-01

Downloaded from www.Manualslib.com manuals search engine Body Electrical Control System: 10B-24
DTC U1073 (No. 1073): Control Module Communication Bus OffS7RS0BA204014
Wiring Diagram
Refer to “DTC U0155 (No. 0155): Lost Communication with Instrument Panel Cluster (IPC) Control Module”.
DTC Detecting Condition and Trouble Area
DTC Confirmation Procedure 1) Connect scan tool to DLC with ignition switch turned OFF.
2) Turn ON ignition switch and clear DTC by using scan tool.
3) Start engine and run it for 1 min. or more.
4) Check DTC.
DTC Troubleshooting DTC detecting condition Trouble area
Transmission error that is inconsistent between transmission data and
transmission monitor (CAN bus monitor) data is detected more than 7
times continuously.
(1 driving detection logic) • CAN communication circuit
• Combination meter
• BCM (included in junction block
assembly)
• TCM (A/T model)
• ABS/ESP ® control module
• Keyless start control module (if equipped)
•ECM
• Steering angle sensor (if equipped)
Step Action YesNo
1 Control module connector check
1) Check connection of connectors of all control modules
communicating by means of CAN.
2) Recheck DTC.
Is DTC U1073 detected? Go to Step 2.
Intermittent trouble.
Check for intermittent
referring to “Intermittent
and Poor Connection
Inspection in Section
00”.
2 CAN communication circuit check
1) Turn ignition switch to OFF position.
2) Disconnect connectors of all control modules
communicating by means of CAN.
3) Check CAN communication circuit between control modules for open, short and high resistance.
Is each CAN communication circuit in good condition? Go to Step 3.
Repair circuit.

Downloaded from www.Manualslib.com manuals search engine Body Electrical Control System: 10B-34
Junction block connector “E40”
Junction block connector “E41”
Junction block connector “G32”
Junction block connector “G33”
Junction block connector “G34”
Junction block connector “K01”
Junction block connector “L04”
Junction block connector “L05”Terminal Circuit Normal voltage Condition
E40-2 Backup power source 10 – 14 V Igni tion switch is at all positions
TerminalCircuitNormal voltage Condition
E41-3 Horn 10 – 14 V Horn switch is at ON position
0 V Horn switch is at OFF position
Terminal CircuitNormal voltage Condition
G32-2 Power source (IG) 10 – 14 V Ignition switch is at ON position
0 V Ignition switch is at any position other than ON position
G32-5 Power source (ACC) 10 – 14 V Ignition switch is at ACC or ON position
0 V Ignition switch is at any position other than ACC or ON
position
Terminal
CircuitNormal voltage Condition
G33-3 Ground for BCM 0 V Ignition switch is at all positions
G33-7 Rear end door window
defogger indicator light 10 – 14 V
Engine is running and rear end door window defogger
indicator light is lit up
0 V Engine is running and rear end door window defogger
indicator light is not lit up
Terminal
CircuitNormal voltage Condition
G34-3 Horn switch 10 – 14 V Horn switch is not pushed
0 V Horn switch is pushed
G34-7 Lighting switch 10 – 14 VEngine is running (equipped with DRL) or lighting
switch is at any position other than OFF position
0 V Lighting switch is at OFF position
G34-9 Ground for BCM 0 V Ignition switch is at all positions
G34-11 Hazard warning switch 0 VHazard warning switch is at
ON position or lock or
unlock button of key less entry transmitter (answer
back control) is pushed
10 – 14 V Hazard warning switch is at OFF position
Terminal CircuitNormal voltage Condition
K01-5 Interior light 10 – 14 V
Interior light switch is at
DOOR position and interior
light is not lit up
0 V Interior light switch is at
DOOR position and interior
light is lit up
Terminal CircuitNormal voltage Condition
L04-2 Air bag communication line *0 – 1 V
↑↓
4 – 6 V Refer to “Reference
waveform No. 13: ”
L04-3 Serial communication line of
data link connector for SDM 8 – 12 V Ignition switch is at ON position
Terminal
CircuitNormal voltage Condition
L05-4 Ground for BCM 0 V Ignition switch is at all positions
L05-5 Power supply for rear wiper
motor 10 – 14 V Ignition switch is at ON position

Downloaded from www.Manualslib.com manuals search engine 10B-37 Body Electrical Control System:
Reference waveform No. 7
BCM – combination meter CAN communication signal
Reference waveform No. 8
Information display serial communication signal (1)Reference waveform No. 9
Keyless entry receiver signal (1)
Reference waveform No. 10
A/C switch signal (1)
Measurement terminal
CH2: “G37-2” to “G33-3”
CH3: “G37-4” to “G33-3”
Oscilloscope setting CH2: 1 V / DIV
CH3: 1 V / DIV
TIME: 40
µs / DIV
Measurement
condition Ignition switch is at ON position
1. CAN communication line signal (High)
2. CAN communication line signal (Low)
Measurement terminal CH2: “G37-11” to “G33-3”
Oscilloscope setting
CH2: 5 V / DIV
TIME: 2 ms / DIV
Measurement
condition Ignition switch is at ON position
I4RS0AA20020-02
I4RS0AA20021-02
Measurement terminal CH2: “G37-14” to “G33-3”
Oscilloscope settingCH2: 2 V / DIV
TIME: 200 ms / DIV
Measurement
condition Lock or unlock button of
keyless entry transmitter is
pushed
Measurement terminal CH2: “G37-18” to “G33-3”
Oscilloscope setting CH2: 5 V / DIV
TIME: 10 ms / DIV
Measurement
condition Ignition switch is at ON position,
A/C switch or blower speed
selector is at OFF position
I4RS0AA20022-02
I4RS0AA20023-02