2008 SUZUKI SWIFT Combination meter connector

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Page 1436 of 1496

SUZUKI SWIFT 2008 2.G Service Workshop Manual Downloaded from www.Manualslib.com manuals search engine 10B-33 Body Electrical Control System:
BCM connector “G37”E46-11 Oil pressure switch
*3 – 14 V Refer to “Reference waveform No. 5: ”

Downloaded from www.Manualslib.com manuals search engine 10B-33 Body Electrical Control System:
BCM connector “G37”E46-11 Oil pressure switch
*3 – 14 V Refer to “Reference waveform No. 5: ”
0 V Ignition switch is at ON position and engine is at stop
E46-12 — — —
E46-13 — — —
E46-14 — — —
Terminal Circuit Normal voltage Condition
Terminal
CircuitNormal voltage Condition
G37-1 CAN communication line (low)
for DLC *1.6 – 2.5 V Refer to “Reference waveform No. 6: ”
G37-2 CAN communication line (low)
for combination meter *1.6 – 2.5 V Refer to “Reference waveform No. 7: ”
G37-3 CAN communication line
(high) for DLC *2.5 – 3.6 V Refer to “Reference waveform No. 6: ”
G37-4 CAN communication line
(high) for combination meter *2.5 – 3.6 V Refer to “Reference waveform No. 7: ”
G37-5 Serial communication line of
data link connector 8 – 12 V Ignition switch is at ON position
G37-6 — — —
G37-7 — — —
G37-8 Theft deterrent light 10 – 14 V Theft deterrent light is not lit up
0 V Theft deterrent light is lit up
G37-9 — — —
G37-10 — — —
G37-11 Serial communication line for
information display
(if equipped) *0 – 1 V
↑↓
10 – 14 V Refer to “Reference
waveform No. 8: ”
G37-12 Ground for keyless entry
receiver (if equipped) 0 V
—
G37-13 Power supply for keyless entry
receiver (if equipped) 4 – 6 V Ignition switch is at all positions
G37-14 Signal for keyless entry
receiver (if equipped) *0 – 1 V
↑↓
4 – 6 V Refer to “Reference
waveform No. 9: ”
G37-15 — — —
G37-16 Key reminder switch 10 – 14 V Ignition key is inserted to ignition key cylinder
0 V Ignition key is pulled out from ignition key cylinder
G37-17 Rear end door window
defogger switch 0 V
Ignition switch is at ON
position and rear end door
window defogger switch is pushed
10 – 14 V Ignition switch is at ON
position and rear end door
window defogger switch is not pushed
G37-18 A/C switch *3 – 14 V Refer to “Reference waveform No. 10: ”
0 V Ignition switch is at ON pos
ition, blower speed selector
is at any position other than OFF position and A/C
switch is at ON position
G37-19 — — —
G37-20 — — —
G37-21 Rear wiper INT switch *0 – 1 V
↑↓
10 – 14 V Refer to “Reference
waveform No. 11: ”
0 V Ignition switch is at ON pos
ition and rear wiper switch
is at INT position
G37-22 Rear wiper low switch *0 – 1 V
↑↓
10 – 14 V Refer to “Reference
waveform No. 12: ”
0 V Ignition switch is at ON pos
ition and rear wiper switch
is at LOW position

Page 1444 of 1496

SUZUKI SWIFT 2008 2.G Service Workshop Manual Downloaded from www.Manualslib.com manuals search engine 10C-1 Immobilizer Control System:
Control Systems
Immobilizer Control System
Precautions
Precautions in Diagnosing TroublesS7RS0BA300001
• B

Downloaded from www.Manualslib.com manuals search engine 10C-1 Immobilizer Control System:
Control Systems
Immobilizer Control System
Precautions
Precautions in Diagnosing TroublesS7RS0BA300001
• Before confirming the diagnostic trouble code (DTC),
do not disconnect connector from ECM, battery cable
from battery, ground wire harness, or main fuse. Such
disconnection will erase DTC stored in ECM.
• DTC stored in ECM memory can be checked as well as cleared by using SUZUKI scan tool. Before using
SUZUKI scan tool, read its operator’s manual
carefully to know how to use it and what functions are
available.
• Be sure to read “Precautions for Electrical Circuit Service in Section 00” before inspection.
• Communication of ECM, BCM, keyless start control module (if equipped), ABS / ESP ® control module,
steering angle sensor (ESP ® model), combination
meter and TCM (A/T model) is established by CAN
(Controller Area Network). Therefore, handle CAN
communication lines with care referring to “Precaution
for CAN Communication System in Section 00”. For
CAN communication system, refer to description on
“CAN Communication System Description in Section
1A”.
Precaution in Replacing ECMS7RS0BA300002
• If ECM is replaced with new or used one without immobilizer control function , the engine will not be
started. In case of the above, check if the newly
installed ECM has immobilizer control function.
• After ECM is replaced with new one or used one, the transponder code in the transponder built in the
ignition key has to be registered with ECM. Or, the
engine cannot be started up. For the registration
procedure, refer to “Procedure after ECM
Replacement”.
Precautions in Handling Immobilizer Control
System
S7RS0BA300003
• Do not turn ON ignition sw itch with ignition key in
contact with another one or quite close to another
one. Or, the immobilizer co ntrol system may detect
some abnormal condition and prevent the engine from
starting.
• Do not turn ON ignition switch by using ignition key with any type of metal (1) wrapped its grip or in
contact with it. Or, the i mmobilizer control system may
detect some abnormal condition and prevent the
engine from starting.
I3RH0AA30001-01
1
I3RH0AA30002-01

Page 1447 of 1496

SUZUKI SWIFT 2008 2.G Service Workshop Manual Downloaded from www.Manualslib.com manuals search engine Immobilizer Control System: 10C-4
Schematic and Routing Diagram
Immobilizer Control System Wiring Circuit DiagramS7RS0BA302001
NOTE
For more d

Page 1451 of 1496

SUZUKI SWIFT 2008 2.G Service Workshop Manual Downloaded from www.Manualslib.com manuals search engine Immobilizer Control System: 10C-8
Immobilizer Indicator Lamp Remains ON after Engine StartsS7RS0BA304007
Wiring Diagram
Refer to “Immobilize

Downloaded from www.Manualslib.com manuals search engine Immobilizer Control System: 10C-8
Immobilizer Indicator Lamp Remains ON after Engine StartsS7RS0BA304007
Wiring Diagram
Refer to “Immobilizer Control S ystem Wiring Circuit Diagram”.
Circuit Description
When the ignition switch is turned ON, ECM read the code by the coil antenna from ignition key. Then if the code in
transponder in the key match with the one registered with ECM, transmits indication ON signal of immobilizer indicator
lamp to combination meter in order to turn immobilizer indicator lamp on. And then, combination meter turns
immobilizer indicator lamp on. When th e engine starts to run and no malfunction is detected in the system, ECM
transmits immobilizer indicator lamp indication O FF signal to combination meter in order to turn immobilizer indicator
lamp off. And then, comb ination meter turns immobilizer indicator lamp off, but if a malfunction was or is detected,
immobilizer indicator lamp is flashes ON and OF F, when ignition switch turn to ON position.
Troubleshooting 4
Fuse check
1) Turn ignition switch to OFF position.
2) Check for fuse blown at combination meter circuit fuse in
junction block assembly.
Is fuse in good condition? Go to Step 5. Replace fuse and check
for short to power or
ground circuit.
5 CAN communication circuit check
1) Disconnect connectors of all control modules
communicating by means of CAN.
2) Check CAN communication circuit between control modules for open, short and high resistance.
Is each CAN communication circuit in good condition? Go to Step 6. Repair circuit.
6 Combination meter power and ground circuit check
1) Remove combination meter referring to “Combination
Meter Removal and Installation in Section 9C”.
2) Check for proper connection to combination meter connector terminals.
3) If OK, then turn ignition switch to ON position, Check terminal voltage of combination meter between power
supply and ground terminal. Refer to “Combination
Meter Circuit Diagram in Section 9C”.
Is it 10 – 14 V? Substitute a known-
good combination meter
and recheck. If
immobilizer indicator
lamp still remains OFF,
substitute a known good
ECM and recheck.
Repair power supply
and/or ground circuit.
Step Action Yes No
Step
Action YesNo
1 DTC check of ECM
1) Start engine and recheck DTC of ECM while engine
running.
Is DTC P1674, P1675, P1678 and/or P1685 detected? Go to applicable DTC
diag. flow.
Go to Step 2.
2 CAN communication circuit check
1) Disconnect connectors from ECM, BCM, ABS control
module and combination meter.
2) Check CAN communication circuit for open, short and high resistance.
• Between ECM and ABS control module
• Between BCM and ABS control module
• Between BCM and combination meter
Is each CAN communication circuit in good condition? Substitute a known-
good combination meter
and recheck. If
immobilizer indicator
lamp still remains ON,
substitute a known-
good ECM and recheck.
Repair circuit.

Page 1469 of 1496

SUZUKI SWIFT 2008 2.G Service Workshop Manual Downloaded from www.Manualslib.com manuals search engine Keyless Start System: 10E-7
Schematic and Routing Diagram
Keyless Start System Electric Wiring Circuit DiagramS7RS0BA502001
BLK/ORNG42-9
G42-1

Page 1480 of 1496

SUZUKI SWIFT 2008 2.G Service Workshop Manual Downloaded from www.Manualslib.com manuals search engine 10E-18 Keyless Start System:
Reference waveform No. 6
Driver side and passenger side door lock switch signals
(Signal (1) indicating door lock

Page 1481 of 1496

SUZUKI SWIFT 2008 2.G Service Workshop Manual Downloaded from www.Manualslib.com manuals search engine Keyless Start System: 10E-19
TroubleshootingStep Action Yes No 1 Combination meter power and ground circuit check
1) Turn ignition switch to O

Page 1482 of 1496

SUZUKI SWIFT 2008 2.G Service Workshop Manual Downloaded from www.Manualslib.com manuals search engine 10E-20 Keyless Start System:
Key Indicator Lamp Circuit Check (Key indicator lamp doesn’t light when ignition knob switch is
pushed.)
S7RS0

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