Combination wiring SUZUKI SWIFT 2008 2.G Service Repair Manual
Page 1469 of 1496
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
G42-15
G42-14
G42-37G42-33
G42-16
G42-20G42-29G42-30
G42-36
G42-32G42-10
G42-34
G42-11BLU/WHT
WHT/RED
WHT/RED
WHT/RED
PNK/BLKGRY/BLU
BLU/RED
YEL
PPL
RED/BLK
5V5V
5V5V
5V5V
5V
12V
12V
G42-2G42-1BLUORNWHTREDWHTREDG42-18G42-19G28-9G28-7
BLU/YEL
ORN
G42-24G42-23BLK/YELWHT/RED
G42-7GRN/WHTLT  G R NG42-8
G42-5G42-6GRNWHT/BLK
G42-4G42-3WHT/GRNRED/BLU
BLK/YELBRN/YELBRNG22-3
G22-1
G22-2G22-5
G22-4
G22-6
G22-7G22-8
WHT/RED
WHT/RED
G37-4
REDWHTREDWHT
G28-10G28-8WHTRED
RED
WHT
G37-2
E46-2
E46-1E03-6
E03-12
G28-32
6
7
8
9
10
11
12
13
14
15 1
18
20
1617
2
4 5 3
1234567891011
141516
36 34 33 32 30 29 24 23
37
181920
[A]
REDWHTE23-18
E23-3
19
REDWHTE03-8
E03-10
I6RS0CA50001-01
[A]: Keyless start control module connector (viewed from 
harness side) 7. Passenger side door antenna 14. Driver side door lock switch
1. Keyless start control module 8. Rear end door antenna 15. Passenger side door lock switch
2. Steering lock unit 9. Center antenna 16. Combination meter
3. Steering lock solenoid 10. Luggage room antenna 17. Key indicator lamp
4. Ignition knob switch 11. Driver side door request switch 18. BCM
5. Key reminder switch 12. Passenger side door request switch 19. ECM
6. Driver side door antenna 13. Rear end door request switch 20. ABS control module  
Page 1475 of 1496
Downloaded from www.Manualslib.com manuals search engine Keyless Start System:  10E-13
Keyless Engine Start Function
NOTE
Before performing symptom diagnosis procedure for keyless engine start system, check that engine 
starts by using ignition key. If it cannot be started by using ignition key, go to “Engine Symptom 
Diagnosis in Section 1A”.
 
Keyless Start System Operation InspectionS7RS0BA504011
Keyless engine start operation
1) Sit in driver seat with re mote controller carried with 
you.
2) Check that all doors are closed and ignition key is  not inserted in ignition key cylinder.
3) While pushing ignition knob switch (1) of steering  lock unit, check if ignition knob switch can be turned 
from its lock position.
If key indicator lamp (2)  in combination meter lights 
in blue and ignition knob switch can be turned from 
its lock position in this check, keyless engine start 
operation is in good condition.
If key indicator lamp in  combination meter lights in 
red and ignition knob switch cannot be turned from 
its lock position in this check, go to “Keyless Start 
System Check”.
NOTE
Pushing ignition knob switch for 5 seconds 
or longer causes function to protect steering 
lock releasing solenoid against heat to work. 
Then steering lock unit stops energizing 
solenoid, preventing ignition knob switch 
from turning. At the same time, key indicator 
lamp in combination mete r turns off. In such 
case, take your hand off from ignition knob 
switch once and operate it again.
 
Condition Possible cause Correction / Reference Item
Engine can not be started 
by turning Ignition knob 
switch Circuit fuse(s) blown
Replace fuse(s) and check for short circuit.
Remote controller battery dead Replace battery.
Remote controller faulty Check remote controller for operation referring 
to “Remote Controller Inspection”.
Steering lock unit faulty Check steering lock unit for operation referring 
to “Steering Lock Unit Inspection”.
Wiring or grounding faulty Repair circuit.
Antennas or keyless start control 
module faulty Check input and output signals of keyless start 
control module referring to “Inspection of 
Keyless Start Control Mo
dule and Its Circuits”.
ECM faulty Check input and output signal of ECM referring 
to “Inspection of ECM and Its Circuits in 
Section 1A”.
1
2
I4RS0BA50012-01  
Page 1480 of 1496
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 switch status which 
keyless start control module receives from BCM)
No DTC Detection After Performing DTC CheckS7RS0BA504014
Wiring Diagram
Description
The keyless start control module detect s DTC by using signals from the key reminder and driver side door request 
switches. The keyless start control module makes the key indicator lamp in the combination meter flash on and off by 
using CAN communication. Measurement 
terminal
Driver side door lock switch
• CH1: “G42-33” to “G42-9”
Passenger side door lock switch
• CH1: “G42-37” to “G42-9”
Oscilloscope setting CH1: 1 V/DIV
TIME: 4 ms/DIV
Measurement 
condition Driver side door lock switch
• Driver side door is at lock 
position
• Passenger side door is at  unlock position
Passenger side door lock switch
• Driver side door is at unlock  position
• Passenger side door is at lock  position
I4RS0BA50020-02
BLK/ORNG42-9
G42-15
G42-14
G42-16
G42-20G42-29G42-30
G42-10
G42-34
G42-11BLU/WHT
WHT/RED
WHT/RED
WHT/RED
PPL
RED/BLK
5V5V
5V5V
5V
12V
12VWHTREDWHTREDG42-18G42-19G28-9G28-7
BLU/YEL
ORN
BLK/YELBRN/YELBRNG22-3
G22-1
G22-2G22-5
G22-4
G22-6
G22-7G22-8
WHT/RED
WHT/RED
G28-32
6
7
8 1
2
4 5 3
1234567891011
141516
36 34 33 32 31 30 29 24 23
37
181920
[A]
I4RS0BA50035-01
[A]: Keyless start control module connector (viewed from harne
ss side) 3. Steering lock solenoid 6. Driver side door request switch
1. Keyless start control module 4. Ignition knob switch 7. Combination meter
2. Steering lock unit 5. Key reminder switch 8. Key indicator lamp  
Page 1482 of 1496
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.)
S7RS0BA504015
Wiring Diagram
Description
When the ignition knob switch is pushed, the key indicator lamp lights up in blue if you carry the remote controller 
registered in the keyless start control module and it lights in red if you carry the remote controller which has not been 
registered in the keyless start control module or if you carry no remote controller.
G42-14
G42-20G42-29G42-30
G42-34
WHT/RED
WHT/RED
5V5V
5V5V
BLK/ORNG42-9
G42-15
G42-10
G42-11BLU/WHT
WHT/RED
WHT/RED
RED/BLK
5V
12V
WHTREDWHTREDG42-18G42-19G28-9G28-7
G28-32
BLU/YEL
ORN
BLK/YELBRN/YELBRNG22-3
G22-1
G22-2G22-5
G22-4
G22-6
G22-7G22-8
WHT/RED
WHT/RED
1234567891011
141516
36 34 33 32 31 30 29 24 23
37
181920
1
2
4 5
7 6
[A] 3
I5RS0CA50005-01
[A]: Keyless start control module connector (viewed from harness side)
4. Steering lock unit
1. Keyless start control module 5. Steering lock solenoid
2. Combination meter 6. Key reminder switch
3. Key indicator lamp 7. Ignition knob switch  
Page 1487 of 1496
Downloaded from www.Manualslib.com manuals search engine Keyless Start System:  10E-25
DTC No. 31: Lost Communication with BCMS7RS0BA504020
Wiring Diagram
DTC Detecting condition and trouble area
DTC Confirmation Procedure1) Clear DTC referring  to “DTC Clearance”.
2) Turn ignition key knob by pushing ignition key knob.
3) Check DTC referring to “DTC Check”.
REDWHTE03-12E03-6
REDWHTE03-10E03-8
REDWHTREDWHTG42-19G42-18 3REDWHTREDWHT
REDWHTREDWHT
REDWHTE46-1
G37-4
G42-19G42-18
G28-8G28-10G37-2
C34-7
E46-2
C34-17
1
2
4
53
21
[A]
E23
G42 C37
34
1819
5671011
17
20
47 46
495051
2122
52 16
25 9
24
14
29
5557 54 53
59
60 58 2
262728
15
30
56 4832 31343536374042 39 38
44
45 43 41 331
1213
238
34
1819
5671011
17
20
47 46
495051
2122
52 16
25 9
24
14
29
5557 54 53
59
60 5826
27
28
15
30
56 4832 31343536374042 39 38
44
45 43 41 33
1213
238
[B] [D]
[C]
65
16 15141312 11 43
24 23 2122 10 9 8 7
21
1920 18 17
C34
17 16
26 25 15 14
65 3
42
13 12
23 2224 1110 9
212019 87
18
1
C35
[E]G28
12345678910111213141516
17181920212223242526272829303132
124
53
67
891011
1213141516171819202122
G37
E46
124
53
67
891011121314
1234567891011
141516
36 34 33 32 31 30 29 24 23
37
181920
G28-9G28-7REDWHTE23-3E23-18
REDWHTC37-13C37-12 6
[F]
E03
15
16
17
18
19
20
21
22
23
24
25 2
3
4
5
6
7
8
9
10
11
12
1
13
14
26
I6RS0CA50002-01
[A]: ECM connector (viewed from harness side)
1. ECM
[B]: Keyless start control module connector (v iewed from harness side) 2. TCM (A/T model)
[C]: BCM connector (viewed from harness side) 3. Keyless start control module
[D]: TCM connector (A/T model) (viewed from harness side) 4. BCM
[E]: Combination meter connector (viewed from harness side) 5. Combination meter
[F]: ABS control module connector (viewed from terminal side) 6. ABS control module
DTC detecting conditionTrouble area
Keyless start control module cannot receive data sent by 
CAN from BCM • CAN communication circuit
• Keyless start control module
• Combination meter
•BCM  
Page 1489 of 1496
Downloaded from www.Manualslib.com manuals search engine Keyless Start System:  10E-27
DTC No. 33: Control Module Communication Bus OffS7RS0BA504021
Wiring Diagram
Refer to “DTC No. 31: Lost Communication with BCM”.
DTC Detecting Condition and Trouble Area
DTC Confirmation Procedure1) Clear DTC referring  to “DTC Clearance”.
2) Start engine and run it for 1 min. or more.
3) Check DTC referring to “DTC Check”.
Troubleshooting 8
DTC check of keyless start control module
1) Turn ignition switch to OFF position.
2) Disconnect connector of any one of control module other 
than keyless start control module.
3) Recheck keyless start  control module for DTC.
Is DTC No.31 detected? Using same method, 
disconnect connectors 
of control module other 
than keyless start 
control module one by 
one to check if DTC 
No.31 is detected.
If DTC No.31 is 
detected even through 
connector of control 
module other than 
keyless start control 
module is disconnected, 
substitute a known-
good keyless start 
control module and 
recheck.Check power and 
ground circuit of 
disconnected control 
module and recheck. If 
circuit is OK, substitute 
a known-good 
disconnected control 
module and recheck.
Step Action Yes No
DTC detecting condition
Trouble area
Communication is not availabl e with all control modules 
connected by CAN • CAN communication circuit
• Combination meter
• Keyless start control module
•BCM
• TCM (A/T model)
•ECM
• ABS control module
Step
Action YesNo
1 Was “Keyless Start System Check” performed? Go to Step 2.Go to “Keyless Start 
System Check”.
2 Control module connector check
1)  Check connection of connectors of all control modules 
communicating by means of CAN.
2) Recheck keyless start  control module for DTC.
Is DTC No. 33 detected? Go to Step 3.
Intermittent trouble. 
Check for intermittent 
referring to “Intermittent 
and Poor Connection 
Inspection in Section 
00”.