Display SUZUKI SWIFT 2006 2.G Service Owners Manual
Page 1417 of 1496
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  
Page 1418 of 1496
Downloaded from www.Manualslib.com manuals search engine 10B-15 Body Electrical Control System: 
Without Using SUZUKI Scan Tool1) Turn ignition switch to OFF position.
2) Perform following Steps a) to d) within 10 seconds af ter ignition switch is turned ON and engine stops.
a) Turn headlight switch to “SMALL” position.
b) Turn headlight switch to “OFF” position.
c) Repeat Steps a) and b) 2 times.
d) Press and release driver side door switch 3 times.
3) Check DTC displayed on odometer of combination meter or  read flashing pattern of theft deterrent light which 
represents DTC as shown in the following example and write it down.
When more than 2 DTCs are stored in memory, flashing for each DTC starts with the smallest DTC number in 
increasing order. Also, DTC is indicated repeatedly until the ignition switch is turned OFF.
4) After completing the check, turn ignition switch to OFF position.
DTC ClearanceS7RS0BA204006
After repair or replace of malfunction part(s), clear all 
DTCs by performing the following procedure.
Using SUZUKI Scan Tool 1) Connect SUZUKI scan tool to data link connector in  the same manner as when making this connection 
for DTC check.
2) Turn ignition switch ON and engine stops.
3) Erase DTC according to instructions displayed on  scan tool. Refer to scan tool operator’s manual for 
further details.
4) After completing the clear ance, turn ignition switch 
off and disconnect scan tool from data link 
connector. Without Using SUZUKI Scan Tool
1) Turn ignition switch to OFF position.
2) Perform following Steps a) to d) within 10 seconds  after ignition switch is turned ON and engine stops.
a) Turn headlight switch to “SMALL” position.
b) Turn headlight switch to “OFF” position.
c) Repeat Steps a) and b) 3 times.
d) Press and release driver side door switch 4  times.
3) After completing above Steps, confirm that no  malfunction DTC is detected.
B A
[B] [A]
[C]
B A B A
3
113
3
113
T2
T1 T1 T1 T1
1
2
T2T2
T2
T1 T1 T1 T1T2T2
0
T2
0
T2
0
T2
0
T2
11 6 0
T1 T1 T1
T2
T3T2T2T2
I4RS0AA20007-01
[A]: No DTC (No. 0000) B: Indicator lamp turned OFF1. Theft deterrent light
[B]: DTC B1133 (No. 1133) T1: 0.3 seconds2. Odometer
[C]: When 2 DTCs are detected T2: 1.0 seconds
A: Indicator lamp tur ned ON T3: 3.0 seconds  
Page 1436 of 1496
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 1440 of 1496
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  
Page 1448 of 1496
Downloaded from www.Manualslib.com manuals search engine 10C-5 Immobilizer Control System: 
Diagnostic Information and Procedures
Immobilizer Control System CheckS7RS0BA304001
Diagnostic Trouble Code (DTC) CheckS7RS0BA304002
NOTE
To know how to use SUZUKI scan tool in 
detail, refer to its operator’s manual.
 
Using Scan Tool
1) Turn the ignition switch to OFF position.
2) Connect SUZUKI scan tool to data link connector  (DLC) (1) located under instrument panel at driver’s 
seat side.
Special tool
(A):  SUZUKI scan tool 3) Turn the ignition switch to ON position.
4) Check if any DTC is stored
 in ECM according to the 
instructions displayed on SUZUKI scan tool. 
5) After completing the check,  turn ignition switch to 
OFF position, and then di sconnect SUZUKI scan 
tool from DLC.
Using Diagnosis Connector (If equipped)
Refer to “Without Using Scan Tool (Vehicle Equipped 
with Diagnosis Connector)” under “DTC Check in 
Section 1A”.
Step Action Yes No
1 Immobilizer indicator lamp check
Turn ignition switch to ON position using ignition key.
Does it immobilizer in dicator lamp come on? Go to Step 2.
Check if DTC P1636 
and/or P1638 are 
detected by ECM 
referring to “Diagnostic 
Trouble Code (DTC) 
Check”. If detected, go 
to applicable DTC diag. 
flow. If not detected, go 
to “Immobilizer Indicator 
Lamp Does Not Come 
ON with Ignition Switch 
ON and Engine Stop”.
2 Immobilizer indicator lamp check
Does it immobilizer indicato r lamp flashes on and off 
continuously in Step 1? Check ECM for DTC 
referring to “Diagnostic 
Trouble Code (DTC) 
Check”. Then, Go to 
applicable DTC diag. 
flow.Go to Step 3.
3 Engine start check
Start engine using ignition key.
Does engine start? Go to Step 4.
Perform “Engine and 
Emission Control 
System Check in 
Section 1A”.
4 Immobilizer indicator lamp check
Check Immobilizer indicator la mp remains ON after engine 
start.
Does immobilizer indicator la mp remains ON after engine 
start? Go to “Immobilizer 
Indicator Lamp 
Remains ON after 
Engine Starts”.
Immobilizer system is 
good condition. Then go 
to “Keyless Start 
System Check in 
Section 10E”. (Vehicle 
equipped with keyless 
start system only)
(A)1
I4RS0BA30003-03  
Page 1449 of 1496
Downloaded from www.Manualslib.com manuals search engine Immobilizer Control System:  10C-6
Diagnostic Trouble Code (DTC) ClearanceS7RS0BA304003
NOTE
To know how to use SUZUKI scan tool in 
detail, refer to its operator’s manual.
 
Using Scan Tool
1) Turn the ignition switch to OFF position,
2) Connect SUZUKI scan tool to data link connector  (DLC) (1) located under instrument panel at driver’s 
seat side.
Special tool
(A):  SUZUKI scan tool 3) Turn the ignition switch to ON position.
4) Clear DTC(s) according to the instructions displayed 
on SUZUKI scan tool.
5) After completing the clearance, turn the ignition  switch to OFF position, and then disconnect SUZUKI 
scan tool from DLC.
Using Diagnosis Connector (If Equipped)
Refer to “Without Using Scan Tool” under “DTC 
Clearance in Section 1A”.
Diagnostic Trouble Code (DTC) TableS7RS0BA304004
ECM
NOTE
If any DTC other than the above DTCs is detected, refer to “DTC Table in Section 1A”. 
 
(A)1
I4RS0BA30003-03
DTC No. Detecting Item Detecting ConditionImmobilizer 
Indicator Lamp
P1614 Transponder Response Error Transponder code in the transponder built in 
the ignition key cannot be read through ICM.Flash
P1615 ID Code Does Not Re
gistered (Vehicle 
equipped with Keyless Start System only) • While registering the transponder code in 
the transponder built in the ignition key in 
ECM, the keyless start control module 
sent a signal to ECM indicating that the ID 
code could not be registered.
• The ID code could not be registered in the  keyless start control module or ECM. Flash
P1616 Different Registration ID Codes (Vehicle 
equipped with Keyless Start System only) ECM detects different ID codes registered in 
ECM and keyless start system.
Flash
P1618 CAN Communication Error (Reception Error 
for Keyless Start Control Module) (Vehicle 
equipped with Keyless Start System only) Reception error communication data for 
keyless start control module is detected for 
longer than specified time continuously.
Flash
P1621 Immobilizer Commu nication Line ErrorCommunication error between ICM and 
ECM is detected by ECM. Flash
P1622 EEPROM Reading / Writing Error EEPROM in ECM is corrupted.Flash
P1623 Unregistered Transponder Transponder code in the transponder built in 
the ignition key is invalid.Flash
P1625 Immobilizer Antenna Error ICM is faulty.Flash
P1636 Immobilizer Information Registration Failure Communication error between ECM and 
BCM is detected by ECM.No operation
P1638 Immobilizer Info rmation Mismatched • Communication error between ECM and 
BCM is detected by ECM
• Wrong ECM or BCM is used. No operation