2006 SUZUKI SX4 diagram

Downloaded from www.Manualslib.com manuals search engine 10B-17 Body Electrical Control System:
DTC B1133 (DTC No. 1133): Battery Voltage Too HighS6RW0DA204008
Wiring Diagram
Refer to “BCM Power Circuit and Ground Circuit Check”.
DTC Detecting Condition and Possible Cause
Flow Test Description
Step 1: Check charging system
DTC Troubleshooting4Ground circuit check
1) Turn ignition switch to OFF position.
2) Check for proper connection to junction block connector
at terminals “G271-3”, “G272-9” and “L314-4”.
3) If OK, then measure resistance between following
terminals.
• Between “G271-3” terminal of junction block
connector and vehicle body ground
• Between “G272-9” terminal of junction block
connector and vehicle body ground
• Between “L314-4” terminal of junction block connector
and vehicle body ground
Is each resistance 2
Ω or less?BCM power supply
circuit and ground circuit
are in good condition.Repair ground circuit. Step Action Yes No
DTC detecting condition Possible cause
Power voltage supplied from battery to BCM is
higher than 16V.• Charging system malfunction
• BCM malfunction
Step Action Yes No
1Charging system operation check
1) Check generator for operation referring to “Generator
Test (Overcharged Battery Check) in Section 1J”.
Is it in good condition?Substitute a known
good BCM (included in
junction block) and
recheck.Repair charging system.

Downloaded from www.Manualslib.com manuals search engine Body Electrical Control System: 10B-18
DTC B1141 / DTC B1142 (No. 1141 / No. 1142) Outside Air Temperature (Ambient Temp.) Sensor
Circuit Malfunction
S6RW0DA204009
Wiring Diagram
DTC Detecting Condition and Possible Cause
Flow Test Description
Step 1: Check whether malfunction is in outside air temperature sensor.
Step 2: Check outside air temperature sensor circuit.
DTC Troubleshooting
YEL/RED
YEL/BLK
5V
E04-10
E04-8
12E04
1 2 4 53 6 7
8 9 10 11 12 13 14
[A]
I6RW0CA20007-01
[A]: BCM connector viewed from harness side 2. BCM
1. Outside air temperature sensor
DTC detecting condition Possible cause
DTC B1141 (DTC No. 1141):
Input signal from outside air temperature sensor is higher
than 4.88 V.• Open in outside air temperature sensor circuit
• Outside air temperature sensor malfunction
• BCM malfunction
DTC B1142 (DTC No. 1142):
Input signal from outside air temperature sensor is lower
than 0.1 V.• Short in outside air temperature sensor circuit
• Outside air temperature sensor malfunction
• BCM malfunction
Step Action Yes No
1 Outside air temperature sensor check
1) Turn ignition switch to OFF position.
2) Disconnect connector from outside air temperature
sensor.
3) Check outside air temperature sensor for resistance
referring to “Outside Air Temperature Sensor Inspection
(If Equipped) in Section 9C”.
Is it in good condition?Go to Step 2. Replace outside air
temperature sensor.
2Outside air temperature sensor circuit check
1) Disconnect connector from BCM and check for proper
terminal connection to BCM connector.
2) If connections are OK, check outside air temperature
sensor circuit for open, short and high resistance.
Is each circuit in good condition?Substitute a known-
good BCM (included in
junction block) and
recheck.Repair circuit.

Downloaded from www.Manualslib.com manuals search engine 10B-19 Body Electrical Control System:
DTC B1150 (No. 1150): Air Bag Communication Circuit MalfunctionS6RW0DA204010
Wiring Diagram
DTC Detecting Condition and Possible Cause
Flow Test Description
Step 1: Check air bag communication circuit.
Step 2: Check air bag communication circuit.
DTC Troubleshooting
YEL
5V
L313-2L04-37
2
1
L313
1 2 43
[A]
I6RW0CA20008-01
[A]: Junction block connector viewed from harness side 2. BCM
1. SDM
DTC detecting condition Possible cause
After ignition switch is turned ON, abnormal signal is fed
from SDM to BCM.• Air bag communication circuit open or short
• SDM malfunction
• BCM malfunction
Step Action Yes No
1Air bag communication circuit check
1) Turn ignition switch to OFF position.
2) Disconnect connectors from junction block and SDM.
3) Check for proper terminal connection to BCM and SDM
connectors.
4) If connections are OK, check air bag communication
circuit for open, short and high resistance.
Is circuit in good condition?Go to Step 2. Repair circuit.
2Air bag communication circuit check
1) Turn ignition switch to OFF position.
2) Connect connectors to junction block.
3) Turn ignition switch to ON position.
4) Measure voltage between “L313-2” terminal of junction
block connector and vehicle body ground.
Is voltage 4 – 6 V?Substitute a known-
good SDM and recheck.Substitute a known-
good BCM (included in
junction block) and
recheck.

Downloaded from www.Manualslib.com manuals search engine Body Electrical Control System: 10B-20
DTC B1157 (No. 1157) Air Bag Deployment Signal InputS6RW0DA204011
Wiring Diagram
Refer to “DTC B1150 (No. 1150): Air Bag Communication Circuit Malfunction”.
DTC Detecting Condition and Possible Cause
Flow Test Description
Step 1: Check DTC for SDM.
DTC Troubleshooting
DTC B1170 (No. 1170): EEPROM Access ErrorS6RW0DA204012
DTC Detecting Condition and Possible Cause
DTC Troubleshooting
NOTE
Before performing steps below, be sure to perform “Body Electrical Control System Check”.

1) Ignition switch OFF.
2) Replace BCM.
3) Repeat BCM Check Flow Table.
DTC U0073 (No. 0073): Control Module Communication Bus OffS6RW0DA204013
Refer to “Troubleshooting for CAN-DTC in Section 1A”.
DTC U0100 (No. 0100): Lost Communication with ECMS6RW0DA204014
Refer to “Troubleshooting for CAN-DTC in Section 1A”.
DTC U0101 (No. 0101): Lost Communication with TCMS6RW0DA204018
Refer to “Troubleshooting for CAN-DTC in Section 1A”.
DTC U0155 (No. 0155): Lost Communication with Instrument Panel Cluster (IPC) Control ModuleS6RW0DA204015
Refer to “Troubleshooting for CAN-DTC in Section 1A”.
DTC U1144 (No. 1144): Lost Communication with Keyless Start Control ModuleS6RW0DA204016
Refer to “Troubleshooting for CAN-DTC in Section 1A”. DTC detecting condition Possible cause
Air bag deployment signal is fed from SDM to BCM. • Air bag component parts
• BCM malfunction
Step Action Yes No
1DTC check of SDM
1) Check DTC stored in SDM referring to “DTC Check in
Section 8B”.
Is DTC B1021 detected?Go to “DTC B1021:
Front Air Bag
Deployment Record in
Section 8B”.Substitute a known-
good BCM (included in
junction block) and
recheck.
DTC detecting condition Possible cause
Data write error or check sum error. BCM malfunction

Downloaded from www.Manualslib.com manuals search engine 10B-21 Body Electrical Control System:
Inspection of BCM and Its CircuitsS6RW0DA204017
BCM and its circuits can be checked at BCM wiring couplers by measuring voltage and resistance.
CAUTION!
BCM cannot be checked by itself. It is strictly prohibited to connect voltmeter or ohmmeter to BCM
with couplers disconnected from it.

Voltage Check
1) Disconnect negative cable (–) at battery.
2) Remove BCM (included in junction block) referring to “BCM (Included in Junction Block) Removal and Installation”.
3) Connect connectors to BCM (1) and junction block (2).
4) Check voltage at each terminal number of couplers connected.
For connector and terminal number, refer to “Connector Layout Diagram of BCM and Junction Block”.
NOTE
• As each terminal voltage is affected by the battery voltage, confirm that it is 11 V or more when
ignition switch is ON.
• Voltage with asterisk (*) can not be measured by voltmeter because it is pulse signal.
Check it with oscilloscope if necessary.

BCM connector “L01”
1
2
1
2
I4RS0AA20030-01
Terminal Circuit Normal voltage Condition
L01-1Passenger side door lock
actuator control (Unlock) (if
equipped)10 – 14 VUnlock signal is output for passenger side
door lock actuator
0 VUnlock signal is not output for passenger side
door lock actuator
L01-2 — — —
L01-3 Rear end door switch10 – 14 V Rear end door is closed
0 V Rear end door is opened
L01-4Rear end door opener switch
(if equipped)10 – 14 V Rear end door opener switch is not pushed
0 V Rear end door opener switch is pushed
L01-5Manual door lock switch
(Unlock) (if equipped)10 – 14 VManual door lock switch is at any position
other than unlock position
0 V Manual door lock switch is at unlock position
L01-6 Parking brake switch*0 – 3 V
↑↓
10 – 14 VRefer to “Reference waveform No. 1: ”
0 VIgnition switch is at ON position and parking
brake lever is pulled up
L01-7 Driver side door switch10 – 14 V Driver side door is closed
0 V Driver side door is opened
L01-8 — — —
L01-9 — — —

Downloaded from www.Manualslib.com manuals search engine Immobilizer Control System: 10C-3
Schematic and Routing Diagram
Immobilizer Control System Wiring Circuit DiagramS6RW0DA302001
NOTE
For more details about power supply circuit, ground wire circuit, and each circuit for ECM, BCM, ABS
control module, keyless start control module and combination meter, refer to “System Circuit Diagram
in Section 9A”.

BLK/WHT
BLK/ORN12V
G17-1
G17-2
12V
5V
12V
12VYEL/RED
YEL/BLK
G17-4
G17-3
5V
BRN
BRN/YEL
BLK/YEL
1 2
22
2 34
251014
15
1 2 3
4 G17
[A]
5
6
G16-20 G16-29 G16-30 G146-3 G146-7 G146-8
WHT/RED
5V
5V
9
G16-18G16-19 E01-13
E01-28
BLU
BLU
RED
WHTE08-12
E08-1E01-18
E01-3
RED
WHTE08-13
E08-2E04-1
E04-2
WHT
RED
G04-1
G04-3
12V
E04-9
G04-5
PPL/WHTL313-3 8
11
12
13
G17-5WHT 76
G17-6WHT/RED
17
REDWHT
REDWHT
G241-10 G241-7
IG1
18
WHT
REDG04-4
G04-2
16 [B]
I6RW0DA30001-02

Downloaded from www.Manualslib.com manuals search engine Immobilizer Control System: 10C-9
Immobilizer Indicator Light Does Not Come ON with Ignition Switch ON and Engine StopS6RW0DA304006
Wiring Diagram
Refer to “Immobilizer Control System Wiring Circuit Diagram”.
Circuit Description
When the ignition switch is turned ON, ECM transmits the indication ON signal to the combination meter to turn ON the
immobilizer indicator light in case that there is not any problem with the immobilizer control system. Then, the
combination meter turns ON the light. When the engine is started up, ECM transmits the indication OFF signal to the
combination meter to turn OFF the light. Then, the combination meter turns OFF the immobilizer indicator light.
However, in case that there is some trouble with the immobilizer control system, the immobilizer indicator light flashes
ON and OFF when the ignition switch is turned ON.
Troubleshooting
Step Action Yes No
1Immobilizer indicator light power supply check
1) Turn the ignition switch to ON position.
Do other warning lights come ON?Go to Step 2. Go to Step 4.
2DTC check of ECM
1) Check ECM for DTC referring to “DTC Check in Section
1A”.
Is DTC U0073, U0101, U0121 and/or U0140 detected?Go to applicable DTC
diag. flow.Go to Step 3.
3DTC check of BCM
1) Check BCM for DTC referring to “DTC Check in Section
10B”.
Is DTC U0073, U0100, U0101, U0155 and/or U1144
detected?Go to applicable DTC
diag. flow.Substitute a known-
good combination meter
and recheck. If
immobilizer indicator
light still remains OFF,
substitute a known-
good ECM and recheck.
4Fuse check
1) Turn the ignition switch to OFF position.
2) Check fuse for combination meter circuit.
Is fuse blown?Replace blown fuse,
and then check for
short.Go to Step 5.
5Combination meter power supply wire circuit check
1) Remove combination meter referring to “Combination
Meter Removal and Installation in Section 9C”.
2) Check for proper connection at terminals and wires of
combination meter connector.
3) If OK, turn the ignition switch to ON position and
measure voltage between power supply terminal of
combination meter and vehicle body ground. Refer to
“Combination Meter Circuit Diagram in Section 9C”.
Is it 10 – 14 V?Go to Step 6. Repair open in power
supply wire circuit.
6Combination meter ground wire circuit check
1) Turn ignition switch OFF position.
2) Measure resistance between ground terminal of
combination meter connector and vehicle body ground.
Refer to “Combination Meter Circuit Diagram in Section
9C”.
Is resistance 1
Ω or less?Substitute a known-
good combination meter
and recheck. If still
remains OFF, substitute
a known-good ECM and
recheck.Repair open or high
resistance in ground
circuit.

Downloaded from www.Manualslib.com manuals search engine 10C-10 Immobilizer Control System:
Immobilizer Indicator Light Remains ON after Engine StartS6RW0DA304007
Wiring Diagram
Refer to “Immobilizer Control System Wiring Circuit Diagram”.
Circuit Description
Refer to “Immobilizer Indicator Light Does Not Come ON with Ignition Switch ON and Engine Stop”.
Troubleshooting
DTC P1614: Transponder Response ErrorS6RW0DA304008
Wiring Diagram
Refer to “Immobilizer Control System Wiring Circuit Diagram”.
Detecting Condition and Trouble Area
TroubleshootingStep Action Yes No
1DTC check of ECM
1) Check ECM for DTC referring to “DTC Check in Section
1A”.
Is DTC detected?Go to applicable DTC
diag. flow.Go to Step 2.
2CAN 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
light still remains ON,
substitute a known-
good ECM and recheck.Repair circuit.
Detecting Condition Trouble Area
Transponder code in transponder built in ignition key
cannot be read through ICM.• Use of ignition key without transponder
• Use of unregistered ignition key
• Corruption of transponder in ignition key
•ICM
•ECM
Step Action Yes No
1Was “Immobilizer Control System Check” performed?Go to Step 2. Go to “Immobilizer
Control System Check”.
2DTC check of ECM
1) Check if any DTC other than P1614 is detected referring
to “DTC Check”.
Is DTC other than P1614 detected?Go to applicable DTC
diag. flow.Go to Step 3.
3Registration of ignition key in use with ECM
1) Register ignition key in use with ECM referring to
“Registration of the Ignition Key”.
Was registration of ignition key completed?Recheck DTC. Go to Step 4.
4Registration of the spare ignition key
1) Register the spare ignition key with ECM referring to
“Registration of the Ignition Key”.
Was registration of spare ignition key completed?Replace ignition key
which can not be
registered.Substitute a known-
good ECM and recheck.