2006 SUZUKI SX4 K-line

Downloaded from www.Manualslib.com manuals search engine 1A-4 Engine General Information and Diagnosis:
Outline of troubleshooting
When there is a trouble with CAN, perform “Troubleshooting for Communication Error with Scan Tool Using CAN” and/
or “Troubleshooting for CAN-DTC”. Not using this procedure or performing troubleshooting in any other way may skip
some check points resulting in misdiagnosis or take a longer time than necessary.
1) Checking connector related to CAN
2) Checking CAN line
3) Checking each control module/sensor using “DTC check” or “Bus Check”
4) Checking power and ground connection of each control module/sensor
CAN-DTC
Even when DTC related to CAN (= CAN-DTC) as described below is detected, it is not possible to point out the
specific trouble point by CAN-DTC itself. Be sure to troubleshoot according to “Troubleshooting for CAN-DTC”.
CAN-DTC table
Communication with scan tool
• K line or CAN line is used for communication between each control module and scan tool.
Refer to “CAN schematic and routing diagram: ” to determine which line is used for communication between each
control module and scan tool.
• ECM and TCM use CAN line for communication with scan tool. Even if CAN has a trouble other than between DLC
and BCM, communication may also fail between scan tool and these control modules. In such case, perform
troubleshooting according to “Troubleshooting for Communication Error with Scan Tool Using CAN”.
• BCM, ABS control module and 4WD control module use K-line for communication with scan tool. Even if CAN has a
trouble, it is possible to communicate between scan tool and these control modules.
Bus check with SUZUKI scan tool
SUZUKI scan tool (SUZUKI-SDT) efficiently diagnoses a CAN bus malfunction by “Communication Bus Check” and
“Communication Malfunction DTC” under “Bus check”.
“Communication Bus Check” can display all control modules/sensors name communicated by CAN.
Also, “Communication Malfunction DTC” can display only CAN-DTC which is detected by the control modules (ECM
and TCM) communicating with scan tool using CAN line.
[A]: Non-Taiwan model [C]: CAN high line (RED) [E]: K-line
[B]: Taiwan model [D]: CAN low line (WHT)
No. Part Name Communication with scan tool Monitor of CAN-DTC
1. ABS control module K-line Not available
2. ECM CAN Available
3. TCM CAN Available
4. BCM K-line Available
5. Keyless start control module Not available Available
6. 4WD control module K-line Available
7. Combination meter Not available Not available
8. CAN junction connector — —
9. DLC — —
Detected Control Module CAN-DTC
ECM U0073/U0101/U0121/U0140/P1618
TCM U0073/U0100
BCM U0073/U0100/U0101/U0155/U1144
4WD control module U0073/U0100/U0121/U0155
Keyless start control module No.31/No.33

Downloaded from www.Manualslib.com manuals search engine Engine General Information and Diagnosis: 1A-29
Troubleshooting
Step Action Yes No
1Scan tool check
1) Disconnect scan tool from DLC with ignition switch
turned OFF.
2) Check for proper connection to all terminals of scan tool
connector.
3) If OK, connect scan tool to another vehicle of this type
with ignition switch turned OFF.
4) Check communication between scan tool and ECM by
DTC check in ECM.
Is it possible to check DTC in ECM?Go to Step 2. Scan tool faulty. Refer
to its operator’s manual.
2DLC power circuit check
1) Check for proper connection to all DLC (1) terminals with
ignition switch turned OFF.
2) If OK, measure voltage between +B terminal (2) of DLC
and vehicle body ground with ignition switch turned to
ON position.
Is voltage 10 – 14 V?Go to Step 3. Repair power circuit.
3DLC ground circuit check
1) Ignition switch turn to OFF position.
2) Check DLC (1) ground circuits as follows.
• Measure resistance between signal ground terminal
(2) of DLC and vehicle body ground.
• Measure resistance between body ground terminal (3)
of DLC and vehicle body ground.
Is resistance 1
Ω or less?Go to Step 4. Repair ground circuit(s).
4DTC Check
1) Turn ignition switch to OFF position.
2) Connect scan tool to DLC.
3) Check DTC in the following control modules that
communicate with scan tool by K-line.
•BCM
• Keyless start control module
• 4WD control module
Is there any DTC other than CAN-DTC?Go to applicable
troubleshooting of DTC
other than CAN-DTC.Go to Step 5.
2
9 10 11 12 13 14 15 16
1 2 3 4 5 6 7 8
1
I7RW01110096-01
23 1
9 10 11 12 13 14 15 16
1 2 3 4 5 6 7 8
I7RW01110097-01

Downloaded from www.Manualslib.com manuals search engine 9A-7 Wiring Systems:
5) Junction block (J/B)
6) Connector location, shape and terminal No.
Refer to “Connector Layout Diagram”.
Refer to “System Circuit Diagram”.
Refer to “List of Connectors”.
IMMOBI IGIG1IG Coil, etcE39 E41E40 BCM G34G33 G32 K01 L04 L05 L06
IG Coil IG1
15A
MTR
10A
A/B
15A
2
65
13
J/BConnector No. / Terminal No.
BCM ;IG1
MTR Power, etc
A/B CONTK-LINE
K-LINE
A/B SIGNAL
A/B SIGNAL
A/B SIG
A/B SIG
IG Sig
10AEPS ATMTA
4
6
1
3
24
8
11
9
12
9
11
23
25
30
29
Example
J/B
J/B
ORN
GRNBLU
J/B
J/B inner circuit
BLK/WHT
I5RW0A910990-03
"SYSTEM CIRCUIT DIAGRAM"
-Connector code and terminal No.
"CONNECTOR LAYOUT DIAGRAM"
-Connector location.
CROSS-REFERENCE
"CONNECTOR LIST"
-Connector shape and terminal position.
C02
C02C02
C02
C02
C02
I5RW0A910991-02

Downloaded from www.Manualslib.com manuals search engine Wiring Systems: 9A-44
1IG2 SW2
6
LAMP FL
1A/B CONT
A/B SIGNAL
K-LINE
K-LINE
A/B SIGNAL
BCM IG1
D/SL-IN
D/L-IN
D/UL-1
SEQULITY IN
HAZARD
TAIL BCM
D/L (BCM)
RR DEF RLY
BCM (+B)
DOME LP CONT
ACC
R/WIP
GND
SIGNAL GND (BCM)4A/B IND
32
98
2511
2423
206
1412
181
215
107
2217
3
1IG
3LP-L2LP-R
4+B5SW-L
7GND6SW-R
8HAZ
DOME LP (+B)543GND SPARE-1 DOME LP DOOR6HTR4ST1IG25ACC3IG SW (+B)2IG1
18107G271415G2727G27219G2721G27212G2719G27111G2723G2722G2728G272166G2716G2725G271810511G27113G2724G2721G27120G2722G2719G2723G27112G27214G272
10E3235E32512E3259E32514E3251E3258E3252E32511E3253E3256E3235E32316E3257E3254E3232E3239E3233E3237E32310E325 DEF IND RR FOG(+B)
*
*
TAIL(+B)
TAIL SW
TURN SW-L
TURN SW-R
METER (L)
METER (R)
HAZARD SW
HORN SW
H/L LVL SW
*
*
MTR (IG) ANGLE SENSOR
IG COIL
DOME +B
4WD CONT
ACC 2
A/B INDACC 1
F-WIP (RLY)
R-WASHER
*
*
* *
*GND (IP)
SIGNAL GND (IP)
*
*
*
IG COIL
EPS AT
ABS CONT
BACK
STOP SW
EPI
BUL IN
HORN
FR TURN (R)
FR TURN (L)
POSI LP
* *
EPI
STOP SW
F-WIP
HTR FUSE
ST RLY COIL
4
L314
15
L314
16
L314
5
L314
9
L314
212
L314
13
L315
14
L315
7
L315
15
L315
14
L314
11
L314
6
L315
5
L315
8
L314
7
L314
6
L314
18
L314
3
L314
L314
110
L314
9
L315
10
L315
1
L315
3
L315
2
L315
8
L315
11
L315
4
L315 SIGNAL GND (FL)
SEAT HTR
P/W
R-WIP (-)* *ACC 2
ACC 1*
*
DOME (+B)
* * *
*
RR DEF
HTR MIR (L)
HTR MIR (R)
TAIL LP, LICENSEPOWER DR
RR-TURN (L)
RR-TURN (R)
BUL-LD/L-1
D/SL-1 D/UL-1
STOP LP
IG1 ABS
*
*
IG COIL 15A
MTR 10A
A/B 15A
IG1 SIG 10A
ABS 10A
BACK 10A
TAIL 10A
D/L 20A
P/WT 20A
RR DEF 30A
RR FOG 15A
SPARE-2
ACC 15A
ACC 2 15A
WIP 30A
P/W 30A
RR WIP 15A
S/H 15A
IG2 SIG 10A
ST SIG 10A HORN HAZ 15A
STOP 15A4WD 15ARR DEF RLY
SPARE-3
HORN RLY
RR WIP RLY
G272 G272
G271
G272
G271
G272 G271
L314
DOME 15A
To instrument panel harness
(G273)*: Not used To floor harness
(L312)
To instrument panel
harness
(G271 , G272)
To main harness
(E323 , E325)
To floor harness (L314 , L315)To main
harness
(E324)
BCM
To flasher
relayTo floor
harness
(L313)
BLOWER FAN RLY
I6RW0D910904-03

Downloaded from www.Manualslib.com manuals search engine 9A-45 Wiring Systems:
Junction Block Inner Circuit (Detail (Except Taiwan))S6RW0D910D011
BCM (J/B side connector)
3
4
1
25
15 14 12
13 10
11 9 8 67
17
16182122 19
20
23
1234578 116
12 91034 652 1
G271 G273
G272
10
11 12 13 14 15 16 17 18 19123456789
20
345612L312
23414
3
561214 11
10
157 2 11316 9 8 6
5 4 3
2
1
7
11 10
9 8
15
14 13
1216
L313
L315 E325
2 1
123456789
15 16 17 18 11 10 12 13 14 1
234
5
678 910
E323
L314 E324
IG COIL
IG COILIG1
E323 E325E324 BCM G272G271 G273 L312 L313 L314 L315
IG COIL IG1
15A
MTR
10A
A/B
15A
2
6
5
13
J/BConnector No. / Terminal No.
MTR (IG)
A/B CONT
A/B IND
A/B IND
IG1 SIG
10AEPS AT
ABS CONT
STOP SW
STOP LP
EPI
BUL IN
BUL-LBACK H/L LVL SW
BCM IG111
6
1
4
2
A/B SIGNAL
A/B SIGNAL9
3
K-LINE
K-LINE8
12
9
14
2
3
1
2
11
8
ABS
10A
BACK
10A
ANGLE SENSOR
IG1 ABS16
8
1
(Continued)
Individual circuit fuse box No.2
(In J/B)
20
22
27
26
28
21
I6RW0C910923-01