2006 SUZUKI SX4 wiring system

Downloaded from www.Manualslib.com manuals search engine 3B-15 Differential:
4WD Position Indicator Does Not Come ON at Ignition Switch ON but Engine StopsS6RW0D3204013
Wiring Diagram
Circuit Description
4WD position indicator operates according to the signal from 4WD control module. If the 4WD control system is in
good condition, 4WD position indicator light up for 2 seconds when ignition switch is turned to ON position, and then
turned to OFF position. If an abnormality is detected in the system, 4WD position indicator remains lighting.
Troubleshooting
WHTYELRED/BLK
12
WHT/RED
WHT/RED
G26-12
G26-11
RED
BLK
WHT 56 47
12V
G26-10BLK
G26-22
G26-23REDWHT
3
1 2 3
4 5
6 7 8 9 10 11
12
13
14 15 16
17 18 19
20
21 22
23
24 25 26
[A]
I7RW01320004-01
[A]: 4WD control module connector “G26” (viewed from harness side) 4. Combination meter
1. Main fuse box 5. 4WD AUTO indicator
2. Junction block assembly 6. 4WD LOCK indicator
3. “METER” fuse 7. 4WD control module
Step Action Yes No
14WD position indicator power supply check
1) Turn ignition switch to ON position.
Do other indicators come ON?Go to Step 2. Go to Step 3.
2Check DTC
1) Connect scan tool to DLC with ignition switch OFF.
2) Turn ignition switch to ON position and check DTC.
Is there DTC(s) U0073, U0100, U0121 and/or U0155?Go to applicable DTC
diag. flow.Substitute a known-
good combination meter
and recheck. If 4WD
position indicator still
remains off, substitute a
known-good 4WD
control module and
recheck.

Downloaded from www.Manualslib.com manuals search engine Differential: 3B-16
4WD Position Indicator Remains ON Steady at Ignition Switch ONS6RW0D3204014
Wiring Diagram
Refer to “4WD Position Indicator Does Not Come ON at Ignition Switch ON but Engine Stops”.
Circuit Description
Transfer position indicator operates according to the signal from 4WD control module. If the 4WD control system is in
good condition, 4WD position indicator light up for 2 seconds when ignition switch is turned to ON position, and then
turned to OFF position. If an abnormality is detected in the system, 4WD position indicator remains lighting.
Troubleshooting3CAN communication circuit check
1) Check CAN communication circuit between combination
meter and 4WD control module referring to “DTC U0073:
Control Module Communication Bus Off”.
Is CAN communication circuit in good condition?Go to Step 4. Repair or replace.
4“METER” fuse check
1) Turn ignition switch to OFF position.
2) Check for fuse blown to “METER” fuse in junction block
assembly.
Is “METER” fuse in good condition?Go to Step 5. Replace “METER” fuse
and check for short.
5Combination meter power supply check
1) Remove combination meter referring to “Combination
Meter Removal and Installation in Section 9C”.
2) Check proper connection to “WHT/RED” and “BLK” wire
terminal of combination meter connector.
3) If OK, then turn ignition switch to ON position and
measure voltage between “WHT/RED” wire terminal of
combination meter connector and vehicle body ground.
Is it 10 – 14 V?Go to Step 6. “WHT/RED” wire is
open circuit.
6Combination meter ground circuit check
1) Turn ignition switch to OFF position.
2) Measure resistance between “BLK” wire terminal of
combination meter connector and vehicle body ground.
Is resistance 1
Ω or less?Substitute a known-
good combination meter
and recheck. If 4WD
position indicator still
remains OFF, substitute
a known-good 4WD
control module and
recheck.“BLK” wire is open or
high resistance circuit. Step Action Yes No
Step Action Yes No
1Check DTC
1) Check DTC referring to “DTC Check”.
Is there any DTC(s)?Perform DTC flow to
repair and retry.Go to Step 2.
2CAN communication circuit check
1) Check CAN communication circuit between combination
meter and 4WD control module referring to “DTC U0073:
Control Module Communication Bus Off”.
Is CAN communication circuit in good condition?Substitute a known-
good combination meter
and recheck. If 4WD
position indicator still
remains off, substitute a
known-good 4WD
control module and
recheck.Repair or replace.

Downloaded from www.Manualslib.com manuals search engine 3B-17 Differential:
DTC C1240: 4WD Control Module Power Supply Circuit MalfunctionS6RW0D3204015
Wiring Diagram
DTC Detecting Condition and Trouble Area
DTC Confirmation Procedure
1) Clear DTC using scan tool.
2) Turn ignition switch to ON position for 10 seconds.
3) Check DTC.
Troubleshooting
[A]: 4WD control module connector “G26” (viewed from harness side) 3. “4WD” fuse
1. 4WD control module 4. Main fuse box
2. “IG COIL” fuse
DTC detecting condition Trouble area
4WD control module power supply voltage is out of specification. 4WD control module power supply circuit
5V
5V
G26-12
G26-11
G26-10BLK
WHT/RED
RED/BLK
1
2
3
4
YEL
1 2 3
4 5
6 7 8 9 10 11
12
13
14 15 16
17 18 19
20
21 22
23
24 25 26
[A]
I7RW01320005-01
Step Action Yes No
1Was “4WD control system check” performed?Go to Step 2. Go to “4WD Control
System Check”.
24WD control module power circuit check
1) Disconnect 4WD control module connector with ignition
switch OFF.
2) Check for proper connection to “G26” terminal of 4WD
control module connector.
3) If connection is OK, measure voltage between “G26-11”
terminal of 4WD control module connector and vehicle
body ground with ignition switch ON.
Is it 10 – 14 V?Poor “G26-11”
connection or
intermittent trouble.
Check for intermittent
referring to “Intermittent
and Poor Connection
Inspection in Section
00”. If wire and
connections are OK,
substitute a known-
good 4WD control
module and recheck.“4WD” fuse blown,
“WHT/RED” or “YEL”
wire is circuit open or
circuit short.

Downloaded from www.Manualslib.com manuals search engine 3B-21 Differential:
DTC C1251: Coupling Air Temperature Sensor Circuit ShortS6RW0D3204018
Wiring Diagram
DTC Detecting Condition and Trouble Area
DTC Confirmation Procedure
1) Clear DTC using scan tool.
2) Turn ignition switch to ON position for 10 seconds.
3) Check DTC.
Troubleshooting
[A]: 4WD control module connector “G26” (viewed from harness side) 2. 4WD control module
1. Coupling air temperature sensor
DTC detecting condition Trouble area
Input signal from coupling air temperature sensor is lower than
specified value.• Coupling air temperature sensor
• Coupling air temperature sensor circuit
• 4WD control module
2
G26-25
G26-24ORN
BRN
5V
1
1 2 3
4 5
6 7 8 9 10 11
12
13
14 15 16
17 18 19
20
21 22
23
24 25 26
[A]
I7RW01320006-01
Step Action Yes No
1Was “4WD control system check” performed?Go to Step 2. Go to “4WD Control
System Check”.
2Coupling air temperature sensor circuit check
1) Disconnect connector from coupling air temperature
sensor with ignition switch turned OFF.
2) Check for proper connection to “BRN” and “ORN”
terminals of coupling air temperature sensor connector.
3) If connection is OK, measure voltage between “BRN”
terminal of coupling air temperature sensor connector
and vehicle body ground with ignition switch turned ON.
Is it 4 – 6 V?Go to Step 3. Go to Step 5.

Downloaded from www.Manualslib.com manuals search engine Differential: 3B-24
DTC C1253: Coupling Assembly Circuit ShortS6RW0D3204020
Wiring Diagram
DTC Detecting Condition and Trouble Area
DTC Confirmation Procedure
1) Clear DTC using scan tool.
2) Start engine and select 2WD/4WD switch to “LOCK” position.
3) Keep engine running at 2000 rpm for 10 seconds. or more.
4) Stop engine and check DTC.
Troubleshooting
12V
G26-3
YEL GRY
G26-2
L102-1
L102-4 12
1 2 3
4 5
6 7 8 9 10 11
12
13
14 15 16
17 18 19
20
21 22
23
24 25 26
[A]
21
[B]
I7RW01320007-01
[A]: 4WD control module connector “G26” (viewed from harness side) 1. Coupling assembly
[B]: Coupling assembly connector “L102” (viewed from harness side) 2. 4WD control module
DTC detecting condition Trouble area
2WD/4WD switch is changed of 4WD lock position, and then
vehicle is not changed for more than 5 seconds.• Coupling assembly
• Coupling assembly circuit
• 4WD control module
Step Action Yes No
1Was “4WD control system check” performed?Go to Step 2. Go to “4WD Control
System Check”.
2Coupling assembly circuit check
1) Disconnect coupling assembly connector “L102” with
ignition switch turned OFF.
2) Check for proper connection to “L102-1” and “L102-4”
terminals of coupling assembly connector.
3) If connection is OK, measure voltage between “L102-1”
terminal of coupling assembly connector and vehicle
body ground.
Is it 10 – 14 V?Go to Step 3. Go to Step 6.
3Coupling assembly ground circuit check
1) Measure resistance between “L102-4” terminal of
coupling assembly connector and vehicle body ground
with ignition switch turned OFF.
Is resistance below 5
Ω?Go to Step 4. Go to Step 5.

Downloaded from www.Manualslib.com manuals search engine 4-ii Table of Contents
Specifications .......................................................4D-4
Tightening Torque Specifications ........................4D-4
ABS ............................................................4E-1
Precautions........................................................... 4E-1
Precautions in Diagnosing Troubles ................... 4E-1
Precautions in On-Vehicle Service...................... 4E-1
General Description ............................................. 4E-2
ABS Description .................................................. 4E-2
ABS Hydraulic Unit / Control Module
Assembly Description ....................................... 4E-3
CAN Communication System Description........... 4E-3
Schematic and Routing Diagram ........................ 4E-4
ABS Schematic ................................................... 4E-4
ABS Wiring Circuit Diagram ................................ 4E-5
Component Location ........................................... 4E-8
ABS Components Location ................................. 4E-8
Diagnostic Information and Procedures ............ 4E-8
ABS Check .......................................................... 4E-8
ABS Warning Light Check................................. 4E-10
EBD Warning Light (Brake Warning Light)
Check .............................................................. 4E-10
DTC Check........................................................ 4E-11
DTC Table ......................................................... 4E-11
DTC Clearance ................................................. 4E-11
Scan Tool Data ................................................. 4E-12
ABS Warning Light Does Not Come ON at
Ignition Switch ON .......................................... 4E-13
ABS Warning Light Comes ON Steady ............. 4E-15
EBD Warning Light (Brake Warning Light)
Comes ON Steady .......................................... 4E-16
Serial Data Link Circuit Check .......................... 4E-17
DTC C1013: Control Module Mismatch ............ 4E-20
DTC C1015: G Sensor Circuit (4WD Model)..... 4E-21
DTC 1016: Brake Light Switch .......................... 4E-22
DTC C1021 / C1022 / C1025 / C1026 / C1031
/ C1032 / C1035 / C1036: Wheel Speed
Sensor Circuit / Sensor or Encoder ................ 4E-23
DTC C1033: Wheel Speed Sensor Deviation ... 4E-25
DTC C1041 / C1042 / C1045 / C1046 / C1051
/ C1052 / C1055 / C1056: Inlet / Outlet
Solenoid .......................................................... 4E-26DTC C1057: Power Supply Voltage Too High
/ Too Low ........................................................ 4E-27
DTC C1061: Pump Motor Circuit ...................... 4E-28
DTC C1063: Solenoid Valve Power Supply
Driver Circuit ................................................... 4E-29
DTC C1071: Control Module Internal Defect .... 4E-30
ABS Hydraulic Unit / Control Module
Assembly Power and Ground Circuit Check ... 4E-30
Repair Instructions ............................................ 4E-31
ABS Hydraulic Unit Operation Check................ 4E-31
ABS Hydraulic Unit / Control Module
Assembly Components ................................... 4E-32
ABS Hydraulic Unit / Control Module
Assembly On-Vehicle Inspection .................... 4E-33
ABS Hydraulic Unit / Control Module
Assembly Removal and Installation ................ 4E-33
Front and Rear Wheel Speed Sensor On-
Vehicle Inspection ........................................... 4E-34
Front Wheel Speed Sensor Removal and
Installation ....................................................... 4E-35
Front and Rear Wheel Speed Sensor
Inspection ........................................................ 4E-36
Rear Wheel Speed Sensor Removal and
Installation (4WD Model) ................................. 4E-36
Rear Wheel Speed Sensor Removal and
Installation (2WD Model) ................................. 4E-36
Front Wheel Speed Sensor Encoder On-
Vehicle Inspection ........................................... 4E-37
Front Wheel Speed Sensor Encoder Removal
and Installation ................................................ 4E-37
Rear Wheel Speed Sensor Encoder On-
Vehicle Inspection ........................................... 4E-37
Rear Wheel Speed Sensor Encoder Removal
and Installation ................................................ 4E-37
G Sensor Removal and Installation (4WD
Model) ............................................................. 4E-38
G Sensor Inspection (4WD Model) ................... 4E-38
Specifications ..................................................... 4E-39
Tightening Torque Specifications ...................... 4E-39
Special Tools and Equipment ........................... 4E-39
Special Tool ...................................................... 4E-39

Downloaded from www.Manualslib.com manuals search engine ABS: 4E-16
EBD Warning Light (Brake Warning Light) Comes ON SteadyS6RW0D4504010
Wiring Diagram
Referring to “Wiring Diagram” under “ABS Warning Light Does Not Come ON at Ignition Switch ON”.
Circuit Description
EBD warning lamp (brake warning lamp) is controlled by ABS control module and BCM through lamp driver module in
combination meter.
If EBD system is in good condition, ABS control module turns EBD warning lamp ON at the ignition switch ON, keeps
it ON for 2 seconds and then turns it OFF.
EBD warning lamp is turned ON continuously at the following conditions.
• EBD system is an abnormality
• Connector of ABS control module is disconnected
• Parking brake switch is ON
• Brake fluid level is lower than minimum level
The information of parking brake switch and brake fluid level are transmitted from BCM to lamp driver module in
combination meter through CAN communication line.
Troubleshooting
Step Action Yes No
1Parking brake and brake fluid level check
1) Make sure that:
• Parking brake is completely released.
• Brake fluid level is upper than the minimum level.
Are the check results OK?Go to Step 2. Release parking brake
completely and/or
replenish brake fluid.
2ABS warning light operation check
1) Turn ignition switch to ON position.
Does ABS warning light come on steady?Perform “ABS Warning
Light Comes ON
Steady” previously
outlined.Go to Step 3.
3Parking brake switch circuit and brake fluid level switch
circuit check
1) Release parking brake completely, and replenish brake
fluid.
2) Disconnect BCM connectors with ignition switch turned
OFF.
3) Measure resistance between each parking brake switch
circuit, brake fluid level switch circuit and vehicle body
ground.
Are resistance
∞Ω?Go to Step 4. Check each applicable
circuit for short to
vehicle body ground. If
OK then check parking
brake switch and/or
brake fluid level switch.
4DTC check of BCM
1) Connect scan tool to data link connector with ignition
switch turned OFF.
2) Turn ignition switch to ON position and check DTC of
BCM.
Is there DTC U0073?Go to “DTC U0073 (No.
0073): Control Module
Communication Bus Off
in Section 10B”.Go to Step 5.

Downloaded from www.Manualslib.com manuals search engine 4E-27 ABS:
DTC C1057: Power Supply Voltage Too High / Too LowS6RW0D4504018
Wiring Diagram
DTC Detecting Condition and Trouble Area
DTC Troubleshooting
WHTGRN
34 5
E08-23BLK
12VE08-9GRN/ORN
2
1
[A]E08
1
2
3
4
5
6
7 12
13
14
15
16
17
18
19
20
21
228
9
10
11
23
24
25
26
I7RW01450009-03
[A]: ABS control module connector (viewed from terminal side) 2. Main fuse box 4. Junction block assembly
1. Battery 3. Ignition switch 5. ABS hydraulic unit control module assembly
DTC Detecting Condition Trouble Area
ABS control module power supply voltage is too high or
too low.• ABS control module power supply circuit
• ABS control module
Step Action Yes No
1Was “ABS Check” performed?Go to Step 2. Go to “ABS Check”.
2Check ABS hydraulic unit / control module assembly
power and ground circuit
1) Check that ABS hydraulic unit / control module assembly
power supply circuit and ground circuit is in good
condition referring to “ABS Hydraulic Unit / Control
Module Assembly Power and Ground Circuit Check”.
Are check results OK?Go to Step 3 Repair ABS hydraulic
unit / control module
assembly power or
ground circuit.
3ABS hydraulic unit / control module power source
voltage check
1) Measure battery voltage with engine running at 3000
rpm.
Is voltage 15 V or less?Substitute a known-
good ABS hydraulic unit
/ control module
assembly and recheck.Check charging system
referring to “Generator
Test (Undercharged
Battery Check) in
Section 1J”.