check engine light SUZUKI SX4 2006 1.G Service Service Manual

Downloaded from www.Manualslib.com manuals search engine 4E-1 ABS:
Brakes
ABS
Precautions
Precautions in Diagnosing TroublesS6RW0D4500001
To ensure that the trouble diagnosis is done accurately
and smoothly, observe the following and follow “ABS
Check”.
• Diagnostic information stored in ABS control module
memory can be cleared as well as checked by using
SUZUKI scan tool. Before using scan tool, read its
Operator's (Instruction) Manual carefully to have good
understanding as to what functions are available and
how to use it.
• If the vehicle was operated in any of the following
ways, ABS warning light may light momentarily but
this does not indicate anything abnormal in ABS.
– The vehicle was driven with parking brake pulled.
– The vehicle was driven with brake dragging.
– The vehicle was stuck in mud, sand, etc.
– Wheel spin occurred while driving.
– Wheel(s) was rotated while the vehicle was jacked
up.
• Be sure to read “Precautions for Electrical Circuit
Service in Section 00” and “Precaution for CAN
Communication System in Section 00” before
inspection and observe what is written there.
• Be sure to use the trouble diagnosis procedure as
described in “ABS Check”. Failure to follow it may
result in incorrect diagnosis. (Some other diagnosis
trouble code may be stored by mistake in the memory
of ABS control module during inspection.)• When disconnecting ABS hydraulic unit / control
module connector (1), pull up lock lever (2) of
connector.
When connecting, set the connector on ABS hydraulic
unit / control module assembly and pull down the lock
lever (2) until it locks.
• Communication of ECM, BCM, combination meter,
4WD control module (if equipped), keyless start
control module (if equipped), TCM (if equipped), data
link connector and ABS control module is established
by CAN (Control Area Network).
Therefore, be sure to read “Precautions for Installing
Mobile Communication Equipment in Section 00”
before inspection and handling CAN communication
line.
Precautions in On-Vehicle ServiceS6RW0D4500002
When connector is connected to ABS hydraulic unit /
control module assembly, do not disconnect connectors
of sensors with ignition switch ON. Otherwise, DTC will
be set in ABS control module.
[A]: Disconnect C: Pull up to disconnect
[B]: Connect D: Pull down to connect
2 1
CD
[A]
[B]
I5RW0A450001-01

Downloaded from www.Manualslib.com manuals search engine 4E-3 ABS:
ABS Hydraulic Unit / Control Module Assembly
Description
S6RW0D4501002
ABS control module is a component of ABS hydraulic
unit / control module assembly and has the following
functions.
Self-Diagnosis Function
ABS control module diagnoses conditions of the system
component parts (whether or not there is any
abnormality) all the time and indicates the results
(warning of abnormality occurrence and DTC) through
the ABS warning light as described.• When ignition switch is turned ON, ABS warning light
lights for 2 seconds to check its circuit.
• When no abnormality has been detected (the system
is in good condition), ABS warning light turns OFF
after 2 seconds.
• When an abnormality in the system is detected, ABS
warning light lights and the area where that
abnormality lies is stored in the memory of EEPROM
in ABS control module.
CAN Communication System DescriptionS6RW0D4501003
Refer to “CAN Communication System Description in Section 1A” for CAN communication system description. ABS
control module communicates control data with each control module as follows.
ABS Control Module Transmission Data
1
I4RS0A450001-01
Wheel speed signal (Front-right)
Wheel speed signal (Front-left)
Wheel speed signal (Rear-right)
Wheel speed signal (Rear-left)
ABS active
ABS indication
EBD indicationCombination Meter
TransmitDATA
ABS control module ECM 4WD control module
I7RW01450001-06

Downloaded from www.Manualslib.com manuals search engine ABS: 4E-8
Component Location
ABS Components LocationS6RW0D4503001
Diagnostic Information and Procedures
ABS CheckS6RW0D4504001
Refer to the following items for the details of each step.
1
2
6
2
6
26
264
5
7
3
8
I5RW0A450006-02
1. ABS hydraulic unit / control module assembly 5. EBD warning light (Brake warning light)
2. Wheel speed sensors 6. Wheel speed sensor encoder (included in wheel hub assembly)
3. Brake light switch 7. Data link connector
4. ABS warning light 8. G sensor (4WD model)
Step Action Yes No
1) Malfunction analysis
1) Perform “Customer complaint analysis: ”.
2) Perform “Problem symptom confirmation: ”.
3) Perform “DTC check, record and clearance: ” and
recheck DTC.
Is there any malfunction DTC?Go to Step 4. Go to Step 2.
2) Driving test
1) Perform “Step 2: Driving Test: ”.
Is trouble symptom identified?Go to Step 3. Go to Step 6.
3) DTC check
1) Perform “DTC Check”.
Is it malfunction code?Go to Step 4. Go to Step 5.
4) ABS check
1) Inspect and repair referring to applicable DTC flow.
Does trouble recur?Go to Step 5. Go to Step 7.
5) Brakes diagnosis
1) Inspect and repair referring to “Brakes Symptom
Diagnosis in Section 4A”.
Does trouble recur?Go to Step 3. Go to Step 7.

Downloaded from www.Manualslib.com manuals search engine ABS: 4E-10
Problem symptom confirmation
Check if what the customer claimed in “Customer
Questionnaire” is actually found in the vehicle and if that
symptom is found, whether it is identified as a failure.
(This step should be shared with the customer if
possible.) Check warning lights related to brake system
referring to “EBD Warning Light (Brake Warning Light)
Check” and “ABS Warning Light Check”.
DTC check, record and clearance
Perform “DTC Check” procedure, record it and then
clear it referring to “DTC Clearance”.
Recheck DTC referring to “DTC Check”.
When DTC which is recorded at DTC check procedure is
detected again after performing DTC clearance, go to
“Step 4: ABS Check: ” to proceed the diagnosis.
When DTC which is recorded at DTC check procedure is
not indicated anymore after performing DTC clearance,
ABS control module does not perform the system
diagnosis, or temporary abnormality may occur,
therefore go to “Step 2: Driving Test: ” to proceed the
diagnosis.
Step 2: Driving Test
Test drive the vehicle at 40 km/h (25 MPH) for more than
a minute and check if any trouble symptom (such as
abnormal lighting of ABS warning light) exists.
If the malfunction DTC is confirmed again at ignition
switch ON, driving test as described is not necessary.
Proceed to Step 3.
Step 3: DTC Check
Recheck DTC referring to “DTC Check”.
Step 4: ABS Check
According to ABS Check for the DTC confirmation in
Step 3, locate the cause of the trouble, namely in a
sensor, switch, wire harness, connector, actuator
assembly or other part and repair or replace faulty parts.
Step 5: Brakes Diagnosis
Check the parts or system suspected as a possible
cause referring to “Brakes Symptom Diagnosis in
Section 4A” and based on symptoms appearing on the
vehicle (symptom obtained through Steps 1 and 2 and
repair or replace faulty parts, if any).
Step 6: Check for Intermittent Problem
Check parts where an intermittent trouble is easy to
occur (e.g., wire harness, connector, etc.), referring to
“Intermittent and Poor Connection Inspection in Section
00” and related circuit of trouble code recorded in Step 1
to 3.
Step 7: Final Confirmation Test
Confirm that the problem symptom has gone and the
ABS is free from any abnormal conditions. If what has
been repaired is related to the malfunction DTC, clear
the DTC once referring to “DTC Clearance” and perform
test driving and confirm that no DTC is indicated.ABS Warning Light CheckS6RW0D4504002
1) Turn ignition switch ON.
2) Check that ABS warning light (1) comes ON for
about 2 seconds and then goes off.
If any faulty condition is found, advance to “ABS
Warning Light Does Not Come ON at Ignition Switch
ON” or “ABS Warning Light Comes ON Steady”.
EBD Warning Light (Brake Warning Light)
Check
S6RW0D4504003
NOTE
Perform this check on a level place.

1) Turn ignition switch ON with parking brake applied.
2) Check that EBD warning light (brake warning light)
(1) is turned ON.
3) Release parking brake with ignition switch ON and
check that EBD warning light (brake warning light)
goes off.
If it doesn’t go off, go to “EBD Warning Light (Brake
Warning Light) Comes ON Steady”.
11
I4RS0A450007-01
BRAKE
1
I4RS0A450008-01

Downloaded from www.Manualslib.com manuals search engine 4E-11 ABS:
DTC CheckS6RW0D4504004
1) Turn ignition switch to OFF position.
2) Connect SUZUKI scan tool to data link connector
(1).
Special tool
(A): SUZUKI scan tool
3) Turn ignition switch to ON position.
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.
NOTE
If SUZUKI scan tool can not communicate
ABS hydraulic unit / control module, perform
“Serial Data Link Circuit Check”.

5) After completing the check, turn ignition switch off
and disconnect SUZUKI scan tool from DLC.
DTC TableS6RW0D4504005
CAUTION!
Be sure to perform “ABS Check” before
starting diagnosis.

DTC ClearanceS6RW0D4504006
WARNING!
When performing a driving test, select a safe
place where there is neither any traffic nor
any traffic accident possibility and be very
careful during testing to avoid occurrence of
an accident.

After repair or replace malfunction part(s), clear all DTCs
by performing the following procedure or 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 to ON position.
3) Erase DTC according to instructions displayed on
scan tool. Refer to scan tool operator’s manual for
further derails.
NOTE
For DTC C1022, C1026, C1032, C1036 and
C1061, confirm that ABS warning light turns
off after performing Step 2 of “Test Driving”
under “ABS Check”, and then clear the DTCs.

4) After completing the clearance, turn ignition switch
OFF and disconnect scan tool from data link
connector.
5) Perform “Driving Test” (Step 2 of “ABS Check”) and
“DTC Check” and confirm that NO DTC is displayed
on scan tool. DTC (displayed on
SUZUKI scan tool)Diagnostic Items
NO DTC Normal
)C1013 Control module mismatch
) C1015 G sensor circuit (for 4WD model)
)C1016 Brake light switch
)C1021 RF
Wheel speed sensor circuit )C1025 LF
)C1031 RR
)C1035 LR
)C1022 RF
Wheel speed sensor or
encoder )C1026 LF
)C1032 RR
)C1036 LR
)C1033 Wheel speed sensor deviation
(A)
1
I5RW0A450007-01
)C1041 RF
Inlet solenoid )C1045 LF
)C1051 RR
)C1055 LR
)C1042 RF
Outlet solenoid )C1046 LF
)C1052 RR
)C1056 LR
) C1057Power supply voltage too high / too
low
) C1061 Pump motor circuit
) C1063Solenoid valve power supply driver
circuit
) C1071 Control module internal defect DTC (displayed on
SUZUKI scan tool)Diagnostic Items

Downloaded from www.Manualslib.com manuals search engine ABS: 4E-14
Circuit Description
ABS control module transmits indication ON signal of ABS warning light to combination meter in order to turn ABS
warning light ON. And then, combination meter turns ABS warning light ON.
If the ABS is in good condition, ABS control module transmits indication ON signal to combination meter in order to
turn ABS warning light ON at the ignition switch ON, keeps it ON for 2 seconds and then turns it OFF. If an abnormality
in the system is detected, ABS warning light is turned ON continuously by ABS control module. Also, it is turned ON
continuously by light driver module when ABS control module connector is disconnected.
Troubleshooting
G241 [D]
132 4 5 6 7 8 9 10111213141516
17 1918 20 2122 23 24 25 26 27 28 29 30 31 32E08 [C]
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
G05 [E]
1 2 3 4 765 8 9 10 11 14 15 16
36 34 33 32 3135 24 23 2122 28 27 2526 37 39 38 4018 17 13 12 19 20
30 29
WHTGRN
3
E08-2
E08-13REDWHT 5
4 13
9
E08-23
E08-26BLKBLK
67
BLK
REDWHTG241-7G241-10
G241-16
12V
E08-25E08-24
E08-9
WHT/REDWHT/BLU
GRN/ORN
9
2
1
14
G241-31
RED/BLK
8
REDWHT9
12V
12V
11
12G05-7
G05-1G05-3
G05-8
RED/BLK
RED/BLU
10
[B]
I6RW0D450002-02
[A]: Junction block with BCM 6. ABS warning light
[B]: Junction block without BCM 7. EBD warning light (brake warning light)
[C]: ABS control module connector (viewed from terminal side) 8. Light driver module
[D]: Combination meter connector (viewed from terminal side) 9. CAN driver
[E]: BCM (viewed from harness side) 10. BCM
1. Battery 11. Brake fluid level switch
2. Main fuse box 12. Parking brake switch
3. Ignition switch 13. ABS hydraulic unit / control module assembly
4. Junction block assembly 14. CAN junction connector
5. Combination meter
Step Action Yes No
1Warning light check
1) Turn ignition switch to ON position.
Do other warning lights come ON?Substitute a known-
good combination meter
and recheck. If warning
light remains OFF,
substitute a known-
good ABS hydraulic unit
/ control module
assembly and recheck.Go to Step 2.
2Fuse check
Is circuit fuse for combination meter in good condition?Go to Step 3. Replace fuse and check
for short circuit to
ground.

Downloaded from www.Manualslib.com manuals search engine 4E-15 ABS:
ABS Warning Light Comes ON SteadyS6RW0D4504009
Wiring Diagram
Refer to “Warning Diagram” under “ABS Warning Light Does Not Come ON at Ignition Switch ON”.
Circuit Description
Refer to “Circuit Description” under “ABS Warning Light Does Not Come ON at Ignition Switch ON”.
Troubleshooting 3Combination meter power source circuit check
1) Remove combination meter with ignition switch turned
OFF.
2) Check for proper connection to “RED/BLK” and “BLK”
wire of combination meter connector.
3) If OK then turn ON ignition switch and measure voltage
at “RED/BLK” wire of combination meter connector and
vehicle body ground.
Is it 10 - 14 V?Go to Step 4. Repair power source
circuit for combination
meter.
4Combination meter ground circuit check
1) Measure resistance between “BLK” wire of combination
meter connector and vehicle body ground.
Is resistance less than 2
Ω?Substitute a known-
good combination meter
and recheck.“BLK” circuit open or
high resistance. Step Action Yes No
Step Action Yes No
1DTC check
1) Perform diagnostic trouble code check.
Is there any DTC(s)?Go to Step 7 of “ABS
Check”.Go to Step 2.
2ABS hydraulic unit / control module assembly power
and ground circuit check
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.
3CAN communication line circuit check
1) Turn ignition switch to OFF position.
2) Disconnect connectors of all control modules
communicating by means of CAN.
3) Check for proper connection to CAN communication line
wire.
4) If OK then check CAN communication line circuit
between control modules for open, short and high
resistance.
Is each CAN communication line circuit in good condition?Substitute a known-
good combination meter
and recheck. If warning
light remains ON,
substitute a known-
good ABS hydraulic unit
/ control module
assembly and recheck.Repair circuit and
recheck.

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-17 ABS:
Serial Data Link Circuit CheckS6RW0D4504011
Wiring Diagram5CAN communication line circuit check
1) Turn ignition switch to OFF position.
2) Disconnect connectors of all control modules
communicating by means of CAN.
3) Check for proper connection to CAN communication line
wire.
4) If OK then check CAN communication line circuit
between control modules for open, short and high
resistance.
Is each CAN communication line circuit in good condition?Substitute a known-
good combination meter
and recheck. If EBD
warning light remains
OFF, substitute a
known-good BCM and/
or ABS hydraulic unit /
control module
assembly and recheck.Repair CAN
communication line
circuit. Step Action Yes No
11+BBBG
G1
12V
14BLU
REDWHTE08 [C]
1
2
3
4
5
6
7 12
13
14
15
16
17
18
19
20
21
228
9
10
11
23
24
25
26WHTGRN
3
E08-2
E08-13REDWHT 5
4 12
9
E08-23BLK
67
BLK
REDWHTG241-7G241-10
G241-16
12V
E08-25E08-24
E08-9
WHT/REDWHT/BLU
GRN/ORN
9
2
1
13
G241-31
RED/BLK
8
REDWHTREDWHT
9
10
E08-16 G04-4
G04-2
G04-1
G04-3 E04-1
E04-2
[D]
1 2 3 4 5 6 7 8 9 10 11
12 13 14 15 16 17
18 19 20 21 22G041 2 3 4 5 6 7
8 9 10 11 12 13 14E04
G241 [E]
132 4 5 6 7 8 9 10111213141516
17 1918 20 2122 23 24 25 26 27 28 29 30 31 32 [A]
I6RW0D450008-01

Downloaded from www.Manualslib.com manuals search engine ABS: 4E-22
DTC 1016: Brake Light SwitchS6RW0D4504014
Wiring Diagram
DTC Detecting Condition and Trouble Area
NOTE
When a vehicle is lifted up and its wheel(s) is turned, this DTC is set.
In such case, clear the DTC and check again.

Troubleshooting
WHTGRN
34 712V
E08-7
E08-9GRN/ORN
2
8
112V
GRN/WHT
WHTGRN[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
I7RW01450006-05
[A]: ABS control module connector (viewed from terminal side) 3. Ignition switch 6. Brake light
1. Battery 4. Junction block assembly 7. ABS hydraulic unit / control module assembly
2. Main fuse box 5. Brake light switch 8. To ECM and shift lock relay (A/T model)
DTC Detecting Condition Trouble Area
Brake light switch signal voltage becomes 4.8 – 8.0 V for
specified time.• Brake light circuit
• Brake light switch
• ABS control module
Step Action Yes No
1Was “ABS Check” performed?Go to Step 2. Go to “ABS Check”.
2Brake light operation check
1) Turn ignition switch to ON position and depress brake
pedal.
Does brake light turn ON?Go to Step 3. Repair brake light
switch, brake light and/
or brake light circuit and
recheck.
3Brake light switch signal circuit check
1) Disconnect ABS hydraulic unit / control module and
brake light switch connector with ignition switch turned
OFF.
2) Check for proper connection to “E08-7” terminal of ABS
hydraulic unit / control module and “GRN/WHT” wire
terminal of brake light switch.
3) If OK then measurer resistance between terminal of
“E08-7” and “GRN/WHT” wire terminal of brake light
switch connector.
Is it less than 2
Ω?Substitute a known-
good ABS hydraulic unit
/ control module and
recheck.“GRN/WHT” wire open
or high resistance.