2006 SUZUKI SX4 Sensors

Downloaded from www.Manualslib.com manuals search engine 4E-25 ABS:
DTC C1033: Wheel Speed Sensor DeviationS6RW0D4504016
Wiring Diagram
Refer to “Wiring Diagram” under “DTC C1021 / C1022 / C1025 / C1026 / C1031 / C1032 / C1035 / C1036: Wheel
Speed Sensor Circuit / Sensor or Encoder”.
DTC Detecting Condition and Trouble Area
DTC Troubleshooting DTC Detecting Condition Trouble Area
• Three or more sensor signals seem to be effected by
temporary failure suspicion at the same time.
• One wheel or more are controlled by ABS for more than
specified time.• Wheel speed sensor
• Wheel speed sensor circuit
• Wheel encoder
• ABS control module
• Tire (flat tire)
Step Action Yes No
1Was “ABS Check” performed?Go to Step 2. Go to “ABS Check”.
2Check DTC for ABS
1) Connect scan tool to DLC with ignition switch turned
OFF.
2) Turn ignition switch ON and check DTC for ABS.
Is DTC C1021, C1022, C1025, C1026, C1031, C1032,
C1035 and/or C1036 detected together?Go to “DTC C1021 /
C1022 / C1025 / C1026
/ C1031 / C1032 /
C1035 / C1036: Wheel
Speed Sensor Circuit /
Sensor or Encoder” and
recheck.Go to Step 3.
3Check tire condition
1) Check that tire pressure is specifications.
Are they in good condition?Go to Step 4. Replace tire or adjust
tire pressure and
recheck.
4Wheel speed sensor circuit check
1) Disconnect ABS hydraulic unit / control module
connector and all wheel speed sensor connectors with
ignition switch turned OFF.
2) Check for proper connection to ABS hydraulic unit /
control module connector and terminals of wheel speed
sensor.
3) If OK then check all wheel speed sensors circuit for
open, short and high resistance.
Are wheel speed sensor circuits in good condition?Go to Step 5. Repair circuit and
recheck.
5Wheel speed sensor check
1) Inspection all wheel speed sensors referring to “Front
and Rear Wheel Speed Sensor Inspection”.
Are they in good condition?Go to Step 6. Clean or replace.
6Wheel speed sensor encoder check
1) Inspection all wheel speed sensor encoders referring to
“Front Wheel Speed Sensor Encoder On-Vehicle
Inspection” and “Rear Wheel Speed Sensor Encoder
On-Vehicle Inspection”.
Are they in good condition?Go to Step 7. Clean or replace wheel
hub assembly.
7Wheel speed sensor signal check
1) Inspection all wheel speed sensors referring to “Front
and Rear Wheel Speed Sensor On-Vehicle Inspection”.
Are they in good condition?Substitute a known-
good wheel hub
assembly and recheck.
If DTC detected,
substitute a known-
good ABS hydraulic unit
/ control module and
recheck.Replace wheel speed
sensor and recheck.

Downloaded from www.Manualslib.com manuals search engine Power Assisted Steering System: 6C-5
Terminal Arrangement of P/S Control Module Coupler (Viewed from Harness Side)
Diagnostic Information and Procedures
EPS System CheckS6RW0D6304001
WARNING!
Carry out test drive in light traffic area to prevent an accident.

Refer to the following items for the details of each step.Terminal Circuit Terminal Circuit
E11-1Ignition switch signal for P/S control
moduleE11-13 —
E11-2 — E11-14 P/S active signal (idle up signal)
E11-3 — E11-15 —
E11-4 Vehicle speed signal E11-16 —
E11-5 “EPS” warning Light E11-17 —
E11-6 — E11-18 Torque sensor signal (Main)
E11-7 — E11-19 Ground for shield wire
E11-8 9 V power supply for torque sensor E11-20Reference sensor power supply for
torque sensor
E11-9 Ground for torque sensors E12-1 Motor output 1
E11-10 Torque sensor signal (Sub) E12-2 Motor output 2
E11-11Serial communication circuit for data
link connectorE13-1Main power supply for internal
memory and EPS motor
E11-12 Engine speed signal E13-2 Ground for P/S control module
Step Action Yes No
1) Customer complaint analysis
1) Perform customer complaint analysis referring to
“Customer Complaint Analysis”.
Was customer complaint analysis performed?Go to Step 2. Perform customer
complaint analysis.
2) DTC check, record and clearance
1) Check for DTC (including pending DTC) referring to
“DTC Check, Record and Clearance”.
Is there any DTC(s)?Print DTC or write them
down and clear them by
referring to “DTC
Clearance”, and go to
St ep 3 .Go to Step 4.
3) Visual inspection
1) Perform visual inspection referring to “Visual Inspection”.
Is there any faulty condition?Repair or replace
malfunction part, and go
to Step 11.Go to Step 5.
4) Visual inspection
1) Perform visual inspection referring to “Visual Inspection”.
Is there any faulty condition?Repair or replace
malfunction part, and go
to Step 11.Go to Step 8.
5) Trouble symptom confirmation
1) Confirm trouble symptom referring to “Trouble Symptom
Confirmation”.
Is trouble symptom identified?Go to Step 6. Go to Step 7.
6) Rechecking and record of DTC
1) Recheck for DTC referring to “DTC Check”.
Is there any DTC(s)?Go to Step 9. Go to Step 8.
7) Rechecking and record of DTC
1) Recheck for DTC referring to “DTC Check”.
Is there any DTC(s)?Go to Step 9. Go to Step 10.

Downloaded from www.Manualslib.com manuals search engine Power Assisted Steering System: 6C-31
Terminal Wire color Circuit Normal voltage Condition
E11-1 LT GRN/BLKIgnition switch signal for P/S
control module10 – 14 V Ignition switch ON
E11-2 — — — —
E11-3 — — — —
E11-4 PPL Vehicle speed signal*0 – 1 V
↑↓
8 – 14 V
(“Reference
waveform No.7”
under “Inspection
of BCM and Its
Circuits in
Section 10B”)• Ignition switch ON
• Front left tire turned quickly with right
tire locked
E11-5 GRY “EPS” warning light0 V Ignition switch ON
0 – 14 V Engine running
E11-6 — — — —
E11-7 — — — —
E11-8 GRN9 V power supply for torque
sensorAbout 9 V• Ignition switch ON
• Voltage between “E11-8” and “E11-9”
terminals
E11-9 BLK Ground for torque sensors — —
E11-10 WHT Torque sensor signal (Sub)About 2.5 – 4.0 V• Steering wheel with left turn
• Out put voltage varies linearly
depending on steering force
About 2.5 V Steering wheel at free
About 1.0 – 2.5 V• Steering wheel with right turn
• Out put voltage varies linearly
depending on steering force
E11-11 BLUSerial communication circuit for
data link connector——
E11-12 BRN Engine speed signal*0 – 1 V
↑↓
8 – 14 V
(“Reference
waveform No.24
and No.25” under
“Inspection of
ECM and Its
Circuits in
Section 1A”)Engine idling
E11-13 — — — —
E11-14 RED/BLU P/S active signal (idle up signal)About 12 V Ignition switch ON
0 – 1 VEngine idling and turned steering wheel
to the right or left until it stops
E11-15 — — — —
E11-16 — — — —
E11-17 — — — —
E11-18 YEL Torque sensor signal (Main)About 1.0 – 2.5 V• Steering wheel with left turn
• Out put voltage varies linearly
depending on steering force
About 2.5 V Steering wheel at free
About 2.5 – 4.0 V• Steering wheel with right turn
• Out put voltage varies linearly
depending on steering force
E11-19 GRY Ground for shield wire — —

Downloaded from www.Manualslib.com manuals search engine Air Conditioning System: Automatic Type 7B-57
SUN LOAD (W/m2): This parameter indicates the
amount of sunlight detected by sunload sensor.
MODE CONT SWITCH (Air flow selector position,
AUTO, FACE, B/L, FOOT, D/F, DEF): This
parameter indicates the selected position of air flow
selector.
FAN CONT SWITCH (Blower speed selector, AUTO,
OFF, 1st – 8th): This parameter indicates the
selected position of blower speed selector.
FAN DESIRE VOLT (Fan desired voltage, V): This
parameter indicates the consumption voltage of
blower motor.
AIR MIX POS SENSOR (Temperature control
actuator position sensor, V): This parameter
indicates the input signal from position sensor in
temperature control actuator.
MODE POS SENSOR (Air flow control actuator
position sensor, V): This parameter indicates the
input signal from position sensor in air flow control
actuator.
A/C CONT SIG (A/C control signal, ON, OFF): This
parameter indicates the state of A/C switch.BLOWER LOAD SIG (Blower fan load signal, ON,
OFF): ON: Position of blower speed selector is 1st
position or more.
OFF: Position of blower speed selector is OFF
position.
AIR INTAKE MODE (Air intake selector position,
AUTO, FRE, REC): This parameter indicates the
selected position of air intake selector.
REFRIGERANT PRESSURE (A/C refrigerant absolute
pressure, kPa): This parameter indicates the A/C
refrigerant absolute pressure calculated by ECM
A/C COMP CLUCH (A/C compressor magnet clutch,
ON, OFF): This parameter indicates the state of the
A/C compressor magnet clutch.
VEHICLE SPEED (km/h, mph): This parameter
indicates the vehicle speed calculated by ECM.
ENGINE TYPE (Engine type signal, J20, M16 or
M15): This parameter indicates the engine type
signal transmitted by ECM.
METER SPEC (Combination meter spec signal, EU,
UK, US, Canada, DOM): This parameter indicates
the combination meter spec signal transmitted by
combination meter.
Visual InspectionS6RW0D7224009
Check visually the following parts and systems.
DTC B1502: Inside Air Temperature Sensor Circuit MalfunctionS6RW0D7224010
Wiring DiagramInspection item Correction
• Refrigerant leakage and amount
• A/C pipe or hose disconnection,
looseness and
deterioration
• A/C compressor drive belt looseness and damageRefer to “Compressor Drive Belt Inspection
and Adjustment”.
• Battery fluid level and corrosion
of terminal
• Connectors of electric wire harness disconnection and
friction
• Fuses burning
• Parts installation and damage
• Other parts that can be checked visually
5V
G20
1 2 3 4 5 6 7 8 9 10 11 12 13 14
15 16 17 18 19 20 21 24 23 22 25 26 27 28 29 30
ORNORNPNK/BLKG20-10
21
3 [S]
[G]
G20-24
I7RW01722004-01
[S]: Inside air temperature sensor signal circuit 1. HVAC control module 3. To other sensors
[G]: Inside air temperature sensor ground circuit 2. Inside air temperature sensor

Downloaded from www.Manualslib.com manuals search engine Air Conditioning System: Automatic Type 7B-59
DTC B1503: Evaporator Temperature Sensor Circuit MalfunctionS6RW0D7224011
Wiring Diagram
DTC Detecting Condition and Trouble Area
DTC Troubleshooting
NOTE
When DTC B1502, B1504, B1511 and B1512 are indicated together, it is possible that sensor ground
circuit is open.

5V
G20
1 2 3 4 5 6 7 8 9 10 11 12 13 14
15 16 17 18 19 20 21 24 23 22 25 26 27 28 29 30
ORNORNWHT/BLKG20-9G20-24
[S]
[G] 2
31
I7RW01722005-01
[S]: Evaporator temperature sensor signal circuit 1. HVAC control module 3. To other sensors
[G]: Evaporator temperature sensor ground circuit 2. Evaporator temperature sensor
DTC Detecting Condition Trouble Area
Evaporator temperature sensor signal voltage is higher than or lower than
specified value for specified time continuously.• Evaporator temperature sensor
circuit
• Evaporator temperature sensor
• HVAC control module
Step Action Yes No
1Was “Air Conditioning System Check” performed?Go to Step 2. Go to “Air Conditioning
System Check”.
2Wire harness check
1) Turn ignition switch to OFF position.
2) Disconnect connectors from evaporator temperature
sensor and HVAC control module.
3) Check for proper connection to each signal circuit
terminal and ground circuit terminal of evaporator
temperature sensor and HVAC control module
connectors.
4) If OK, check that evaporator temperature sensor circuit
is as follows.
• Wiring harness resistance of each evaporator
temperature sensor signal circuit and ground circuit is
less than 3 Ω
• Insulation resistance between evaporator temperature
sensor signal circuit and vehicle body ground is
Infinity
• Circuit voltage of each evaporator temperature sensor
signal circuit and ground circuit is 0 - 1 V with ignition
switch turned ON
Are they good condition?Go to Step 3. Evaporator temperature
sensor signal circuit
and/or ground circuit are
open, short or high
resistance.

Downloaded from www.Manualslib.com manuals search engine 7B-60 Air Conditioning System: Automatic Type
DTC B1504: Sunload Sensor Circuit MalfunctionS6RW0D7224012
Wiring Diagram
DTC Detecting Condition and Trouble Area
NOTE
When DTC B1502, B1503, B1511 and B1512 are indicated together, it is possible that sensor ground
circuit is open.

3Evaporator temperature sensor reference voltage check
1) Connect connector to HVAC control module with ignition
switch turned OFF.
2) Turn ignition switch to ON position.
3) Measure voltage between signal terminal and ground
terminal of evaporator temperature sensor connector.
Is voltage 4.5 – 5.5 V?Go to Step 4. Substitute a known-
good HVAC control
module and recheck.
4Evaporator temperature sensor check
1) Check evaporator temperature sensor for performance
referring to “Evaporator Temperature Sensor
Inspection”.
Is it in good condition?Substitute a known-
good HVAC control
module and recheck.Replace evaporator
temperature sensor. Step Action Yes No
G20
1 2 3 4 5 6 7 8 9 10 11 12 13 14
15 16 17 18 19 20 21 24 23 22 25 26 27 28 29 30
PNK
ORNORN
G20-25
G20-24
2
[S]
[G]15V
3
I7RW01722006-01
[S]: Sunload sensor signal circuit 1. HVAC control module 3. To other sensors
[G]: Sunload sensor ground circuit 2. Sunload sensor
DTC Detecting Condition Trouble Area
• Sunload sensor signal voltage is higher than or lower than specified value
for specified time continuously.
• Without sunlight• Sunload sensor circuit
• Sunload sensor
• HVAC control module

Downloaded from www.Manualslib.com manuals search engine Air Conditioning System: Automatic Type 7B-61
DTC Troubleshooting
DTC B1511: Temperature Control Actuator (Position Sensor) and/or Its Circuit MalfunctionS6RW0D7224013
Wiring DiagramStep Action Yes No
1Was “Air Conditioning System Check” performed?Go to Step 2. Go to “Air Conditioning
System Check”.
2Wire harness check
1) Turn ignition switch to OFF position.
2) Disconnect connectors from sunload sensor and HVAC
control module.
3) Check for proper connection to each signal circuit
terminal and ground circuit terminal of sunload sensor
and HVAC control module connectors.
4) If OK, check that sunload sensor circuit is as follows.
• Wiring harness resistance of each sunload sensor
signal circuit and ground circuit is less than 3 Ω
• Insulation resistance of each sunload sensor signal
circuit and ground circuit between sunload sensor
connector and vehicle body ground is Infinity
• Circuit voltage of each sunload sensor signal circuit
and ground circuit is 0 – 1 V with ignition switch turned
ON
Are they in good condition?Go to Step 3. Sunload sensor power
supply circuit and/or
signal circuit are open,
short or high resistance.
3Sunload sensor power supply voltage check
1) Connect connector to HVAC control module with ignition
switch turned OFF.
2) Turn ignition switch to ON position.
3) Measure voltage between signal terminal and ground
terminal of sunload sensor connector.
Is voltage 4.5 – 5.5 V?Go to Step 4. Substitute a known-
good HVAC control
module and recheck.
4Sunload sensor check
1) Check sunload sensor for performance referring to
“Sunload Sensor Inspection”.
Is it in good condition?Substitute a known-
good HVAC control
module and recheck.Replace sunload
sensor.
G20
1 2 3 4 5 6 7 8 9 10 11 12 13 14
15 16 17 18 19 20 21 24 23 22 25 26 27 28 29 30
GRY/BLUGRY/RED
5V5V
12V
ORN
WHT
YEL
G20-12
G20-27
G20-24
G20-1G20-2
2
[P]
[S]3
4
[G]
1
I6RW0C722004-01
[P]: Position sensor power supply circuit [G]: Position sensor ground circuit 2. Temperature control actuator 4. To other sensors
[S]: Position sensor signal circuit 1. HVAC control module 3. To air flow control actuator

Downloaded from www.Manualslib.com manuals search engine Air Conditioning System: Automatic Type 7B-63
DTC B1512: Air flow Control Actuator (Position Sensor) and/or Its Circuit MalfunctionS6RW0D7224014
Wiring Diagram
DTC Detecting Condition and Trouble Area4Temperature control actuator check
1) Check position sensor of temperature control actuator
for performance referring to “Temperature Control
Actuator and Its Circuit Inspection”.
Is it in good condition?Substitute a known-
good HVAC control
module and recheck.Replace temperature
control actuator.
5Position sensor of temperature control actuator power
supply voltage check
1) Turn ignition switch to OFF position.
2) Disconnect connector from air flow control actuator.
3) Turn ignition switch to ON position.
4) Measure voltage between.
• Position sensor power supply terminal and position
sensor ground terminal of temperature control
actuator connector
• Position sensor signal terminal and position sensor
ground terminal of temperature control actuator
connector
Is voltage 4.5 – 5.5 V?Check air flow control
actuator and its circuit.Substitute a known-
good HVAC control
module and recheck. Step Action Yes No
G20
1 2 3 4 5 6 7 8 9 10 11 12 13 14
15 16 17 18 19 20 21 24 23 22 25 26 27 28 29 30
BRN/YELBRN/WHT
5V5V
12V
ORN
WHTG20-12
G20-28
G20-24
G20-15G20-16
WHT/BLU 2
3
4
[P]
[G][S]1
I6RW0C722005-01
[P]: Position sensor power supply circuit [G]: Position sensor ground circuit 2. Air flow control actuator 4. To other sensors
[S]: Position sensor signal circuit 1. HVAC control module 3. To temperature control actuator
DTC Detecting Condition Trouble Area
Air flow control actuator position sensor signal voltage is higher than or lower
than specified value for specified time continuously.• Air flow control actuator circuit
• Air flow control actuator
• HVAC control module