2006 SUZUKI SX4 Engine Cooling System

Downloaded from www.Manualslib.com manuals search engine 1F-11 Engine Cooling System:
Installation
1) Install belt (1) to water pump pulley (2), crankshaft
pulley (3) and generator pulley (4).
2) Adjust belt tension referring to “Water Pump /
Generator Drive Belt Tension Inspection and
Adjustment”.
3) If vehicle equipped with A/C, install compressor drive
belt referring to “Compressor Drive Belt Removal
and Installation in Section 7B” or “Compressor Drive
Belt Removal and Installation in Section 7B”.
4) Connect negative cable at battery.
Water Pump Removal and InstallationS6RW0D1606016
Removal
1) Disconnect negative cable at battery.
2) Drain coolant.
3) Remove water pump / generator drive belt referring
to “Water Pump / Generator Drive Belt Removal and
Installation”.
4) Remove water pump pulley.
5) Remove water pump assembly (1).Installation
1) Apply sealant to mating surface of water pump (1) as
shown in figure.
“A”: Water tight sealant 99000–31250 (SUZUKI
Bond No.1207F)
Sealant quantity (to mating surface of water
pump)
Width “a”: 3 mm (0.12 in.)
Height “b”: 2 mm (0.08 in.)
2) Install water pump assembly (1) to cylinder block
and tighten bolts and nut to specified torque.
Tightening torque
Water pump bolt and nut (a): 25 N·m (2.5 kgf-m,
18.0 lb-ft)
3) Install water pump pulley.
4) Install water pump / generator drive belt referring to
“Water Pump / Generator Drive Belt Removal and
Installation”.
5) Install A/C compressor belt referring to “Compressor
Drive Belt Removal and Installation in Section 7B” or
“Compressor Drive Belt Removal and Installation in
Section 7B”.
6) Refill cooling system referring to Step 7) to 17) of
“Cooling System Flush and Refill”.
7) Connect negative cable at battery.
8) Check each part for leakage.
2
1
34I5RW0C160009-01
I5RW0C160011-01
I3RM0A160016-01
I5RW0C160010-01

Downloaded from www.Manualslib.com manuals search engine Engine Cooling System: 1F-12
Water Pump InspectionS6RW0D1606017
CAUTION!
Do not disassemble water pump.
If any repair is required on pump, replace it
as assembly.

Rotate water pump by hand to check for smooth
operation. If pump does not rotate smoothly or makes
abnormal noise, replace it.
Specifications
Tightening Torque SpecificationsS6RW0D1607001
NOTE
The specified tightening torque is also described in the following.
“Cooling System Components”

Reference:
For the tightening torque of fastener not specified in this section, refer to “Fasteners Information in Section 0A”.
Special Tools and Equipment
Recommended Service MaterialS6RW0D1608001
I2RH0B160019-01
Fastening partTightening torque
Note
N⋅mkgf-mlb-ft
Radiator support bracket bolt 33 3.3 24.0)
Generator bracket bolt 25 2.5 18.0)
Generator pivot bolt 50 5.0 36.0)
Generator adjusting bolt Tighten 7.0 N⋅m (0.7 kgf-m, 5.0 lb-ft) by the
specified procedure.)
Water pump bolt and nut 25 2.5 18.0)
Material SUZUKI recommended product or Specification Note
Water tight sealant SUZUKI Bond No.1207F P/No.: 99000–31250)

Downloaded from www.Manualslib.com manuals search engine Starting System: 1I-2
Condition Possible cause Correction / Reference Item
Motor not running (No
operating sound of
magnetic switch)Transmission range sensor is not in P or
N, or not adjusted (A/T model)Shift in P or N, or adjust sensor. (A/T model)
Battery run downRecharge battery.
Battery voltage too low due to battery
deteriorationReplace battery.
Poor contact in battery terminal
connectionRetighten or replace.
Loose grounding cable connectionRetighten.
Fuse set loose or blown offTighten or replace.
Poor contacting action of ignition switch
and magnetic switchReplace.
Lead wire coupler loose in placeRetighten.
Open-circuit between ignition switch and
magnetic switchRepair.
Open-circuit in pull-in coilReplace magnetic switch.
Brushes are seating poorly or worn
downRepair or replace.
Poor sliding of plunger and/or pinionRepair.
Faulty starting motor control relay“Main Relay, Fuel Pump Relay, Starting Motor
Control Relay, Throttle Actuator Control Relay
and Radiator Cooling Fan Relay Inspection in
Section 1C”.
Faulty ECM and its circuit“Inspection of ECM and Its Circuits in Section
1A”.
Motor not running
(Operating sound of
magnetic switch heard)Battery run downRecharge battery.
Battery voltage too low due to battery
deteriorationReplace battery.
Loose battery cable connectionsRetighten.
Burnt main contact point, or poor
contacting action of magnetic switchReplace magnetic switch.
Brushes are seating poorly or worn
downRepair or replace.
Weakened brush springReplace.
Burnt commutatorReplace armature.
Layer short-circuit of armatureReplace.
Crankshaft rotation obstructedRepair.
Starting motor running
but too slow (small
torque) (If battery and
wiring are satisfactory,
inspect starting motor)Insufficient contact of magnetic switch
main contactsReplace magnetic switch.
Layer short-circuit of armatureReplace.
Disconnected, burnt or worn
commutatorRepair commutator or replace armature.
Worn brushesReplace brush.
Weakened brush springsReplace spring.
Burnt or abnormally worn end bushReplace bush.
Starting motor running,
but not cranking engineWorn pinion tipReplace over-running clutch.
Poor sliding of over-running clutchRepair.
Over-running clutch slippingReplace over-running clutch.
Worn teeth of ring gearReplace flywheel (M/T model) or drive plate (A/
T model).
NoiseAbnormally worn bushReplace bush.
Worn pinion or worn teeth of ring gearReplace over-running clutch, flywheel (M/T
model) or drive plate (A/T model).
Poor sliding of pinion (failure in return
movement)Repair or replace.
Worn internal or planetary gear teethReplace.
Lack of oil in each partLubricate.

Downloaded from www.Manualslib.com manuals search engine Automatic Transmission/Transaxle: 5A-5
Specifications
Item Specifications
Torque converterTy p e
Stall torque ratio3-element, 1-step, 2-phase type (with TCC (lock-up)
mechanism)
1.9 – 2.1
Oil pumpTy p e
Drive systemInternal involute gear type oil pump (non crescent type)
Engine driven
Gear change
deviceType Forward 4-step, reverse 1-step planetary gear type
Shift position“P” range Gear in neutral, output shaft fixed, engine start
“R” range Reverse
“N” range Gear in neutral, engine start
“D” range Forward 1st ↔ 2nd ↔ 3rd ↔ 4th automatic gear
change
“3” rangeForward 1st ↔ 2nd ↔ 3rd ← 4th automatic gear
change
“2” range Forward 1st ↔ 2nd ← 3rd automatic gear change
“L” rangeForward 1st ← 2nd ← 3rd reduction, and fixed at 1st
gear
Gear
ratio1st 2.875 Number of teeth Front sun gear: 24
2nd 1.568 Rear sun gear: 30
3rd 1.000 Long planet pinion: 20
4th (overdrive gear) 0.697 Short planet pinion: 19
Reverse (reverse gear) 2.300 Ring gear: 69
Control elementsWet type multiple-disc clutch... 3 sets
Wet type multiple-disc brake... 3 sets
One-way clutch... 2 sets
Reduction gear ratio 1.023
Final gear reduction ratio 4.277
Lubrication Lubrication system Force feed system by oil pump
Cooling Cooling system Radiator assisted cooling (water-cooled)
Fluid used SUZUKI ATF 3317 or Mobil ATF 3309

Downloaded from www.Manualslib.com manuals search engine Table of Contents 7- i
7
Section 7
CONTENTS
HVAC
Precautions ................................................. 7-1
Precautions............................................................. 7-1
Precautions on HVAC ........................................... 7-1
Heater and Ventilation............................. 7A-1
General Description ............................................. 7A-1
Heater and Ventilation Construction ................... 7A-1
Schematic and Routing Diagram ........................ 7A-2
Heater and Ventilation Wiring Circuit Diagram .... 7A-2
Component Location ........................................... 7A-2
Electronic Control System Components
Location ............................................................ 7A-2
Diagnostic Information and Procedures ............ 7A-3
Heater and Ventilation Symptom Diagnosis........ 7A-3
Repair Instructions .............................................. 7A-4
HVAC Unit Components ..................................... 7A-4
HVAC Unit Removal and Installation (Non-A/
C) ...................................................................... 7A-4
Blower Motor Removal and Installation............... 7A-4
Blower Motor Inspection ..................................... 7A-4
Blower Motor Resistor Removal and
Installation ......................................................... 7A-5
Blower Motor Resistor Inspection ....................... 7A-5
Blower Motor Relay Inspection ........................... 7A-6
HVAC Control Unit Components ......................... 7A-6
HVAC Control Unit Removal and Installation ...... 7A-7
Blower Speed Selector Inspection ...................... 7A-9
Air Intake Selector Inspection ............................. 7A-9
Air Intake Control Actuator Removal and
Installation ......................................................... 7A-9
Air Intake Control Actuator Inspection .............. 7A-10
Center Ventilation Louver Removal and
Installation ....................................................... 7A-11
Side Ventilation Louver Removal and
Installation ....................................................... 7A-11
Rear Duct Removal and Installation (If
Equipped)........................................................ 7A-12
HVAC Air Filter Removal and Installation (If
Equipped)........................................................ 7A-12
HVAC Air Filter Inspection (If Equipped) ........... 7A-12
Air Conditioning System......................... 7B-1
Manual Type ............................................................ 7B-1
Precautions........................................................... 7B-1A/C System Caution ............................................ 7B-1
Precautions on Servicing A/C System ................ 7B-1
General Description .............................................7B-2
Sub-Cool A/C System Description ...................... 7B-2
Manual A/C Electronic Input Output Table .......... 7B-3
A/C Operation Description at ECM ..................... 7B-3
Schematic and Routing Diagram ........................7B-4
A/C System Air Flow Diagram............................. 7B-4
A/C System Wiring Diagram ............................... 7B-5
Component Location ...........................................7B-6
A/C System Major Components Location ........... 7B-6
Electronic Control System Components
Location............................................................. 7B-7
Diagnostic Information and Procedures ............7B-8
A/C System Performance Inspection .................. 7B-8
Trouble Diagnosis for Abnormal Pressure ........ 7B-11
A/C System Inspection at ECM ......................... 7B-12
A/C System Symptom Diagnosis ...................... 7B-13
Abnormal Noise Symptom Diagnosis of A/C
System ............................................................ 7B-15
Repair Instructions ............................................7B-17
Operation Procedure for Refrigerant Charge .... 7B-17
Condenser Cooling Fan Removal and
Installation ....................................................... 7B-22
Condenser Cooling Fan Inspection ................... 7B-23
Condenser Assembly On-Vehicle Inspection .... 7B-23
Condenser Assembly Removal and
Installation ....................................................... 7B-23
Desiccant Removal and Installation .................. 7B-24
HVAC Unit Components ................................... 7B-25
HVAC Unit Removal and Installation ................ 7B-26
Evaporator Inspection ....................................... 7B-27
Evaporator Temperature Sensor Removal
and Installation ................................................ 7B-27
Evaporator Temperature Sensor Inspection ..... 7B-28
Expansion Valve Removal and Installation ....... 7B-28
Expansion Valve Inspection .............................. 7B-28
A/C Refrigerant Pressure Sensor and Its
Circuit Inspection............................................. 7B-29
A/C Refrigerant Pressure Sensor Removal
and Installation ................................................ 7B-29
A/C Switch Inspection ....................................... 7B-29
A/C System Relay Inspection............................ 7B-30
Compressor Drive Belt Inspection and
Adjustment ...................................................... 7B-30

Downloaded from www.Manualslib.com manuals search engine 7-ii Table of Contents
Compressor Drive Belt Removal and
Installation ....................................................... 7B-31
Compressor Assembly Removal and
Installation ....................................................... 7B-31
Compressor Assembly Components................. 7B-32
Magnet Clutch Inspection.................................. 7B-32
Magnet Clutch Removal and Installation........... 7B-33
Thermal Switch Inspection ................................ 7B-35
Thermal Switch Removal and Installation ......... 7B-35
Relief Valve Inspection...................................... 7B-36
Relief valve Removal and Installation ............... 7B-36
Specifications .....................................................7B-37
Tightening Torque Specifications ...................... 7B-37
Special Tools and Equipment ...........................7B-37
Recommended Service Material ....................... 7B-37
Special Tool ...................................................... 7B-37
Automatic Type .....................................................7B-38
Precautions.........................................................7B-38
A/C System Caution .......................................... 7B-38
Precautions in Diagnosing Trouble ................... 7B-38
Precautions on Servicing A/C System .............. 7B-38
General Description ...........................................7B-39
Auto A/C System Description ............................ 7B-39
HVAC Control Description................................. 7B-40
Sub-Cool A/C System Description .................... 7B-40
On-Board Diagnostic System Description ......... 7B-41
Schematic and Routing Diagram ......................7B-41
A/C System Air Flow Diagram........................... 7B-41
A/C System Wiring Diagram ............................. 7B-42
Component Location .........................................7B-43
A/C System Major Components Location ......... 7B-43
Electronic Control System Components
Location .......................................................... 7B-44
Diagnostic Information and Procedures ..........7B-45
Air Conditioning System Check......................... 7B-45
A/C System Symptom Diagnosis ...................... 7B-47
Abnormal Noise Symptom Diagnosis of A/C
System ............................................................ 7B-49
DTC Check........................................................ 7B-49
DTC Clearance ................................................. 7B-51
DTC Table ......................................................... 7B-52
Fail-Safe Table .................................................. 7B-54
Scan Tool Data ................................................. 7B-55
Visual Inspection ............................................... 7B-57
DTC B1502: Inside Air Temperature Sensor
Circuit Malfunction .......................................... 7B-57
DTC B1503: Evaporator Temperature Sensor
Circuit Malfunction .......................................... 7B-59
DTC B1504: Sunload Sensor Circuit
Malfunction ...................................................... 7B-60
DTC B1511: Temperature Control Actuator
(Position Sensor) and/or Its Circuit
Malfunction ...................................................... 7B-61
DTC B1512: Air flow Control Actuator
(Position Sensor) and/or Its Circuit
Malfunction ...................................................... 7B-63
DTC B1513: Temperature Control Actuator
(Motor) and/or Its Circuit Malfunction .............. 7B-65DTC B1514: Air Flow Control Actuator (Motor)
and/or Its Circuit Malfunction........................... 7B-67
DTC B1520 / B1521 / B1522: Temperature /
Blower Speed / Air Flow Selector
Malfunction ...................................................... 7B-68
DTC B1541: Back-Up Power Supply Circuit
Malfunction ...................................................... 7B-69
DTC B1546: A/C Refrigerant Pressure
Malfunction ...................................................... 7B-70
DTC B1551: Serial Communication Circuit
Malfunction ...................................................... 7B-70
DTC B1552: HVAC Control Module Check
Sum Error ........................................................ 7B-72
DTC B1553: CAN Communication Circuit
Malfunction ...................................................... 7B-72
DTC B1557: VSS Signal Failure ....................... 7B-73
DTC B1561: ECT Signal Failure ....................... 7B-73
DTC B1562: Outside Air Temperature Signal
Failure ............................................................. 7B-74
DTC B1563: A/C Refrigerant Pressure Signal
Failure ............................................................. 7B-74
DTC B1570: Engine Type Signal Failure .......... 7B-75
DTC B1571: Combination Meter Spec Signal
Failure ............................................................. 7B-75
Inspection of HVAC Control Module and Its
Circuit .............................................................. 7B-76
A/C System Inspection at ECM ......................... 7B-79
Repair Instructions ............................................7B-79
Operation Procedure for Refrigerant Charge .... 7B-79
HVAC Unit Components ................................... 7B-80
HVAC Unit Removal and Installation ................ 7B-81
Temperature Control Actuator Removal and
Installation ....................................................... 7B-81
Temperature Control Actuator and Its Circuit
Inspection ........................................................ 7B-81
Air Flow Control Actuator Removal and
Installation ....................................................... 7B-83
Air Flow Control Actuator and Its Circuit
Inspection ........................................................ 7B-83
Air Intake Actuator Removal and Installation .... 7B-84
Air Intake Actuator Inspection ........................... 7B-84
Actuator Linkage Inspection.............................. 7B-84
Blower Motor Controller Removal and
Installation ....................................................... 7B-84
Blower Motor Controller Inspection ................... 7B-85
HVAC Control Module Removal and
Installation ....................................................... 7B-85
Sunload Sensor Removal and Installation ........ 7B-85
Sunload Sensor Inspection ............................... 7B-86
Outside Air Temperature Sensor Removal
and Installation ................................................ 7B-86
Outside Air Temperature Sensor Inspection ..... 7B-86
Inside Air Temperature Sensor Removal and
Installation ....................................................... 7B-86
Inside Air Temperature Sensor Inspection ........ 7B-86
Condenser Cooling Fan Relay Inspection......... 7B-87
Condenser Cooling Fan Removal and
Installation ....................................................... 7B-87
Condenser Cooling Fan Inspection ................... 7B-87
Condenser Assembly On-Vehicle Inspection .... 7B-87

Downloaded from www.Manualslib.com manuals search engine 7A-4 Heater and Ventilation:
Repair Instructions
HVAC Unit ComponentsS6RW0D7106001
For non-A/C and manual A/C, refer to “HVAC Unit
Components in Section 7B”.
For auto A/C, refer to “HVAC Unit Components in
Section 7B”.
HVAC Unit Removal and Installation (Non-A/C)S6RW0D7106002
For manual A/C and auto A/C, refer to “HVAC Unit
Removal and Installation in Section 7B”.
Removal
1) Drain engine coolant referring to “Cooling System
Draining in Section 1F”, and then disconnect heater
hoses from HVAC unit.
2) Remove cowl top cover from vehicle body referring
to “Cowl Top and Front Lower Crossmember
Components in Section 9K”.
3) Remove instrument panel from vehicle body
referring to “Instrument Panel Removal and
Installation in Section 9C”.
4) Remove HVAC unit (1) from vehicle body by
removing nuts (2).Installation
Reverse removal procedure noting the following
instructions.
• Be careful not to catch any cable and wiring harness
in inappropriate position.
• Adjust control cables of HVAC control unit referring to
“HVAC Control Unit Removal and Installation”.
• Refill cooling system with coolant referring to “Cooling
System Flush and Refill in Section 1F”.
Blower Motor Removal and InstallationS6RW0D7106003
Removal
1) Disconnect negative (–) cable from battery.
2) Disconnect connector (1) from blower motor (2).
3) Remove blower motor (2) from HVAC unit as follows.
a) Remove screws (4).
b) Release tub (3) to arrow direction.
c) Hold Step b) and turn blower motor (2) to arrow
direction.
Installation
Reverse removal procedure.
Blower Motor InspectionS6RW0D7106004
• Check blower motor for resistance between two
terminals as shown.
If there is no continuity, replace blower motor.
2
2
2
1
I7RW01710003-01
3
2
b)
c)
1
4
4I7RW01710004-02
I7RW01710005-01

Downloaded from www.Manualslib.com manuals search engine Air Conditioning System: Manual Type 7B-3
Manual A/C Electronic Input Output TableS6RW0D7211002
A/C Operation Description at ECMS6RW0D7211003
ECM controls the A/C compressor relay and condenser cooling fan relay according to signals from HVAC control unit,
A/C refrigerant pressure sensor, ECT sensor and evaporator temperature sensor. The A/C switch ON signal from
HVAC control unit is transmitted to ECM through BCM. For CAN communication system, refer to “CAN
Communication System Description in Section 1A”.
ECM turns ON the A/C compressor relay when the vehicle state satisfy conditions described below.
• A/C switch ON signal is inputted from HVAC control unit
• A/C refrigerant pressure is within specified range
• Evaporator temperature is within specified range
• Engine speed is within specified range
• Engine coolant temperature is lower than specified value
• Throttle opening is lower than specified value
• Vehicle is not in either state of starting or quick acceleration
• ECT sensor malfunction is not detected
• A/C refrigerant pressure sensor malfunction is not detected
Condenser Cooling Fan Relay Control
ECM turn ON the condenser cooling fan relay at the same time when ECM turn ON the A/C compressor relay.
ECM
BCM
A/C switch Air intake selector
A/C refrigerant pressure sensor
A/C evaporator temperature sensorCompressor relay
ECT sensor
Condensor cooling fan relay
*
Wheel speed sensor (VSS)
HVAC control unit
Blower motor Blower motor resistor
Air intake control actuator
*Blower speed selector
ABS control module
I6RW0C721001-01
*: CAN communication