2006 SUZUKI SX4 Engine Cooling System

Downloaded from www.Manualslib.com manuals search engine 1A-34 Engine General Information and Diagnosis:
)
U*P0420Catalyst system efficiency below
thresholdOutput waveforms of HO2S-1 and HO2S-2 are similar.2 driving
cycles
)
U*P0443Evaporative emission system purge
control valve circuitMonitor signal of EVAP canister purge valve is different
from command signal. (circuit open or shorted to ground)2 driving
cycles
) P0462 Fuel level sensor circuit lowCircuit voltage of fuel level sensor is less than
specification.—
) P0463 Fuel level sensor circuit highCircuit voltage of fuel level sensor is more than
specification.—
)
U*P0480Fan 1 control circuitMonitor signal of radiator cooling fan relay is different from
command signal.1 driving
cycle
)
UP0481Fan 2 control circuitMonitor signal of A/C condenser cooling fan relay is
different from command signal.—
) *P0500 Vehicle speed sensor No VSS signal during fuel cut for specified time or longer.2 driving
cycles
) P0532A/C refrigerant pressure sensor
circuit lowOutput voltage of A/C refrigerant pressure sensor is less
than specification.—
) P0533A/C refrigerant pressure sensor
circuit highOutput voltage of A/C refrigerant pressure sensor is more
than specification.—
) *P0601Internal control module memory
check sum errorData write error or check sum error.1 driving
cycle
) P0602 Control module programming error Data programming error.1 driving
cycle
) *P0607 Control module performance Data programming error.1 driving
cycle
)
U*P0616Starter relay circuit lowStarter signal is low voltage even though engine is started
with vehicle at stop.2 driving
cycles
)
U*P0617Starter relay circuit highStarter signal is high voltage for specified time while
engine is running.2 driving
cycles
) *P1510
ECM backup power supply
malfunctionBackup power voltage is out of specification after starting
engine.1 driving
cycle
) *P2101Throttle actuator control motor
circuit range/performanceMonitor signal of throttle actuator output (duty output) is
inconsistent with throttle actuator control command.1 driving
cycle
) *P2102Throttle actuator control motor
circuit lowPower supply voltage of throttle actuator control circuit is
lower than specification even if throttle actuator control
relay turned on.1 driving
cycle
) *P2103Throttle actuator control motor
circuit highPower supply voltage of throttle actuator control circuit is
higher than specification even if throttle actuator control
relay turned off.1 driving
cycle
) *P2111Throttle actuator control system –
stuck openThrottle valve default opening is greater than 8° from
complementary closed position when diagnosing throttle
valve at ignition switch turned OFF.1 driving
cycle
) *P2119Throttle actuator control throttle
body range/performanceDifference between actual throttle valve opening angle
and opening angle calculated by ECM is more than
specification.1 driving
cycle
) *P2122Pedal position sensor (main) circuit
low inputOutput voltage of pedal position sensor (main) is lower
than specification.1 driving
cycle
) *P2123Pedal position sensor (main) circuit
high inputOutput voltage of pedal position sensor (main) is higher
than specification.1 driving
cycle
) *P2127Pedal position sensor (sub) circuit
low inputOutput voltage of pedal position sensor (sub) is lower
than specification.1 driving
cycle
) *P2128Pedal position sensor (sub) circuit
high inputOutput voltage of pedal position sensor (sub) is higher
than specification.1 driving
cycle
) *P2135Throttle position sensor (main / sub)
voltage correlationDifference between the opening angle based on throttle
position sensor (main) and the opening angle based on
throttle position sensor (sub) is more than specification.1 driving
cycle DTC No. Detecting itemDetecting condition
(DTC will set when detecting:)MIL

Downloaded from www.Manualslib.com manuals search engine 1A-36 Engine General Information and Diagnosis:
For Vehicle Equipped with A/TS6RW0D1104081
NOTE
There are two types of OBD system depending on the vehicle specification.
For identification, refer to “Precaution on On-Board Diagnostic (OBD) System”.

When using CAN communication OBD generic scan tool, not only the previous star (*) marked ECM DTC(s) but also
the following DTC(s) is displayed on CAN communication OBD generic scan tool simultaneously.
Fail-Safe TableS6RW0D1104006
When any of the following DTCs is detected, ECM enters fail-safe mode as long as malfunction continues to exist but
that mode is cancelled when ECM detects normal condition after that. DTC No. Detecting itemDetecting condition
(DTC will set when detecting)
P0705 Transmission range sensor circuit malfunction (PRNDL input)
Refer to “DTC Table in Section 5A”. P0707 Transmission range sensor circuit low
P0711Transmission fluid temperature sensor “A” circuit range/
performance
P0712 Transmission fluid temperature sensor circuit low
P0713 Transmission fluid temperature sensor circuit high
P0717 Input/Turbine speed sensor circuit no signal
P0722 Output speed sensor (VSS) circuit no signal
P0741 Torque converter clutch circuit performance or stuck off
P0742 Torque converter clutch circuit stuck on
P0751 Shift solenoid-A (No.1) performance or stuck off
P0752 Shift solenoid-A (No.1) stuck on
P0756 Shift solenoid-B (No.2) performance or stuck off
P0757 Shift solenoid-B (No.2) stuck on
P0787 Shift/Timing solenoid control circuit low
P0788 Shift/Timing solenoid control circuit high
P0961 Pressure control solenoid “A” control circuit range/performance
P0962 Pressure control solenoid control circuit low
P0963 Pressure control solenoid control circuit high
P0973 Shift solenoid-A (No.1) control circuit low
P0974 Shift solenoid-A (No.1) control circuit high
P0976 Shift solenoid-B (No.2) control circuit low
P0977 Shift solenoid-B (No.2) control circuit high
P1702 Internal control module memory check sum error
P1723 Range select switch malfunction
P1878 Torque converter clutch shudder
P2762Torque converter clutch (TCC) pressure control solenoid control
circuit range/performance
P2763Torque converter clutch pressure control solenoid control circuit
high
P2764Torque converter clutch pressure control solenoid control circuit
low
U0100 Lost communication with ECM/PCM “A”
DTC No. Detected item Fail-safe operation
) P0102 Mass air flow circuit low input • ECM controls injector drive time (fuel injection
volume) according to throttle valve opening
(closed throttle position or not).
• ECM stops EGR control. ) P0103 Mass air flow circuit high input
) P0112 Intake air temperature sensor circuit low ECM controls actuators assuming that intake air
temperature is 20 °C (68 °F). ) P0113 Intake air temperature sensor circuit high
) P0117 Engine coolant temperature circuit low • ECM controls actuators assuming that engine
coolant temperature is 80 °C (176 °F).
• ECM operates radiator cooling fan. ) P0118 Engine coolant temperature circuit high

Downloaded from www.Manualslib.com manuals search engine 1A-38 Engine General Information and Diagnosis:
Scan Tool DataS6RW0D1104007
As the data values are standard values estimated on the basis of values obtained from the normally operating vehicles
by using a scan tool, use them as reference values. Even when the vehicle is in good condition, there may be cases
where the checked value does not fall within each specified data range. Therefore, judgment as abnormal should not
be made by checking with these data alone.
Also, conditions that can be checked by the scan tool are those detected by ECM and output from ECM as commands
and there may be cases where the engine or actuator is not operating (in the condition) as indicated by the scan tool.
Be sure to use the timing light to check the ignition timing.
NOTE
• There are two types of OBD system depending on the vehicle specification.
For identification, refer to “Precaution on On-Board Diagnostic (OBD) System”.
• With the CAN communication generic scan tool, only star (*) marked data in the following table can
be read.
• When checking the data with the engine running at idle or racing, be sure to shift M/T gear to the
neutral position and A/T gear to the “Park” position and pull the parking brake fully. Also, if nothing
or “no load” is indicated, turn OFF A/C (if equipped with A/C), all electric loads, P/S and all the other
necessary switches.

Scan tool data Vehicle conditionNormal condition /
reference values
*) COOLANT TEMP
(ENGINE COOLANT TEMP.)At specified idle speed after warming up 80 – 100 °C, 176 – 212 °F
*) INTAKE AIR TEMP. At specified idle speed after warming up–5 °C (23 °F) + environmental
temp. to 40 °C (104 °F) +
environmental temp.
*) ENGINE SPEED It idling with no load after warming up Desired idle speed ± 50 rpm
) DESIRED IDLE
(DESIRED IDLE SPEED)It idling with radiator cooling fan stopped and all
electrical parts turned OFF after warming up, M/T at
neutral700 rpm
*) MAF
(MASS AIR FLOW RATE)At specified idle speed with no load after warming up1.0 – 4.0 g/s 0.14 – 0.52 lb/
min.
At 2500 r/min. with no load after warming up4.0 – 9.0 g/s 0.53 – 1.58 lb/
min.
*) CALC LOAD
(CALCULATED LOAD
VA L U E )At specified idle speed with no load after warming up 16 – 36%
At 2500 r/min. with no load after warming up 10 – 30%
*) MAP
(INTAKE MANIFOLD
ABSOLUTE PRESSURE) (if
equipped)At specified idle speed with no load after warming up 24 – 38 kPa, 7.1 – 11.2 in.Hg
*) THROTTLE POSITION
(RELATIVE THROTTLE
POSITION)Ignition switch ON /
warmed up engine
stoppedAccelerator pedal released 0 – 12%
Accelerator pedal depressed
fully90 – 100%
*) BAROMETRIC PRES —Barometric pressure is
displayed
) FUEL TANK LEVEL Ignition switch ON 0 – 100%
*) BATTERY VOLTAGE Ignition switch ON / engine at stop 10 – 14 V
) BRAKE SWITCH Ignition switch ONBrake pedal is released OFF
Brake pedal is depressed ON
*) FUEL SYSTEM B1
(FUEL SYSTEM STATUS)At specified idle speed after warming up CLSD (closed loop)
*) O2S B1 S1
(HEATED OXYGEN
SENSOR-1)At specified idle speed after warming up 0.1 – 0.95 V
*)
O2S B1 S2
(HEATED OXYGEN
SENSOR-2) (if equipped)At 2000 r/min. for 3 min. or longer after warming up 0.1 – 0.95 V

Downloaded from www.Manualslib.com manuals search engine Engine General Information and Diagnosis: 1A-47
Engine overheatingInoperative thermostat“Thermostat Inspection in Section 1F”
Poor water pump performance“Water Pump Inspection in Section 1F”
Clogged or leaky radiator“Radiator On-Vehicle Inspection and Cleaning
in Section 1F”
Improper engine oil grade“Engine Oil and Filter Change in Section 0B”
Clogged oil filter or oil strainer“Oil Pressure Check in Section 1E”
Poor oil pump performance“Oil Pressure Check in Section 1E”
Faulty radiator cooling fan control
system“Radiator Cooling Fan Control System Check”
Dragging brakesCondition “Dragging brakes” in “Brakes
Symptom Diagnosis in Section 4A”
Slipping clutch (for M/T model)Condition “Slipping clutch” in “Clutch System
Symptom Diagnosis in Section 5C” for M/T
model
Blown cylinder head gasket“Cylinder Head Inspection in Section 1D”
Air mixed in cooling system
Poor gasoline mileageLeaks or loose connection of high-
tension cord“High-Tension Cord Removal and Installation
in Section 1H”
Faulty spark plug (improper gap, heavy
deposits and burned electrodes, etc.)“Spark Plug Inspection in Section 1H”
Malfunctioning EGR valve“EGR Valve Inspection (If Equipped) in Section
1B”
High idle speedCondition “Improper engine idling or engine
fails to idle”
Poor performance of ECT sensor, MAF
sensor“Engine Coolant Temperature (ECT) Sensor
Inspection in Section 1C”, or “Intake Air
Temperature (IAT) Sensor Inspection in
Section 1C”
Faulty electric throttle body assembly“Electric Throttle Body Assembly On-Vehicle
Inspection in Section 1C”
Faulty APP sensor assembly“Accelerator Pedal Position (APP) Sensor
Assembly Inspection in Section 1C”
Faulty fuel injector(s)“Fuel Injector Circuit Check”
Faulty ECM
Low compression“Compression Check in Section 1D”
Poor valve seating“Valves and Valve Guides Inspection in
Section 1D”
Dragging brakesCondition “Dragging brakes” in “Brakes
Symptom Diagnosis in Section 4A”
Slipping clutch (for M/T model)Condition “Slipping clutch” in “Clutch System
Symptom Diagnosis in Section 5C” for M/T
model
Thermostat out of order“Thermostat Inspection in Section 1F”
Improper tire pressure“Tires Description in Section 2D”
Camshaft position control (VVT) system
out of order (for engine with VVT
system)“Oil Control Valve Inspection (For Engine with
VVT) in Section 1D”
Excessive engine oil
consumption – Oil
leakageBlown cylinder head gasket“Cylinder Head Inspection in Section 1D”
Leaky camshaft oil seals“Camshaft, Tappet and Shim Inspection in
Section 1D” Condition Possible cause Correction / Reference Item

Downloaded from www.Manualslib.com manuals search engine 1A-130 Engine General Information and Diagnosis:
DTC Troubleshooting
NOTE
Before this troubleshooting is performed, read the precautions for DTC troubleshooting referring to
“Precautions for DTC Troubleshooting”.

Step Action Yes No
1Was “Engine and Emission Control System Check”
performed?Go to Step 2. Go to “Engine and
Emission Control
System Check”.
2Wire circuit check
1) Disconnect radiator cooling fan relay (1) from individual
circuit fuse box No.1 with ignition switch turned OFF.
2) Turn ON ignition switch, measure voltage between
engine ground to “BLK/RED” wire terminal.
Is voltage 10 – 14 V?Go to Step 3. Open wire in “BLK/RED”
wire is open circuit.
3Wire circuit check
1) Connect radiator cooling fan relay to individual circuit
fuse box No.1 with ignition switch turned OFF.
2) Turn ON ignition switch, measure voltage between
vehicle body ground and “E01-46” terminal of ECM
connector when engine coolant temp. is below 100 °C
(212 °F).
Is voltage 10 – 14 V?Go to Step 7. Go to Step 4.
4Wire circuit check
1) Disconnect connectors from ECM with ignition switch
turned OFF.
2) Disconnect radiator cooling fan relay from individual
circuit fuse box No.1.
3) Measure resistance between “E01-46” terminal of ECM
connector and vehicle ground.
Is resistance infinity?Go to Step 5. “LT GRN” wire is
shorted to ground
circuit.
5Wire circuit check
1) Turn ON ignition switch.
2) Measure voltage between “E01-46” terminal of ECM
connector and vehicle body ground.
Is voltage 0 V?Go to Step 7. “LT GRN” wire is
shorted to other circuit.
6Radiator cooling fan relay check
1) Check radiator cooling fan relay referring to “Radiator
Cooling Fan Relay Inspection in Section 1F”.
Is check result satisfactory?“LT GRN” wire is open
circuit.Replace relay.
1
I5RW0A110036-02

Downloaded from www.Manualslib.com manuals search engine 1A-132 Engine General Information and Diagnosis:
DTC Confirmation Procedure
1) With ignition switch turned OFF, connect scan tool.
2) Turn ON ignition switch and clear DTC using scan tool.
3) Start engine and warm up engine to normal operating temperature.
4) Run engine at idle and turn both A/C switch and heater blower switch ON (turn ON air conditioning) for 3 min. or
more.
5) Check DTC and pending DTC.
DTC Troubleshooting
NOTE
Before this troubleshooting is performed, read the precautions for DTC troubleshooting referring to
“Precautions for DTC Troubleshooting”.

Step Action Yes No
1Was “Engine and Emission Control System Check”
performed?Go to Step 2. Go to “Engine and
Emission Control
System Check”.
2Check wire circuit
1) Disconnect A/C condenser cooling fan control relay (1)
from individual circuit fuse box No.1 with ignition switch
turned OFF.
2) Turn ON ignition switch, measure voltage between
engine ground and “BLK/WHT” wire terminal of A/C
condenser cooling fan control relay.
Is voltage 10 – 14 V?Go to Step 5. Go to Step 3.
1
I5RW0A110038-02

Downloaded from www.Manualslib.com manuals search engine Engine General Information and Diagnosis: 1A-133
3Check wire circuit
1) Disconnect A/C compressor control relay (1) from
individual circuit fuse box No.1 with ignition switch
turned OFF.
2) Turn ON ignition switch, measure voltage between
engine ground and “BLK/WHT” wire terminal of A/C
condenser fan control relay connector.
Is voltage 10 – 14 V?Faulty A/C compressor
control relay.Go to Step 4.
4Check wire circuit
1) Remove “A/C” fuse (10 A) from individual circuit fuse box
No.1 with ignition switch turned OFF.
2) Measure resistance between “BLK/WHT” wire terminal
of “A/C” fuse connector and vehicle body ground.
Is resistance infinity?Open wire in “BLK/
WHT” circuit. If OK, go
to Step 5.“BLK/WHT” wire
shorted to ground
circuit.
5Check wire circuit
1) Connect A/C condenser cooling fan control relay to
individual circuit fuse box No.1 box with ignition switch
turned OFF.
2) Disconnect connectors from ECM.
3) Turn ON ignition switch, measure voltage between
vehicle body ground and “E01-58” wire terminal of ECM
connector.
Is voltage 10 – 14 V?Go to Step 9. Go to Step 6.
6Check wire circuit
1) Disconnect A/C condenser cooling fan control relay from
individual circuit fuse box No.1 with ignition switch
turned OFF.
2) Measure resistance between “E01-58” wire terminal of
ECM connector and vehicle body ground.
Is resistance infinity?Go to Step 7. “RED/BLK” wire shorted
to ground circuit.
7Check wire circuit
1) Turn ON ignition switch.
2) Check voltage between “E01-58” wire terminal of ECM
connector and vehicle body ground.
Is voltage 0 V?Go to Step 8. “RED/BLK” wire shorted
to power supply circuit.
8Check A/C condenser cooling fan control relay
1) Check A/C condenser cooling fan control relay referring
to “A/C System Relay Inspection in Section 7B”.
Is result in good condition?Open wire in “RED/BLK”
circuit.Replace relay. Step Action Yes No
1
I5RW0A110039-02

Downloaded from www.Manualslib.com manuals search engine 1A-148 Engine General Information and Diagnosis:
DTC Troubleshooting
NOTE
Before this troubleshooting is performed, read the precautions for DTC troubleshooting referring to
“Precautions for DTC Troubleshooting”.

DTC P2111: Throttle Actuator Control System - Stuck OpenS6RW0D1104060
Wiring Diagram
Refer to “DTC P2101: Throttle Actuator Control Motor Circuit Range / Performance”.
DTC Detecting Condition and Trouble Area
DTC Confirmation Procedure
1) With ignition switch turned OFF, connect scan tool.
2) Turn ON ignition switch and clear DTC using scan tool.
3) Ignition switch turned OFF for 20 sec. or more.
4) Turn ON ignition switch and check DTC. Step Action Yes No
1Was “Engine and Emission Control System Check”
performed?Go to Step 2. Go to “Engine and
Emission Control
System Check”.
2Throttle actuator control relay circuit check
1) Remove throttle actuator control relay from individual
circuit fuse box No.1 with ignition switch turned OFF.
2) Check for proper connection to throttle actuator control
relay at “BLK/RED”, “GRY”, “BRN” and “GRN” wire
terminals.
3) Turn ON ignition switch.
4) Measure voltage between engine ground and “E01-32”
terminal of ECM connector.
Is voltage 0 V?Go to Step 3. “GRN” wire is shorted to
other circuit.
3Throttle actuator control relay circuit check
1) Disconnect connectors from ECM with ignition switch
turned OFF.
2) Measure resistance between engine ground and “E01-
45” terminal of ECM connector.
Is resistance infinity?Go to Step 4. “BRN” wire is shorted to
ground circuit.
4Throttle actuator control relay check
1) Check throttle actuator control relay referring to “Main
Relay, Fuel Pump Relay, Starting Motor Control Relay,
Throttle Actuator Control Relay and Radiator Cooling
Fan Relay Inspection in Section 1C”.
Is it in good condition?Substitute a known-
good ECM and recheck.Replace throttle
actuator control relay.
DTC detecting condition Trouble area
Throttle position does not change by specified value during diagnosing throttle
valve at ignition switch turned OFF.
(1 driving detection logic)• Electric throttle body assembly
•ECM