2005 SUZUKI SWIFT low oil pressure

Downloaded from www.Manualslib.com manuals search engine Engine General Information and Diagnosis: 1A-45
Engine has no powerFaulty spark plug “Spark Plug Inspection in Section 1H”
Faulty ignition coil with ignitor “Ignition Coil Assembly (Including ignitor)
Inspection in Section 1H”
Leaks, loose connection or
disconnection of high-tension cord “High-Tension Cord Removal and Installation
in Section 1H”
Faulty knock sensor “DTC P0327 / P0328: Knock Sensor 1 Circuit
Low / High”
Clogged fuel hose or pipe “Fuel Pressure Check”
Malfunctioning fuel pump “Fuel Pump and Its Circuit Check”
Air drawn in through intake manifold
gasket or throttle body gasket
Engine overheating Condition “Engine overheating”
Malfunctioning EGR valve “EGR Valve Inspection in Section 1B”
Poor performance of ECT sensor or
MAF sensor “ECT Sensor Inspection in Section 1C” or
“MAF and 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 “APP Sensor Assembly Inspection in Section
1C”
Faulty fuel injector(s) “Fuel Injector Circuit Check”
Faulty ECM
Dragging brakes Condition “Dragging brakes” in “Brakes
Symptom Diagnosis in Section 4A”
Slipping clutch Condition “Slipping clutch” in “Clutch System
Symptom Diagnosis in Section 5C”
Low compression “Compression Check in Section 1D”
Camshaft position control (VVT) system
out of order “Oil Control Valve Inspection in Section 1D”
Improper engine idling or
engine fails to idle Faulty spark plug
“Spark Plug Inspection in Section 1H”
Leaky or disconnected high-tension cord “High-Tension Cord Removal and Installation
in Section 1H”
Faulty ignition coil with ignitor “Ignition Coil Assembly (Including ignitor)
Inspection in Section 1H”
Fuel pressure out of specification “Fuel Pressure Check”
Leaky manifold, throttle body, or cylinder
head gasket
Malfunctioning EGR valve “EGR Valve Inspection in Section 1B”
Faulty evaporative emission control
system “EVAP Canister Purge Inspection in Section
1B”
Faulty EGR system “EGR System Inspection in Section 1B”
Faulty fuel injector(s) “Fuel Injector Circuit Check”
Poor performance of ECT sensor or
MAF sensor “ECT Sensor Inspection in Section 1C” or
“MAF and 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 “APP Sensor Assembly Inspection in Section
1C”
Faulty ECM
Loose connection or disconnection of
vacuum hoses
Malfunctioning PCV valve “PCV Valve Inspection in Section 1B”
Engine overheating Condition “Engine overheating”
Low compression “Compression Check in Section 1D”
Camshaft position control (VVT) system
out of order “Oil Control Valve Inspection in Section 1D”
Condition Possible cause Correction / Reference Item

Downloaded from www.Manualslib.com manuals search engine 1A-46 Engine General Information and Diagnosis:
Excessive hydrocarbon
(HC) emission or carbon
monoxide (CO)Faulty spark plug
“Spark Plug Inspection in Section 1H”
Leaky or disconnected high-tension cord “High-Tension Cord Removal and Installation
in Section 1H”
Faulty ignition coil with ignitor “Ignition Coil Assembly (Including ignitor)
Inspection in Section 1H”
Low compression “Compression Check in Section 1D”
Lead contamination of three way
catalytic converter Check for absence of f
iller neck restrictor.
Faulty evaporative emission control
system “EVAP Canister Purge Inspection in Section
1B”
Fuel pressure out of specification “Fuel Pressure Check”
Closed loop system (A/F feedback
compensation) fails (Faulty TP sensor,
Poor performance of ECT sensor or
MAF sensor) “Electric Throttle Body Assembly On-Vehicle
Inspection in Section 1C”, “ECT Sensor
Inspection in Section 1C” or “MAF and 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 “APP Sensor Assembly Inspection in Section
1C”
Faulty injector(s) “Fuel Injector Circuit Check”
Faulty ECM
Engine not at normal operating
temperature
Clogged air cleaner “Air Cleaner Element Inspection and Cleaning
in Section 1D”
Vacuum leaks “Engine Vacuum Check in Section 1D”
Camshaft position control (VVT) system
out of order “Oil Control Valve Inspection in Section 1D”
Excessive nitrogen
oxides (NOx) emission Improper ignition timing
“Ignition Timing Inspection in Section 1H”
Lead contamination of catalytic
converter Check for absence of f
iller neck restrictor.
Faulty EGR system “EGR System Inspection in Section 1B”
Fuel pressure out of specification “Fuel Pressure Check”
Closed loop system (A/F feedback
compensation) fails (Faulty TP sensor,
Poor performance of ECT sensor or
MAF sensor) “Electric Throttle Body Assembly On-Vehicle
Inspection in Section 1C”, “ECT Sensor
Inspection in Section 1C” or “MAF and 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 “APP Sensor Assembly Inspection in Section
1C”
Faulty injector(s) “Fuel Injector Circuit Check”
Faulty ECM
Camshaft position control (VVT) system
out of order “Oil Control Valve Inspection in Section 1D”
Condition Possible cause Correction / Reference Item

Downloaded from www.Manualslib.com manuals search engine 1A-52 Engine General Information and Diagnosis:
DTC P0011 / P0012: “A” Camshaft Position - Timing Over-Advanced or System Performance / -
Retarded
S7RS0B1104014
System Description
Actual value of advanced valve timing does not reach target value.
Valve timing is advanced although ECM command is most retarding.
DTC Detecting Condition and Trouble Area
DTC Confirmation Procedure
WARNING!
• When performing a road test, select a place where there is no traffic or possibility of a traffic accident and be very careful during testing to avoid occurrence of an accident.
• Road test should be carried out by 2 persons, a driver and tester, on a level road.

NOTE
Check to make sure that the following conditions are satisfied when using this “DTC Confirmation
Procedure”.
• Altitude (barometric pressure): 2400 m, 8000 ft or less (560 mmHg, 75 kPa or more)

1) Clear DTC. Refer to “DTC Clearance”.
2) Start engine and drive vehicle under usual driving condition for 5 minutes or longer until engine is warmed up to normal operating temperature.
3) Stop vehicle.
4) Run engine at idle speed for 1 minute.
5) Start vehicle and increase vehicle speed up to 80 km/h (50 mile/h).
6) Keep vehicle speed at 80 km/h (50 mile/h) for 1 minute or longer at 5th gear position or D range.
7) Decrease vehicle speed gradually.
8) Stop vehicle and turn OFF ignition switch.
9) Repeat Step 4) to 7) one time.
10) Stop vehicle. 11) Check DTC and pending DTC. DTC detecting condition
Trouble area
Actual value of advanced valve timing does not reach
target value, or valve timi ng is advanced although ECM
command is most retarding.
(2 driving cycle detection logic) • Oil control valve
• Oil galleries of timing sprocket
• Intake camshaft timing sprocket (Camshaft position
control (VVT) actuator)
• Oil control valve circuit
•ECM

Downloaded from www.Manualslib.com manuals search engine Engine General Information and Diagnosis: 1A-53
DTC Troubleshooting
NOTE
• When measuring circuit voltage, resistance and/or pulse signal at ECM connector, connect the
special tool to ECM and/or the ECM connectors re ferring to “Inspection of ECM and Its Circuits”.
• Upon completion of inspection and repair work, perform “DTC Confirmation Procedure” and confirm that the trouble has been corrected.

Step Action YesNo
1 Is DTC P0010 detected together? Go to “DTC P0010: “A”
Camshaft Position
Actuator Circuit”.Go to Step 2.
2 Do you have SUZUKI scan tool? Go to Step 3.Go to Step 5.
3 Camshaft position control check
1) With ignition switch turned OFF, connect SUZUKI scan
tool to DLC.
2) Start engine and warm up to normal operating temperature.
3) Select menu to DATA LIST.
4) Check that “VVT GAP” displayed on SUZUKI scan tool is 0 – 5 °.
Is it OK? Go to Step 4.
Check valve timing
referring to “Timing
Chain and Chain
Tensioner Removal and
Installation in Section
1D”. If OK, go to Step 5.
4 Camshaft position control check
1) Drive vehicle under following conditions.
• Vehicle speed at 80 km/h (50 mile/h).
• Gear position at 5th or D range.
2) Check that “VVT GAP” displayed on SUZUKI scan tool is 0 – 5 °.
Is it OK? Substitute a known-
good ECM and recheck.
Go to Step 5.
5 Oil control circuit visual inspection
1) Remove cylinder head cover referring to “Cylinder Head
Cover Removal and Insta llation in Section 1D”.
2) Check oil pressure leakage from oil control circuit.
Is it in good condition? Go to Step 6.
Repair or replace.
6 Oil control valve and oil gallery pipe check
1) Remove oil control valve re ferring to “Oil Control Valve
Removal and Installation in Section 1D”.
2) Remove oil gallery pipe refe rring to “Timing Chain Cover
Removal and Installation in Section 1D”.
3) Check oil gallery pipe and o il control valve for clog or
sludge.
Are they in good condition? Go to Step 7.
Clean oil control valve
and oil gallery pipe.
Replace oil control valve
if a problem is not
solved after cleaning oil
control valve and oil
gallery pipe.
7 Oil control valve electrical circuit check
1) Check that oil control valve circuit is in good condition
referring to “DTC P0010: “A” Camshaft Position Actuator
Circuit”.
Is circuit in good condition? Go to Step 8.
Repair circuit.
8 Oil control valve check
1) Check oil control valve refe rring to “Oil Control Valve
Inspection in Section 1D”.
Is it in good condition? Replace camshaft
timing sprocket.
Replace oil control
valve.

Downloaded from www.Manualslib.com manuals search engine Engine General Information and Diagnosis: 1A-177
C37-10 WHTOxygen signal of
HO2S-1 0 – 1 V Ignition switch turned ON.
—
*Deflects between
over 0.5 V and under 0.45 V
(“Reference
waveform No.10: ” and “Reference
waveform No.11: ”) While engine running at
2,000 r/min. for 1 min. or
longer after warmed up.
C37-11 BRN Oxygen signal of
HO2S-2 4 – 5 V Ignition switch turned ON.
—
*Deflects between
over 0.5 V and under 0.45 V
(“Reference
waveform No.12: ”) While engine running at
2,000 r/min. or more after
vehicle running over 30
km/h, 19 mph for 5 min.
C37-12 WHT CAN (low)
(communication
line (active low
signal) to TCM (A/T
model) *0.5 – 2.5 V
(“Reference
waveform No.13: ”) Ignition switch turned ON
with engine stop. CAN communication line
signal is pulse. Pulse
signal displayed with a
regular frequency which
varies depending on
engine condition.
C37-13 RED CAN (high)
communication line
(active high signal)
to TCM (A/T
model) *2.5 – 4.5 V
(“Reference
waveform No.13: ”)
C37-14 GRY/
RED Output of 5 V
power source for
MAP sensor, A/C
refrigerant
pressure sensor
4.5 – 5.5 V Ignition switch turned ON. —
C37-15 BLK Ground for ECM Below 0.3 V Ignition switch turned ON. —
C37-16 BLU/
RED Fuel injector No.3
output 10 – 14 V Ignition switch turned ON. —
*0 – 0.6 V ↑↓
10 – 14 V
(“Reference
waveform No.1: ” and
“Reference waveform No.14: ”) Engine running at idle
after warmed up engine.
Output signal is active low
pulse. Pulse frequency
varies depending on
engine speed.
C37-17 BLU/
ORNFuel injector No.4
output 10 – 14 V Ignition switch turned ON. —
*0 – 0.6 V ↑↓
10 – 14 V
(“Reference
waveform No.1: ” and
“Reference waveform No.15: ”) Engine running at idle
after warmed up engine.
Output signal is active low
pulse. Pulse frequency
varies depending on
engine speed.
C37-18 BRN/
YEL EGR valve
(stepper motor coil
4) output 10 – 14 V Ignition switch turned ON. —
*0 – 1 V ↑↓
10 – 14 V
(“Reference
waveform No.4: ”) Ignition switch is turned to
ST (cranking) position. Output signal is active low
duty pulse. Number of
pulse generated times
varies depending on
vehicle condition.
C37-19 WHT/
RED EGR valve
(stepper motor coil
3) output 10 – 14 V Ignition switch turned ON. —
*0 – 1 V ↑↓
1

0 – 14 V
(“Reference
waveform No.4: ”) Ignition switch is turned to
ST (cranking) position. Output signal is active low
duty pulse. Number of
pulse generated times
varies depending on
vehicle condition.
Terminal
No. Wire
color Circuit Normal voltage
ConditionRemarks

Downloaded from www.Manualslib.com manuals search engine 1A-180 Engine General Information and Diagnosis:
C37-50 —Ground of ECM for
shield wire Below 0.3 V Ignition switch turned ON. —
C37-51 — Ground of ECM for
shield wire Below 0.3 V Ignition switch turned ON. —
C37-52 — Ground of ECM for
shield wire Below 0.3 V Ignition switch turned ON. —
C37-53 RED/
BLK MAP sensor signal Approx. 4 V
(“Reference
waveform No.23: ”) Ignition switch turned ON
with barometric pressure
at 100 kPa, 760 mmHg.
—
0.4 – 2.0 V
(“Reference
waveform No.24: ”) While engine running at
specified idle speed after
warmed up with
barometric pressure at
100 kPa, 760 mmHg.
C37-54 GRN TP sensor (main)
signal 0.75 – 1.08 V
Ignition switch turned ON
and accelerator pedal at
idle position after warmed
up engine.
—
3.67 – 4.24 V Ignition switch turned ON
and accelerator pedal at
full depressed position
after warmed up engine.
C37-55 ORN Ground for sensors Below 0.3 V Ignition switch turned ON. —
C37-56 RED Knock sensor
signal 2 – 3 V
(“Reference
waveform No.25: ” and “Reference
waveform No.26: ”) Ignition switch turned ON.
—
Engine running at 4000 r/
min. after warmed up.
C37-57 YEL Ground for sensors Below 0.3 V Ignition switch turned ON. —
C37-58 BLK/
ORN Ground for ECM Below 0.3 V Ignition switch turned ON.
—
C37-59 YEL/
GRN Oil control valve
ground
Below 1.3 V Ignition switch turned ON.
—
C37-60 YEL/
RED Oil control valve
output *0 – 0.6 V
↑↓
10 – 14 V
(“Reference
waveform No.27: ” and “Reference
waveform No.28: ”) At the moment of ignition
switch turned ON.
Output signal is active
high pulse. Duty ratio
varies depending on
vehicle condition.
Terminal
No. Wire
color Circuit Normal voltage
ConditionRemarks
Terminal
No. Wire
color Circuit Normal voltage Condition Remarks
E23-1 BLK/
RED Main power supply 10 – 14 V Ignition switch turned ON. —
E23-2 WHT/
RED Power source for
ECM internal
memory
10 – 14 V Ignition switch turned ON. —
E23-3 RED CAN (high)
communication line
(active high signal)
for ABS control
module, BCM,
combination meter *2.5 – 4.5 V
(“Reference
waveform No.29: ”) Ignition switch turned ON
with engine at stop. CAN communication line
signal is pulse. Pulse
signal displayed with a
regular frequency with
varies depending on
engine condition.

Downloaded from www.Manualslib.com manuals search engine Engine Mechanical: 1D-2
Camshaft Position Control (VVT Variable Valve Timing) System DescriptionS7RS0B1401002
System Description
The VVT system is an electronic control system which continuously vary and optimize the intake valve timing in
response to the engine operating condition.
The optimized intake valve timing produce such an air intake with high efficiency that both the higher power generation
and lower fuel consumption can be attained in the whole engine speed range from low to high. In the area of the
average engine load, low emission of nitrogen oxides (NOx) and high fuel efficiency can also be attained by making
the valve opening overlap between the intake and exhaust valves longer.
For the brief of the system operation, the intake valve timing is varied by the cam timing sprocket (1) which varies the
rotational phase between the intake camshaft (3) and sprocket . The rotor (2) in the cam timing sprocket is actuated by
switching or adjusting the hydraulic pressure applied to the chambers for the timing advancing (7) and/or retarding (6).
To switch or adjust the hydraulic pressure appropriately, ECM operates the oil control valve (12) with detecting the
engine speed, intake air value, throttle opening, engine coolant temperature and camshaft position (angle).
1
4
5
13
10
89
2
7
6
12
11
3
14
60 (variable angle)
Most retarded timing
Most advanced timing
Exhaust valve Intake valve
Crank angle
Overlap of valves
Valve lift
I3RH0B140002-01
4. Oil passage to chamber for timing retarding 8. Oil filter10. Oil pan 13. Oil return
5. Oil passage to chamber for timing advancing 9. Oil pump11. Control signal from ECM 14. Oil flow

Downloaded from www.Manualslib.com manuals search engine Engine Mechanical: 1D-4
Targeted Timing Varying Operation
Diagnostic Information and Procedures
Compression CheckS7RS0B1404001
Check compression pressure on all 4 cylinders as
follows:
1) Warm up engine to normal operating temperature.
2) Stop engine after warming up.
NOTE
After warming up engine, place transaxle
gear shift lever in “Neutral”, and set parking
brake and block drive wheels.

3) Disconnect negative cable at battery.
4) Remove engine cover.
5) Remove air cleaner assembly and air suction hose referring to “Air Cleaner Components”.
6) Remove cylinder head upper cover.
7) Disconnect ignition coil couplers (1).
8) Remove ignition coil assemblies (2) with high- tension cord (3).
9) Remove all spark plugs.
10) Disconnect fuel injector wires (4) at the coupler. Driving condition Valve timing Target of control Effect
Engine running at idle
speed Most retardedTo shorten the valve opening overlap in
order to prevent the exhaust gas
counterflow to in
take manifold. Stabilization of the engine
rotation at idle speed.
Average engine load
range To the advanced
sideTo lengthen the valve opening overlap
in order to enhance the internal
exhaust gas recirculation and reduce
the pumping loss. Improvement of the fuel
efficiency.
Lowering of the exhaust
emission.
Light engine load
range To the retarded sideTo shorten the valve opening overlap in
order to prevent the exhaust gas
counterflow to in
take manifold. Keeping of the engine stability.
Low or average
engine speed range
with heavy engine
load To the advanced
side
To advance the closing timing of the
intake valve in order to improve the
volumetric efficiency. Improvement of generating the
engine torque at low and
average engine speed.
High engine speed
range with heavy
engine load To the retarded sideTo retard the closing timing of the
intake valve in order to improve the
volumetric efficiency. Improvement of generating the
engine power.
Low engine coolant
temperature Most retardedTo shorten the valve opening overlap in
order to prevent the exhaust gas
counterflow to intake manifold and
reduce the fuel increasing.
To slow the fast idle speed of the
engine as a result of stabilizing the
engine idling. Stabilization of the fast idling of
the engine.
Improvement of the fuel
efficiency.
At engine starting and
stopping Most retardedTo shorten the valve opening overlap in
order to prevent the exhaust gas
counterflow to in
take manifold. Improvement of start ability.I2RH0B140003-01