sensor SUZUKI SWIFT 2000 1.G SF310 Service Workshop Manual

Output shaft speed sensor (on A / T)
Counter
shaft
gear
ENGINE GENERAL INFORMATION AND DIAGNOSIS (SFI FOR G13) 6-1-89
DTC P0500 VEHICLE SPEED SENSOR (VSS) MALFUNCTION FOR A / T
VEHICLE
CIRCUIT DESCRIPTION
DTC DETECTING CONDITIONPOSSIBLE CAUSE

While fuel is kept cut at lower than 4000 r / min for
longer than 4 sec.

VSS signal not inputted.
2 driving cycle detection logic, continuous
monitoring.
“P” or “Bl” circuit open or short.

Vehicle speed sensor malfunction.

Foreign material being attached or sensor installed
improperly.

Gear damaged.
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 with 2 persons, a driver and a tester, on a level road.
1) Turn ignition switch OFF and then ON.
2) Clear DTC and warm up engine to normal operating temperature.
3) Increase vehicle speed to 50 mph, 80 km / h in “2” range.
4) Release accelerator pedal and with engine brake applied, keep vehicle coasting (fuel cut condition) for 4 sec.
or more.
5) Stop vehicle and check DTC and pending DTC.

6-1-94 ENGINE GENERAL INFORMATION AND DIAGNOSIS (SFI FOR G13)
Fig. 1 for Step 1
When using SUZUKI scan tool:
DTC P1450 BAROMETRIC PRESSURE SENSOR LOW / HIGH INPUT
DTC P1451 BAROMETRIC PRESSURE SENSOR PERFORMANCE PROBLEM
WIRING DIAGRAM / CIRCUIT DESCRIPTION
Barometric pressure sensor is installed in ECM (PCM).
DTC DETECTING CONDITION
POSSIBLE CAUSE
DTC P1450:

Barometric pressure: 136 kPa 1025 mmHg or higher, or
33 kPa 250 mmHg or lower
ECM (PCM) (barometric pressure sensor)
malfunction
DTC P1451:

Vehicle stopped

Engine cranking

Difference between barometric pressure and intake
manifold absolute pressure is 26 kPa, 200 mmHg or more
2 driving cycle detection logic, monitoring once / 1 driving.
Manifold absolute pressure sensor and its
circuit malfunction

ECM (PCM) (barometric pressure sensor)
malfunction
DTC CONFIRMATION PROCEDURE
1) Turn ignition switch OFF.
2) Clear DTC with ignition switch ON.
3) Turn ignition switch ON for 2 sec., crank engine for 2 sec. and run it at idle for 1 min.
4) Check pending DTC in “ON BOARD TEST” or “PENDING DTC” mode and DTC in “DTC” mode.
INSPECTION
DTC P1450:
Substitute a known-good ECM (PCM) and recheck.
DTC P1451:
NOTE:
Note that atmospheric pressure varies depending on weather conditions as well as altitude.
Take that into consideration when performing these check.
STEP
ACTIONYESNO
11) Connect scan tool to DLC with ignition switch OFF.
2) Turn ignition switch ON and select “DATA
LIST” mode on scan tool.
3) Check manifold absolute pressure. See Fig. 1.
Is it barometric pressure (approx. 100 kPa,
760 mmHg) at sea level?Substitute a known-
good ECM (PCM) and
recheck.Go to Step 2.

Applying Vacuum Displayed Value on Scan Tool
0Barometric pressure
(Approx. 100 kPa, 760 mmHg)
27 kPa
200 mmHgBarometric pressure –27 kPa
(Approx. 73 kPa, 560 mmHg
67 kPa
500 mmHgBarometric pressure –67 kPa
(Approx. 33 kPa, 260 mmHg)
ENGINE GENERAL INFORMATION AND DIAGNOSIS (SFI FOR G13) 6-1-95
Fig. 2 for Step 2
STEPACTIONYESNO
2Check MAP Sensor
1) Remove MAP sensor from intake manifold and connect
vacuum pump gauge to MAP sensor. See Fig. 2.
2) Connect scan tool to DLC and turn ignition switch ON.
3) Check intake manifold absolute pressure displayed on
scan tool under following conditions.
Is check result satisfactory?Check air intake
system for air
being drawn in
and engine
compression.
If OK, then
substitute a
known-good ECM
(PCM) and
recheck.Replace MAP
sensor.

6-1-96 ENGINE GENERAL INFORMATION AND DIAGNOSIS (SFI FOR G13)
Main
fuse
M/T vehicle
A/T vehicle
Ignition
switch
(starter
switch)
Starter
Starter Transmission
range sensor (switch) Main
fuse
Ignition
switch
(starter
switch)
DTC P1500 ENGINE STARTER SIGNAL CIRCUIT MALFUNCTION
CIRCUIT DESCRIPTION
DTC DETECTING CONDITIONPOSSIBLE CAUSE

Low voltage at terminal C03-17 when cranking
engine or

High voltage at terminal C03-17 after starting engine.
2 driving cycle detection logic, continuous monitoring.
“B/Y” circuit open

ECM (PCM) malfunction
DTC CONFIRMATION PROCEDURE
1) Turn ignition switch OFF.
2) Clear DTC with ignition switch ON, crank engine and run it at idle for 3 min.
3) Check pending DTC in “ON BOARD TEST” or “PENDING DTC” mode and DTC in “DTC” mode.
INSPECTION
STEPACTIONYESNO
1Was “ENGINE DIAG. FLOW TABLE” performed?Go to Step 2.Go to “ENGINE DIAG.
FLOW TABLE”.
2Check for voltage at terminal C03-17 of ECM
(PCM) connector connected, under following
condition.
While engine cranking : 6 – 10 V
After starting engine : 0 V
Is voltage as specified?Poor C03-17
connection or
intermittent trouble.
Check for intermittent
referring to “Intermittent
and Poor Connection”
in Section 0A.
If wire and connections
are OK, substitute a
known-good ECM
(PCM) and recheck.“B/Y” circuit open.

ENGINE GENERAL INFORMATION AND DIAGNOSIS (SFI FOR G13) 6-1-103
A/C
amplifier(A / C ON output signal)
(A / C input signal)
TABLE B-4 A / C SIGNAL CIRCUITS CHECK (VEHICLE WITH A / C)
INSPECTION
STEPACTIONYESNO
1Check A / C (input) Signal Circuit.
1) Check voltage at terminal C02-16. See Fig. 1.
While engine running and A / C
switch and / or heater blower switch
OFF (A / C is not operating) : 10 – 14 V
While engine running and both
A / C switch and heater blower
switch ON (A / C is operating) : About 0 V
Are check result as specified?Go to Step 2.“Lg / B” circuit open
or short,
Evaporative
temperature is
1C (34F) below
or faulty A / C
system.
2Check A / C ON (Output) Signal Circuit.
1) Check voltage at terminal C02-1. See Fig. 2.
While engine running and A / C
switch and / or heater blower
switch OFF (A / C is not operating) : About 0 V
While engine running at idle speed
and both A / C switch and heater blower
switch ON (A / C is operating) : 10 – 14 V
Are check result as specified?A / C control signal
circuits are in good
condition.“G/R” circuit open
or short, Poor
performance of
ECT sensor, TP
sensor, Engine
start signal
inputted or A / C
amplifier
malfunction.
If none of the
above exists,
substitute a
known-good ECM
and recheck.

6-1-106 ENGINE GENERAL INFORMATION AND DIAGNOSIS (SFI FOR G13)
Radiator cooling fan relay
To
ECM
Main
relay
Relay
box
“RDTR”
(Radiator fan)Radiator cooling
Fan motor
TABLE B-7 RADIATOR COOLING FAN CONTROL SYSTEM CHECK
INSPECTION
STEPACTIONYESNO
1Check Fan Control System.
1) Connect scan tool to DLC with ignition switch OFF.
2) Start engine and select “DATA LIST” mode on scan tool.
3) Warm up engine until coolant temp. is 97.5C, 208F or
higher and A / C switch turn OFF. (If engine coolant temp.
does not rise, check engine cooling system or ECT sensor.)
See Fig. 1.
Is radiator cooling fan started when engine coolant temp.
reached above temp.?Radiator cooling
fan control
system is in good
condition.Go to Step 2.
2Check Radiator Cooling Fan Relay and Its Circuit.
1) Check DTC and pending DTC with scan tool.
Is DTC P0480 displayed?Go to DTC
P0480 Diag.
Flow Table.Go to Step 3.
3Check Radiator Cooling Fan Relay.
1) Turn ignition switch OFF and remove radiator cooling fan
relay.
2) Check for proper connection to relay at terminals “c” and “d”.
3) If OK, check that there is continuity between “c” and “d” when
battery is connected to terminals “a” and “b”. See Fig. 2.
Is check result satisfactory?Go to Step 4.Replace radiator
fan relay.
4Check Radiator Cooling Fan.
1) Turn ignition switch OFF.
2) Disconnect cooling fan motor connector.
3) Check for proper connection to motor at “Bl / R” and “B”
terminals.
4) If OK, connect battery to motor and check for operation.
See Fig. 3.
Is it in good condition?“Bl / W”, “Bl / R” or
“B” circuit open.Replace radiator
cooling fan
motor.

3 / 4 turn
ENGINE MECHANICAL (G10, 1-CAM 6-VALVES ENGINE) 6A-3
3) Install special tool (Oil pressure gauge) to vacated threaded
hole.
Special Tool
(A): 09915-77311
(B): 09915-78211
NOTE:
At this time, be very careful not to exert force to where
heated oxygen sensor and its lead wire are connected.
4) Reinstall oil filter.
5) Start engine and warm it up to normal operating temperature.
6) After warming up, raise engine speed to 4,000 r / min and mea-
sure oil pressure.
Oil pressure specifications: 270 – 370 kPa
(2.7 – 3.7 kg / cm
2,
38.4 – 52.6 psi) at
4,000 r / min (rpm)
7) After checking oil pressure, stop engine and remove oil filter
and oil pressure gauge.
8) Before reinstalling oil pressure switch (1), be sure to wrap its
screw threads with a sealing tape and tighten switch to speci-
fied torque.
NOTE:
If sealing tape edge is bulged out from screw threads of
switch, cut it off.
Tightening Torque
(a): 14 N
.m (1.4 kg-m, 10.5 lb-ft)
9) After oiling oil filter “O” ring (rubber gasket), screw oil filter on
oil filter stand by hand until filter “O” ring contacts mounting sur-
face.
CAUTION:
To tighten oil filter properly, it is important to accurately
identify the position where filter “O” ring first contacts
mounting surface.
10) Tighten filter (1) 3 / 4 (270) turn from the point of contact with
mounting surface using an oil filter wrench.
Special Tool
(C): 09915-47310
CAUTION:
To prevent oil leakage, make sure that oil filter is tight,
but do not overtighten it.
11) After installing oil filter, start engine and check oil filter for oil
leakage.

1. Throttle body
1. Throttle body
2. ISC actuator
5. Clamp
6A-6 ENGINE MECHANICAL (G10, 1-CAM 6-VALVES ENGINE)
4) Remove air cleaner assembly.
5) Disconnect the following electric lead wires:

EGR valve

ISC actuator (2)

Ground wires from intake manifold

Fuel injector (4)

TP sensor (3)

EFE heater (5)

Engine coolant temp. gauge
6) Disconnect fuel return (4) and feed hoses (3) from fuel pipes.
7) Disconnect coolant hoses from intake manifold.
8) Disconnect the following vacuum hoses.

Canister purge hose from intake manifold.

EGR pressure transducer hoses from EGR valve.

EGR valve hose from EGR valve.

Pressure sensor hose from intake manifold.

Brake booster hose from intake manifold.
9) Disconnect breather hose from PCV valve.
10) Disconnect accelerator cable from throttle body.
11) Disconnect other connected to throttle body and intake man-
ifold, if any.
12) Remove intake manifold with throttle body from cylinder head.
13) Remove throttle body from intake manifold.

2. Ground
1. Throttle body
2. ISC actuator
coupler
3. TP sensor
coupler
4. Fuel injector
coupler
5. EFE heater
coupler
ENGINE MECHANICAL (G10, 1-CAM 6-VALVES ENGINE) 6A-7
INSTALLATION
1) Install throttle body to intake manifold. (Refer to Section 6E.)
2) Install intake manifold gasket to cylinder head. Use a new gas-
ket.
3) Install intake manifold (1) with throttle body to cylinder head.

Install clamps (3) as shown in figure, and tighten bolts and
nuts to specification.
Tightening Torque
(a): 23 N
.m (2.3 kg-m, 17.0 lb-ft)
4) Connect breather hose to PCV valve.
5) Connect vacuum hoses.
6) Connect coolant hoses.
7) Connect fuel return and feed hoses to throttle body.
8) Connect electric lead wire.
9) Connect accelerator cable to throttle body.
10) Install air cleaner assembly to throttle body.
11) Check to ensure that all removed parts are back in place.
Reinstall any necessary parts which have not been reinstalled.
12) Refill cooling system.
13) Connect negative cable at battery.
14) Upon completion of installation, start engine and check for fuel
leaks and engine coolant leaks.
After warming up engine, adjust accelerator cable play to spec-
ification according to description in Section 6E.

1. Exhaust manifold
2. Gasket
3. Cover
4. Heated oxygen sensor
5. Pipe seal
6. Exhaust pipe
7. WU-TWC (if equipped)
8. Exhaust pipe bolt : Tightening Torque
: Do not reuse
6A-8 ENGINE MECHANICAL (G10, 1-CAM 6-VALVES ENGINE)
EXHAUST MANIFOLD
WARNING:
To avoid danger of being burned, do not service exhaust
system while it is still hot.
Service should be performed after system cools down.
REMOVAL
1) Disconnect negative cable at battery.
2) Disconnect heated oxygen sensor coupler.
Release its wire from clamps.
3) Disconnect exhaust pipe (1) from exhaust manifold (or WU-
TWC (2)).
4) Remove WU-TWC stiffener (3). (if equipped)
5) Remove exhaust manifold cover (2). (for vehicle with WU-TWC)
6) Remove exhaust manifold (1) with WU-TWC (if equipped) and
its gasket from cylinder head.