2000 SUZUKI SWIFT CHECK

ENGINE AND EMISSION CONTROL SYSTEM (TBI FOR G10) 6E1-29
1. ISC actuator relay
2. Relay box
1. EFE heater
2. Rubber cover
3.“Red” wire
4.“Black” wire
ISC ACTUATOR RELAY
INSPECTION
1) Disconnect negative cable at battery.
2) Remove ISC actuator relay from relay box.
3) Structure of ISC actuator relay is the same as that of main relay.
Check its resistance and operation using the same procedure as
that for main relay.
EFE HEATER CONTROL SYSTEM
SYSTEM CIRCUIT INSPECTION
NOTE:
Before inspection, check to make sure that gear shift lever is
in neutral position (with A/T model, selector lever in “P” range)
and that parking brake lever is pulled all the way up.
1) Turn up rubber cover of EFE heater to expose terminal-to-wire
connections.
2) Connect voltmeter to EFE terminals and check for voltage under
each condition given below.
CONDITION
VOLTAGE
Fast idle condition
Coolant temp.: below 80C (176F)
Engine speed: over 750 r/min.Battery
voltage
After warming up (other than above)No voltage
If check results are not as specified in above table, check EFE
heater, relay and wire harness.
3) Cover EFE heater connections with rubber cover.
EFE HEATER
CAUTION:
Do not bend wire harness of EFE heater excessively.
ON-VEHICLE INSPECTION
1) Disconnect EFE heater coupler.
2) Check resistance of EFE heater.
If it is not as specified below, replace.
EFE heater resistance: 0.5 – 3.0 Ω at 20C (68F)
3) Connect EFE heater coupler securely.
REMOVAL
1) Remove throttle body according to procedure described pre-
viously.
In this case, however, it is not necessary to disconnect fuel
hoses and engine cooling water hoses from throttle body.
2) Disconnect EFE heater coupler.
3) Remove EFE heater from intake manifold.

6E1-30 ENGINE AND EMISSION CONTROL SYSTEM (TBI FOR G10)
1. Insulator
2. Lower gasket
3. Heater
1. Intake manifold
2. EFE heater
1. EFE heater relay
2. Relay box
1. Radiator fan motor
INSPECTION

Check lower gasket for damage and deterioration. Replace as
necessary.

Check heater and insulator for crack, corrosion or any other dam-
age. Replace as necessary.
INSTALLATION
1) Clean mating surfaces of throttle body and intake manifold that
mate with EFE heater.
2) Install EFE heater to intake manifold.
Use new upper gasket.
3) Install throttle body according to procedure described previous-
ly.
4) Connect EFE heater coupler.
EFE HEATER RELAY
INSPECTION
1) Disconnect negative cable at battery.
2) Remove EFE heater relay from relay box.
3) Structure of EFE heater relay is the same as that of main relay.
Check its resistance and operation using the same procedure as
that for main relay.
If found defective, replace.
RADIATOR FAN CONTROL SYSTEM
SYSTEM INSPECTION
WARNING:
Keep hands, tools, and clothing away from engine cooling
fan to help prevent personal injury. This fan is electric and
can come on whether or not the engine is running. The fan
can start automatically in response to the ECT sensor with
the ignition switch in the “ON” position.
Connect SUZUKI scan tool (2) to DLC (3).
Start engine and keep it running to warm it up.
Now check to ensure that radiator fan is started when the coolant
temperature displayed on SUZUKI scan tool reaches 96C
(205F).
If check result is not satisfactory, check RFC relay, wire harness,
ECT sensor, ECM, coolant temp. meter and sender gauge unit.
Refer to “DTC P0480 FLOW TABLE” of Section 6 and “COOLANT
TEMP. METER AND GAUGE UNIT” of Section 8.

ENGINE AND EMISSION CONTROL SYSTEM (TBI FOR G10) 6E1-31
1. RFC relay
2. Relay box
RADIATOR FAN CONTROL RELAY (RFC RELAY)
INSPECTION
1) Disconnect negative cable at battery.
2) Remove RFC relay from relay box.
3) Structure of RFC relay is the same as that of main relay.
Check its resistance and operation using the same procedure as
that for main relay. If found defective, replace.
RADIATOR FAN
INSPECTION
1) Disconnect negative cable at battery.
2) Disconnect radiator fan motor connector.
3) Connect battery to the motor and check for operation.
If fan fails to operate, replace.

6E1-32 ENGINE AND EMISSION CONTROL SYSTEM (TBI FOR G10)
RH
LH
EMISSION CONTROL SYSTEM
EVAPORATIVE EMISSION CONTROL SYSTEM
EVAP CANISTER PURGE INSPECTION
NOTE:
Before inspection, check to make sure that gear shift lever is
in neutral position (with A / T model, selector lever in “P” range)
and that parking brake lever is pulled all the way up.
1) Disconnect purge hose from EVAP canister.
2) Place finger against the end of disconnected hose and check
that vacuum is not felt there when engine is cool and running at
idle speed.
3) Connect purge hose to EVAP canister and warm up engine to
normal operating temperature.
4) Disconnect purge hose from EVAP canister.
5) Also check that vacuum is felt when engine is running at idle
speed.
NOTE:
The EVAP canister purge system does not perform purging
(vacuum is not detected at the purge hose) unless the en-
gine is sufficiently warmed up and the heated oxygen sen-
sor is activated fully. Also, when the purge hose is discon-
nected in Step 4), the air is drawn into the purge line. As a
result, ECM detects a change in the purge gas concentra-
tion and sometimes stops purging but this indicates noth-
ing abnormal.
If check result is not satisfactory, check vacuum passage, hoses,
EVAP canister purge valve, wire harness and ECM.
VACUUM PASSAGE INSPECTION
Start engine end run it at idle speed. Disconnect vacuum hose from
EVAP canister purge valve. With finger placed against hose discon-
nected, check that vacuum is applied.
If it is not applied, clean vacuum passage by blowing compressed
air.
VACUUM HOSE INSPECTION
Check hoses for connection, leakage, clog and deterioration. Re-
place as necessary.

ENGINE AND EMISSION CONTROL SYSTEM (TBI FOR G10) 6E1-33
EVAP CANISTER PURGE VALVE INSPECTION
WARNING:
Do not suck the air through valve. Fuel vapor inside valve
is harmful.
1) With the ignition switch OFF position, disconnect coupler from
EVAP canister purge valve.
2) Check resistance between two terminals of EVAP canister
purge valve.
Resistance of EVAP canister purge valve:
33 – 39 Ω at 20C (68F)
If resistance is as specified, proceed to next operation check.
If not, replace.
3) Disconnect vacuum hoses from intake manifold and its pipe.
4) With coupler disconnected, blow into pipe “A”. Air should not
come out of pipe “B”.
5) Connect 12 V-battery to EVAP canister purge valve terminals.
In this state, blow pipe “A”.
Air should come out of pipe “B”.
If check result is not as described, replace canister purge valve.
6) Connect vacuum hoses.
7) Connect EVAP canister purge valve coupler securely.

6E1-34 ENGINE AND EMISSION CONTROL SYSTEM (TBI FOR G10)
1. Tank pipe
2. Purge pipe
3. Air pipe
4. Blow air
1. Tank pressure
control valve
2. Orange side3. Black side
4. To canister
5. From fuel tank
EVAP CANISTER INSPECTION
WARNING:
DO NOT SUCK nozzles on EVAP canister. Fuel vapor inside
EVAP canister is harmful.
1) Disconnect vacuum hoses from EVAP canister and remove
EVAP canister.
2) When air is blown into tank pipe, there should be no restriction
of flow through purge pipe and air pipe.
If operation differs from above description, EVAP canister must
be replaced.
3) Install EVAP canister and connect hoses to canister.
TANK PRESSURE CONTROL VALVE INSPECTION
WARNING:
DO NOT SUCK air through tank pressure control valve.
Fuel vapor inside the valve is harmful.
1) Remove tank pressure control valve.
2) Air should pass through valve smoothly from fuel tank side
(black side of tank pressure control valve) to orange side when
blown hard.
3) From orange side, even when blown softly, air should come out
of black side.
4) If air doesn’t pass though valve in step 2) or hard blow is required
in step 3), replace tank pressure control valve.
5) Install tank pressure control valve.
NOTE:
When connecting tank pressure control valve between
hoses, refer to figure at the left for installing direction.
PCV SYSTEM
NOTE:
Be sure to check that there is no obstruction in PCV valve or
its hoses before adjusting engine idle speed, for obstructed
PCV valve or hose hampers its accurate adjustment.
PCV HOSE INSPECTION
Check hoses for connection, leakage, clog and deterioration.
Replace as necessary.

ENGINE AND EMISSION CONTROL SYSTEM (TBI FOR G10) 6E1-35
1. PCV valve
1. Proper size hose
2. Blow air
3. PCV valve
PCV VALVE INSPECTION
1) Disconnect PCV hose from PCV valve.
2) Run engine at idle.
3) Place your finger over end of PCV valve to check for vacuum.
If there is no vacuum, check for clogged valve. Replace as nec-
essary.
4) After checking vacuum, stop engine and check PCV valve for
sticking.
With engine stopped, connect a new hose to PCV valve for in-
spection.
Blow air into the hose and check that air flows with difficulty from
cylinder head side to intake manifold side.
If air flows without difficulty, valve is stuck in “Open” position. Re-
place PCV valve.
WARNING:
Do not suck air through PCV valve. Petroleum substances
inside the valve and fuel vapor inside the intake manifold
are harmful.
5) After removing the hose, connect PCV hose and clamp securely.

1. Accelerator cable
3. Lock nut
ENGINE AND EMISSION CONTROL SYSTEM (SFI FOR G13) 6E2-13
ON-VEHICLE SERVICE
ACCELERATOR CABLE ADJUSTMENT
1) With throttle valve closed, check accelerator pedal play which
should be within following specification.
Pedal play “a”: 2 – 7 mm (0.08 – 0.27 in.)
If measured value is out of specification, adjust it to specification
with cable adjusting nut (2).
2) With accelerator pedal depressed fully (1), check clearance be-
tween throttle lever (2) and lever stopper (3) (throttle body)
which should be within following specification.
Clearance “b” : 0.5 – 2.0 mm (0.02 – 0.07 in.)
(With pedal
depressed fully)
If measured value is out of specification, adjust it to specification
with cable adjusting nut.