2000 SUZUKI SWIFT engine coolant

6E1-22 ENGINE AND EMISSION CONTROL SYSTEM (TBI FOR G10)
( ) for reference kΩ
TEMPERATURE 0
3220
6840
10460
14080C
176F (5.74)
2.28–2.61
(1.15)
(0.584)
0.303–0.326
1. ECT sensor
2. Distributor
INSPECTION
Immerse temperature sensing part of ECT sensor in water (or ice)
and measure resistance between sensor terminals while heating
water gradually.
If measured resistance doesn’t show such characteristic as shown
in left figure, replace ECT sensor.
INSTALLATION
Reverse removal procedure noting the following.

Clean mating surfaces of ECT sensor and thermostat case.

Check O-ring for damage and replace if necessary.

Tighten ECT sensor to specified torque.
Tightening Torque
(a): 15 N
.m (1.5 kg-m, 11.0 lb-ft)

Connect coupler to ECT sensor securely.

Refill coolant referring to Section 6B.

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.

12 W / R “N”-range signal (A / T)
13 R Heated oxygen sensor-2
14 Y / R “D”-range signal (A / T)
15 R / W “R”-range signal (A / T)
16 Lg / B A / C SW signal
17 R / W EGR valve (stepper motor coil 4)
18 P / G Radiator fan relay
19 Y / Bl Fuel pump relay
20 —— ———
21 W / B “P”-range signal (A / T)
22 P / Bl Fuel level gauge
23 R / B “L”-range signal (A / T)
24 —— ———
1 V Malfunction indicator lamp
Vehicle speed sensor (M / T)
Output shaft speed sensor (+)
(A / T)
3 —— ———
4 G / W Shift solenoid – A (A / T)
5 Gr Throttle position (TP) sensor
6 B / W Ignition switch signal
7 Y / B Data link connector
Output shaft speed sensor (–)
(A / T)
9 —— ———
10 G GND for HO2S-2
11 G / Or Shift solenoid – B (A / T)
12 —— ———
13 —— ———
14 —— ———
15 —— ———
16 Br Tachometer signal
17 B / Y Engine start signal
CON-
NECTORTERMINALWIRE
COLORCIRCUITCON-
NECTORTERMINALWIRE
COLORCIRCUIT
20
Br / Y 19
Br / W
C02 C01C02
C03
Wire color
B : Black
B / Or : Black / Orange
B / W : Black / White
B / Y : Black / Yellow
Bl : Blue
Bl / Or : Blue / Orange
Bl / B : Blue / Black
Bl / R : Blue / Red
Bl / Y : Blue / Yellow
Br : Brown
Br / W : Brown / White
Br / Y : Brown / Yellow
G : Green
G / Or : Green / Orange
G / R : Green / Red
G / W : Green / White
Gr : Gray
Gr / R : Gray / Red
Lg / B : Lightgreen / Black
Lg / R : Lightgreen / RedP : Pink
P / Bl : Pink / Blue
P / G : Pink / Green
V : Violet
V / G : Violet / Green
V / R : Violet / Red
V / W : Violet / White
W : White
W / B : White / Black
W / R : White / Red
R : Red
R / B : Red / Black
R / Bl : Red / Blue
R / G : Red / Green
R / W : Red / White
R / Y : Red / Yellow
Y / B : Yellow / Black
Y / Bl : Yellow / Blue
Y / R : Yellow / Red
2
P
8
Bl
6E2-12 ENGINE AND EMISSION CONTROL SYSTEM (SFI FOR G13)
1 B Ground for ECM / PCM
2 B / Or Ground for drive circuit
3 B / Or Ground for drive circuit
4 V / R Canister purge valve
5 G / W Power steering pressure switch
6 V / W IAC valve
7 Bl Heater of HO2S-1
8 Bl / Or No.4 fuel injector
9 Bl / R No.1 fuel injector
10 G Ground for sensor circuit
11 B / W CMP sensor
12 —— ———
13 R Heated oxygen sensor-1
14 Lg / R Coolant temp. sensor
15 Gr / R Intake air temp. sensor
16 —— ———
17 Br / Y Electric load (+)
18 —— ———
IG coil assembly for
No.2 and 3 spark plugs
IG coil assembly for
No.1 and 4 spark plugs
21 Bl / B No.2 fuel injector
22 P Power supply for sensor
23 W CKP sensor (+)
24 B CKP sensor (–)
25 —— ———
26 G MAP sensor
27 —— ———
28 V / G Immobilizer indicator lamp
29 —— ———
30 —— ———
31 Bl / Y No.3 fuel injector
1 G / R A / C compressor clutch
2 R / Y EGR valve (stepper motor coil 1)
3 R / G Data link connector
4 Lg / B Heater of HO2S-2
5 R / B Power source
6 R / B Power source
7 W Backup power source
8 R EGR valve (stepper motor coil 3)
9 R / Bl EGR valve (stepper motor coil 2)
10 Gr Ground for main relay
11 Y / B “2”-range signal (A / T)

6E2-16 ENGINE AND EMISSION CONTROL SYSTEM (SFI FOR G13)
1
2
5) Disconnect electric coupler from TP sensor (2) and IAC valve
(3).
6) Remove throttle body from intake manifold.
7) Disconnect engine coolant hoses (1) from throttle body.
Disassembly
NOTE:
While disassembling and assembling throttle body, use spe-
cial care not to deform levers on throttle valve shaft or cause
damage to any other parts.
1) Remove TP sensor and IAC valve from throttle body.
Cleaning
Clean throttle body bore (1) and idle air passage (2) by blowing
compressed air.
NOTE:
TP sensor, idle air control valve or other components contain-
ing rubber must not be placed in a solvent or cleaner bath. A
chemical reaction will cause these parts to swell, harden or get
distorted.
Reassembly
1) Install IAC valve to throttle body referring to “IAC valve Installa-
tion” section.
2) Install TP sensor to throttle body referring to “TP sensor Installa-
tion” section.
Installation
1) Clean mating surfaces and install throttle body gasket to intake
manifold.
Use new gasket.

21
ENGINE AND EMISSION CONTROL SYSTEM (SFI FOR G13) 6E2-17
2) Connect engine coolant hoses (1).
3) Install throttle body (4) to intake manifold.
4) Connect coupler to TP sensor (2) and IAC valve (3) securely.
5) Install air cleaner outlet hose (1) and pipe.
6) Connect accelerator cable and adjust cable play to specifica-
tion.
7) Refill cooling system.
8) Connect negative cable at battery.
IDLE AIR CONTROL VALVE (IAC VALVE)
Removal
1) Remove throttle body from intake manifold referring to “Throttle
Body Removal” section.
2) Remove IAC valve from throttle body.
Inspection
1) Connect each connector to IAC valve (1), TP sensor and IAT
sensor.
2) Check that rotary valve (2) of lAC valve opens and closes once
and then stops in about 60 ms as soon as ignition switch is
turned ON.
NOTE:

This check should be performed by two people, one per-
son turns on ignition switch while the other checks valve
operation.

As valve operation is momentary, it may be overlooked.
To prevent this, perform this operation check 3 times or
more continuously.
If rotary valve of lAC valve does not operate at all, check
wire harness for open and short. If wire harness is in good
condition, replace lAC valve and recheck.

2.297 – 2.595
0.298 – 0.320
6E2-30 ENGINE AND EMISSION CONTROL SYSTEM (SFI FOR G13)
ENGINE COOLANT TEMPERATURE SENSOR
(ECT SENSOR)
Removal
1) Disconnect battery negative cable at battery.
2) Drain coolant referring to Section 6B.
WARNING:
To help avoid danger of being burned, do not remove ra-
diator cap while engine and radiator are still hot.
Scalding fluid and steam can be blown out under pres-
sure if cap is taken off too soon.
3) Disconnect coupler from ECT sensor.
4) Remove ECT sensor (1) from thermostat case.
Inspection
Immerse temperature sensing part of ECT sensor (1) in water (or
ice) and measure resistance between terminal “A” and “B” while
heating water gradually.
If measured resistance doesn’t show such characteristic as shown
in left figure, replace ECT sensor (1).
Installation
Reverse removal procedure noting the following:

Clean mating surfaces of ECT sensor (1) and thermostat case.

Check O-ring for damage and replace if necessary.

Tighten ECT sensor (1) to specified torque.
Tightening Torque
(a): 12 N
.m (1.2 kg-m, 9.0 lb-ft)

Connect coupler to ECT sensor (1) securely.

Refill coolant referring to Section 6B.

1
2
1. SUZUKI scan tool display
2. EGR valve opening (0: Close, 100: Full Open)
ENGINE AND EMISSION CONTROL SYSTEM (SFI FOR G13) 6E2-35
2) Connect battery (1) to radiator fan motor coupler (2) as shown
in figure, then check that the radiator fan motor operates
smoothly.
If radiator fan motor does not operate smoothly, replace motor.
EMISSION CONTROL SYSTEM
EGR SYSTEM
System Inspection (using SUZUKI scan tool)
1) Connect SUZUKI scan tool to DLC with ignition switch OFF.
2) Turn ignition switch ON and then select “DATA LIST” mode on
scan tool.
3) Make sure that vehicle condition is as following.

Vehicle speed = 0 KPH

Engine coolant temp.
80C

Engine speed  3000 rpm
4) Clear DTC by using “CLEAR INFO” mode.
5) With engine idling (without depressing accelerator pedal), open
EGR valve by using “STEP EGR” mode in “MISC TEST” menu.
In this state, according as EGR valve opening increases engine
idle speed drops. If not, possible cause is clogged EGR gas pas-
sage, stuck or faulty EGR valve, poor performance of ECT sen-
sor or TP sensor or DTC and / or pending DTC is (are) stored in
ECM memory.
Removal
1) Disconnect negative cable at battery.
2) Disconnect EGR valve coupler.
3) Remove EGR valve and gasket from intake manifold.