cooling fan SUZUKI SWIFT 2000 1.G RG413 Service User Guide

AIR CONDITIONING (OPTIONAL) 1B-31
Tighten receiver/dryer cap to specified torque
Tightening torque
Receiver / dryer cap : 13 N·m (1.3 kg-m, 9.5 lb-ft)
Replenish specified amount of compressor oil to compressor
suction side by referring to “REPLENISHING COMPRES-
SOR OIL” in this section.
RADIATOR/CONDENSER COOLING FAN
MOTOR
REMOVAL AND INSTALLATION
For details, refer to “RADIATOR” in Section 6B.
INSPECTION
1) Check continuity terminal “a” – “b” and “c” – “d” about the
radiator/condenser cooling fan motor (1).
If check results are no continuity, replace radiator/condenser
cooling fan motor.
2) Check no continuity “a” – “c” and “b” – “d” about the radiator/
condenser cooling fan motor (1).
If check result are continuity, replace radiator/condenser
cooling fan motor.
3) Connect battery to radiator/condenser cooling fan motor ter-
minal “a” – “b” and “c” – “d” as shown in figure, then check
that the radiator/condenser cooling fan motor operates
smoothly.
Reference current of radiator/condenser cooling fan
motor at 12 V
“a” – “b” : 7.8 – 11.8 A
“c” – “d” : 4.8 – 8.8 A

1B-36 AIR CONDITIONING (OPTIONAL)
A/C SWITCH
REMOVAL AND INSTALLATION
Refer to “HEATER CONTROL ASSEMBLY” in Section 1A.
INSPECTION
Press A/C switch button and check if there is continuity
between terminals “A” and “B”.
Connect battery voltage (+) to terminal “C” and (–) to termi-
nal “A”, and then press A/C Switch button and check if indi-
cator lamp lights.
RADIATOR/CONDENSER COOLING FAN
MOTOR RELAY No.1, No.2 and No.3
INSPECTION
Refer to “RADIATOR FAN RELAY” in Section 6B.
COMPRESSOR
REMOVAL
1) Run engine at idle speed with air conditioning ON for 10 min-
utes. After that stop the engine.
2) Disconnect negative (–) cable at battery.
3) Recover refrigerant from refrigeration system by referring to
“RECOVERY” in this section.
4) Remove front bumper by referring to “FRONT BUMPER” in
Section 8.
5) Remove engine food cover (1) from vehicle body.
NOTE:
The amount of removed compressor oil must be mea-
sured for replenishing compressor oil.

6-2 ENGINE GENERAL INFORMATION AND DIAGNOSIS
ENGINE DIAGNOSIS ......................................... 6-6
GENERAL DESCRIPTION ............................. 6-6
ON-BOARD DIAGNOSTIC SYSTEM
(VEHICLE WITH IMMOBILIZER INDICATOR
LAMP) ............................................................. 6-7
ON-BOARD DIAGNOSTIC SYSTEM
(VEHICLE WITHOUT IMMOBILIZER
INDICATOR LAMP) ...................................... 6-10
PRECAUTION IN DIAGNOSING
TROUBLE ..................................................... 6-11
ENGINE DIAGNOSTIC FLOW TABLE ......... 6-12
CUSTOMER PROBLEM INSPECTION
FORM (EXAMPLE) ................................... 6-14
MALFUNCTION INDICATOR LAMP (MIL)
CHECK...................................................... 6-15
DIAGNOSTIC TROUBLE CODE (DTC)
CHECK...................................................... 6-15
DIAGNOSTIC TROUBLE CODE (DTC)
CLEARANCE ............................................ 6-16
DIAGNOSTIC TROUBLE CODE (DTC)
TABLE ....................................................... 6-17
FAIL-SAFE TABLE.................................... 6-20
VISUAL INSPECTION .............................. 6-22
ENGINE BASIC INSPECTION.................. 6-23
ENGINE DIAGNOSIS TABLE ................... 6-26
SCAN TOOL DATA....................................... 6-31
INSPECTION OF ECM AND ITS
CIRCUITS ..................................................... 6-36
ECM VOLTAGE VALUES TABLE............. 6-37
TERMINAL RESISTANCE TABLE............ 6-43
COMPONENT LOCATION ........................... 6-45
TABLE A-1 MALFUNCTION INDICATOR
LAMP CIRCUIT CHECK - LAMP DOES NOT
COME “ON” AT IGNITION SWITCH ON
(BUT ENGINE AT STOP) ............................. 6-46
TABLE A-2 MALFUNCTION INDICATOR
LAMP CIRCUIT CHECK - LAMP REMAINS
“ON” AFTER ENGINE STARTS ................... 6-47
TABLE A-3 MIL CHECK - MIL FLASHES
AT IGNITION SWITCH ON (VEHICLE
WITHOUT IMMOBILIZER INDICATOR
LAMP) ........................................................... 6-48
TABLE A-4 MIL CHECK - MIL DOES NOT
FLASH OR JUST REMAINS ON EVEN
WITH GROUNDING DIAGNOSIS SWITCH
TERMINAL (VEHICLE WITHOUT
IMMOBILIZER INDICATOR LAMP) .............. 6-48
TABLE A-5 ECM POWER AND GROUND
CIRCUIT CHECK - MIL DOESN’T LIGHT
AT IGNITION SWITCH ON AND ENGINE
DOESN’T START THOUGH IT IS
CRANKED UP .............................................. 6-49
DTC P0105 (DTC NO.11) MANIFOLD
ABSOLUTE PRESSURE (MAP) CIRCUIT
MALFUNCTION ............................................ 6-52
DTC P0110 (DTC NO.18) INTAKE AIR
TEMP. (IAT) CIRCUIT MALFUNCTION ....... 6-55
DTC P0115 (DTC NO.19) ENGINE
COOLANT TEMPERATURE (ECT) CIRCUIT
MALFUNCTION ............................................ 6-57DTC P0120 (DTC NO.13) THROTTLE
POSITION CIRCUIT MALFUNCTION ........... 6-60
DTC P0121 THROTTLE POSITION CIRCUIT
RANGE/PERFORMANCE PROBLEM .......... 6-63
DTC P0130 (DTC NO.14) HEATED OXYGEN
SENSOR (HO2S) CIRCUIT MALFUNCTION
(SENSOR-1) .................................................. 6-66
DTC P0133 HEATED OXYGEN SENSOR
(HO2S) CIRCUIT SLOW RESPONSE
(SENSOR-1) .................................................. 6-68
DTC P0134 HEATED OXYGEN SENSOR
(HO2S) CIRCUIT NO ACTIVITY DETECTED
(SENSOR-1) .................................................. 6-69
DTC P0135 (DTC NO.14) HEATED OXYGEN
SENSOR (HO2S) HEATER CIRCUIT
MALFUNCTION (SENSOR-1) ....................... 6-70
DTC P0136 HEATED OXYGEN SENSOR
(HO2S) CIRCUIT MALFUNCTION
(SENSOR-2) .................................................. 6-72
DTC P0141 HEATED OXYGEN SENSOR
(HO2S) HEATER CIRCUIT MALFUNCTION
(SENSOR-2) .................................................. 6-74
DTC P0171 FUEL SYSTEM TOO LEAN ....... 6-76
DTC P0172 FUEL SYSTEM TOO RICH ....... 6-76
DTC P0300 RANDOM MISFIRE DETECTED
(MISFIRE DETECTED AT 2 OR MORE
CYLINDERS) ................................................. 6-81
DTC P0301 CYLINDER 1 MISFIRE
DETECTED ................................................... 6-81
DTC P0302 CYLINDER 2 MISFIRE
DETECTED ................................................... 6-81
DTC P0303 CYLINDER 3 MISFIRE
DETECTED ................................................... 6-81
DTC P0304 CYLINDER 4 MISFIRE
DETECTED ................................................... 6-81
DTC P0325 (DTC NO.17) KNOCK SENSOR
CIRCUIT MALFUNCTION ............................. 6-86
DTC P0335 (DTC NO.23) CRANKSHAFT
POSITION (CKP) SENSOR CIRCUIT
MALFUNCTION ............................................. 6-88
DTC P0340 (DTC NO.15) CAMSHAFT
POSITION (CMP) SENSOR CIRCUIT
MALFUNCTION ............................................. 6-91
DTC P0400 EXHAUST GAS
RECIRCULATION FLOW MALFUNCTION ... 6-94
DTC P0420 CATALYST SYSTEM
EFFICIENCY BELOW THRESHOLD ............ 6-97
DTC P0443 PURGE CONTROL VALVE
CIRCUIT MALFUNCTION ........................... 6-100
DTC P0480 RADIATOR COOLING FAN
CONTROL SYSTEM MALFUNCTION ........ 6-101
DTC P0500 (DTC NO.16) VEHICLE SPEED
SENSOR (VSS) MALFUNCTION ................ 6-103
DTC P0505 (DTC NO.26) IDLE CONTROL
SYSTEM MALFUNCTION ........................... 6-105
DTC P1450 BAROMETRIC PRESSURE
SENSOR LOW/HIGH INPUT....................... 6-108
DTC P1451 BAROMETRIC PRESSURE
SENSOR PERFORMANCE PROBLEM ...... 6-108

6-18 ENGINE GENERAL INFORMATION AND DIAGNOSIS
P0141 HO2S heater circuit mal-
function (Sensor-2)Terminal voltage is lower than specifica-
tion at heater OFF or it is higher at heater
ON. (or heater circuit or short)2 driving
cyclesNot
applicable
P0171 Fuel system too lean Short term fuel trim or total fuel trim (short
and long terms added) is larger than spec-
ification for specified time or longer.
(fuel trim toward rich side is large.)2 driving
cyclesNot
applicable
P0172 Fuel system too rich Short term fuel trim or total fuel trim (short
and long term added) is smaller than spec-
ification for specified time or longer.
(fuel trim toward lean side is large.)2 driving
cyclesNot
applicable
P0300
P0301
P0302
P0303
P0304Random misfire detected
Cylinder 1 misfire detected
Cylinder 2 misfire detected
Cylinder 3 misfire detected
Cylinder 4 misfire detectedMisfire of such level as to cause damage
to three way catalystMIL
flashing
during
misfire
detectionNot
applicable
Misfire of such level as to deteriorate emis-
sion but not to cause damage to three way
catalyst2 driving
cyclesNot
applicable
P0325
(No.17)Knock sensor circuit mal-
functionKnock sensor circuit low input
Knock sensor circuit high input1 driving
cycle1 driving
cycle
P0335
(No.23)Crankshaft position sensor
circuit malfunctionNo signal for 2 sec. during engine cranking 1 driving
cycle1 driving
cycle
P0340
(No.15)Camshaft position sensor
circuit malfunctionNo signal during engine running 1 driving
cycle1 driving
cycle
P0400 Exhaust gas recirculation
flow malfunction detectedExcessive or insufficient EGR flow 2 driving
cyclesNot
applicable
P0420 Catalyst system efficiency
below thresholdOutput waveforms of HO2S-1 and HO2S-2
are similar.
(Time from output voltage change of
HO2S-1 to that of HO2S-2 is shorter than
specification.)2 driving
cyclesNot
applicable
P0443 Purge control valve circuit
malfunctionPurge control valve circuit is open or
shorted to ground2 driving
cyclesNot
applicable
P0480 Radiator fan control circuit
malfunctionRadiator cooling fan relay terminal voltage
is low when cooling temp. is lower than
specification2 driving
cyclesNot
applicable
P0500
(No.16)Vehicle speed sensor mal-
functionNo signal while running in “D” range or
during fuel cut at decelerating2 driving
cycles1 driving
cycle
P0505 Idle control system malfunc-
tionNo closed signal to IAC valve is detected 2 driving
cyclesNot
applicable
P0601
(No.71)Internal control module
memory check sum errorData write error (or check sum error) when
written into ECM2 driving
cycles1 driving
cycle
P1450
(No.29)Barometric pressure sen-
sor circuit malfunctionBarometric pressure is lower or higher
than specification. (or sensor malfunction)1 driving
cycle1 driving
cycle DTC
NO.DETECTING ITEM DETECTING CONDITION
(DTC will set when detecting :)MIL
(vehicle
with immo-
bilizer indi-
cator lamp)MIL
(vehicle
without
immobi-
lizer indica-
tor lamp)

ENGINE GENERAL INFORMATION AND DIAGNOSIS 6-101
DTC P0480 RADIATOR COOLING FAN CONTROL SYSTEM MALFUNCTION
WIRING DIAGRAM / CIRCUIT DESCRIPTION
DTC CONFIRMATION PROCEDURE
1) Turn ignition switch OFF.
2) Clear DTC with ignition switch ON.
3) Warm up engine until radiator cooling fan starts to operate.
4) Check pending DTC in “ON BOARD TEST” or “PENDING DTC” mode and DTC in “DTC” mode.
INSPECTION
1. Main relay [A] : Case of TYPE A is shown (See NOTE)
2. Radiator fan relay [B] : Case of TYPE B is shown (See NOTE)
3. Radiator fan motor
BATT
80A30A
15A
BLKBLU/WHT
ECM
BLK/ORN
BLK/ORNC42-1
C42-3
L
L–
H– H
No.1
No.2
No.3
BLU
C42 (31P) C41 (24P) G02 (17P)1 2 3 4 5 6 7 8 9
10 11 12 13 14 15 16 17 18 19 20 21
22 23 24 25 26 28 27 29 30 315 6
1 2 3 4 5 6 7
11 12
9 10 11 13 12 14 15 16
16 171 2
7 8
13 14 3 4
9 10
15 17 188
19 20 21 22 23 24
C41-18
GRN/RED [B]PPL/YEL [A]
BLK/RED
BLU/WHT
BLU/RED
BLK
BLU
BLU/BLK
PPL/YEL
BLU/RED
BLK/YEL
1
BRN/WHT
2
3
2
2
G02-3 [A]
C41-9 [B]
NOTE:
For TYPE A and TYPE B, refer to NOTE in “ECM VOLTAGE VALUES TABLE” for applicable model.
DTC DETECTING CONDITION POSSIBLE CAUSE
Low voltage at terminal C41-18 when engine coolant
temp. is below 97.5°C, 207.5°F.
✱2 driving cycle detection logic, continuous monitoring.“BLK/RED” or “BLU” circuit open or short
Radiator cooling fan relay malfunction
ECM malfunction
Step Action Yes No
1Was “ENGINE DIAG. FLOW TABLE” performed? Go to Step 2. Go to “ENGINE DIAG.
FLOW TABLE”.
2 Check Radiator Cooling Fan Relay and Its Circuit.
1) Turn ignition switch ON.
2) Check for voltage at terminal C41-18 of ECM
connector connected, under following condition.
See Fig. 1.
When engine coolant temp. is lower than
97.5°C, 207.5°F and A/C switch turns OFF : 10
– 14 V
Is voltage as specified?Intermittent trouble or
faulty ECM.
Check for intermittent
referring to “Intermittent
and Poor Connection” in
Section 0A.Go to Step 3.

6-102 ENGINE GENERAL INFORMATION AND DIAGNOSIS
Fig. 1 for Step 2
Fig. 2 for Step 3
Fig. 3 for Step 33 Check Radiator Cooling Fan Control Relay.
1) Turn ignition switch OFF and remove radiator
cooling fan relay.
2) Check for proper connection to the relay at
“BLK/RED”, “BLU”, “BLU/RED” and “BLU/BLK”
wire terminals.
3) If OK, then measure resistance between termi-
nals a and b. See Fig. 2 and 3.
Is it 56 – 146 Ω?“BLK/RED” or “BLU” cir-
cuit open or short.
If wires and connections
are OK, substitute a
known-good ECM and
recheck.Replace radiator cool-
ing fan relay. Step Action Yes No
1. Radiator fan relay No.11

6-128 ENGINE GENERAL INFORMATION AND DIAGNOSIS
TABLE B-7 RADIATOR FAN CONTROL SYSTEM CHECK
INSPECTION
1. Radiator fan relay No.1 3. Radiator fan relay No.3 [A] : Case of TYPE A is shown (See NOTE)
2. Radiator fan relay No.2 4. Radiator fan [B] : Case of TYPE B is shown (See NOTE)
BATT
80A30A
15A
BLKBLU/WHT
ECM
BLK/ORN
BLK/ORNC42-1
C42-3
L+
L–
H– H+
BLU
C42 (31P) C41 (24P) G02 (17P)1 2 3 4 5 6 7 8 9
10 11 12 13 14 15 16 17 18 19 20 21
22 23 24 25 26 28 27 29 30 315 6
1 2 3 4 5 6 7
11 12
9 10 11 13 12 14 15 16
16 171 2
7 8
13 14 3 4
9 10
15 17 188
19 20 21 22 23 24
C41-18
GRN/RED [B]PPL/YEL [A]
BLK/RED
BLU/WHT
BLU/RED
BLK
BLU
BLU/BLK
PPL/YEL
BLU/REDBLK/YEL
BRN/WHT
1
2
34
G02-3 [A]
C41-9 [B]
NOTE:
For TYPE A and TYPE B, refer to NOTE in “ECM VOLTAGE VALUES TABLE” for applicable model.
Step Action Yes No
1 Check 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 97.5°C, 208°F 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.
2 Check Radiator 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.
3 Check Radiator Fan Relays.
1) Turn ignition switch OFF and remove radiator cooling
fan relays. (No.1 – No.3)
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 radia-
tor fan relay(s).

ENGINE GENERAL INFORMATION AND DIAGNOSIS 6-129
Fig. 1 for Step 1
Fig. 2 for Step 34 Check Radiator Fan.
1) Turn ignition switch OFF.
2) Disconnect cooling fan motor connector.
3) Check for proper connection to motor at “BLU/RED”
and “BLK” terminals.
4) If OK, connect battery to motor and check for operation.
See Fig. 3.
Is it in good condition?“BLU/WHT”, “BLU/
RED” or “BLK” circuit
open.Replace radia-
tor fan motor. Step Action Yes No
[A] : When using SUZUKI scan tool:[ A]
1. Radiator fan No.1
2. Radiator fan No.2
3. Radiator fan No.3
1
1
2
3
2, 3ca
db

ENGINE COOLING 6B-1
6B
SECTION 6B
ENGINE COOLING
CONTENTS
GENERAL DESCRIPTION ...............................6B-2
COOLING SYSTEM CIRCULATION............. 6B-2
COOLANT ..................................................... 6B-3
DIAGNOSIS ......................................................6B-4
DIAGNOSIS TABLE ...................................... 6B-4
SYSTEM CIRCUIT ........................................ 6B-5
SYSTEM CIRCUIT INSPECTION ................. 6B-5
MAINTENANCE................................................6B-6
COOLANT LEVEL CHECK ........................... 6B-6
ENGINE COOLING SYSTEM
INSPECTION AND SERVICE ....................... 6B-7
COOLING SYSTEM FLUSH AND REFILL ... 6B-7
WATER PUMP/GENERATOR DRIVE
BELT TENSION INSPECTION AND
ADJUSTMENT .............................................. 6B-9
ON-VEHICLE SERVICE .................................6B-10SYSTEM COMPONENTS .......................... 6B-10
COOLING SYSTEM DRAINING ................. 6B-11
COOLING SYSTEM REFILL ...................... 6B-11
COOLING WATER PIPES OR HOSES ...... 6B-12
THERMOSTAT ........................................... 6B-12
RADIATOR ................................................. 6B-14
RADIATOR AND CONDENSER
COOLING FAN ........................................... 6B-15
RADIATOR AND CONDENSER
COOLING FAN RELAY .............................. 6B-15
WATER PUMP/GENERATOR
DRIVE BELT ............................................... 6B-15
WATER PUMP............................................ 6B-16
ECT SENSOR............................................. 6B-18
REQUIRED SERVICE MATERIAL................. 6B-18
TIGHTENING TORQUE SPECIFICATION..... 6B-18

6B-2 ENGINE COOLING
GENERAL DESCRIPTION
The cooling system consists of the radiator cap, radiator, coolant reservoir tank, hoses, water pump, cooling fan
and thermostat. The radiator is of tube-and-fin type.
COOLING SYSTEM CIRCULATION
While the engine is warmed up (thermostat closed), coolant circulates as follows.
When coolant is warmed up to normal temperature and the thermostat opens, coolant passes through the radi-
ator core to be cooled as well as the above flow circuit.
1. Radiator inlet hose 5. Water pump 9. Heater outlet hose
2. Radiator outlet hose 6. Throttle body (Fast idle control plunger) 10. Radiator
3. Water inlet pipe 7. Engine
4. Thermostat 8. Heater inlet hose
Water pump Cylinder block
Thermostat closedCylinder head Water intake pipeThrottle body
Heater unit