2005 SUZUKI SWIFT Fan temp switch

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Component Location
Electronic Control System Components LocationS7RS0B1103001
NOTE
The figure shows left-hand steering vehicle. For right-hand steering vehicle, parts with (*) are installed
at the opposite side.

I*
E*
G*
D
K H*
J
C*
7
A
F
c
L
i m
f
B*
e
g
k
l
13
3*
4
j
10 12 h
58
a
9
b
1
5-1
d
2
11
6
14*
I7RS0B110011-02
Information sensors Control devices Others
1. MAF and IAT sensor a: Fuel injectorA: ECM
2. TP sensor b: EVAP canister purge valve B: Combination meter
3. Brake light switch c: Fuel pump relayC: EVAP canister
4. ECT sensor d: EGR valveD: A/C evaporator outlet air temp. sensor (manual A/C model)
5. HO2S-1 e: MILE: Data link connector
5-1. HO2S-2 f: Radiator cooling fan relay No.3F: A/C compressor relay
6. Wheel speed sensor (VSS) g: Immobilizer indicator lightG: TCM (A/T model)
7. Battery h: Ignition coil assembly (with ignitor) H: BCM (included in junction block assembly)
8. CMP sensor i: Main relayI: Immobilizer coil antenna
9. MAP sensor j: Oil control valveJ: EPS control module
10. CKP sensor k: Radiator cooling fan relay No.2K: A/C refrigerant pressure sensor
11. Fuel level sensor l: Radiator cooling fan relay No.1L: Diagnosis connector (Hong Kong model)
12. Knock sensor m: Starting motor control relay
13. Electric load current sensor
14. APP sensor

Downloaded from www.Manualslib.com manuals search engine 1A-32 Engine General Information and Diagnosis:
) P0117 Engine coolant temperature circuit low • EC M controls actuators assuming that engine
coolant temperature is 80 °C (176 °F).
• ECM operates radiator cooling fan.
)
P0118 Engine coolant temperature circuit high
) P0122 Throttle/pedal position sensor/switch/“A” (main)
circuit low • ECM turns off throttle actuator control relay and
throttle valve is fixed at the specified opening from
its completely closed position (default opening).
For details, refer to “Description of Electric
Throttle Body System”.
• ECM controls fuel cut at specified engine speed.
• ECM stops air/fuel ratio control.
)
P0123 Throttle/pedal position sensor/switch/“A” (main)
circuit high
) P0222 Throttle/pedal position sensor/switch/“B” (sub)
circuit low
) P0223 Throttle/pedal position sensor/switch/“B” (sub)
circuit high
) P0131 O2 sensor (HO2S) circuit low voltage (Sensor-1)
ECM stops air/fuel ratio control.
)
P0132 O2 sensor (HO2S) circuit high voltage (Sensor-1)
) P0134 O2 sensor (HO2S) circuit no activity detected
(Sensor-1)
) P0335 Crankshaft position sensor “A” circuit • Ignition timing is fixed.
• ECM changes injection control system from
sequential injection to simultaneous one.
) P0340 Camshaft position sensor “A” circuit ECM changes injection
control system from
sequential injection to simultaneous one.
) P0500 Vehicle speed sensor “A” • ECM controls actuators assuming that vehicle
speed is 0 km/h (0 mile/h).
• ECM stops IAC feedback control.
) P2101 Throttle actuator control motor circuit range /
performance • ECM turns off throttle actuator control relay and
throttle valve is fixed at the specified opening from
its completely closed position (default opening).
For details, refer to “Description of Electric
Throttle Body System”.
• ECM controls fuel cut at specified engine speed.
• ECM stops air/fuel ratio control.
)
P2102 Throttle actuator control motor circuit low
) P2103 Throttle actuator control motor circuit high ECM controls fuel cut at specified engine speed.
) P2111 Throttle actuator control system – stuck open • EC M turns off throttle actuator control relay and
throttle valve is fixed at the specified opening from
its completely closed position (default opening).
For details, refer to “Description of Electric
Throttle Body System”.
• ECM controls fuel cut at specified engine speed.
• ECM stops air/fuel ratio control.
)
P2112 Throttle actuator control system – stuck closed
) P2119 Throttle actuator control throttle body range /
performance • ECM turns off throttle actuator control relay and
throttle valve is fixed at the specified opening from
its completely closed position (default opening).
For details, refer to “Description of Electric
Throttle Body System”.
• ECM controls fuel cut at specified engine speed.
DTC No.
Detected item Fail-safe operation

Downloaded from www.Manualslib.com manuals search engine Engine General Information and Diagnosis: 1A-33
Scan Tool DataS7RS0B1104007
As the data values are standard values estimated on the basis of values obtained from the normally operating vehicles
by using a scan tool, use them as re ference values. Even when the vehicle is in good condition, there may be cases
where the checked value does not fall within each specified data range. Therefore, judgment as abnormal should not
be made by checking with these data alone.
Also, conditions that can be checked by the scan tool are those detected by ECM and output from ECM as commands
and there may be cases where the engine or actuator is not operating (in the condition) as indicated by the scan tool.
Be sure to use the timing light to check the ignition timing.
NOTE
• There are two types of OBD system depending on the vehicle specification.
For details, refer to “Precaution on On-Board Diagnostic (OBD) System”.
• With the generic scan tool, only star (*) marked data in the following table can be read.
• When checking the data with the engine running at idle or racing, be sure to shift M/T gear to the neutral position and A/T gear to the “Park” position and pull the parking brake fully. Also, if nothing
or “no load” is indicated, turn O FF A/C (if equipped with A/C), all electric loads, P/S and all the other
necessary switches.

) P2122 Throttle/pedal position sensor/switch/“D” (main)
circuit low input
• ECM turns off throttle actuator control relay and throttle valve is fixed at the specified opening from
its completely closed position (default opening).
For details, refer to “Description of Electric
Throttle Body System”.
• ECM controls fuel cut at specified engine speed.
• ECM stops air/fuel ratio control.
)
P2123 Throttle/pedal position sensor/switch/“D” (main)
circuit high input
) P2127 Throttle/pedal position sensor/switch/“E” (sub)
circuit low input
) P2128 Throttle/pedal position sensor/switch/“E” (sub)
circuit high input
) P2135 Throttle/pedal position sensor/switch/“A”/“B”
(main) / (sub) voltage correction
) P2138 Throttle pedal position sensor/switch “D”/“E”
(main) / (sub) voltage correlation
) P2227 Barometric pressure sensor performance problem ECM controls actuators assuming that barometric
pressure is 101.33 kPa (762 mmHg).
DTC No. Detected item Fail-safe operation
Scan tool data
Vehicle condition Normal condition /
reference values
* ) COOLANT TEMP At specified idle speed after warming up 80 – 100 °C, 176 – 212 °F
* ) INTAKE AIR TEMP. At specifie d idle speed after warming up –5
°C (23 °F) + environmental
temp. to 40 °C (104 °F) +
environmental temp.
* ) ENGINE SPEED It idling with no load after warming upDesired idle speed ± 50 rpm
) INJ PULSE WIDTH At specified idle speed with no load after warming up
2.0 – 4.0 msec.
At 2500 r/min. with no load after warming up 2.0 – 3.6 msec.
) DESIRED IDLE It idling with radiator cooling fan stopped and all electrical
parts turned OFF after warming up, M/T at neutral 700 rpm
* ) SHORT FT B1 At specified idle speed after warming up –20 – +20%
* ) LONG FT B1 At specified idle speed after warming up –20 – +20%
) TOTAL FUEL TRIM
B1 At specified idle speed after warming up
–35 – +35%
* ) MAF At specified idle speed wit
h no load after warming up 1.0 – 4.0 g/s 0.14 – 0.52 lb/
min.
At 2500 r/min. with no load after warming up 4.0 – 12.0 g/s 0.53 – 1.58 lb/
min.
* ) CALC LOAD At specified idle speed with no load after warming up
18 – 28%
At 2500 r/min. with no load after warming up 13 – 23%
* )
THROTTLE
POSITION Ignition switch ON /
warmed up engine
stoppedAccelerator pedal released
0 – 5%
Accelerator pedal depressed
fully 90 – 100%

Downloaded from www.Manualslib.com manuals search engine 1A-34 Engine General Information and Diagnosis:
*) O2S B1 S1 At specified idle speed after warming up 0.1 – 0.95 V
) O2S B1 S1 ACT At specified id le speed after warming up ACTIVE
* ) O2S B1 S2 At 2000 r/min. for 3 min. or longer after warming up. 0.1 – 0.95 V
) O2S B1 S2 ACT At specified id le speed after warming up ACTIVE
* ) FUEL SYSTEM B1 At specif ied idle speed after warming up CLSD (closed loop)
* ) MAP At specified idle speed with no load after warming up 24 – 38 kPa, 7.1 – 11.2 in.Hg
) BAROMETRIC
PRES —Barometric pressure is
displayed
) STEP EGR FLOW
DUTY At specified idle speed after warming up 0%
) FUEL CUT Engine at fuel cut condition ON
Engine at other than fuel cut condition OFF
) A/C PRESSURE Engine running A/C ON (A/C is operating) at
ambient temperature: 30
°C (86
° F) and humidity: 50% 1350 – 1650 kPa For more
details, refer to pressure of
high pressure gage under “A/C System Performance
Inspection in Section 7B” or “A/C Refrigerant Pressure Sensor and Its Circuit
Inspection in Section 7B”.
A/C OFF (A/C is not operating)
at ambient temperature: 30 ° C
(86 °F) and engine coolant
temperature: 90 – 100 °C (194 –
212 °F) 600 – 1000 kPa After longer
than 10 min from A/C switch turned off
) CLOSED
THROTTLE POS Throttle valve at idle position ON
Throttle valve opens larger than idle position OFF
) CANIST PRG DUTY At specified idle speed after warming up 0%
* ) IGNITION ADVANCE At specified idle s peed with no load after warming up 3 – 13 ° BTDC
) BATTERY VOLTAGE Ignition switch ON / engine at stop 10 – 14 V
) FUEL PUMP Within 2 seconds after ignition switch ON or engine
running
ON
Engine at stop with ignition switch ON OFF
) ELECTRIC LOAD Ignition switch ON / Headligh
t, small light, all turned OFF OFF
Ignition switch ON / Headli ght, small light, turned ON ON
) BRAKE SWITCH Igni tion switch ONBrake pedal is released OFF
Brake pedal is depressed ON
) RADIATOR FAN Ignition switch ON Engin
e coolant temp.: Lower
than 95 °C (203 °F) OFF
Engine coolant temp.: 97.5 °C
(208 °F) or higher ON
) BLOWER FAN Ignition switch ON Blower fan switch: 3rd speed
position or more
ON
Blower fan switch: under 2nd
speed position OFF
) A/C SWITCH Engine running after warming up, A/C not operating
OFF
Engine running after warming up, A/C operating ON
) A/C COMP RELAY Engine running A/C switch and blower motor
switch turned ON
ON
A/C switch and blower motor
switch turned OFF OFF
* ) VEHICLE SPEED At stop 0 km/h (0 mph)
) VVT GAP At specified idle speed after warming up 0 – 3°
) TP SENSOR 1 VOLT Ignition switch ON after
warmed up engine Accelerator pedal released
0.6 – 1.0 V
Accelerator pedal depressed
fully 3.37 – 4.55 V
Scan tool data
Vehicle condition Normal condition /
reference values

Downloaded from www.Manualslib.com manuals search engine 1A-126 Engine General Information and Diagnosis:
3Wire circuit check
1) Disconnect radiator cooling fan relay No. 1 (1) from
individual circuit fuse box No .1 (2) with ignition switch
turned OFF.
2) Turn ON ignition switch, measure voltage between each engine ground to “BLK/RED” and “GRY” wire terminal.
Is voltage 10 – 14 V? Go to Step 4. Open wire in “BLK/RED”
and/or “GRY” wire are
open circuit.
4 Wire circuit check
1) Connect radiator cooling fan relay No. 1 to individual
circuit fuse box No.1 with ignition switch turned OFF.
2) Remove ECM from its br acket with ECM connectors
connected.
3) Turn ON ignition switch, ma ke sure that A/C switch is
OFF position.
4) Measure voltage between vehicle body ground and “E23-46” terminal of ECM connector when engine
coolant temp. is below 95 °C, 203 °F.
Is voltage 10 – 14 V? Go to Step 8.
Go to Step 5.
5 Wire circuit check
1) Disconnect connectors from ECM with ignition switch
turned OFF.
2) Disconnect radiator cooling fan relay No. 1 from individual circuit fuse box No.1.
3) Measure resistance between “E23-46” terminal of ECM connector and vehicle ground.
Is resistance infinity? Go to Step 6.
“LT GRN” wire is
shorted to ground
circuit.
6 Wire circuit check
1) Turn ON ignition switch.
2) Measure voltage between “E23-46” terminal of ECM
connector and vehicle body ground.
Is voltage 0 V? Go to Step 7.
“LT GRN” wire is
shorted to other circuit.
7 Radiator cooling fan relay No. 1 check
1) Check radiator cooling fan relay No. 1 referring to
“Radiator Cooling Fan Relay Inspection in Section 1F”.
Is check result satisfactory? “LT GRN” wire is open
circuit.
Replace relay.
Step
Action YesNo
1
2
I7RS0A110010-01

Downloaded from www.Manualslib.com manuals search engine Engine General Information and Diagnosis: 1A-183
E23-45BLU/
ORNThrottle actuator
control relay output
0 – 1 V Ignition switch turned ON. —
E23-46 LT GRN Radiator cooling
fan relay No.1
output 10 – 14 V
Ignition switch turned ON,
engine coolant temp.:
below 95
°C (203 ° F), or
A/C refrigerant pressure (if
equipped with A/C): below
600 kPa (87 psi) with A/C
switch turned ON while
engine is running. —
0 – 2 V Ignition switch turned ON,
engine coolant temp.: 97.5
°
C (207.5 ° F) or higher, or
A/C refrigerant pressure (if
equipped with A/C): 1100
kPa (159.5 psi) or higher
with A/C switch turned ON
while engine is running.
E23-47 GRY A/C compressor
relay output 10 – 14 V
Engine running, A/C
switch OFF and blower
selector at OFF position.
—
0 – 1 V Engine running, A/C
switch ON and blower
selector at 1st position or
more.
E23-48 GRN Radiator cooling
fan relay No.2 and
No.3 output 10 – 14 V
Ignition switch turned ON,
engine coolant temp.:
below 100
°C (212 °F), or
A/C refrigerant pressure (if
equipped with A/C): below
1200 kPa (174 psi) with A/
C switch turned ON while
engine is running. —
0 – 2 V Ignition switch turned ON,
engine coolant temp.:
102.5
°C (216.5 °F) or
higher, or A/C refrigerant
pressure (if equipped with
A/C): 1500 kPa (217.5 psi)
or higher with A/C switch
turned ON while engine is
running.
E23-49 — — — — —
E23-50 — Ground for shield
wire of APP sensor Below 0.3 V Ignition switch turned ON. —
E23-51 WHT Ground for APP
sensor (sub) Below 0.3 V Ignition switch turned ON. —
E23-52 BLU Ground for APP
sensor (main) Below 0.3 V Ignition switch turned ON. —
E23-53 — — — — —
E23-54 ORN Ground for sensors Below 0.3 V Ignition switch turned ON. —
Terminal
No. Wire
color Circuit Normal voltage Condition Remarks

Downloaded from www.Manualslib.com manuals search engine Engine General Information and Diagnosis: 1A-193
Reference waveform No.32
VSS signal at 30 km/h (19 mph)
Resistance Check1) Remove ECM from its bracket referring to “ECM Removal and Installation in Section 1C”.
CAUTION!
Never touch terminals of ECM itself or connect voltmeter or ohmmeter (2).

2) Connect special tool to ECM connectors securely.
NOTE
Do not connect the other connector of special tool to ECM.

3) Check resistance between each pair of terminals of disconnected connectors (1) as listed in the following table.
CAUTION!
• Be sure to connect ohmmeter probe from wire harness side of coupler.
• Be sure to turn OFF ignition switch for this check.
• Resistance in the following table represents that measured when parts temperature is 20 °C (68 °F).

Measurement
terminal CH1: “E23-25” to “C37-58”
Oscilloscope
setting CH1: 5 V/DIV, CH2: 5 V/DIV
TIME: 40 ms/DIV
Measurement
condition • After warmed up to normal
operating temperature
• Vehicle driving at 30 km/h (19 mph)
1. VSS signal for EPS control module
2. ON
3. OFF
I6RS0C110047-01
1
2
I4RS0A110086-02
Terminals CircuitStandard resistance Condition
C37-47 to E23-29 Heater of HO2S-2 4 – 15 Ω—
E23-46 to E23-1/16 Radiator cooling fan relay No.1 160 – 240 Ω —
E23-60 to E23-29 Main relay 160 – 240 ΩBattery disconnected
and ignition switch
turned ON
E23-15 to E23-29 Fuel pump relay 160 – 240 Ω —
C37-16 to E23-1/16 No.3 fuel injector 10.8 – 18.2 Ω —
C37-17 to E23-1/16 No.4 fuel injector
C37-4 to E23-1/16 EGR valve (st epping motor No.1 coil) 20 – 31 Ω —
C37-29 to E23-1/16 EVAP canister purge valve 28 – 35 Ω —
C37-2 to E23-1/16 No.2 fuel injector 10.8 – 18.2 Ω—

Downloaded from www.Manualslib.com manuals search engine Engine General Information and Diagnosis: 1A-205
A/C System Circuits CheckS7RS0B1104084
Wiring Diagram
E23C37
34
1819
567
1011
17
20
47 46
495051
2122
52 16
25 9
24
14
29
55
57 54 53
59
60 58 2
262728
15
30
56 4832 31
34353637
40
42 39 38
44
45 43 41 331
1213
238
34
1819
567
1011
17
20
47 46
495051
2122
52 16
25 9
24
14
29
55
57 54 53
59
60 58 2
262728
15
30
56 4832 31
34353637
40
42 39 38
44
45 43 41 331
1213
238
BLK/REDBLK/RED
BLK/YELBLK/YEL
BLK/YEL
BRN/WHT
12V
5V
12
E23-1
E23-60
BLK/RED
LT GRN
BLK/REDE23-16
E23-46
L+
L–
H–
H
+
BLU/RED
BLK
BLUWHTBLK
BLU/BLK
BLU/RED
GRN
GRY
E23-48
8
11
2
3BLU/WHT
REDWHTREDWHTE23-3E23-18
E23-19
6
BLK
WHT
BLK 12V
E23-47 GRY
WHT
YELBLU
WHT
BLK/YEL
RED/BLK
GRN/WHT
WHT/BLU1
713
14
5V
5V
4
E23-55C37-14GRY/REDRED
E23-54ORN 5V
E23-57WHT/BLK16
9
10
25
17
5
24
15
22
BLU/YEL
23212019
GRN
BLK
18
26
28
27
I6RS0C110042-01
1. Blower fan motor 11. Radiator cooling fan motor 21. “A/C COMP” fuse
2. Blower fan switch 12. Main relay 22. “IG ACC” fuse
3. A/C switch 13. ECM 23. “RDTR FAN” fuse
4. A/C refrigerant pressure sensor 14. Ignition switch 24. Junction block assembly
5. Blower motor relay 15. BCM 25. “IG2 SIG” fuse
6. Compressor relay 16. Evaporator outlet air temp. sensor 26. HVAC control module
7. A/C compressor 17. “BACK” fuse 27. For manual A/C
8. Radiator cooling fan relay No.1 18. Individual circuit fuse box No.1 28. For automatic A/C
9. Radiator cooling fan relay No.2 19. “HTR FAN” fuse
10. Radiator cooling fan relay No.3 20. “FI” fuse