2006 SUZUKI SWIFT temperature sensor

Downloaded from www.Manualslib.com manuals search engine Engine General Information and Diagnosis: 1A-141
DTC P1501 / P1502: Electric Load Current Sensor Circuit Low / HighS7RS0B1104059
System and Wiring Diagram
Electric Load Current Sensor Description
Refer to “Generator Control System Description”.
DTC Detecting Condition and Trouble Area
DTC Confirmation Procedure1) With ignition switch turned OFF, connect scan tool to DLC.
2) Turn ON ignition switch and clear DTC.
3) Make sure that all accessory switch is tuned OFF.
4) Start engine and warm it up to normal operating temperature (ECT approx. 90 – 95 °C, 193 – 203 °F).
5) Increase engine speed to 3000 rpm.
6) In this state, Turn ON following accessory switch.
• Head lights switch.
• Blower motor switch (max position).
• Rear defogger switch.
7) Decrease engine speed to idle.
8) Check DTC.
E23 C37
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/WHT
WHT
GRN
4
3 2
E23-29
1
C37-23PNK/BLU
BLK/ORN
BLK/WHT
I5RS0C110014-01
1. Electric load current sensor
3. “IG COIL” fuse
2. ECM 4. Ignition switch
DTC detecting condition Trouble area
P1501:
Electric load current is lower th an specified value (electric load
current sensor voltage is higher than specified value).
(1 driving cycle detection logic but MIL does not light up)
P1502:
Electric load current is higher than specified value (electric load
current sensor voltage is lo wer than specified value).
(1 driving cycle detection logic but MIL does not light up) • Electric load current sensor and/or its circuit
•ECM

Downloaded from www.Manualslib.com manuals search engine 1A-174 Engine General Information and Diagnosis:
DTC Confirmation Procedure
DTC P2227:
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 by 2 persons, a driver and a tester, on a level road.

1) Connect scan tool to DLC with ignition switch turned OFF.
2) Turn ON ignition switch and clear DTC, pending DTC and freeze frame data by using scan tool and warm up
engine to normal operating temperature.
3) Check DTC and pending DTC by using scan tool.
DTC P2228 / P2229: 1) Connect scan tool to DLC with ignition switch turned OFF.
2) Turn ON ignition switch, clear DTC by using scan tool and run engine for 1 min.
3) Check DTC.
DTC Troubleshooting
NOTE
• When measuring circuit voltage, resistance and/ or pulse signal at ECM connector, connect the
special tool to ECM and/or the ECM connectors re ferring to “Inspection of ECM and Its Circuits”.
• Upon completion of inspection and repair work, perform “DTC Confirmation Procedure” and confirm that the trouble has been corrected.

Step Action YesNo
1 Was “Engine and Emission Control System Check”
performed? Go to Step 2.
Go to “Engine and
Emission Control
System Check”.
2 Is DTC P2227 set? Go to Step 3.Substitute a known-
good ECM and recheck.
3 MAP sensor check
1) Check MAP sensor and its circuit referring to “DTC
P0107: Manifold Absolute Pressure / Barometric
Pressure Circuit Low Input” and/or “DTC P0108:
Manifold Absolute Pressure / Barometric Pressure
Circuit High Input”.
Is check result satisfactory? Substitute a known-
good ECM and recheck.
MAP sensor or its circuit
malfunction.

Downloaded from www.Manualslib.com manuals search engine 1A-184 Engine General Information and Diagnosis:
Reference waveform No.1
Fuel injector signal (1) with engine idling
E23-55 RED
A/C refrigerant
pressure sensor
signal 1.38 – 1.52 V
Engine running, A/C
switch OFF and blower
selector at OFF position,
A/C refrigerant pressure:
800 kPa (116 psi)
—
2.15 – 2.38 V Engine running, A/C
switch ON and blower
selector at 1st position or
more, A/C refrigerant
pressure: 1400 kPa (203
psi)
2.67 – 2.95 V Engine running, A/C
switch ON and blower
selector at 1st position or
more, A/C refrigerant
pressure: 1800 kPa (261
psi)
E23-56 — — — — —
E23-57 WHT/
BLK A/C evaporator
outlet air temp.
sensor signal
(manual A/C
model) 3.4 – 3.7 V
Ignition switch turned ON
at A/C evaporator outlet
temperature 0
°C (32 °F).
—
2.5 – 2.8 V Ignition switch turned ON
at A/C evaporator outlet
temperature 15
°C (59 °F).
1.7 – 2.0 V Ignition switch turned ON
at A/C evaporator outlet
temperature 30
°C (86 °F).
E23-58 — — — — —
E23-59 — — — — —
E23-60 BRN/
WHT Main power supply
relay output 10 – 14 V Ignition switch turned OFF.
—
0 – 2 V Ignition switch turned ON.
Terminal
No. Wire
color Circuit Normal voltage Condition Remarks
Measurement
terminal CH1: “C37-2” to “C37-58”
Oscilloscope
setting CH1: 20 V/DIV
TIME: 1 ms/DIV
Measurement
condition • After warmed up to normal
operating temperature
• Engine at specified idle speed
2. Fuel injection pulse width: 2 – 4 msec.
3. 10 – 14 V
I4RS0B110050-01

Downloaded from www.Manualslib.com manuals search engine 1A-188 Engine General Information and Diagnosis:
Reference waveform No.14
No.3 fuel injector signal (2) with engine idling
Reference waveform No.15
No.4 fuel injector sig nal (2) with engine idling Reference waveform No.16
CMP sensor signal with engine idling
Reference waveform No.17
CMP sensor signal with engine idling
Measurement
terminal
CH1: “C37-20” to “C37-58”
CH2: “C37-16” to “C37-58”
Oscilloscope
setting CH1: 5 V/DIV, CH2: 20 V/DIV
TIME: 40 ms/DIV
Measurement
condition • After warmed up to normal
operating temperature
• Engine at specified idle speed
1. Cylinder reference signal (CMP reference signal)
3. 720 ° crank angle
Measurement
terminal CH1: “C37-20” to “C37-58”
CH2: “C37-17” to “C37-58”
Oscilloscope
setting CH1: 5 V/DIV, CH2: 20 V/DIV
TIME: 40 ms/DIV
Measurement
condition • After warmed up to normal
operating temperature
• Engine at specified idle speed
1. Cylinder reference signal (CMP reference signal)
3. 720 ° crank angle
I6RS0C110032-01
I6RS0C110033-01
Measurement
terminal CH1: “C37-20” to “C37-58”
CH2: “C37-21” to “C37-58”
Oscilloscope
setting CH1: 2 V/DIV, CH2: 2 V/DIV
TIME: 20 ms/DIV
Measurement
condition • After warmed up to normal
operating temperature
• Engine at specified idle speed
1. Cylinder reference signal (CMP reference signal)
2. CKP signal
3. 360 ° crank angle
4. 4 – 5 V
5. 36 – 6 = 30 CKP pulse
Measurement
terminal CH1: “C37-20” to “C37-58”
CH2: “C37-21” to “C37-58”
Oscilloscope
setting CH1: 2 V/DIV, CH2: 2 V/DIV
TIME: 10 ms/DIV
Measurement
condition • After warmed up to normal
operating temperature
• Engine at specified idle speed
1. Cylinder reference signal (CMP reference signal)
2. CKP signal
3. 30 ° crank angle
4. 10 ° crank angle
5. 360 ° crank angle
6. 36 – 6 = 30 CKP pulse
I6RS0C110034-01
I6RS0C110035-01

Downloaded from www.Manualslib.com manuals search engine Engine General Information and Diagnosis: 1A-189
Reference waveform No.18
MAF sensor signal (1) with engine racing
Reference waveform No.19
Generator control signal (1) at engine idlingReference waveform No.20
EVAP canister purge valve signal
Measurement
terminal CH1: “C37-26” to “C37-27”
CH2: “C37-54” to “C37-55”
Oscilloscope
setting CH1: 1 V/DIV, CH2: 1 V/DIV
TIME: 200 ms/DIV
Measurement
condition • After warmed up to normal
operating temperature
• Engine racing
2. TP sensor signal
3. Racing
4. Idle
Measurement
terminal CH1: “C37-28” to “C37-58”
Oscilloscope
setting CH1: 5 V/DIV
TIME: 10 ms/DIV
Measurement
condition • After warmed up to normal
operating temperature
• Engine at specified idle speed
• For a few sec. from headlight switch turned ON
I4RS0B110066-01
I7RS0B110015-01
Measurement
terminal CH1: “C37-29” to “C37-58”
Oscilloscope
setting CH1: 10 V/DIV
TIME: 40 ms/DIV
Measurement
condition • After warmed up to normal
operating temperature
• EVAP canister purge valve setting at 52% by using “Misc Test” of
scan tool
1. ON signal
2. OFF signal
3. One duty cycle
4. 10 – 14 V
I4RS0B110067-01

Downloaded from www.Manualslib.com manuals search engine 1A-190 Engine General Information and Diagnosis:
Reference waveform No.21
Throttle actuator output signal with ignition switch turned
ONReference waveform No.22
Ignition coil signal and fuel injector signal with engine
cranking
Reference waveform No.23
MAP sensor signal (1) with ignition switch turned ON
Measurement
terminal
CH1: “C37-45” to “C37-58”
CH2: “C37-44” to “C37-58”
Oscilloscope
setting CH1: 5 V/DIV, CH2: 5 V/DIV
TIME: 2 ms/DIV
Measurement
condition • After warmed up to normal
operating temperature
• Ignition switch turned ON and accelerator pedal at full
depressed position
1. Throttle actuator drive signal (“C37-45” terminal)
2. Throttle actuator drive signal (“C37-44” terminal)
3. ON signal
4. OFF signal
5. One duty cycle
I4RS0B110082-02
Measurement
terminal CH1: “C37-20” to “C37-58”
CH2: “C37-6” to “C37-58”
CH3: “C37-1” to “C37-58”
CH4: “C37-48” to “C37-58”
Oscilloscope
setting CH1: 5 V/DIV, CH2: 5 V/DIV
CH3: 50 V/DIV, CH4: 10 V/DIV
TIME: 200 ms/DIV
Measurement
condition • After warmed up to normal
operating temperature
• Engine at cranking
1. Cylinder reference signal (CMP reference signal)
2. Ignition coil No.1 and No.4 signal
3. No.1 fuel injector signal
4. Engine start signal
Measurement
terminal CH1: “C37-53” to “C37-55”
CH2: “C37-54” to “C37-55”
Oscilloscope
setting CH1: 2 V/DIV, CH2: 1 V/DIV
TIME: 200 ms/DIV
Measurement
condition • After warmed up to normal
operating temperature
• Ignition switch turned ON
2. TP sensor signal
I6RS0C110038-01
I4RS0B110070-01

Downloaded from www.Manualslib.com manuals search engine Engine General Information and Diagnosis: 1A-191
Reference waveform No.24
MAP sensor signal (1) with engine racing
Reference waveform No.25
Knock sensor signal at engine speed 4000 r/min.Reference waveform No.26
Knock sensor signal at engine speed 4000 r/min.
Reference waveform No.27
Oil control valve signal with engine idling
Measurement
terminal
CH1: “C37-53” to “C37-55”
CH2: “C37-54” to “C37-55”
Oscilloscope
setting CH1: 2 V/DIV, CH2: 2 V/DIV
TIME: 200 ms/DIV
Measurement
condition • After warmed up to normal
operating temperature
• Engine racing
2. TP sensor signal
3. Racing
4. Idle
Measurement
terminal CH1: “C37-56” to “C37-58”
Oscilloscope
setting CH1: 1 V/DIV
TIME: 10 ms/DIV
Measurement
condition • After warmed up to normal
operating temperature
• Engine running at 4000 r/min.
I4RS0B110071-01
I4RS0B110072-01
Measurement
terminal CH1: “C37-56” to “C37-58”
Oscilloscope
setting CH1: 1 V/DIV
TIME: 200
µs/DIV
Measurement
condition • After warmed up to normal
operating temperature
• Engine running at 4000 r/min.
Measurement
terminal CH1: “C37-60” to “C37-59”
Oscilloscope
setting CH1: 5 V/DIV
TIME: 2 ms/DIV
Measurement
condition At the moment of the ignition switch
turned on
1. ON signal
2. OFF signal
3. Only duty cycle
I4RS0B110073-01
I4RS0B110074-01

Downloaded from www.Manualslib.com manuals search engine Engine General Information and Diagnosis: 1A-207
6A/C evaporator outlet air temp. sensor check
1) Disconnect connectors from ECM with ignition switch
turned OFF.
2) Check for proper connection to “E23-57” and “E23-54” wire terminals of ECM connector.
3) If OK, measure resistance between “E23-57” and “E23- 54” wire terminals of ECM connector.
Evaporator temp. sensor resistance
At 0 °C: 6.3 – 6.9 k Ω
At 25 °C: 1.8 – 2.2 k Ω
Is resistance within specification? Go to Step 7. Faulty A/C evaporator
outlet air temp. sensor
or its circuit.
7 DTC check of A/C refrigerant pressure sensor circuit
1) Connect scan tool to DLC with ignition switch turned
OFF.
2) Turn ON ignition switch.
3) Check ECM for DTC of A/C refrigerant pressure sensor circuit.
Is there DTC P0532 or DTC P0533? Go to applicable DTC
diag. flow.
Go to Step 8.
8 A/C refrigerant pressure sensor voltage check
1) Check A/C refrigerant pressure sensor voltage referring
to “Inspection of ECM and Its Circuits”.
Is voltage within specified value? Go to Step 9. Check amount of
refrigerant. If OK,
replace A/C refrigerant
pressure sensor.
9 Radiator cooling fan check
1) Check radiator cooling fan referring to “Radiator Cooling
Fan Motor On-Vehicle Inspection in Section 1F”.
Is check result satisfactory? Radiator cooling fan
drive circuit malfunction.
If circuit is OK, go to
St ep 6 .
Replace radiator cooling
fan motor.
10 A/C compressor control system check
Is A/C compressor started when A/C and blower speed
selector switch are turned ON with engine running? A/C system is in good
condition.
Go to Step 11.
Step Action Yes No
7
6
5
4
3
2
1
10
20 30
40 50
0
10
2030
60 70 80
ResistanceTemperatureI3RB0A110053-01