Crank Sensor SUZUKI SWIFT 2008 2.G Service User Guide

Downloaded from www.Manualslib.com manuals search engine 1A-106 Engine General Information and Diagnosis:
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 Does fuel level meter in dicate “E” level (empty)? Add fuel and recheck. Go to Step 3.
3 Fuel quality check
1) Check that there is fuel of good quality in the fuel tank.
Is it OK? Go to Step 4.
Clean in fuel system
circuit and change fuel.
4 Ignition system check
1) Check spark plug and ignition spark of cylinder where
misfire occurs, referring to “Spark Plug Inspection in
Section 1H” and “Ignition Spark Test in Section 1H”.
Are they in good condition? Go to Step 5.
Faulty ignition coil, wire
harness, spark plug or
other system parts.
5 Fuel injector circuit check
1) Using sound scope, check each injector operating sound
at engine cranking or idling.
Do all injectors ma ke operating sound? Go to Step 6.
Check coupler
connection and wire
harness of injector not
making operating sound
and injector itself. If OK,
substitute a known-
good ECM and recheck.
6 Fuel pressure check
1) Check fuel pressure referring to “Fuel Pressure Check”.
Is check result satisfactory? Go to Step 7.
Repair or replace fuel
system.
7 Fuel injector check
1) Check fuel injector(s) re ferring to “Fuel Injector
Inspection in Section 1G”.
Is check result satisfactory? Go to Step 8.
Replace defective
injector.
8 Ignition timing check
1) Check ignition timing referring to “Ignition Timing
Inspection in Section 1H”.
Is check result satisfactory? Go to Step 9.
Check related sensors.
9 EGR system check
1) Check EGR system referring to “EGR System Inspection
in Section 1B”.
Is check result satisfactory? Go to Step 10. Repair or replace EGR
system.
10 Exhaust system check
1) Check exhaust system for exhaust gas clogged.
Is it OK? Go to Step 11. Repair clogged of
exhaust system.

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DTC P0335: Crankshaft Position (CKP) Sensor “A” CircuitS7RS0B1104041
Wiring Diagram
DTC Detecting Condition and Trouble Area
DTC Confirmation Procedure1) With ignition switch turned OFF, connect scan tool.
2) Turn ON ignition switch and clear DTC using scan tool.
3) Crank engine for 3 – 5 sec.
4) Check DTC. 7
Knock sensor circuit for high resistance check
1) Turn OFF ignition switch, measure resistance between
“C37-56” terminal of ECM connector and “RED” wire
terminal of knock sensor harness connector.
Is resistance below 5
Ω? Faulty knock sensor. “RED” wire is high
resistance circuit.
Step
Action YesNo
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
12V
5V
BLK/RED
BLK/RED
BLK/YELBLK/YEL
BLK/YEL
BRN/WHT
5
9 4
13
3
C37-30C37-15
C37-58
E23-31
BLK/ORN
BLKBLKBLK
10
BLK/RED
BLK/RED
E23-16
E23-60
E23-1
BLK/ORN
1
15
C37-21 5V
7RED/WHTGRN/WHT
GRN
RED
BLK/WHT
YEL/GRN
YEL/GRN
WHT
[A]: YEL
[B]: YEL/GRN
68
12
11
14
PNK
2
WHT
WHT/BLU
C37-48
E23-30
E23-29
I6RS0C110016-01
[A]: For A/T model 5. Ignition switch 11. “ST MOT” fuse
[B]: For M/T model 6. Starting motor 12. “ST SIG” fuse
1. CKP sensor 7. Starting motor control relay 13. “IG COIL” fuse
2. Sensor plate on crankshaft 8. Transmission range switch (for A/T model) 14. “IG ACC” fuse
3. ECM 9. Main fuse box 15. To CMP sensor
4. Main relay 10. “FI” fuse
DTC detecting condition Trouble area
No CKP sensor signal for 2 se c. even if starting motor
signal is inputted at engine cranking.
(1 driving cycle detection logic) • CKP sensor circuit open or short
• Sensor plate teeth damaged
• CKP sensor malfunction, foreign material being attached
or improper installation
•ECM
• Engine start signal circuit malfunction

Downloaded from www.Manualslib.com manuals search engine 1A-112 Engine General Information and Diagnosis:
System Description
The CMP sensor located on the transmission side of cylinder head consists of the signal generator (magnetic sensor)
and signal rotor (intake camshaft portion).
The signal generator generates reference signal through slits in the slit plate which turns together with the camshaft.
Reference signal
The CMP sensor generates 6 pulses of si gnals each of which has a different waveform length while the camshaft
makes one full rotation. Refer to “Inspection of ECM and Its Circuits”.
Based on these signals, ECM judges which cylinder pist on is in the compression stroke and the engine speed.
DTC Detecting Condition and Trouble Area
DTC Confirmation Procedure 1) With ignition switch turned OFF, connect scan tool.
2) Turn ON ignition switch and clear DTC using scan tool.
3) Crank engine for 5 sec.
4) 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.

DTC detecting condition Trouble area
• CMP sensor pulse is less than 20 pulses per crankshaft 8 revolutions
• CMP sensor pulse is more than 28 pulses per crankshaft 8 revolutions
• CMP sensor pulse is less than 20 pulses between BTDC 155 ° crank angle and BTDC 5 ° crank angle
with crankshaft 8 revolutions from engine start.
(1 driving cycle detection logic) • CMP sensor circuit open or short
• Signal rotor teeth damaged
• CMP sensor malfunction, foreign material being attached
or improper installation
•ECM
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 CMP sensor and connector for proper installation check
Is CMP sensor installed properly and connector connected
securely? Go to Step 3.
Correct.

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DTC P2227 / P2228 / P2229: Barometric Pressure Circuit MalfunctionS7RS0B1104078
DTC P2227: Barometric Pressure Circuit Range / Performance
DTC P2228: Barometric Pressure Circuit Low
DTC P2229: Barometric Pressure Circuit High
System Description
Barometric pressure sensor is installed in ECM.
DTC Detecting Condition and Trouble Area6
Wire harness check
1) Disconnect connectors from ECM with ignition switch
turned OFF.
2) Check for proper connection of ECM connector at “E23- 37”, “E23-52”, “E23-36” and “E23-51” terminals.
3) If OK, measure resistance between “GRN” wire terminal of APP sensor connector and vehicle body ground,
between “YEL” wire terminal of APP sensor connector
and vehicle body ground.
Is each resistance infinity? Go to Step 7. “GRN” wire or “YEL”
wire is shorted to other
circuit.
7 Wire harness check
1) Turn ON ignition switch.
2) Measure voltage between “E23-37” terminal of ECM
connector and engine ground, between “E23-36”
terminal of ECM connector and engine ground.
Is each voltage 0 V? Go to Step 8. “GRN” wire or “YEL”
wire is shorted to other
circuit.
8 APP sensor check
1) Check APP sensor referring to “APP Sensor Assembly
Inspection in Section 1C”.
Is output voltage within specified value? Substitute a known-
good ECM and recheck.
Replace APP sensor
assembly.
Step Action Yes No
DTC detecting condition
Trouble area
DTC P2227:
Difference of barometric pressure value and intake manifold
pressure value is higher than specified value while engine
cranking.
(*2 driving cycle detection logic, monitoring once par driving cycle) • Manifold absolute pressure sensor
performance problem
• Barometric pressure sensor in ECM
DTC P2228:
Barometric pressure signal less than specified value is detected.
(1 driving cycle detection logic) • Barometric pressure sensor in ECM
DTC P2229:
Barometric pressure signal more than specified value is detected.
(1 driving cycle detection logic)

Downloaded from www.Manualslib.com manuals search engine Engine General Information and Diagnosis: 1A-177
C37-10 WHTOxygen signal of
HO2S-1 0 – 1 V Ignition switch turned ON.
—
*Deflects between
over 0.5 V and under 0.45 V
(“Reference
waveform No.10: ” and “Reference
waveform No.11: ”) While engine running at
2,000 r/min. for 1 min. or
longer after warmed up.
C37-11 BRN Oxygen signal of
HO2S-2 4 – 5 V Ignition switch turned ON.
—
*Deflects between
over 0.5 V and under 0.45 V
(“Reference
waveform No.12: ”) While engine running at
2,000 r/min. or more after
vehicle running over 30
km/h, 19 mph for 5 min.
C37-12 WHT CAN (low)
(communication
line (active low
signal) to TCM (A/T
model) *0.5 – 2.5 V
(“Reference
waveform No.13: ”) Ignition switch turned ON
with engine stop. CAN communication line
signal is pulse. Pulse
signal displayed with a
regular frequency which
varies depending on
engine condition.
C37-13 RED CAN (high)
communication line
(active high signal)
to TCM (A/T
model) *2.5 – 4.5 V
(“Reference
waveform No.13: ”)
C37-14 GRY/
RED Output of 5 V
power source for
MAP sensor, A/C
refrigerant
pressure sensor
4.5 – 5.5 V Ignition switch turned ON. —
C37-15 BLK Ground for ECM Below 0.3 V Ignition switch turned ON. —
C37-16 BLU/
RED Fuel injector No.3
output 10 – 14 V Ignition switch turned ON. —
*0 – 0.6 V ↑↓
10 – 14 V
(“Reference
waveform No.1: ” and
“Reference waveform No.14: ”) Engine running at idle
after warmed up engine.
Output signal is active low
pulse. Pulse frequency
varies depending on
engine speed.
C37-17 BLU/
ORNFuel injector No.4
output 10 – 14 V Ignition switch turned ON. —
*0 – 0.6 V ↑↓
10 – 14 V
(“Reference
waveform No.1: ” and
“Reference waveform No.15: ”) Engine running at idle
after warmed up engine.
Output signal is active low
pulse. Pulse frequency
varies depending on
engine speed.
C37-18 BRN/
YEL EGR valve
(stepper motor coil
4) output 10 – 14 V Ignition switch turned ON. —
*0 – 1 V ↑↓
10 – 14 V
(“Reference
waveform No.4: ”) Ignition switch is turned to
ST (cranking) position. Output signal is active low
duty pulse. Number of
pulse generated times
varies depending on
vehicle condition.
C37-19 WHT/
RED EGR valve
(stepper motor coil
3) output 10 – 14 V Ignition switch turned ON. —
*0 – 1 V ↑↓
1

0 – 14 V
(“Reference
waveform No.4: ”) Ignition switch is turned to
ST (cranking) position. Output signal is active low
duty pulse. Number of
pulse generated times
varies depending on
vehicle condition.
Terminal
No. Wire
color Circuit Normal voltage
ConditionRemarks

Downloaded from www.Manualslib.com manuals search engine 1A-178 Engine General Information and Diagnosis:
C37-20RED/
YEL CMP sensor signal 0 – 1 V or 4 – 5 V Ignition switch turned ON. —
*0 – 0.6 V↑↓
4 – 5 V
(“Reference
waveform No.16: ” and “Reference
waveform No.17: ”) Engine running at idle
after warmed up engine.
Sensor signal is pulse.
Pulse frequency varies
depending on engine
speed.
(6 pulses are generated
per 1 camshaft revolution.)
C37-21 PNK CKP sensor signal 0 – 1 V or 4 – 5 V Ignition switch turned ON. —
*4 – 5 V↑↓
0 – 0.6 V
(“Reference
waveform No.16: ” and “Reference
waveform No.17: ”) Engine running at idle
after warmed up engine. Sensor signal is pulse.
Pulse frequency varies
depending on engine
speed.
(30 (36 – 6) pulses are
generated per 1
crankshaft revolution.)
C37-22 — — — — —
C37-23 PNK/
BLU Electric load
current sensor
signal 3.8 – 4.2 V Ignition switch turned ON.
—
3.0 – 3.4 V
Ignition switch turned ON
and headlight switch
turned ON (HI beam).
2.3 – 2.7 V Ignition switch turned ON,
headlight switch turned
ON (HI beam) and blower
selector at HI position.
C37-24 LT GRN ECT sensor signal 3.3 – 3.8 V
Ignition switch turned ON,
ECT at 0
°C, 32 °F.
—
1.38 – 1.72 V Ignition switch turned ON,
ECT at 50
°C, 122 °F.
0.40 – 0.53 V Ignition switch turned ON,
ECT at 100
°C, 212 °F.
C37-25 BLK/
YEL IAT sensor signal 3.18 – 3.67 V
Ignition switch turned ON,
IAT at 0
°C, 32 °F.
—
1.32 – 1.65 V Ignition switch turned ON,
IAT at 40
°C, 104 °F.
0.46 – 0.60 V Ignition switch turned ON,
IAT at 80
°C, 176 °F.
C37-26 GRN/
BLK MAF sensor signal 0.5 – 1.5 V
Ignition switch turned ON
with engine at stop.
—
1.5 – 2.0 V
(“Reference
waveform No.18: ”) Wh

en engine running at
specified idle speed after
warmed up.
C37-27 GRY Ground for MAF
sensor Below 0.3 V Ignition switch turned ON.
—
C37-28 BLU/
YEL Generator control
signal output *0 – 0.6 V
↑↓
5 – 8 V
(“Reference
waveform No.19: ”) Engine running at idle
speed, headlight switch
turned ON.
Output signal is active low
duty pulse. Duty ratio
varies depending on
vehicle condition.
C37-29 BLU/
BLK EVAP canister
purge valve output 10 – 14 V
Ignition switch turned ON
with engine at stop. —
*0 – 0.6 V ↑↓
10 – 14 V
(“Reference
waveform No.20: ”) Set EVAP canister purge
valve at 52% by using
“Misc Test” of scan tool.
Output signal is active low
duty pulse. Duty ratio
varies depending on
vehicle condition.
C37-30 BLK Ground for ECM Below 0.3 V Ignition switch turned ON. —
C37-31 — —— — —
Terminal
No. Wire
color Circuit Normal voltage
ConditionRemarks

Downloaded from www.Manualslib.com manuals search engine Engine General Information and Diagnosis: 1A-179
C37-32 ——— — —
C37-33 — —— — —
C37-34 — —— — —
C37-35 — —— — —
C37-36 — —— — —
C37-37 — —— — —
C37-38 — —— — —
C37-39 — —— — —
C37-40 WHT TP sensor (sub)
signal 1.57 – 1.09 V
Ignition switch turned ON
and accelerator pedal at
idle position after warmed
up engine.
—
3.88 – 4.45 V Ignition switch turned ON
and accelerator pedal at
full depressed position
after warmed up engine.
C37-41 — Ground for shield
wire of TP sensor
circuit Below 0.3 V Ignition switch turned ON.
—
C37-42 BLK Ground for TP
sensor Below 0.3 V Ignition switch turned ON.
—
C37-43 RED Output for 5 V
power source of TP
sensor 4.5 – 5.5 V Ignition switch turned ON.
—
C37-44 LT
GRN/ BLK Output of throttle
actuator 0 – 1 V
Ignition switch turned ON
and accelerator pedal at
idle position after warmed
up engine.
Output signal is pulse.
Duty ratio varies
depending on throttle
valve and accelerator pedal position.
*0 – 1 V
↑↓
10 – 14 V
(“Reference
waveform No.21: ”) Ignition switch turned ON
and accelerator pedal at
full depressed position
after warmed up engine.
C37-45 LT
GRN/ RED Output of throttle
actuator 0 – 1 V
Ignition switch turned ON
and accelerator pedal at
full depressed position
after warmed up engine.
Output signal is pulse.
Duty ratio varies
depending on throttle
valve and accelerator pedal position.
*0 – 1 V
↑↓
10 – 14 V
(“Reference
waveform No.21: ”) Ignition switch turned ON
and accelerator pedal at
idle position after warmed
up engine.
C37-46 BLK/
RED Heater output of
HO2S-1 10 – 14 V Ignition switch turned ON.
—
*0 – 2 V ↑↓
10 – 14 V
(“Reference
waveform No.10: ” and “Reference
waveform No.11: ”) Engine running at idle
after warmed up engine.
Output signal is active low
duty pulse. Duty ratio
varies depending on
engine condition.
C37-47 RED/
BLU Heater output of
HO2S-2 10 – 14 V Ignition switch turned ON.
—
0 – 1 V
(“Reference
waveform No.12: ”) Engine running at idle
after vehicle running over
30 km/h, 19 mph for 5 min.
C37-48 YEL/
GRN Starting motor
signal 0 – 1 V Ignition switch turned ON.
—
6 – 14 V While engine cranking.
C37-

49 — —— — —
Terminal
No. Wire
color Circuit Normal voltage
ConditionRemarks

Downloaded from www.Manualslib.com manuals search engine 1A-182 Engine General Information and Diagnosis:
E23-25 PPLVehicle speed
signal output for P/
S control module *0 – 1 V
↑↓
10 – 14 V
(“Reference
waveform No.32: ”) Vehicle running. Sensor signal is pulse.
Pulse frequency varies
depending on vehicle
speed.
(21 pulses are generated
per sec. at 30 km/h, 19
mph.) (2561 pulses/km)
E23-26 RED/
BLU EPS signal 10 – 14 V Ignition switch turned ON.
—
0 – 1 V With engine running at idle
speed, and steering wheel
turned to the right or left as
far as it stops.
E23-27 — — — — —
E23-28 YEL/
BLK Serial
communication line
for immobilizer coil
antenna
10 – 14 V Ignition switch turned ON. —
E23-29 BLK/
WHT Ignition switch
signal 0 – 1 V Ignition switch turned OFF.
—
10 – 14 V Ignition switch turned ON.
E23-30 WHT Starting motor
control relay output 0 – 1 V Ignition switch turned ON.
—
0 – 1 V Ignition switch is turned to
ST (engine cranking)
position.
E23-31 BLK Ground for ECM Below 0.3 V Ignition switch turned ON. —
E23-32 RED/
YEL Power supply of
throttle actuator
drive circuit
10 – 14 V Ignition switch turned ON. —
E23-33 — — — — —
E23-34 RED Output for 5 V
power source of
APP sensor (sub) 4.5 – 5.5 V Ignition switch turned ON. —
E23-35 BRN Output for 5 V
power source of
APP sensor (main) 4.5 – 5.5 V Ignition switch turned ON. —
E23-36 YEL APP sensor (sub)
signal 1.55 – 1.65 V
Ignition switch turned ON
and accelerator pedal at
idle position after warmed
up engine.
—
4.18 – 5.12 V Ignition switch turned ON
and accelerator pedal at
full depressed position
after warmed up engine.
E23-37 YEL APP sensor (main)
signal 0.75 – 0.85 V
Ignition switch turned ON
and accelerator pedal at
idle position after warmed
up engine.
—
3.46 – 4.24 V Ignition switch turned ON
and accelerator pedal at
full depressed position
after warmed up engine.
E23-38 — — — — —
E23-39 — — — — —
E23-40 — — — — —
E23-41 — — — — —
E23-42 — — — — —
E23-43 — — — — —
E23-44 — — — — —
Terminal
No. Wire
color Circuit Normal voltage Condition Remarks

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 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