Crankshaft Position Sensor INFINITI M35 2006 Factory Workshop Manual

EC-792
[VK45DE]
BASIC SERVICE PROCEDURE
Revision: 2006 January2006 M35/M45
15. CHECK IGNITION TIMING AGAIN
1. Run engine at idle.
2. Check ignition timing with a timing light.
Refer to EC-793, "
IGNITION TIMING" .
–Timing indicator (1)
OK or NG
OK >> GO TO 19.
NG >> GO TO 16.
16. CHECK TIMING CHAIN INSTALLATION
Check timing chain installation. Refer to EM-203, "
TIMING CHAIN" .
OK or NG
OK >> GO TO 17.
NG >> 1. Repair the timing chain installation.
2. GO TO 4.
17. DETECT MALFUNCTIONING PART
Check the following.
Check camshaft position sensor (PHASE) and circuit. Refer to EC-1106 .
Check crankshaft position sensor (POS) and circuit. Refer to EC-1099 .
OK or NG
OK >> GO TO 18.
NG >> 1. Repair or replace.
2. GO TO 4.
18. CHECK ECM FUNCTION
1. Substitute another known-good ECM to check ECM function. (ECM may be the cause of an incident, but
this is a rare case.)
2. Perform initialization of IVIS (NATS) system and registration of all IVIS (NATS) ignition key IDs. Refer to
BL-252, "
ECM Re-Communicating Function" .
>> GO TO 4.
19. INSPECTION END
Did you replace ECM, referring this Basic Inspection procedure?
Ye s o r N o
Ye s > > 1 . P e r f o r m EC-806, "VIN Registration" .
2.INSPECTION END
No >>INSPECTION END 12
5 BTDC (in P or N position)
PBIB2719E

BASIC SERVICE PROCEDURE
EC-799
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Revision: 2006 January2006 M35/M45
6. PERFORM IDLE AIR VOLUME LEARNING
Perform EC-807, "
Idle Air Volume Learning" .
Is Idle Air Volume Learning carried out successfully?
Ye s o r N o
Ye s > > G O T O 7 .
No >> 1. Follow the instruction of Idle Air Volume Learning.
2. GO TO 4.
7. CHECK TARGET IDLE SPEED AGAIN
With CONSULT-II
1. Start engine and warm it up to normal operating temperature.
2. Read idle speed in “DATA MONITOR” mode with CONSULT-II.
Refer to EC-793, "
IDLE SPEED" .
Without CONSULT-II
1. Start engine and warm it up to normal operating temperature.
2. Check idle speed.
Refer to EC-793, "
IDLE SPEED" .
OK or NG
OK >> GO TO 10.
NG >> GO TO 8.
8. DETECT MALFUNCTIONING PART
Check the following.
Check camshaft position sensor (PHASE) and circuit. Refer to EC-1106, "DTC P0340 CAMSHAFT POSI-
TION (CMP) SENSOR (PHASE)" .
Check crankshaft position sensor (POS) and circuit. Refer to EC-1099, "DTC P0335 CKP SENSOR
(POS)" .
OK or NG
OK >> GO TO 9.
NG >> 1. Repair or replace.
2. GO TO 4.
9. CHECK ECM FUNCTION
1. Substitute another known-good ECM to check ECM function. (ECM may be the cause of an incident, but
this is a rare case.)
2. Perform initialization of IVIS (NATS) system and registration of all IVIS (NATS) ignition key IDs. Refer to
BL-252, "
ECM Re-Communicating Function" .
>> GO TO 4. 650
50 rpm (in P or N position)
650
50 rpm (in P or N position)

BASIC SERVICE PROCEDURE
EC-801
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Revision: 2006 January2006 M35/M45
15. CHECK IGNITION TIMING AGAIN
1. Run engine at idle.
2. Check ignition timing with a timing light.
Refer to EC-793, "
IGNITION TIMING" .
–Timing indicator (1)
OK or NG
OK (With CONSULT-II)>>GO TO 19.
OK (With GST)>>GO TO 20.
NG >> GO TO 16.
16. CHECK TIMING CHAIN INSTALLATION
Check timing chain installation. Refer to EM-203, "
TIMING CHAIN" .
OK or NG
OK >> GO TO 17.
NG >> 1. Repair the timing chain installation.
2. GO TO 4.
17. DETECT MALFUNCTIONING PART
Check the following.
Check camshaft position sensor (PHASE) and circuit. Refer to EC-1106, "DTC P0340 CAMSHAFT POSI-
TION (CMP) SENSOR (PHASE)" .
Check crankshaft position sensor (POS) and circuit. Refer to EC-1099, "DTC P0335 CKP SENSOR
(POS)" .
OK or NG
OK >> GO TO 18.
NG >> 1. Repair or replace.
2. GO TO 4.
18. CHECK ECM FUNCTION
1. Substitute another known-good ECM to check ECM function. (ECM may be the cause of an incident, but
this is a rare case.)
2. Perform initialization of IVIS (NATS) system and registration of all IVIS (NATS) ignition key IDs. Refer to
BL-252, "
ECM Re-Communicating Function" .
>> GO TO 4. 12
5 BTDC (in P or N position)
PBIB2719E

TROUBLE DIAGNOSIS
EC-817
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Revision: 2006 January2006 M35/M45
DTC Inspection Priority ChartNBS005AF
If some DTCs are displayed at the same time, perform inspections one by one based on the following priority
chart.
NOTE:
If DTC U1000 or U1001 is displayed with other DTC, first perform the trouble diagnosis for DTC
U1000, U1001. Refer to EC-886, "
DTC U1000, U1001 CAN COMMUNICATION LINE" .
If DTC U1010 is displayed with other DTC, first perform the trouble diagnosis for DTC U1010. Refer
to EC-889, "
DTC U1010 CAN COMMUNICATION" .
Priority Detected items (DTC)
1
U1000 U1001 CAN communication line
U1010 CAN communication
P0101 P0102 P0103 Mass air flow sensor
P0112 P0113 P0127 Intake air temperature sensor
P0117 P0118 P0125 Engine coolant temperature sensor
P0122 P0123 P0222 P0223 P1225 P1226 P2135 Throttle position sensor
P0128 Thermostat function
P0181 P0182 P0183 Fuel tank temperature sensor
P0327 P0328 P0332 P0333 Knock sensor
P0335 Crankshaft position sensor (POS)
P0340 Camshaft position sensor (PHASE)
P0460 P0461 P0462 P0463 Fuel level sensor
P0500 Vehicle speed sensor
P0605 ECM
P0643 Sensor power supply
P0700 TCM
P0705 Park/Neutral position (PNP) switch
P0850 Park/Neutral position (PNP) switch
P1550 P1551 P1552 P1553 P1554 Battery current sensor
P1610 - P1615 NATS
P2122 P2123 P2127 P2128 P2138 Accelerator pedal position sensor

EC-820
[VK45DE]
TROUBLE DIAGNOSIS
Revision: 2006 January2006 M35/M45
Symptom Matrix ChartNBS005AH
SYSTEM — BASIC ENGINE CONTROL SYSTEM
SYMPTOM
Reference
page
HARD/NO START/RESTART (EXCP. HA)
ENGINE STALL
HESITATION/SURGING/FLAT SPOT
SPARK KNOCK/DETONATION
LACK OF POWER/POOR ACCELERATION
HIGH IDLE/LOW IDLE
ROUGH IDLE/HUNTING
IDLING VIBRATION
SLOW/NO RETURN TO IDLE
OVERHEATS/WATER TEMPERATURE HIGH
EXCESSIVE FUEL CONSUMPTION
EXCESSIVE OIL CONSUMPTION
BATTERY DEAD (UNDER CHARGE)
Warranty symptom code AA AB AC AD AE AF AG AH AJ AK AL AM HA
Fuel Fuel pump circuit 11232 22 3 2EC-1427
Fuel pressure regulator system 3 3 4 4 4 4 4 4 4 4EC-809
Fuel injector circuit 11232 22 2EC-1420
Evaporative emission system 334444444 4EC-749
Air Positive crankcase ventilation sys-
tem
334444444 41EC-761
Incorrect idle speed adjustment 1 1 1 1 1EC-788
Electric throttle control actuator 112332222 2 2EC-1344,
EC-1356
IgnitionIncorrect ignition timing adjustment33111 11 1EC-788
Ignition circuit 11222 22 2EC-1407
Main power supply and ground circuit 22333 33 23EC-879
Mass air flow sensor circuit
1
122
222 2EC-927,
EC-936
Engine coolant temperature sensor circuit
333EC-948,
EC-961
Air fuel ratio (A/F) sensor 1 circuitEC-969
,
EC-979
,
EC-988
,
EC-997
,
EC-1387
Throttle position sensor circuit
22EC-954
,
EC-1077
,
EC-1259
,
EC-1261
,
EC-1372
Accelerator pedal position sensor circuit 3 2 1EC-1218
,
EC-1358
,
EC-1365
,
EC-1379
Knock sensor circuit 2 3EC-1094
Crankshaft position sensor (POS) circuit 2 2EC-1099
Camshaft position sensor (PHASE) circuit 3 2EC-1106
Vehicle speed signal circuit 2 3 3 3EC-1200
Power steering pressure sensor circuit 2 3 3EC-1206

TROUBLE DIAGNOSIS
EC-829
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Revision: 2006 January2006 M35/M45
: Vehicle front
1. EVAP canister purge volume control
solenoid valve2. EVAP service port 3. EVAP canister vent control valve
4. EVAP control system pressure sensor 5. EVAP canister 6. Crankshaft position sensor (POS)
7. Power steering pressure sensor
PBIB2679E

EC-838
[VK45DE]
TROUBLE DIAGNOSIS
Revision: 2006 January2006 M35/M45
12 R/GPower steering pressure
sensor[Engine is running]Steering wheel: Being turned0.5 - 4.5V
[Engine is running]
Steering wheel: Not being turned0.4 - 0.8V
13 W/RCrankshaft position sensor
(POS)[Engine is running]
Warm-up condition
Idle speed
NOTE:
The pulse cycle changes depending on rpm
at idle1.0 - 2.0V
[Engine is running]
Engine speed: 2,000 rpm1.0 - 2.0V
14 GCamshaft position sensor
(PHASE)[Engine is running]
Warm-up condition
Idle speed
NOTE:
The pulse cycle changes depending on rpm
at idle1.0 - 4.0V
[Engine is running]
Engine speed: 2,000 rpm1.0 - 4.0V
15 W Knock sensor (bank 1)[Engine is running]
Idle speedApproximately 2.5V
16 W/L
A/F sensor 1 (bank 1)[Engine is running]
Warm-up condition
Idle speedApproximately 3.1V
35 GR/LApproximately 2.6V
56 LG/BApproximately 2.3V
75 YApproximately 2.3V TER-
MINAL
NO.WIRE
COLORITEM CONDITION DATA (DC Voltage)
PBIB1041E
PBIB1042E
PBIB1039E
PBIB1040E

TROUBLE DIAGNOSIS
EC-847
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Revision: 2006 January2006 M35/M45
ENGINE CONTROL COMPONENT PARTS/CONTROL SYSTEMS APPLICATION
ItemDIAGNOSTIC TEST MODE
WORK
SUP-
PORTSELF-DIAGNOS-
TIC RESULTS
DATA
MONI-
TORDATA
MONI-
TOR
(SPEC)ACTIVE
TESTDTC & SRT
CONFIRMATION
DTC*1FREEZE
FRAME
DATA*2SRT
STATUSDTC
WORK
SUP-
PORT
ENGINE CONTROL COMPONENT PARTS
INPUT
Crankshaft position sensor (POS)
Camshaft position sensor
(PHASE)
Mass air flow sensor
Engine coolant temperature sen-
sor
Air fuel ratio (A/F) sensor 1
Heated oxygen sensor 2
Wheel sensor
Accelerator pedal position sensor
Throttle position sensor
Fuel tank temperature sensor
EVAP control system pressure
sensor
Intake air temperature sensor
Knock sensor
Refrigerant pressure sensor
Closed throttle position switch
(accelerator pedal position sensor
signal)
Air conditioner switch
Park/neutral position (PNP) switch
Stop lamp switch
Power steering pressure sensor
Battery voltage
Load signal
Intake valve timing control position
sensor
Fuel level sensor
Battery current sensor
ICC steering switch
ASCD steering switch
ICC brake switch
ASCD brake switch

TROUBLE DIAGNOSIS
EC-851
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Revision: 2006 January2006 M35/M45
*: The items are the same as those of 1st trip freeze frame data.
DATA MONITOR MODE
Monitored Item
: Applicable ABSOL THꞏP/S [%]
The throttle valve opening angle at the moment a malfunction is detected is displayed.
B/FUEL SCHDL
[msec]
The base fuel schedule at the moment a malfunction is detected is displayed.
INT/A TEMP SE [
C]
or [
F]The intake air temperature at the moment a malfunction is detected is displayed. Freeze frame data
item*Description
Monitored item
[Unit]ECM
INPUT
SIG-
NALSMAIN
SIG-
NALSDescription Remarks
ENG SPEED [rpm]
Indicates the engine speed computed
from the signal of the crankshaft position
sensor (POS) and camshaft position sen-
sor (PHASE).Accuracy becomes poor if engine speed
drops below the idle rpm.
If the signal is interrupted while the
engine is running, an abnormal value may
be indicated.
MAS A/F SE-B1 [V]
The signal voltage of the mass air flow
sensor is displayed.When the engine is stopped, a certain
value is indicated.
B/FUEL SCHDL
[msec]
“Base fuel schedule” indicates the fuel
injection pulse width programmed into
ECM, prior to any learned on board cor-
rection.
A/F ALPHA-B1 [%]
The mean value of the air-fuel ratio feed-
back correction factor per cycle is indi-
cated.When the engine is stopped, a certain
value is indicated.
This data also includes the data for the
air-fuel ratio learning control. A/F ALPHA-B2 [%]
COOLAN TEMP/S
[
C] or [F]
The engine coolant temperature (deter-
mined by the signal voltage of the engine
coolant temperature sensor) is displayed.
When the engine coolant temperature
sensor is open or short-circuited, ECM
enters fail-safe mode. The engine coolant
temperature determined by the ECM is
displayed.
A/F SEN1 (B1) [V]
The A/F signal computed from the input
signal of the air fuel ratio (A/F) sensor 1 is
displayed. A/F SEN1 (B2) [V]
HO2S2 (B1) [V]The signal voltage of the heated oxygen
sensor 2 is displayed.
HO2S2 (B2) [V]
HO2S2 MNTR (B1)
[RICH/LEAN]Display of heated oxygen sensor 2 signal:
RICH: means the amount of oxygen after
three way catalyst is relatively small.
LEAN: means the amount of oxygen after
three way catalyst is relatively large.
When the engine is stopped, a certain
value is indicated.
HO2S2 MNTR (B2)
[RICH/LEAN]
VHCL SPEED SE
[km/h] or [mph]The vehicle speed computed from the
vehicle speed signal sent from combina-
tion meter is displayed.
BATTERY VOLT
[V]
The power supply voltage of ECM is dis-
played.
ACCEL SEN 1 [V]
The accelerator pedal position sensor
signal voltage is displayed.ACCEL SEN 2 signal is converted be
ECM internally. Thus, it differs from ECM
terminal voltage signal. ACCEL SEN 2 [V]

TROUBLE DIAGNOSIS
EC-855
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Revision: 2006 January2006 M35/M45
NOTE:
Any monitored item that does not match the vehicle being diagnosed is deleted from the display automatically.
DATA MONITOR (SPEC) MODE
Monitored Item
NOTE:
Any monitored item that does not match the vehicle being diagnosed is deleted from the display automatically. ALTDUTY [%]
Indicates the duty ratio of the power gen-
eration command value. The ratio is cal-
culated by ECM based on the battery
current sensor signal.
BAT CUR SEN
[mV]
The signal voltage of battery current sen-
sor is displayed.
ALT DUTY SIG
The control condition of the power gener-
ation voltage variable control (determined
by ECM according to the input signals) is
indicated.
ON: Power generation voltage variable
control is active.
OFF: Power generation voltage variable
control is inactive.
Voltage [V]
Voltage, frequency, duty cycle or pulse
width measured by the probe.
Only “#” is displayed if item is unable to
be measured.
Figures with “#”s are temporary ones.
They are the same figures as an actual
piece of data which was just previously
measured. Frequency [msec],
[Hz] or [%]
DUTY-HI
DUTY-LOW
PLS WIDTH-HI
PLS WIDTH-LOWMonitored item
[Unit]ECM
INPUT
SIG-
NALSMAIN
SIG-
NALSDescription Remarks
Monitored item [Unit]ECM
input
signalsMain
signalsDescription Remarks
ENG SPEED [rpm]
Indicates the engine speed computed
from the signal of the crankshaft position
sensor (POS) and camshaft position
sensor (PHASE).
MAS A/F SE-B1 [V]
The signal voltage of the mass air flow
sensor specification is displayed.When engine is running specification
range is indicated.
B/FUEL SCHDL
[msec]
“Base fuel schedule” indicates the fuel
injection pulse width programmed into
ECM, prior to any learned on board cor-
rection.
When engine is running specification
range is indicated.
A/F ALPHA-B1 [%]
A/F ALPHA-B2 [%]
The mean value of the air-fuel ratio feed-
back correction factor per cycle is indi-
cated.When engine is running specification
range is indicated.
This data also includes the data for the
air-fuel ratio learning control.