2006 INFINITI M35 cam sensor

TROUBLE DIAGNOSIS
EC-853
[VK45DE]
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Revision: 2006 January2006 M35/M45MASS AIRFLOW
[gꞏm/s]Indicates the mass air flow computed by
ECM according to the signal voltage of
the mass air flow sensor.
PURG VOL C/V
[%]
Indicates the EVAP canister purge vol-
ume control solenoid valve control value
computed by the ECM according to the
input signals.
The opening becomes larger as the value
increases.
INT/V TIM (B1)
[
CA]Indicates [CA] of intake camshaft
advanced angle.
INT/V TIM (B2)
[
CA]
INT/V SOL (B1) [%]
The control value of the intake valve tim-
ing control solenoid valve (determined by
ECM according to the input signals) is
indicated.
The advance angle becomes larger as
the value increases. INT/V SOL (B2) [%]
VIAS S/V
[ON/OFF]
The control condition of the VIAS control
solenoid valve (determined by ECM
according to the input signals) is indi-
cated.
OFF: VIAS control solenoid valve is not
operating.
ON: VIAS control solenoid valve is oper-
ating.
AIR COND RLY
[ON/OFF]
The air conditioner relay control condition
(determined by ECM according to the
input signals) is indicated.
FUEL PUMP RLY
[ON/OFF]
Indicates the fuel pump relay control con-
dition determined by ECM according to
the input signals.
FPCM [HI/LOW]
The control condition of the fuel pump
control module (FPCM) (determined by
the ECM according to the input signal) is
indicated.
VENT CONT/V
[ON/OFF]
The control condition of the EVAP canis-
ter vent control valve (determined by
ECM according to the input signals) is
indicated.
ON: Closed
OFF: Open
THRTL RELAY
[ON/OFF]
Indicates the throttle control motor relay
control condition determined by the ECM
according to the input signals.
HO2S2 HTR (B1)
[ON/OFF]
Indicates [ON/OFF] condition of heated
oxygen sensor 2 heater determined by
ECM according to the input signals. HO2S2 HTR (B2)
[ON/OFF]
I/P PULLY SPD
[rpm]
Indicates the engine speed computed
from the turbine revolution sensor signal. Monitored item
[Unit]ECM
INPUT
SIG-
NALSMAIN
SIG-
NALSDescription Remarks

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.

EC-862
[VK45DE]
TROUBLE DIAGNOSIS
Revision: 2006 January2006 M35/M45
CONSULT-II Reference Value in Data MonitorNBS005AP
Remarks: Specification data are reference values. Specification data are output/input values which are detected or supplied by the ECM at the connector.
* Specification data may not be directly related to their components signals/values/operations.
i.e. Adjust ignition timing with a timing light before monitoring IGN TIMING, because the monitor may show the specification data in
spite of the ignition timing not being adjusted to the specification data. This IGN TIMING monitors the data calculated by the ECM
according to the signals input from the camshaft position sensor and other ignition timing related sensors.
MONITOR ITEM CONDITION SPECIFICATION
ENG SPEED
Run engine and compare CONSULT-II value with the tachometer indication.Almost the same speed as
the tachometer indication.
MAS A/F SE-B1 See EC-868, "
TROUBLE DIAGNOSIS - SPECIFICATION VALUE" .
B/FUEL SCHDL See EC-868, "
TROUBLE DIAGNOSIS - SPECIFICATION VALUE" .
A/F ALPHA-B1
A/F ALPHA-B2See EC-868, "
TROUBLE DIAGNOSIS - SPECIFICATION VALUE" .
COOLAN TEMP/S
Engine: After warming up More than 70C (158F)
A/F SEN1 (B1)
A/F SEN1 (B2)
Engine: After warming up Maintaining engine speed at 2,000 rpm Fluctuates around 1.5 V
HO2S2 (B1)
HO2S2 (B2)
Engine: After warming up
After keeping engine speed
between 3,500 and 4,000 rpm for
1 minute and at idle for 1 minute
under no loadRevving engine from idle up to 3,000 rpm
quickly.0 - 0.3V Approx. 0.6 -
1.0V
HO2S2 MNTR (B1)
HO2S2 MNTR (B2)
Engine: After warming up
After keeping engine speed
between 3,500 and 4,000 rpm for
1 minute and at idle for 1 minute
under no loadRevving engine from idle up to 3,000 rpm
quickly.LEAN RICH
VHCL SPEED SE
Turn drive wheels and compare CONSULT-II value with the speedometer
indication.Almost the same speed as
speedometer indication
BATTERY VOLT
Ignition switch: ON (Engine stopped) 11 - 14V
ACCEL SEN 1
ACCEL SEN 2*
1Ignition switch: ON
(Engine stopped)Accelerator pedal: Fully released 0.4 - 1.1V
Accelerator pedal: Fully depressed 3.7 - 4.8V
THRTL SEN 1
THRTL SEN 2*
1
Ignition switch: ON
(Engine stopped)
Selector lever: DAccelerator pedal: Fully released More than 0.36V
Accelerator pedal: Fully depressed Less than 4.75V
EVAP SYS PRES
Ignition switch: ON Approx. 1.8 - 4.8V
START SIGNAL
Ignition switch: ON START ON OFF ON OFF
CLSD THL POS
Ignition switch: ON
(Engine stopped)Accelerator pedal: Fully released ON
Accelerator pedal: Slightly depressed OFF
AIR COND SIG
Engine: After warming up, idle
the engineAir conditioner switch: OFF OFF
Air conditioner switch: ON
(Compressor operates.)ON
P/N POSI SW
Ignition switch: ONSelector lever: P or N ON
Selector lever: Except above OFF
PW/ST SIGNAL
Engine: After warming up, idle
the engineSteering wheel: Not being turned
(Forward direction)OFF
Steering wheel: Being turned ON
LOAD SIGNAL
Ignition switch: ONRear window defogger switch: ON
and/or
Lighting switch: 2ND positionON
Rear window defogger switch and light-
ing switch: OFFOFF
IGNITION SW
Ignition switch: ON OFF ON ON OFF ON

EC-874
[VK45DE]
TROUBLE DIAGNOSIS - SPECIFICATION VALUE
Revision: 2006 January2006 M35/M45
16. CHECK “A/F ALPHA-B1”, “A/F ALPHA-B2”
1. Start engine.
2. Select “A/F ALPHA-B1”, “A/F ALPHA-B2” in “DATA MONITOR (SPEC)” mode, and make sure that the
each indication is within the SP value.
OK or NG
OK >>INSPECTION END
NG >> Detect malfunctioning part according to EC-820, "
Symptom Matrix Chart" .
17. CHECK “B/FUEL SCHDL”
Select “B/FUEL SCHDL” in “DATA MONITOR (SPEC)” mode, and
make sure that the indication is within the SP value.
OK or NG
OK >>INSPECTION END
NG (More than the SP value)>>GO TO 18.
NG (Less than the SP value)>>GO TO 25.
18. DETECT MALFUNCTIONING PART
1. Check for the cause of large engine friction. Refer to the following.
–Engine oil level is too high
–Engine oil viscosity
–Belt tension of power steering, alternator, A/C compressor, etc. is excessive
–Noise from engine
–Noise from transmission, etc.
2. Check for the cause of insufficient combustion. Refer to the following.
–Valve clearance malfunction
–Intake valve timing control function malfunction
–Camshaft sprocket installation malfunction, etc.
>> Repair or replace malfunctioning part, and then GO TO 30.
19. CHECK INTAKE SYSTEM
Check for the cause of uneven air flow through mass air flow sensor. Refer to the following.
Crushed air ducts
Malfunctioning seal of air cleaner element
Uneven dirt of air cleaner element
Improper specification of intake air system
OK or NG
OK >> GO TO 21.
NG >> Repair or replace malfunctioning part, and then GO TO 20.
PBIB2332E

DTC P0011, P0021 IVT CONTROL
EC-891
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Revision: 2006 January2006 M35/M45
DTC P0011, P0021 IVT CONTROLPFP:23796
DescriptionNBS005B9
SYSTEM DESCRIPTION
*: This signal is sent to the ECM through CAN communication line
This mechanism hydraulically controls cam phases continuously with the fixed operating angle of the intake
valve.
The ECM receives signals such as crankshaft position, camshaft position, engine speed, and engine coolant
temperature. Then, the ECM sends ON/OFF pulse duty signals to the intake valve timing (IVT) control sole-
noid valve depending on driving status. This makes it possible to control the shut/open timing of the intake
valve to increase engine torque in low/mid speed range and output in high-speed range.
COMPONENT INSPECTION
Intake Valve Timing Control Solenoid Valve
Intake Valve Timing (IVT) control solenoid valve is activated by ON/
OFF pulse duty (ratio) signals from the ECM.
The IVT control solenoid valve changes the oil amount and direction
of flow through intake valve timing control unit or stops oil flow.
The longer pulse width advances valve angle.
The shorter pulse width retards valve angle.
When ON and OFF pulse widths become equal, the solenoid valve
stops oil pressure flow to fix the intake valve angle at the control
position.
Sensor Input signal to ECM function ECM Actuator
Crankshaft position sensor (POS)
Camshaft position sensor (PHASE)Engine speed
Intake valve
timing controlIntake valve timing control
solenoid valve Intake valve timing control position sensor Intake valve timing signal
Engine coolant temperature sensor Engine coolant temperature
Wheel sensor* Vehicle speed
PBIB3276E
PBIB1842E

EC-892
[VK45DE]
DTC P0011, P0021 IVT CONTROL
Revision: 2006 January2006 M35/M45
Intake Valve Timing Control Position Sensor
Intake valve timing control position sensors are located in the front of
cylinder heads in both bank 1 and bank 2.
This sensor uses a Hall IC.
The cam position is determined by the intake primary cam sprocket
concave (in three places). The ECM provides feedback to the intake
valve timing control for appropriate target valve open-close timing
according to drive conditions based on detected cam position.
CONSULT-II Reference Value in Data Monitor ModeNBS005BA
Specification data are reference values.
On Board Diagnosis LogicNBS005BB
FAIL-SAFE MODE
When the malfunction is detected, the ECM enters fail-safe mode.
SEF359Z
MONITOR ITEM CONDITION SPECIFICATION
INT/V TIM (B1)
INT/V TIM (B2)
Engine: After warming up
Selector lever: P or N
Air conditioner switch: OFF
No loadIdle
5 - 5CA
2,000 rpm Approx. 0
- 20CA
INT/V SOL (B1)
INT/V SOL (B2)
Engine: After warming up
Selector lever: P or N
Air conditioner switch: OFF
No loadIdle 0% - 2%
2,000 rpm Approx. 25% - 50%
DTC No. Trouble diagnosis name Detecting condition Possible cause
P0011
0011
(Bank 1)
Intake valve timing control
performanceAThe alignment of the intake valve timing
control has been misresistered.
Harness or connectors
(Intake valve timing control solenoid
valve circuit is open or shorted.)
Harness or connectors
(Intake valve timing control position
sensor circuit is open or shorted.)
Intake valve timing control solenoid
valve
Intake valve timing control position
sensor
Crankshaft position sensor (POS)
Camshaft position sensor (PHASE)
Accumulation of debris to the signal
pick-up portion of the camshaft
sprocket
Timing chain installation
Foreign matter caught in the oil
groove for intake valve timing control P0021
0021
(Bank 2)BThere is a gap between angle of target
and phase-control angle degree.
Detected items Engine operating condition in fail-safe mode
Intake valve timing control The signal is not energized to the solenoid valve and the valve control does not function

EC-902
[VK45DE]
DTC P0011, P0021 IVT CONTROL
Revision: 2006 January2006 M35/M45
12. CHECK INTAKE VALVE TIMING CONTROL SOLENOID VALVE
Refer to EC-902, "
Component Inspection" .
OK or NG
OK >> GO TO 13.
NG >> Replace intake valve timing control solenoid valve.
13. CHECK CRANKSHAFT POSITION SENSOR (POS)
Refer to EC-1105, "
Component Inspection" .
OK or NG
OK >> GO TO 14.
NG >> Replace crankshaft position sensor (POS).
14. CHECK CAMSHAFT POSITION SENSOR (PHASE)
Refer to EC-1112, "
Component Inspection" .
OK or NG
OK >> GO TO 15.
NG >> Replace camshaft position sensor (PHASE).
15. CHECK CAMSHAFT SPROCKET
Check accumulation of debris to the signal pick-up portion of the camshaft sprocket. Refer to EM-215, "
CAM-
SHAFT" .
OK or NG
OK >> GO TO 16.
NG >> Remove debris and clean the signal pick-up cutout of camshaft sprocket.
16. CHECK TIMING CHAIN INSTALLATION
Check service records for any recent repairs that may cause timing chain misaligned.
Are there any service records that may cause timing chain misaligned?
Ye s o r N o
Yes >> Check timing chain installation. Refer to EM-203, "TIMING CHAIN" .
No >> GO TO 17.
17. CHECK LUBRICATION CIRCUIT
Refer to EM-221, "
Inspection of Camshaft Sprocket (INT) Oil Groove" .
OK or NG
OK >> GO TO 18.
NG >> Clean lubrication line.
18. CHECK INTERMITTENT INCIDENT
Refer to EC-878, "
TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .
>>INSPECTION END
Component InspectionNBS005BF
INTAKE VALVE TIMING CONTROL POSITION SENSOR
1. Disconnect intake valve timing control position sensor harness connector.
2. Loosen the fixing bolt of the sensor.
3. Remove the sensor.

EC-904
[VK45DE]
DTC P0031, P0032, P0051, P0052 A/F SENSOR 1 HEATER
Revision: 2006 January2006 M35/M45
DTC P0031, P0032, P0051, P0052 A/F SENSOR 1 HEATERPFP:22693
DescriptionNBS005BH
SYSTEM DESCRIPTION
The ECM performs ON/OFF duty control of the A/F sensor 1 heater corresponding to the engine operating
condition to keep the temperature of A/F sensor 1 element at the specified range.
CONSULT-II Reference Value in Data Monitor ModeNBS005BI
Specification data are reference values.
On Board Diagnosis LogicNBS005BJ
DTC Confirmation ProcedureNBS005BK
NOTE:
If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at
least 10 seconds before conducting the next test.
TESTING CONDITION:
Before performing the following procedure, confirm that battery voltage is between 10.5V and 16V at
idle.
WITH CONSULT-II
1. Turn ignition switch ON and select “DATA MONITOR” mode with
CONSULT-II.
2. Start engine and let it idle for at least 10 seconds.
3. If 1st trip DTC is detected, go to EC-908, "
Diagnostic Procedure"
.
WITH GST
Follow the procedure “WITH CONSULT-II” above.
Sensor Input Signal to ECM ECM function Actuator
Camshaft position sensor (PHASE)
Crankshaft position sensor (POS)Engine speed
Air fuel ratio (A/F) sensor 1
heater controlAir fuel ratio (A/F) sensor 1
heater
Mass air flow sensor Amount of intake air
MONITOR ITEM CONDITION SPECIFICATION
A/F S1 HTR (B1)
A/F S1 HTR (B2)
Engine: After warming up, idle the engine 0 - 100%
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P0031
0031
(Bank 1)Air fuel ratio (A/F) sensor
1 heater control circuit
lowThe current amperage in the A/F sensor 1 heater
circuit is out of the normal range.
(An excessively low voltage signal is sent to ECM
through the A/F sensor 1 heater.)
Harness or connectors
(The A/F sensor 1 heater circuit is
open or shorted.)
A/F sensor 1 heater P0051
0051
(Bank 2)
P0032
0032
(Bank 1)Air fuel ratio (A/F) sensor
1 heater control circuit
highThe current amperage in the A/F sensor 1 heater
circuit is out of the normal range.
(An excessively high voltage signal is sent to ECM
through the A/F sensor 1 heater.)
Harness or connectors
(The A/F sensor 1 heater circuit is
shorted.)
A/F sensor 1 heater P0052
0052
(Bank 2)
SEF058Y