2008 INFINITI FX35 sensor

EC-36
< SERVICE INFORMATION >[VQ35DE]
AIR CONDITIONING CUT CONTROL
AIR CONDITIONING CUT CONTROL
Input/Output Signal ChartINFOID:0000000001325899
*1: This signal is sent to the ECM through CAN communication line.
*2: ECM determines the start signal status by the signals of engine speed and battery voltage.
System DescriptionINFOID:0000000001325900
This system improves engine operati
on when the air conditioner is used.
Under the following conditions, the air conditioner is turned OFF.
 When the accelerator pedal is fully depressed.
 When cranking the engine.
 At high engine speeds.
 When the engine coolant temperature becomes excessively high.
 When operating power steering during low engine speed or low vehicle speed.
 When engine speed is excessively low.
 When refrigerant pressure is excessively low or high.
Sensor Input Signal to ECM ECM function Actuator
Air conditioner switch Air conditioner ON signal*
1
Air conditioner
cut controlAir conditio
ner relay
Accelerator pedal position sensor Accelerator pedal position
Throttle position sensor Throttle position
Crankshaft position sensor (POS)
Camshaft position sensor (PHASE)
Engine speed*2
Engine coolant temperature sensor Engine coolant temperature
Battery
Battery voltage*
2
Refrigerant pressure sensor Refrigerant pressure
Power steering pressure sensor Power steering operation
Wheel sensorVehicle speed*
1
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AUTOMATIC SPEED CONTROL DEVICE (ASCD)EC-37
< SERVICE INFORMATION > [VQ35DE]
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AUTOMATIC SPEED CONTROL DEVICE (ASCD)
System DescriptionINFOID:0000000001325901
INPUT/OUTPUT SIGNAL CHART
*: This signal is sent to the ECM through CAN communication line.
BASIC ASCD SYSTEM
Refer to Owner's Manual for ASCD operating instructions.
Automatic Speed Control Device (ASCD) allows a dr
iver to keep vehicle at predetermined constant speed
without depressing accelerator pedal. Driver can set vehicle speed in advance between approximately 40 km/
h (25 MPH) and 144 km/h (89 MPH).
ECM controls throttle angle of electric thro ttle control actuator to regulate engine speed.
Operation status of ASCD is indicated by CRUISE i ndicator and SET indicator in combination meter. If any
malfunction occurs in ASCD system, it automatically deactivates control.
NOTE:
Always drive vehicle in safe manner according to traffic conditions and obey all traffic laws.
SET OPERATION
Press MAIN switch. (The CRUISE indicator in combination meter illuminates.)
When vehicle speed reaches a desired speed between approximately 40 km/h (25 MPH) and 144 km/h (89
MPH), press SET/COAST switch. (Then SET indi cator in combination meter illuminates.)
ACCELERATOR OPERATION
If the RESUME/ACCELERATE switch is pressed during cruise control driving, increase the vehicle speed until
the switch is released or vehicle speed reac hes maximum speed controlled by the system.
And then ASCD will keep the new set speed.
CANCEL OPERATION
When any of following conditions exist, cruise operation will be canceled.
 CANCEL switch is pressed
 More than 2 switches at ASCD steering switch are pressed at the same time (Set speed will be cleared)
 Brake pedal is depressed
 Selector lever is changed to N, P, R position
 Vehicle speed decreased to 13 km/h (8 MPH) lower than the set speed
 VDC/TCS system is operated
When the ECM detects any of the following conditions, the ECM will cancel the cruise operation and inform
the driver by blinking indicator lamp.
 Engine coolant temperature is slightly higher than the normal operating temperature, CRUISE lamp may
blink slowly.
When the engine coolant temperature decreases to t he normal operating temperature, CRUISE lamp will
stop blinking and the cruise operation will be able to work by depressing SET/COAST switch or RESUME/
ACCELERATE switch.
 Malfunction for some self-diagnoses regarding ASCD control: SET lamp will blink quickly.
If MAIN switch is turned to OFF during ASCD is activated, all of ASCD operations will be canceled and vehicle
speed memory will be erased.
COAST OPERATION
When the SET/COAST switch is pressed during cruise control driving, decrease vehicle set speed until the
switch is released. And then ASCD will keep the new set speed.
RESUME OPERATION
Sensor Input signal to ECM ECM function Actuator
ASCD brake switch Brake pedal operation
ASCD vehicle speed controlElectric throttle control
actuator
Stop lamp switch Brake pedal operation
ASCD steering switch ASCD steering switch operation
Park/neutral position (PNP) switch Gear position
Wheel sensor. Vehicle speed*
TCM Powertrain revolution*
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EVAPORATIVE EMISSION SYSTEMEC-43
< SERVICE INFORMATION > [VQ35DE]
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Check EVAP canister as follows:
1. Block port
B.
2. Blow air into port A and check that it flows freely out of port C.
3. Release blocked port B.
4. Apply vacuum pressure to port B and check that vacuum pres-
sure exists at the ports A and C.
5. Block port A and B.
6. Apply pressure to port C and check that there is no leakage.
FUEL TANK VACUUM RELIEF VALVE (BUILT INTO FUEL FILLER CAP)
1. Wipe clean valve housing.
2. Check valve opening pressure and vacuum.
3. If out of specificat ion, replace fuel filler cap as an assembly.
CAUTION:
Use only a genuine fuel filler cap as a replacement. If an incor-
rect fuel filler cap is used, the MIL may come on.
EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE
Refer to EC-360, "Component Inspection".
FUEL TANK TEMPERATURE SENSOR
Refer to EC-297, "Component Inspection".
EVAP CANISTER VENT CONTROL VALVE
Refer to EC-364, "Component Inspection".
EVAP CONTROL SYSTEM PRESSURE SENSOR
Refer to EC-380, "Component Inspection".
EVAP SERVICE PORT
PBIB1044E
SEF445Y
Pressure:
15.3 - 20.0 kPa (0.156 - 0.204 kg/cm2, 2.22 -
2.90 psi)
Vacuum: −6.0 to −3.3 kPa ( −0.061 to −0.034 kg/cm
2,
− 0.87 to −0.48 psi)
SEF943S
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EC-46
< SERVICE INFORMATION >[VQ35DE]
ON BOARD REFUELING VAPOR RECOVERY (ORVR)
ON BOARD REFUELING VA
POR RECOVERY (ORVR)
System DescriptionINFOID:0000000001325908
From the beginning of refueling, the air and vapor insi de the fuel tank go through refueling EVAP vapor cut
valve and EVAP/ORVR line to the EVAP canister. The vapor is absorbed by the EVAP canister and the air is
released to the atmosphere.
When the refueling has reached the full level of the fuel tank, the refueling EVAP vapor cut valve is closed and
refueling is stopped because of auto shut-off. The vapor which was absorbed by the EVAP canister is purged
during driving.
WARNING:
When conducting inspections below, be sure to observe the following:
 Put a “CAUTION: FLAMMABLE” sign in workshop.
 Do not smoke while servicing fuel system. Keep open flames and sparks away from work area.
 Be sure to furnish the workshop with a CO
2 fire extinguisher.
CAUTION:
 Before removing fuel line parts, carry out the following procedures:
- Put drained fuel in an explosion-pr oof container and put lid on securely.
- Release fuel pressure from fuel line. Refer to EC-87, "
Fuel Pressure Check".
- Disconnect negative battery cable.
 Always replace O-ring when the fuel gauge retainer is removed.
 Do not kink or twist hose and tube when they are installed.
 Do not tighten hose and clamps excessively to avoid damaging hoses.
 After installation, run engine an d check for fuel leaks at connection.
 Do not attempt to top off the fuel tank afte r the fuel pump nozzle shuts off automatically.
Continued refueling may cause fu el overflow, resulting in fuel spray and possibly a fire.
Diagnosis ProcedureINFOID:0000000001325909
SYMPTOM: FUEL ODOR FROM EVAP CANISTER IS STRONG.
1.CHECK EVAP CANISTER
1. Remove EVAP canister with EVAP canister vent control valve and EVAP control system pressure sensor
attached.
2. Weigh the EVAP canister with EVAP canister vent control valve and EVAP control system pressure sensor
attached.
The weight should be l ess than 2.1 kg (4.6 lb).
OK or NG
OK >> GO TO 2.
NG >> GO TO 3.
PBIB1068E
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ON BOARD REFUELING VAPOR RECOVERY (ORVR)EC-47
< SERVICE INFORMATION > [VQ35DE]
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2.CHECK IF EVAP CANISTER
SATURATED WITH WATER
Does water drain from the EVAP canister?
Ye s o r N o
Yes >> GO TO 3.
No >> GO TO 5.
3.REPLACE EVAP CANISTER
Replace EVAP canister with a new one.
>> GO TO 4.
4.DETECT MALFUNCTIONING PART
Check the EVAP hose between EVAP canister and vehicle frame for clogging or poor connection.
>> Repair or replace EVAP hose.
5.CHECK REFUELING EVAP VAPOR CUT VALVE
Refer to EC-48, "
Component Inspection".
OK or NG
OK >> INSPECTION END
NG >> Replace refueling EVAP vapor cut valve with fuel tank.
SYMPTOM: CANNOT REFUEL/FUEL ODOR FROM THE FUEL FILLER OPENING IS STRONG
WHILE REFUELING.
1.CHECK EVAP CANISTER
1. Remove EVAP canister with EVAP canister vent c ontrol valve and EVAP control system pressure sensor
attached.
2. Weigh the EVAP canister with EVAP canister vent control valve and EVAP control system pressure sensor
attached.
The weight should be l ess than 2.1 kg (4.6 lb).
OK or NG
OK >> GO TO 2.
NG >> GO TO 3.
2.CHECK IF EVAP CANISTER SATURATED WITH WATER
Does water drain from the EVAP canister?
Ye s o r N o
Yes >> GO TO 3.
No >> GO TO 5.
3.REPLACE EVAP CANISTER
Replace EVAP canister with a new one.
PBIB1031E
PBIB1031E
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EC-54
< SERVICE INFORMATION >[VQ35DE]
ON BOARD DIAGNOSTIC (OBD) SYSTEM
ON BOARD DIAGNO
STIC (OBD) SYSTEM
IntroductionINFOID:0000000001325914
The ECM has an on board diagnostic system, which detects malfunctions related to engine sensors or actua-
tors. The ECM also records various emission-related diagnostic information including:
The above information can be checked usi ng procedures listed in the table below.
×: Applicable —: Not applicable
*: When DTC and 1st trip DTC simultaneously appear on the display, they cannot be clearly distinguished from each other.
The malfunction indicator lamp (MIL) on the instrument panel lights up when the same malfunction is detected
in two consecutive trips (Two trip detection logic) , or when the ECM enters fail-safe mode. (Refer to EC-95,
"Fail-Safe Chart".)
Two Trip Detection LogicINFOID:0000000001325915
When a malfunction is detected for the 1st time, 1st trip DTC and 1st trip Freeze Frame data are stored in the
ECM memory. The MIL will not light up at this stage. <1st trip>
If the same malfunction is detected again during the next drive, the DTC and Freeze Frame data are stored in
the ECM memory, and the MIL lights up. The MIL lights up at the same time when the DTC is stored. <2nd
trip> The “trip” in the “Two Trip Detection Logic” m eans a driving mode in which self-diagnosis is performed
during vehicle operation. Specific on board diagnostic item s will cause the ECM to light up or blink the MIL,
and store DTC and Freeze Frame data, even in the 1st trip, as shown below.
× : Applicable —: Not applicable
When there is an open circuit on MIL circuit, the ECM c annot warn the driver by lighting up MIL when there is
malfunction on engine control system.
Emission-related diagnostic information Diagnostic service
Diagnostic Trouble Code (DTC) Service $03 of SAE J1979
Freeze Frame data Service $02 of SAE J1979
System Readiness Test (SRT) code Service $01 of SAE J1979
1st Trip Diagnostic Trouble Code (1st Trip DTC) Service $07 of SAE J1979
1st Trip Freeze Frame data
Test values and Test limits Service $06 of SAE J1979
Calibration ID Service $09 of SAE J1979
DTC 1st trip DTC Freeze
Frame data 1st trip Freeze
Frame data SRT code SRT status Test value
CONSULT-III ×× × × × × —
GST ×× × —×××
ECM ××*— — — ×—
Items MIL DTC 1st trip DTC
1st trip 2nd trip 1st trip
displaying 2nd trip
displaying 1st trip
displaying 2nd trip
display- ing
Blinking Lighting
up Blinking Lighting
up
Misfire (Possible three way catalyst
damage) — DTC: P0300 - P0306 is
being detected ×
———— — ×—
Misfire (Possible three way catalyst
damage) — DTC: P0300 - P0306 is
being detected ——
×—— ×——
One trip detection diagnoses (Re-
fer to EC-55, "
Emission-Related Di-
agnostic Information".) —
×—— ×———
Except above — — — ×— ×× —
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ON BOARD DIAGNOSTIC (OBD) SYSTEMEC-55
< SERVICE INFORMATION > [VQ35DE]
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Therefore, when electrical controlled throttle and part
of ECM related diagnoses are continuously detected as
NG for 5 trips, ECM warns the driver that engine c ontrol system malfunctions and MIL circuit is open by means
of operating fail-safe function.
The fail-safe function also operates when above diagnos es except MIL circuit are detected and demands the
driver to repair the malfunction.
Emission-Related Diagnostic InformationINFOID:0000000001325916
EMISSION-RELATED DIAGNOSTIC INFORMATION ITEMS
× : Applicable —: Not applicable
Engine operating condition in fail-safe mode Engine speed will not rise more than 2,500 rpm due to the fuel cut
Items
(CONSULT-III screen terms) DTC*
1
SRT code Trip MIL
Reference
page
CONSULT-III
GST*
2ECM*3
CAN COMM CIRCUIT U1000 1000*5—1×EC-146
CAN COMM CIRCUIT U1001
1001*5—2
(Models with ASCD) —EC-1461 or 2
(Models with
ICC)
CONTROL UNIT(CAN) U1010 1010 — 1 ×EC-148
NO DTC IS DETECTED.
FURTHER TESTING
MAY BE REQUIRED. P0000 0000
——
Flashing*8—
INT/V TIM CONT-B1 P0011 0011 — 2 ×EC-149
INT/V TIM CONT-B2 P0021 0021 — 2 ×EC-149
A/F SEN1 HTR (B1) P0031 0031 — 2 ×EC-153
A/F SEN1 HTR (B1) P0032 0032 — 2 ×EC-153
HO2S2 HTR (B1) P0037 0037 — 2 ×EC-160
HO2S2 HTR (B1) P0038 0038 — 2 ×EC-160
A/F SEN1 HTR (B2) P0051 0051 — 2 ×EC-153
A/F SEN1 HTR (B2) P0052 0052 — 2 ×EC-153
HO2S2 HTR (B2) P0057 0057 — 2 ×EC-160
HO2S2 HTR (B2) P0058 0058 — 2 ×EC-160
INT/V TIM V/CIR-B1 P0075 0075 — 2 ×EC-168
INT/V TIM V/CIR-B2 P0081 0081 — 2 ×EC-168
MAF SEN/CIRCUIT-B1 P0101 0101 — 2 ×EC-175
MAF SEN/CIRCUIT-B1 P0102 0102 — 1 ×EC-182
MAF SEN/CIRCUIT-B1 P0103 0103 — 1 ×EC-182
IAT SEN/CIRCUIT-B1 P0112 0112 — 2 ×EC-189
IAT SEN/CIRCUIT-B1 P0113 0113 — 2 ×EC-189
ECT SEN/CIRC P0117 0117 — 1 ×EC-193
ECT SEN/CIRC P0118 0118 — 1 ×EC-193
TP SEN 2/CIRC-B1 P0122 0122 — 1 ×EC-198
TP SEN 2/CIRC-B1 P0123 0123 — 1 ×EC-198
ECT SENSOR P0125 0125 — 2 ×EC-204
IAT SENSOR-B1 P0127 0127 — 2 ×EC-207
THERMSTAT FNCTN P0128 0128 — 2 ×EC-210
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EC-56
< SERVICE INFORMATION >[VQ35DE]
ON BOARD DIAGNOSTIC (OBD) SYSTEM
A/F SENSOR1 (B1) P0130 0130 — 2
×EC-212
A/F SENSOR1 (B1) P0131 0131 — 2 ×EC-220
A/F SENSOR1 (B1) P0132 0132 — 2 ×EC-228
A/F SENSOR1 (B1) P0133 0133 ×2 ×EC-236
HO2S2 (B1) P0137 0137 ×2 ×EC-245
HO2S2 (B1) P0138 0138 ×2 ×EC-254
HO2S2 (B1) P0139 0139 ×2 ×EC-265
A/F SENSOR1 (B2) P0150 0150 — 2 ×EC-212
A/F SENSOR1 (B2) P0151 0151 — 2 ×EC-220
A/F SENSOR1 (B2) P0152 0152 — 2 ×EC-228
A/F SENSOR1 (B2) P0153 0153 ×2 ×EC-236
HO2S2 (B2) P0157 0157 ×2 ×EC-245
HO2S2 (B2) P0158 0158 ×2 ×EC-254
HO2S2 (B2) P0159 0159 ×2 ×EC-265
FUEL SYS-LEAN-B1 P0171 0171 — 2 ×EC-274
FUEL SYS-RICH-B1 P0172 0172 — 2 ×EC-284
FUEL SYS-LEAN-B2 P0174 0174 — 2 ×EC-274
FUEL SYS-RICH-B2 P0175 0175 — 2 ×EC-284
FTT SENSOR P0181 0181 — 2 ×EC-294
FTT SEN/CIRCUIT P0182 0182 — 2 ×EC-298
FTT SEN/CIRCUIT P0183 0183 — 2 ×EC-298
TP SEN 1/CIRC-B1 P0222 0222 — 1 ×EC-302
TP SEN 1/CIRC-B1 P0223 0223 — 1 ×EC-302
MULTI CYL MISFIRE P0300 0300 — 2 ×EC-308
CYL 1 MISFIRE P0301 0301 — 2 ×EC-308
CYL 2 MISFIRE P0302 0302 — 2 ×EC-308
CYL 3 MISFIRE P0303 0303 — 2 ×EC-308
CYL 4 MISFIRE P0304 0304 — 2 ×EC-308
CYL 5 MISFIRE P0305 0305 — 2 ×EC-308
CYL 6 MISFIRE P0306 0306 — 2 ×EC-308
KNOCK SEN/CIRC-B1 P0327 0327 — 2 — EC-315
KNOCK SEN/CIRC-B1 P0328 0328 — 2 —EC-315
CKP SEN/CIRCUIT P0335 0335 — 2×EC-319
CMP SEN/CIRC-B1 P0340 0340 — 2 ×EC-324
CMP SEN/CIRC-B2 P0345 0345 — 2 ×EC-324
TW CATALYST SYS-B1 P0420 0420 ×2 ×EC-332
TW CATALYST SYS-B2 P0430 0430 ×2 ×EC-332
EVAP PURG FLOW/MON P0441 0441 ×2 ×EC-336
EVAP SMALL LEAK P0442 0442 ×2 ×EC-341
PURG VOLUME CONT/V P0443 0443 — 2 ×EC-348
PURG VOLUME CONT/V P0444 0444 — 2 ×EC-355
PURG VOLUME CONT/V P0445 0445 — 2 ×EC-355
Items
(CONSULT-III screen terms) DTC*
1
SRT code Trip MIL
Reference
page
CONSULT-III
GST*
2ECM*3
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