2004 INFINITI FX35 Refrigerant

ATC-160
REFRIGERANT LINES
Revision: 2004 November 2004 FX35/FX45
Refrigerant leaks should be checked immediately after stopping
the engine. Begin with the leak detector at the compressor. The
pressure on the high pressure side will gradually drop after
refrigerant circulation stops and pressure on the low pressure
side will gradually rise, as shown in the graph. Some leaks are
more easily detected when pressure is high.
11. Before connecting recovery/recycling recharging equipment to vehicle, check recovery/recycling recharg-
ing equipment gauges. No refrigerant pressure should be displayed. If pressure is displayed, recover
refrigerant from equipment lines and then check refrigerant purity.
12. Confirm refrigerant purity in supply tank using recovery/recycling recharging equipment and refrigerant
identifier.
13. Confirm refrigerant purity in vehicle A/C system using recovery/recycling recharging equipment and refrig-
erant identifier.
14. Discharge A/C system using approved refrigerant recovery equipment. Repair the leaking fitting or com-
ponent as necessary.
15. Evacuate and recharge A/C system and perform the leak test to confirm no refrigerant leaks.
16. Perform A/C performance test to ensure system works properly.
SHA839E

SERVICE DATA AND SPECIFICATIONS (SDS)
ATC-161
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Revision: 2004 November 2004 FX35/FX45
SERVICE DATA AND SPECIFICATIONS (SDS)PFP:00030
CompressorAJS00167
LubricantAJS00168
RefrigerantAJS00169
Engine Idling SpeedAJS0016A
Refer to EC-37, "Idle Speed and Ignition Timing Check" (VQ35DE) or EC-685, "Idle Speed and Ignition Tim-
ing Check" (VK45DE).
Belt TensionAJS0016B
Refer to EM-15, "DRIVE BELTS" (VQ35DE) or EM-169, "DRIVE BELTS" (VK45DE).
ModelCalsonic Kansei make CWV-618
TypeV-6 variable displacement
Displacement
cm
3 (cu in)/revMax. 184 (11.228)
Min. 14.5 (0.885)
Cylinder bore × stroke
mm (in)37 (1.46) × [2.3 - 28.6 (0.091 - 1.126)]
Direction of rotationClockwise (viewed from drive end)
Drive beltPoly V
ModelCalsonic Kansei make CWV-618
NameNissan A/C System Oil Type S (DH-PS)
Part numberKLH00-PAGS0
Capacity
m (US fl oz, lmp fl oz)Total in system 180 (6.0, 6.3)
Compressor (Service part) charg-
ing amount180 (6.0, 6.3)
Ty p eHFC-134a (R-134a)
Capacity
kg (lb)0.55 (1.21)

EC-7
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Revision: 2004 November 2004 FX35/FX45Component Inspection ......................................... 575
Removal and Installation ...................................... 575
DTC P2138 APP SENSOR ..................................... 576
Component Description ........................................ 576
CONSULT-II Reference Value in Data Monitor Mode
. 576
On Board Diagnosis Logic ................................... 576
DTC Confirmation Procedure ............................... 577
Wiring Diagram .................................................... 578
Diagnostic Procedure ........................................... 579
Component Inspection ......................................... 584
Removal and Installation ...................................... 584
IGNITION SIGNAL .................................................. 585
Component Description ........................................ 585
Wiring Diagram .................................................... 586
Diagnostic Procedure ........................................... 591
Component Inspection ......................................... 595
Removal and Installation ...................................... 596
INJECTOR CIRCUIT ............................................... 597
Component Description ........................................ 597
CONSULT-II Reference Value in Data Monitor Mode
. 597
Wiring Diagram .................................................... 598
Diagnostic Procedure ........................................... 599
Component Inspection ......................................... 602
Removal and Installation ...................................... 602
FUEL PUMP CIRCUIT ............................................ 603
Description ........................................................... 603
CONSULT-II Reference Value in Data Monitor Mode
. 603
Wiring Diagram .................................................... 604
Diagnostic Procedure ........................................... 605
Component Inspection ......................................... 608
Removal and Installation ...................................... 608
REFRIGERANT PRESSURE SENSOR ................. 609
Component Description ........................................ 609
Wiring Diagram .................................................... 610
Diagnostic Procedure ............................................ 611
Removal and Installation ...................................... 613
ELECTRICAL LOAD SIGNAL ................................ 614
Description ........................................................... 614
CONSULT-II Reference Value in Data Monitor Mode
. 614
Diagnostic Procedure ........................................... 614
ICC BRAKE SWITCH ............................................. 615
Component Description ........................................ 615
CONSULT-II Reference Value in Data Monitor Mode
. 615
Wiring Diagram .................................................... 616
Diagnostic Procedure ........................................... 617
Component Inspection ......................................... 622
ASCD BRAKE SWITCH ......................................... 624
Component Description ........................................ 624
CONSULT-II Reference Value in Data Monitor Mode
. 624
Wiring Diagram .................................................... 625
Diagnostic Procedure ........................................... 626
Component Inspection ......................................... 631ASCD INDICATOR ..................................................632
Component Description ........................................632
CONSULT-II Reference Value in Data Monitor Mode
.632
Wiring Diagram .....................................................633
Diagnostic Procedure ...........................................634
SNOW MODE SWITCH ..........................................635
Description ............................................................635
CONSULT-II Reference Value in the Data Monitor
Mode .....................................................................635
Wiring Diagram .....................................................636
Diagnostic Procedure ...........................................637
Component Inspection ..........................................640
MIL AND DATA LINK CONNECTOR ......................641
Wiring Diagram .....................................................641
EVAPORATIVE EMISSION SYSTEM .....................643
Description ............................................................643
Component Inspection ..........................................646
Removal and Installation ......................................647
How to Detect Fuel Vapor Leakage ......................647
ON BOARD REFUELING VAPOR RECOVERY
(ORVR) ....................................................................650
System Description ...............................................650
Diagnostic Procedure ...........................................651
Component Inspection ..........................................653
POSITIVE CRANKCASE VENTILATION ...............655
Description ............................................................655
Component Inspection ..........................................655
AUTOMATIC SPEED CONTROL DEVICE (ASCD) .657
System Description ...............................................657
Component Description ........................................659
SERVICE DATA AND SPECIFICATIONS (SDS) ....660
Fuel Pressure .......................................................660
Idle Speed and Ignition Timing .............................660
Calculated Load Value ..........................................660
Mass Air Flow Sensor ...........................................660
Intake Air Temperature Sensor .............................660
Engine Coolant Temperature Sensor ...................660
Heated Oxygen Sensor 1 Heater .........................660
Heated Oxygen sensor 2 Heater ..........................660
Crankshaft Position Sensor (POS) .......................660
Camshaft Position Sensor (PHASE) ....................660
Throttle Control Motor ...........................................660
Injector ..................................................................661
Fuel Pump ............................................................661
VK45DE
INDEX FOR DTC .....................................................662
Alphabetical Index ................................................662
DTC No. Index ......................................................665
PRECAUTIONS ......................................................670
Precautions for Supplemental Restraint System
(SRS) “AIR BAG” and “SEAT BELT PRE-TEN-
SIONER” ...............................................................670
On Board Diagnostic (OBD) System of Engine and
A/T ........................................................................670
Precaution ............................................................670
Wiring Diagrams and Trouble Diagnosis ..............673

EC-14Revision: 2004 November 2004 FX35/FX45CONSULT-II Reference Value in Data Monitor Mode
1255
Wiring Diagram ....................................................1256
Diagnostic Procedure ..........................................1257
Component Inspection .........................................1260
Removal and Installation .....................................1261
IGNITION SIGNAL .................................................1262
Component Description .......................................1262
Wiring Diagram ....................................................1263
Diagnostic Procedure ..........................................1268
Component Inspection .........................................1272
Removal and Installation .....................................1273
INJECTOR CIRCUIT ..............................................1274
Component Description .......................................1274
CONSULT-II Reference Value in Data Monitor Mode
1274
Wiring Diagram ....................................................1275
Diagnostic Procedure ..........................................1276
Component Inspection .........................................1279
Removal and Installation .....................................1279
FUEL PUMP CIRCUIT ...........................................1280
Description ...........................................................1280
CONSULT-II Reference Value in Data Monitor Mode
1280
Wiring Diagram ....................................................1281
Diagnostic Procedure ..........................................1282
Component Inspection .........................................1285
Removal and Installation .....................................1286
REFRIGERANT PRESSURE SENSOR .................1287
Component Description .......................................1287
Wiring Diagram ....................................................1288
Diagnostic Procedure ..........................................1289
Removal and Installation .....................................1291
ELECTRICAL LOAD SIGNAL ...............................1292
Description ...........................................................1292
CONSULT-II Reference Value in Data Monitor Mode
1292
Diagnostic Procedure ..........................................1292
ICC BRAKE SWITCH .............................................1293
Component Description .......................................1293
CONSULT-II Reference Value in Data Monitor Mode
1293
Wiring Diagram ....................................................1294
Diagnostic Procedure ..........................................1295
Component Inspection .........................................1301
ASCD BRAKE SWITCH .........................................1302
Component Description .......................................1302
CONSULT-II Reference Value in Data Monitor Mode
1302Wiring Diagram ....................................................1303
Diagnostic Procedure ...........................................1304
Component Inspection .........................................1308
ASCD INDICATOR .................................................1309
Component Description .......................................1309
CONSULT-II Reference Value in Data Monitor Mode
1309
Wiring Diagram ....................................................1310
Diagnostic Procedure ...........................................1311
SNOW MODE SWITCH ..........................................1312
Description ...........................................................1312
CONSULT-II Reference Value in the Data Monitor
Mode ....................................................................1312
Wiring Diagram ....................................................1313
Diagnostic Procedure ...........................................1314
Component Inspection .........................................1317
MIL AND DATA LINK CONNECTOR .....................1318
Wiring Diagram ....................................................1318
EVAPORATIVE EMISSION SYSTEM ....................1320
Description ...........................................................1320
Component Inspection .........................................1323
Removal and Installation ......................................1324
How to Detect Fuel Vapor Leakage .....................1324
ON BOARD REFUELING VAPOR RECOVERY
(ORVR) ...................................................................1327
System Description ..............................................1327
Diagnostic Procedure ...........................................1328
Component Inspection .........................................1330
POSITIVE CRANKCASE VENTILATION ...............1332
Description ...........................................................1332
Component Inspection .........................................1332
AUTOMATIC SPEED CONTROL DEVICE (ASCD) 1334
System Description ..............................................1334
Component Description .......................................1335
SERVICE DATA AND SPECIFICATIONS (SDS) ...1336
Fuel Pressure .......................................................1336
Idle Speed and Ignition Timing .............................1336
Calculated Load Value .........................................1336
Mass Air Flow Sensor ..........................................1336
Intake Air Temperature Sensor ............................1336
Engine Coolant Temperature Sensor ...................1336
Heated Oxygen Sensor 1 Heater .........................1336
Heated Oxygen Sensor 2 Heater .........................1336
Crankshaft Position Sensor (POS) ......................1336
Camshaft Position Sensor (PHASE) ....................1336
Throttle Control Motor ..........................................1336
Injector .................................................................1337
Fuel Pump ............................................................1337

ENGINE CONTROL SYSTEM
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Revision: 2004 November 2004 FX35/FX45
System ChartABS006K6
*1: This sensor is not used to control the engine system. This is used only for the on board diagnosis.
*2: This sensor is not used to control the engine system under normal conditions.
*3: This input signal is sent to the ECM through CAN communication line.
*4: This output signal is sent from the ECM through CAN communication line.Input (Sensor) ECM Function Output (Actuator)

Camshaft position sensor (PHASE)

Crankshaft position sensor (POS)

Mass air flow sensor

Engine coolant temperature sensor

Heated oxygen sensor 1

Throttle position sensor

Accelerator pedal position sensor

Park/neutral position (PNP) switch

Intake air temperature sensor

Power steering pressure sensor

Ignition switch

Battery voltage

Knock sensor

Refrigerant pressure sensor

Stop lamp switch

ICC steering switch

ICC brake switch

ASCD steering switch

ASCD brake switch

Fuel level sensor*1 *3

EVAP control system pressure sensor

Fuel tank temperature sensor*1

Heated oxygen sensor 2*2

TCM (Transmission control module)*3

ABS actuator and electric unit (control unit)*3

ICC unit*3

Air conditioner switch*3

Wheel sensor*3

Electrical load signal*3
Fuel injection & mixture ratio control Fuel injector
Electronic ignition system Power transistor
Fuel pump control Fuel pump relay
ICC vehicle speed control Electric throttle control actuator
ASCD vehicle speed control Electric throttle control actuator
On board diagnostic system
MIL (On the instrument panel)*
4
Heated oxygen sensor 1 heater control Heated oxygen sensor 1 heater
Heated oxygen sensor 2 heater control Heated oxygen sensor 2 heater
EVAP canister purge flow controlEVAP canister purge volume control
solenoid valve
Air conditioning cut control
Air conditioner relay*
4
Cooling fan control
Cooling fan relay*4
ON BOARD DIAGNOSIS for EVAP system EVAP canister vent control valve

ENGINE CONTROL SYSTEM
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Revision: 2004 November 2004 FX35/FX45

At idle

At low battery voltage

During acceleration
The knock sensor retard system is designed only for emergencies. The basic ignition timing is programmed
within the anti-knocking zone, if recommended fuel is used under dry conditions. The retard system does not
operate under normal driving conditions. If engine knocking occurs, the knock sensor monitors the condition.
The signal is transmitted to the ECM. The ECM retards the ignition timing to eliminate the knocking condition.
Air Conditioning Cut ControlABS006K9
INPUT/OUTPUT SIGNAL CHART
*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 DESCRIPTION
This system improves engine operation 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.
Fuel Cut Control (at No Load and High Engine Speed)ABS006KA
INPUT/OUTPUT SIGNAL CHART
*1: This signal is sent to the ECM through CAN communication line.
SYSTEM DESCRIPTION
If the engine speed is above 1,800 rpm under no load (for example, the shift position is neutral and engine
speed is over 1,800 rpm) fuel will be cut off after some time. The exact time when the fuel is cut off varies
based on engine speed.
Fuel cut will be operated until the engine speed reaches 1,500 rpm, then fuel cut will be cancelled.
Sensor Input Signal to ECM ECM function Actuator
Air conditioner switch*
1Air conditioner ON signal
Air conditioner
cut controlAir conditioner relay Throttle position sensor Throttle position
Accelerator pedal position sensor Accelerator pedal 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 sensor*
1Vehicle speed
Sensor Input Signal to ECM ECM function Actuator
Park/neutral position (PNP) switch Neutral position
Fuel cut con-
trolFuel injector Accelerator pedal position sensor Accelerator pedal position
Engine coolant temperature sensor Engine coolant temperature
Crankshaft position sensor (POS)
Camshaft position sensor (PHASE)Engine speed
Wheel sensor*
1Vehicle speed

TROUBLE DIAGNOSIS
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Revision: 2004 November 2004 FX35/FX45
1 - 6: The numbers refer to the order of inspection.
(continued on next page)
SYSTEM — ENGINE MECHANICAL & OTHER
ECM 22333333333EC-401,
EC-404
Intake valve timing control solenoid valve cir-
cuit32 13223 3EC-408
PNP switch circuit 3 3 3 3 3EC-545
Refrigerant pressure sensor circuit 2 3 3 4EC-609
Electrical load signal circuit 3EC-614
Air conditioner circuit223333333 3 2AT C - 4 0
ABS actuator and electric unit (control unit) 4BRC-12
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
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 tank
5
5FL-10
Fuel piping 5 5 5 5 5 5EM-45
Vapor lock—
Valve deposit
5 555 55 5—
Poor fuel (Heavy weight gaso-
line, Low octane)—

TROUBLE DIAGNOSIS
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Revision: 2004 November 2004 FX35/FX45
45 GYEVAP canister purge vol-
ume control solenoid valve[Engine is running]

Idle speedBATTERY VOLTAGE
(11 - 14V)
[Engine is running]

Engine speed is about 2,000 rpm (More
than 100 seconds after starting engine)BATTERY VOLTAGE
(11 - 14V)
47 LSensor power supply
(Throttle position sensor)[Ignition switch: ON]Approximately 5V
48 LGSensor power supply
(EVAP control system pres-
sure sensor)[Ignition switch: ON]Approximately 5V
49 PUSensor power supply
(Refrigerant pressure sen-
sor)[Ignition switch: ON]Approximately 5V
50 W Throttle position sensor 1[Ignition switch: ON]

Engine stopped

Shift lever: D

Accelerator pedal: Fully releasedMore than 0.36V
[Ignition switch: ON]

Engine stopped

Shift lever: D

Accelerator pedal: Fully depressedLess than 4.75V
51 L/W Mass air flow sensor[Engine is running]

Warm-up condition

Idle speed0.9 - 1.2V
[Engine is running]

Warm-up condition

Engine speed is 2,500 rpm1.6 - 1.9V
55 W/RHeated oxygen sensor 2
(bank 2)[Engine is running]

Warm-up condition

Revving engine from idle to 3,000 rpm
quickly after the following conditions are met
–After keeping the engine speed between
3,500 and 4,000 rpm for 1 minute and at idle
for 1 minute under no load0 - Approximately 1.0V TER-
MINAL
NO.WIRE
COLORITEM CONDITION DATA (DC Voltage)
SEC990C
SEC991C