2006 INFINITI FX35 heater

EC-8Revision: 2006 December 2006 FX35/FX45
PREPARATION ......................................................
.688
Special Service Tools .......................................... .688
Commercial Service Tools ................................... .689
ENGINE CONTROL SYSTEM ............................... .690
System Diagram .................................................. .690
Multiport Fuel Injection (MFI) System .................. .691
Electronic Ignition (EI) System ............................ .693
Fuel Cut Control (at No Load and High Engine
Speed) ................................................................. .694
AIR CONDITIONING CUT CONTROL ................... .695
Input/Output Signal Chart .................................... .695
System Description .............................................. .695
AUTOMATIC SPEED CONTROL DEVICE (ASCD) .696
System Description .............................................. .696
Component Description ....................................... .697
CAN COMMUNICATION ........................................ .698
System Description .............................................. .698
EVAPORATIVE EMISSION SYSTEM .................... .699
Description ........................................................... .699
Component Inspection ......................................... .702
Removal and Installation ..................................... .703
How to Detect Fuel Vapor Leakage ..................... .703
ON BOARD REFUELING VAPOR RECOVERY
(ORVR) ................................................................... .706
System Description .............................................. .706
Diagnostic Procedure .......................................... .707
Component Inspection ......................................... .709
POSITIVE CRANKCASE VENTILATION .............. .711
Description ........................................................... .711
Component Inspection ......................................... .711
IVIS (INFINITI VEHICLE IMMOBILIZER SYSTEM-
NATS) ..................................................................... .713
Description ........................................................... .713
ON BOARD DIAGNOSTIC (OBD) SYSTEM ......... .714
Introduction .......................................................... .714
Two Trip Detection Logic ..................................... .714
Emission-related Diagnostic Information ............. .715
Malfunction Indicator Lamp (MIL) ........................ .729
OBD System Operation Chart ............................. .731
BASIC SERVICE PROCEDURE ............................ .737
Basic Inspection .................................................. .737
Idle Speed and Ignition Timing Check ................. .742
VIN Registration .................................................. .743
Accelerator Pedal Released Position Learning ... .743
Throttle Valve Closed Position Learning .............. .744
Idle Air Volume Learning ..................................... .744
Fuel Pressure Check ........................................... .746
TROUBLE DIAGNOSIS ......................................... .748
Trouble Diagnosis Introduction ............................ .748
DTC Inspection Priority Chart .............................. .754
Fail-Safe Chart .................................................... .756
Symptom Matrix Chart ......................................... .757
Engine Control Component Parts Location ......... .761
Vacuum Hose Drawing ........................................ .768
Circuit Diagram .................................................... .769
ECM Harness Connector Terminal Layout .......... .771
ECM Terminals and Reference Value .................. .771
CONSULT-II Function (ENGINE) ......................... .780
Generic Scan Tool (GST) Function ...................... .792 CONSULT-II Reference Value in Data Monitor ....
.795
Major Sensor Reference Graph in Data Monitor
Mode .................................................................... .799
TROUBLE DIAGNOSIS - SPECIFICATION VALUE .801
Description ........................................................... .801
Testing Condition ................................................. .801
Inspection Procedure ........................................... .801
Diagnostic Procedure ........................................... .802
TROUBLE DIAGNOSIS FOR INTERMITTENT INCI-
DENT ...................................................................... .811
Description ........................................................... .811
Diagnostic Procedure ........................................... .811
POWER SUPPLY AND GROUND CIRCUIT .......... .812
Wiring Diagram .................................................... .812
Diagnostic Procedure ........................................... .813
Ground Inspection ................................................ .818
DTC U1000, U1001 CAN COMMUNICATION LINE .819
Description ........................................................... .819
On Board Diagnosis Logic ................................... .819
DTC Confirmation Procedure ............................... .819
Wiring Diagram .................................................... .820
Diagnostic Procedure ........................................... .821
DTC U1010 CAN COMMUNICATION .................... .822
Description ........................................................... .822
On Board Diagnosis Logic ................................... .822
DTC Confirmation Procedure ............................... .822
Diagnostic Procedure ........................................... .823
DTC P0011, P0021 IVT CONTROL ........................ .824
Description ........................................................... .824
CONSULT-II Reference Value in Data Monitor Mode .825
On Board Diagnosis Logic ................................... .825
DTC Confirmation Procedure ............................... .826
Wiring Diagram .................................................... .827
Diagnostic Procedure ........................................... .830
Component Inspection ......................................... .834
Removal and Installation ...................................... .835
DTC P0031, P0032, P0051, P0052 A/F SENSOR 1
HEATER .................................................................. .836
Description ........................................................... .836
CONSULT-II Reference Value in Data Monitor Mode .836
On Board Diagnosis Logic ................................... .836
DTC Confirmation Procedure ............................... .836
Wiring Diagram .................................................... .837
Diagnostic Procedure ........................................... .840
Component Inspection ......................................... .842
Removal and Installation ...................................... .842
DTC P0037, P0038, P0057, P0058 HO2S2 HEATER .843
Description ........................................................... .843
CONSULT-II Reference Value in Data Monitor Mode .843
On Board Diagnosis Logic ................................... .843
DTC Confirmation Procedure ............................... .844
Wiring Diagram .................................................... .845
Diagnostic Procedure ........................................... .848
Component Inspection ......................................... .850
Removal and Installation ...................................... .850
DTC P0075, P0081 IVT CONTROL SOLENOID

EC-14Revision: 2006 December 2006 FX35/FX45 CONSULT-II Reference Value in Data Monitor Mode
1295
Wiring Diagram .................................................... 1296
Diagnostic Procedure .......................................... 1297
Component Inspection ......................................... 1301
ASCD INDICATOR ................................................. 1302
Component Description ....................................... 1302
CONSULT-II Reference Value in Data Monitor Mode 1302
Wiring Diagram .................................................... 1303
Diagnostic Procedure .......................................... 1304
ELECTRICAL LOAD SIGNAL ............................... 1305
Description ........................................................... 1305
CONSULT-II Reference Value in Data Monitor Mode 1305
Diagnostic Procedure .......................................... 1305
FUEL INJECTOR ................................................... 1307
Component Description ....................................... 1307
CONSULT-II Reference Value in Data Monitor Mode 1307
Wiring Diagram .................................................... 1308
Diagnostic Procedure .......................................... 1309
Component Inspection ......................................... 1313
Removal and Installation ..................................... 1313
FUEL PUMP ........................................................... 1314
Description ........................................................... 1314
CONSULT-II Reference Value in Data Monitor Mode 1314
Wiring Diagram .................................................... 1315
Diagnostic Procedure .......................................... 1316
Component Inspection ......................................... 1319
Removal and Installation ..................................... 1319
ICC BRAKE SWITCH ............................................. 1320
Component Description ....................................... 1320
CONSULT-II Reference Value in Data Monitor Mode 1320
Wiring Diagram .................................................... 1321
Diagnostic Procedure .......................................... 1322
Component Inspection ......................................... 1327
IGNITION SIGNAL ................................................. 1328
Component Description ....................................... 1328
Wiring Diagram .................................................... 1329 Diagnostic Procedure ...........................................
1334
Component Inspection ......................................... 1339
Removal and Installation ...................................... 1340
REFRIGERANT PRESSURE SENSOR ................. 1341
Component Description ....................................... 1341
Wiring Diagram .................................................... 1342
Diagnostic Procedure ........................................... 1343
Removal and Installation ...................................... 1345
SNOW MODE SWITCH .......................................... 1346
Description ........................................................... 1346
CONSULT-II Reference Value in the Data Monitor
Mode .................................................................... 1346
Wiring Diagram .................................................... 1347
Diagnostic Procedure ........................................... 1348
Component Inspection ......................................... 1350
VARIABLE INDUCTION AIR CONTROL SYSTEM
(VIAS) ..................................................................... 1351
Description ........................................................... 1351
CONSULT-II Reference Value in Data Monitor Mode 1352
Wiring Diagram .................................................... 1353
Diagnostic Procedure ........................................... 1355
Component Inspection ......................................... 1358
Removal and Installation ...................................... 1359
MIL AND DATA LINK CONNECTOR ..................... 1360
Wiring Diagram .................................................... 1360
SERVICE DATA AND SPECIFICATIONS (SDS) ... 1362
Fuel Pressure ....................................................... 1362
Idle Speed and Ignition Timing ............................. 1362
Calculated Load Value ......................................... 1362
Mass Air Flow Sensor .......................................... 1362
Intake Air Temperature Sensor ............................ 1362
Engine Coolant Temperature Sensor ................... 1362
Fuel Tank Temperature Sensor ............................ 1362
Crankshaft Position Sensor (POS) ...................... 1362
Camshaft Position Sensor (PHASE) .................... 1362
A/F Sensor 1 Heater ............................................ 1362
Heated Oxygen sensor 2 Heater ......................... 1363
Throttle Control Motor .......................................... 1363
Fuel Injector ......................................................... 1363
Fuel Pump ............................................................ 1363

EC-66
[VQ35DE]
ON BOARD DIAGNOSTIC (OBD) SYSTEM
Revision: 2006 December 2006 FX35/FX45
Item Self-diagnostic test item DTC Test value
(GST display) Test limit Conversion
TID CID
CATALYST Three way catalyst function (Bank 1)
P0420 01H 01H Max. 1/128
P0420 02H 81H Min. 1
Three way catalyst function (Bank 2) P0430 03H 02H Max. 1/128
P0430 04H 82H Min. 1
EVAP SYSTEM EVAP control system (Small leak) P0442 05H 03H Max.
1/128mm
2
EVAP control system purge flow monitoring P0441 06H 83H Min. 20mV
EVAP control system (Very small leak) P0456 07H 03H Max. 1/128mm
2
HO2S Air fuel ratio (A/F) sensor 1 (Bank 1)
P0131 41H 8EH Min. 5 mV
P0132 42H 0EH Max. 5 mV
P2A00 43H 0EH Max. 0.002
P2A00 44H 8EH Min. 0.002 P0133 45H 8EH Min. 0.004
P0130 46H 0EH Max. 5 mV
P0130 47H 8EH Min. 5 mV
P0133 48H 8EH Min. 0.004
Air fuel ratio (A/F) sensor 1 (Bank 2) P0151 4CH 8FH Min. 5 mV
P0152 4DH 0FH Max. 5 mV
P2A03 4EH 0FH Max. 0.002
P2A03 4FH 8FH Min. 0.002 P0153 50H 8FH Min. 0.004
P0150 51H 0FH Max. 5 mV
P0150 52H 8FH Min. 5 mV
P0153 53H 8FH Min. 0.004
Heated oxygen sensor 2 (Bank 1) P0139 19H 86H Min. 10mV/500ms
P0137 1AH 86H Min. 10mV
P0138 1BH 06H Max. 10mV
P0138 1CH 06H Max. 10mV
Heated oxygen sensor 2 (Bank 2) P0159 21H 87H Min. 10mV/500ms
P0157 22H 87H Min. 10mV
P0158 23H 07H Max. 10mV
P0158 24H 07H Max. 10mV
HO2S HEATER Air fuel ratio (A/F) sensor 1 heater (Bank 1)
P0032 57H 10H Max. 5 mV
P0031 58H 90H Min. 5 mV
Air fuel ratio (A/F) sensor 1 heater (Bank 2) P0052 59H 11H Max. 5 mV
P0051 5AH 91H Min. 5 mV
Heated oxygen sensor 2 heater (Bank 1) P0038 2DH 0AH Max. 20mV
P0037 2EH 8AH Min. 20mV
Heated oxygen sensor 2 heater (Bank 2) P0058 2FH 0BH Max. 20mV
P0057 30H 8BH Min. 20mV

TROUBLE DIAGNOSIS EC-95
[VQ35DE]
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Revision: 2006 December 2006 FX35/FX45
*: Models with ICC. 2

P0031 P0032 P0051 P0052 Air fuel ratio (A/F) sensor 1 heater

P0037 P0038 P0057 P0058 Heated oxygen sensor 2 heater

P0075 P0081 Intake valve timing control solenoid valve

P0130 P0131 P0132 P0133 P0150 P0151 P0152 P0153 P2A00 P2A03 Air fuel ratio (A/F) sensor 1

P0137 P0138 P0139 P0157 P0158 P0159 Heated oxygen sensor 2

P0441 EVAP control system purge flow monitoring

P0443 P0444 P0445 EVAP canister purge volume control solenoid valve

P0447 P0448 EVAP canister vent control valve

P0451 P0452 P0453 EVAP control system pressure sensor

P0550 Power steering pressure sensor

P0603 ECM power supply

P0710 P0717 P0720 P0740 P0744 P0745 P1730 P1752 P1754 P1757 P1759 P1762 P1764 P1767 P1769 P1772
P1774 A/T related sensors, solenoid valves and switches

P1217 Engine over temperature (OVERHEAT)

P1805 Brake switch

P2100 P2103 P2118 Electric throttle control actuator

P2101 Electric throttle control function
3

P0011 P0021 Intake valve timing control

P0171 P0172 P0174 P0175 Fuel injection system function

P0300 - P0306 Misfire

P0420 P0430 Three way catalyst function

P0442 EVAP control system (SMALL LEAK)

P0455 EVAP control system (GROSS LEAK)

P0456 EVAP control system (VERY SMALL LEAK)

P0506 P0507 Idle speed control system

P1148 P1168 Closed loop control

P1211 TCS control unit

P1212 TCS communication line

P1564 ICC steering switch/ASCD steering switch

P1568 ICC command valve*

P1572 ICC brake switch/ASCD brake switch

P1574 ICC vehicle speed sensor/ASCD vehicle speed sensor

P1715 Turbine revolution sensor

P2119 Electric throttle control actuator
Priority Detected items (DTC)

EC-110
[VQ35DE]
TROUBLE DIAGNOSIS
Revision: 2006 December 2006 FX35/FX45
ECM Harness Connector Terminal LayoutNBS003M4
ECM Terminals and Reference ValueNBS003M5
PREPARATION
1. ECM is located behind the passenger side instrument lower panel. For this inspection, remove passenger side instrument
lower panel.
2. Remove ECM harness connector.
3. When disconnecting ECM harness connector, loosen it with levers as far as they will go as shown in the figure.
4. Connect a break-out box (SST) and Y-cable adapter (SST) between the ECM and ECM harness connector.

Use extreme care not to touch 2 pins at one time.

Data is for comparison and may not be exact.
ECM INSPECTION TABLE
Specification data are reference values and are measured between each terminal and ground.
Pulse signal is measured by CONSULT-II.
CAUTION:
Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam-
age to the ECMs transistor. Use a ground other than ECM terminals, such as the ground.
PBIB1192E
PBIB1578E
PBIB1512E
TER-
MINAL
NO. WIRE
COLOR ITEM CONDITION DATA (DC Voltage)
1 B ECM ground [Engine is running]

Idle speedBody ground
2R/L A/F sensor 1 heater
(bank 1) [Engine is running]

Warm-up condition

Idle speed Approximately 5V
PBIB1584E

TROUBLE DIAGNOSIS EC-111
[VQ35DE]
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Revision: 2006 December 2006 FX35/FX453R Throttle control motor relay
power supply [Ignition switch: ON] BATTERY VOLTAGE
(11 - 14V)
4L/W Throttle control motor
(Close) [Ignition switch: ON]

Engine stopped

Selector lever: D

Accelerator pedal: Fully released 0 - 14V
5L/B Throttle control motor
(Open) [Ignition switch: ON]

Engine stopped

Selector lever: D

Accelerator pedal: Fully depressed 0 - 14V
6R Heated oxygen sensor 2
heater (bank 2) [Engine is running]

Engine speed: Below 3,600 rpm after the
following conditions are met
–Engine: After warming up
–Keeping the engine speed between 3,500
and 4,000 rpm for 1 minute and at idle for 1
minute under no load 0 - 1.0V
[Ignition switch: ON]

Engine stopped
[Engine is running]

Engine speed: Above 3,600 rpm BATTERY VOLTAGE
(11 - 14V)
10 OR Intake valve timing control
solenoid valve (bank 2) [Engine is running]

Warm-up condition

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

Warm-up condition

When revving engine up to 2,500 rpm
quickly 7 - 12V
11 B R Intake valve timing control
solenoid valve (bank 1) [Engine is running]

Warm-up condition

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

Warm-up condition

When revving engine up to 2,500 rpm
quickly 7 - 12V
TER-
MINAL NO. WIRE
COLOR ITEM CONDITION DATA (DC Voltage)
PBIB1104E
PBIB1105E
PBIB1790E
PBIB1790E

TROUBLE DIAGNOSIS EC-113
[VQ35DE]
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Revision: 2006 December 2006 FX35/FX45
21
22
23 W
G
R Fuel injector No. 5
Fuel injector No. 3
Fuel injector No. 1 [Engine is running]

Warm-up condition

Idle speed
NOTE:
The pulse cycle changes depending on rpm
at idle BATTERY VOLTAGE
(11 - 14V)
[Engine is running]

Warm-up condition

Engine speed: 2,000 rpm BATTERY VOLTAGE
(11 - 14V)
24 L A/F sensor 1 heater
(Bank 2) [Engine is running]

Warm-up condition

Idle speed Approximately 5V
25 P Heated oxygen sensor 2
heater (bank 1) [Engine is running]

Engine speed: Below 3,600 rpm after the
following conditions are met
–Engine: After warming up
–Keeping the engine speed between 3,500
and 4,000 rpm for 1 minute and at idle for 1
minute under no load 0 - 1.0V
[Ignition switch: ON]

Engine stopped
[Engine is running]

Engine speed: Above 3,600 rpm BATTERY VOLTAGE
(11 - 14V)
32 OR EVAP control system pres-
sure sensor [Ignition switch: ON]
Approximately 1.8 - 4.8V
TER-
MINAL NO. WIRE
COLOR ITEM CONDITION DATA (DC Voltage)
SEC984C
SEC985C
PBIB1584E

TROUBLE DIAGNOSIS EC-121
[VQ35DE]
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Revision: 2006 December 2006 FX35/FX45
X: Applicable
*1: This item includes 1st trip DTCs.
*2: This mode includes 1st trip freeze frame data or freeze frame data. The items appear on CONSULT-II screen in freeze frame d ata
mode only if a 1st trip DTC or DTC is detected. For details, refer to EC-122, "
Freeze Frame Data and 1st Trip Freeze Frame Data" .
*3: Always “CMPLT” is displayed.
INSPECTION PROCEDURE
Refer to GI-38, "CONSULT-II Start Procedure"
WORK SUPPORT MODE
Work Item
ENGINE CONTROL COMPONENT PARTS
OUTPUT
Fuel injector ×× ×
Power transistor (Ignition timing) ×× ×
Throttle control motor relay ×××
Throttle control motor ×
EVAP canister purge volume con-
trol solenoid valve ×××××
Air conditioner relay ××
Fuel pump relay ××××
Cooling fan relay ××××
Air fuel ratio (A/F) sensor 1 heater ×××
× *
3
Heated oxygen sensor 2 heater ×××
× *3
EVAP canister vent control valve ×× ×××
Intake valve timing control solenoid
valve ××××
Calculated load value ×××
Item
DIAGNOSTIC TEST MODE
WORK SUP-
PORT SELF-DIAGNOSTIC
RESULTS DATA
MONI-
TOR DATA
MONI- TOR
(SPEC) ACTIVE
TEST DTC & SRT
CONFIRMATION
DTC*
1FREEZE
FRAME
DATA*
1
SRT
STATUS DTC
WORK SUP-
PORT
WORK ITEM CONDITION USAGE
FUEL PRESSURE RELEASE

FUEL PUMP WILL STOP BY TOUCHING “START” DUR-
ING IDLING.
CRANK A FEW TIMES AFTER ENGINE STALLS. When releasing fuel pressure
from fuel line
IDLE AIR VOL LEARN

THE IDLE AIR VOLUME THAT KEEPS THE ENGINE
WITHIN THE SPECIFIED RANGE IS MEMORIZED IN
ECM. When learning the idle air volume
SELF-LEARNING CONT

THE COEFFICIENT OF SELF-LEARNING CONTROL
MIXTURE RATIO RETURNS TO THE ORIGINAL COEF-
FICIENT. When clearing the coefficient of
self-learning control value