fuel INFINITI FX35 2005 Service Manual

EC-670
[VQ35DE]
FUEL PUMP CIRCUIT
Revision: 2005 July 2005 FX
Specification data are reference values and are measured between each terminal and ground.
CAUTION:
Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam-
age to the ECM's transistor. Use a ground other than ECM terminals, such as the ground.
Diagnostic ProcedureABS006YI
1. CHECK OVERALL FUNCTION
1. Turn ignition switch ON.
2. Pinch fuel feed hose with two fingers. Fuel pressure pulsation should be felt on the fuel feed hose
for 1 second after ignition switch is turned ON.
OK or NG
OK >> INSPECTION END
NG >> GO TO 2.
2. CHECK FUEL PUMP POWER SUPPLY CIRCUIT-I
1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Turn ignition switch ON.
4. Check voltage between ECM terminal 113 and ground with CONSULT-II or tester.
OK or NG
OK >> GO TO 5.
NG >> GO TO 3.
3. CHECK FUEL PUMP POWER SUPPLY CIRCUIT-II
Check voltage between IPDM E/R terminal 40 and ground with CONSULT-II or tester.
OK or NG
OK >> GO TO 4.
NG >> GO TO 11.
TER-
MINAL NO. WIRE
COLOR ITEM CONDITION DATA (DC Voltage)
11 3 G Y / R F u e l p u m p r e l a y [Ignition switch: ON]

For 1 second after turning ignition switch ON
[Engine is running] 0 - 1.5V
[Ignition switch: ON]

More than 1 second after turning ignition
switch ON BATTERY VOLTAGE
(11 - 14V)
PBIB1612E
Voltage: Battery voltage
PBIB1187E
Voltage: Battery voltage

FUEL PUMP CIRCUIT EC-671
[VQ35DE]
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4. DETECT MALFUNCTIONING PART
Check the following.

Harness connectors E211, M41

Harness for open or short between IPDM E/R and ECM
>> Repair open circuit or short to ground or short to power in harness or connectors.
5. CHECK FUEL PUMP POWER SUPPLY CIRCUIT-III
1. Turn ignition switch OFF.
2. Reconnect all harness connectors disconnected.
3. Disconnect “fuel level sensor unit and fuel pump” harness con- nector.
4. Turn ignition switch ON.
5. Check voltage between “fuel level sensor unit and fuel pump” terminal 1 and ground with CONSULT-II or tester.
OK or NG
OK >> GO TO 9.
NG >> GO TO 6.
6. CHECK 15A FUSE
1. Turn ignition switch OFF.
2. Disconnect 15A fuse.
3. Check 15A fuse.
OK or NG
OK >> GO TO 7.
NG >> Replace fuse.
PBIB1572E
Voltage: Battery voltage should exist for 1 sec-
ond after ignition switch is turned ON.
PBIB0795E

EC-672
[VQ35DE]
FUEL PUMP CIRCUIT
Revision: 2005 July 2005 FX
7. CHECK FUEL PUMP POWER SUPPLY CIRCUIT-IV
1. Disconnect IPDM E/R harness connector E8.
2. Check harness continuity between IPDM E/R terminal 39 and “fuel level sensor unit and fuel pump” termi- nal 1.
Refer to Wiring Diagram.
3. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 11.
NG >> GO TO 8.
8. DETECT MALFUNCTIONING PART
Check the following.

Harness connectors E206, B6

Harness for open or short between IPDM E/R and “fuel level sensor unit and fuel pump”
>> Repair open circuit or short to ground or short to power in harness or connectors.
9. CHECK FUEL PUMP GROUND CIRCUIT FOR OPEN AND SHORT
1. Check harness continuity between “fuel level sensor unit and fuel pump” terminal 3 and ground. Refer to Wiring Diagram.
2. Also check harness for short to power.
OK or NG
OK >> GO TO 10.
NG >> Repair open circuit or short to power in harness or connectors.
10. CHECK FUEL PUMP
Refer to EC-1363, "
Component Inspection" .
OK or NG
OK >> GO TO 11.
NG >> Replace fuel pump.
11 . CHECK INTERMITTENT INCIDENT
Refer to EC-854, "
TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .
OK or NG
OK >> Replace IPDM E/R.
NG >> Repair or replace harness or connectors.
Component InspectionABS006YJ
FUEL PUMP
1. Disconnect “fuel level sensor unit and fuel pump” harness connector. Continuity should exist.
Continuity should exist.

FUEL PUMP CIRCUIT EC-673
[VQ35DE]
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2. Check resistance between “fuel level sensor unit and fuel pump”
terminals 1 and 3.
Removal and InstallationABS006YK
FUEL PUMP
Refer to FL-4, "FUEL LEVEL SENSOR UNIT, FUEL FILTER AND FUEL PUMP ASSEMBLY" .
Resistance: Approximately 0.2 - 5.0
Ω [at 25 °C
(77 °F)]
SEC918C

SERVICE DATA AND SPECIFICATIONS (SDS) EC-705
[VQ35DE]
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SERVICE DATA AND SPECIFICATIONS (SDS)PFP:00030
Fuel PressureABS006ZI
Idle Speed and Ignition TimingABS006ZJ
*1: Under the following conditions:

Air conditioner switch: OFF

Electric load: OFF (Lights, heater fan & rear window defogger)

Steering wheel: Kept in straight-ahead position
Calculated Load ValueABS006ZK
Mass Air Flow SensorABS006ZL
*: Engine is warmed up to normal operating temperature and running under no-load.
Intake Air Temperature SensorABS006ZM
Engine Coolant Temperature SensorABS006ZN
Air Fuel Ratio (A/F) Sensor 1 HeaterABS006ZO
Heated Oxygen sensor 2 HeaterABS006ZP
Crankshaft Position Sensor (POS)ABS006ZQ
Refer to EC-306, "Component Inspection" .
Camshaft Position Sensor (PHASE)ABS006ZR
Refer to EC-315, "Component Inspection" .
Throttle Control MotorABS006ZS
Fuel pressure at idling kPa (kg/cm2 , psi) Approximately 350 (3.57, 51)
Target idle speed
No-load*1 (in P or N position) 650
±50 rpm
Air conditioner: ON In P or N position 700 rpm or more
Ignition timing In P or N position 15 ° ± 5 ° BTDC
Calculated load value% (Using CONSULT-II or GST)
At idle 5 - 35
At 2,500 rpm 5 - 35
Supply voltageBattery voltage (11 - 14V)
Output voltage at idle 1.0 - 1.2*V
Mass air flow (Using CONSULT-II or GST) 2.0 - 6.0 g·m/sec at idle*
7.0 - 20.0 g·m/sec at 2,500 rpm*
Temperature °C ( °F) Resistance k Ω
25 (77) 1.94 - 2.06
80 (176) 0.295 - 0.349
Temperature °C ( °F) Resistance k Ω
20 (68) 2.1 - 2.9
50 (122) 0.68 - 1.00
90 (194) 0.236 - 0.260
Resistance [at 25°C (77 °F)] 2.3 - 4.3 Ω
Resistance [at 25°C (77 °F)] 5.0 - 7.0 Ω
Resistance [at 25°C (77 °F)] Approximately 1 - 15 Ω

EC-706
[VQ35DE]
SERVICE DATA AND SPECIFICATIONS (SDS)
Revision: 2005 July 2005 FX
InjectorABS006ZT
Fuel PumpABS006ZU
Resistance [at 10 - 60°C (50 - 140 °F)] 13.5 - 17.5 Ω
Resistance [at 25°C (77 °F)] 0.2 - 5.0 Ω

EC-708
[VK45DE]
INDEX FOR DTC
Revision: 2005 July 2005 FX
P0158 0158 HO2S2 (B2)EC-966
P0159 0159 HO2S2 (B2)EC-975
P0171 0171 FUEL SYS-LEAN-B1EC-986
P0172 0172 FUEL SYS-RICH-B1EC-995
P0174 0174 FUEL SYS-LEAN-B2EC-986
P0175 0175 FUEL SYS-RICH-B2EC-995
P0181 0181 FTT SENSOREC-1004
P0182 0182 FTT SEN/CIRCUITEC-1010
P0183 0183 FTT SEN/CIRCUITEC-1010
P0222 0222 TP SEN 1/CIRCEC-1015
P0223 0223 TP SEN 1/CIRCEC-1015
P0300 0300 MULTI CYL MISFIREEC-1022
P0301 0301 CYL 1 MISFIREEC-1022
P0302 0302 CYL 2 MISFIREEC-1022
P0303 0303 CYL 3 MISFIREEC-1022
P0304 0304 CYL 4 MISFIREEC-1022
P0305 0305 CYL 5 MISFIREEC-1022
P0306 0306 CYL 6 MISFIREEC-1022
P0307 0307 CYL 7 MISFIREEC-1022
P0308 0308 CYL 8 MISFIREEC-1022
P0327 0327 KNOCK SEN/CIRC-B1EC-1031
P0328 0328 KNOCK SEN/CIRC-B1EC-1031
P0332 0332 KNOCK SEN/CIRC-B2EC-1031
P0333 0333 KNOCK SEN/CIRC-B2EC-1031
P0335 0335 CKP SEN/CIRCUITEC-1036
P0340 0340 CMP SEN/CIRC-B1EC-1043
P0420 0420 TW CATALYST SYS-B1EC-1050
P0430 0430 TW CATALYST SYS-B2EC-1050
P0441 0441 EVAP PURG FLOW/MONEC-1056
P0442 0442 EVAP SMALL LEAKEC-1061
P0444 0444 PURG VOLUME CONT/VEC-1069
P0445 0445 PURG VOLUME CONT/VEC-1069
P0447 0447 VENT CONTROL VALVEEC-1076
P0451 0451 EVAP SYS PRES SENEC-1083
P0452 0452 EVAP SYS PRES SENEC-1086
P0453 0453 EVAP SYS PRES SENEC-1092
P0455 0455 EVAP GROSS LEAK EC-1100
P0456 0456 EVAP VERY SML LEAKEC-1108
P0460 0460 FUEL LEV SEN SLOSH E C - 111 7
P0461 0461 FUEL LEVEL SENSORE C - 111 9
P0462 0462 FUEL LEVL SEN/CIRCEC-1121
P0463 0463 FUEL LEVL SEN/CIRCEC-1121
DTC*1
Items
(CONSULT-II screen terms) Reference page
CONSULT-II
GST*
2ECM*3

EC-712
[VK45DE]
INDEX FOR DTC
Revision: 2005 July 2005 FX
ENG OVER TEMP P1217 1217 EC-1213
ETC ACTR P1121 1121 EC-1148
ETC FUNCTION/CIRC P1122 1122EC-1150
ETC MOT P1128 1128EC-1161
ETC MOT PWR P1124 1124EC-1156
ETC MOT PWR P1126 1126EC-1156
EVAP GROSS LEAK P0455 0455EC-1100
EVAP PURG FLOW/MON P0441 0441EC-1056
EVAP SMALL LEAK P0442 0442EC-1061
EVAP SYS PRES SEN P0451 0451EC-1083
EVAP SYS PRES SEN P0452 0452EC-1086
EVAP SYS PRES SEN P0453 0453EC-1092
EVAP VERY SML LEAK P0456 0456 EC-1108
FR/B SOLENOID FNCT P1759 1759 AT- 1 5 6
FR/B SOLENOID/CIRC P1757 1757AT- 1 5 4
FTT SEN/CIRCUIT P0182 0182EC-1010
FTT SEN/CIRCUIT P0183 0183EC-1010
FTT SENSOR P0181 0181EC-1004
FUEL LEV SEN SLOSH P0460 0460 E C - 111 7
FUEL LEVEL SENSOR P0461 0461E C - 111 9
FUEL LEVL SEN/CIRC P0462 0462EC-1121
FUEL LEVL SEN/CIRC P0463 0463EC-1121
FUEL SYS-LEAN-B1 P0171 0171 EC-986
FUEL SYS-LEAN-B2 P0174 0174EC-986
FUEL SYS-RICH-B1 P0172 0172EC-995
FUEL SYS-RICH-B2 P0175 0175EC-995
HLR/C SOL/CIRC P1767 1767 AT- 1 6 2
HLR/C SOL FNCTN P1769 1769AT- 1 6 4
HO2S1 (B1) P0132 0132EC-935
HO2S1 (B1) P0133 0133EC-944
HO2S1 (B1) P0134 0134EC-956
HO2S1 (B1) P1143 1143EC-1174
HO2S1 (B1) P1144 1144EC-1180
HO2S1 (B2) P0152 0152 EC-935
HO2S1 (B2) P0153 0153EC-944
HO2S1 (B2) P0154 0154EC-956
HO2S1 (B2) P1163 1163EC-1174
HO2S1 (B2) P1164 1164EC-1180
HO2S1 HTR (B1) P0031 0031 EC-877
HO2S1 HTR (B1) P0032 0032EC-877
HO2S1 HTR (B2) P0051 0051EC-877
HO2S1 HTR (B2) P0052 0052EC-877
Items
(CONSULT-II screen terms) DTC*
1
Reference page
CONSULT-II
GST*
2ECM*3

PRECAUTIONS EC-715
[VK45DE]
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Revision: 2005 July 2005 FX
PRECAUTIONSPFP:00001
Precautions for Supplemental Restraint System (SRS) “AIR BAG” and “SEAT
BELT PRE-TENSIONER”
ABS00A2S
The Supplemental Restraint System such as “AIR BAG” and “SEAT BELT PRE-TENSIONER”, used along
with a front seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain
types of collision. This system includes seat belt switch inputs and dual stage front air bag modules. The SRS
system uses the seat belt switches to determine the front air bag deployment, and may only deploy one front
air bag, depending on the severity of a collision and whether the front occupants are belted or unbelted.
Information necessary to service the system safely is included in the SRS and SB section of this Service Man-
ual.
WARNING:

To avoid rendering the SRS inoperative, which could increase the risk of personal injury or death
in the event of a collision which would result in air bag inflation, all maintenance must be per-
formed by an authorized NISSAN/INFINITI dealer.

Improper maintenance, including incorrect removal and installation of the SRS, can lead to per-
sonal injury caused by unintentional activation of the system. For removal of Spiral Cable and Air
Bag Module, see the SRS section.

Do not use electrical test equipment on any circuit related to the SRS unless instructed to in this
Service Manual. SRS wiring harnesses can be identified by yellow and/or orange harnesses or
harness connectors.
On Board Diagnostic (OBD) System of Engine and A/TABS007H9
The ECM has an on board diagnostic system. It will light up the malfunction indicator lamp (MIL) to warn the
driver of a malfunction causing emission deterioration.
CAUTION:

Be sure to turn the ignition switch OFF and disconnect the negative battery cable before any
repair or inspection work. The open/short circuit of related switches, sensors, solenoid valves,
etc. will cause the MIL to light up.

Be sure to connect and lock the connectors securely after work. A loose (unlocked) connector will
cause the MIL to light up due to the open circuit. (Be sure the connector is free from water, grease,
dirt, bent terminals, etc.)

Certain systems and components, especially those related to OBD, may use a new style slide-
locking type harness connector. For description and how to disconnect, refer to PG-74, "
HAR-
NESS CONNECTOR" .

Be sure to route and secure the harnesses properly after work. The interference of the harness
with a bracket, etc. may cause the MIL to light up due to the short circuit.

Be sure to connect rubber tubes properly after work. A misconnected or disconnected rubber tube
may cause the MIL to light up due to the malfunction of the EVAP system or fuel injection system,
etc.

Be sure to erase the unnecessary malfunction information (repairs completed) from the ECM and
TCM (Transmission control module) before returning the vehicle to the customer.
PrecautionABS007HA

Always use a 12 volt battery as power source.

Do not attempt to disconnect battery cables while engine is
running.

Before connecting or disconnecting the ECM harness con-
nector, turn ignition switch OFF and disconnect negative
battery cable. Failure to do so may damage the ECM
because battery voltage is applied to ECM even if ignition
switch is turned OFF.

Before removing parts, turn ignition switch OFF and then
disconnect battery ground cable.
SEF289H

EC-718
[VK45DE]
PRECAUTIONS
Revision: 2005 July 2005 FX

Do not operate fuel pump when there is no fuel in lines.

Tighten fuel hose clamps to the specified torque.

Do not depress accelerator pedal when starting.

Immediately after starting, do not rev up engine unneces-
sarily.

Do not rev up engine just prior to shutdown.

When installing C.B. ham radio or a mobile phone, be sure
to observe the following as it may adversely affect elec-
tronic control systems depending on installation location.
–Keep the antenna as far as possible from the electronic
control units.
–Keep the antenna feeder line more than 20 cm (8 in) away
from the harness of electronic controls.
Do not let them run parallel for a long distance.
–Adjust the antenna and feeder line so that the standing-
wave radio can be kept smaller.
–Be sure to ground the radio to vehicle body.
PBIB1508E
SEF709Y
SEF708Y