2006 INFINITI QX56 fuel pressure

HARNESSPG-63
C
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F
G H
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L
M A
B
PG
Revision: November 2009 2006 QX56
HORNWW Horn
HSEAT SE Heated Seat
ICC ACS Intelligent Cruise Control
ICCBOF EC ICC Brake Switch
ICC/BS EC ICC Steering Switch
ICC/SW EC ICC Brake Switch
I/MIRR GW Inside Mirror (Auto Anti-Dazzling Mirror)
IATS EC Intake Air Temperature Sensor
IGNSYS EC Ignition System
ILL LT Illumination
INJECT EC Injector
INT/L LT Room/Map, Vanity, Cargo, Personal, Foot, Step, and Puddle Lamps
KEYLES BL Remote Keyless Entry System
KS EC Knock Sensor
MAFS EC Mass Air Flow Sensor
MAIN EC Main Power Supply and Ground Circuit
METER DI Speedometer, Tachometer, Temp. and Fuel Gauges
MIL/DL EC Malfunction Indicator Lamp
MIRROR GW Door Mirror
NATS BL Nissan Anti-Theft System
NAVI AV Navigation System
O2H2B1 EC Rear Heated Oxygen Sensor 2 Heater Bank 1
O2H2B2 EC Rear Heated Oxygen Sensor 2 Heater Bank 2
O2S2B1 EC Heated Oxygen Sensor 2 Bank 1
O2S2B2 EC Heated Oxygen Sensor 2 Bank 2
P/SCKT WW Power Socket
PGC/V EC EVAP Canister Purge Volume Control Solenoid Valve
PHASE EC Camshaft Position Sensor (PHASE) (Bank 1)
PNP/SW EC Park/Neutral Position Switch
POS EC Crankshaft Position Sensor (POS)
POWER PG Power Supply Routing
PRE/SE EC EVAP Control System Pressure Sensor
PS/SEN EC Power Steering Pressure Sensor
R/VIEW DI Rear View Monitor
RP/SEN EC Refrigerant Pressure Sensor
SEN/PW EC Sensor Power Supply
SHIFT AT A/T Shift Lock System
SONAR DI Rear Sonar System
SROOF RF Sunroof
SRS SRS Supplemental Restraint System
START SC Starting System
STOP/L LT Stop Lamp
T/TOW LT Trailer Tow
T/WARN WT Low Tire Pressure Warning System
TAIL/L LT Parking, License and Tail Lamps
T/F TFTransfer Case
TPS1 EC Throttle Position Sensor
TPS2 EC Throttle Position Sensor
TPS3 EC Throttle Position Sensor
TRNSCV BL HOMELINK® Universal Transceiver
TURN LT Turn Signal and Hazard Warning Lamps
VDC BRC Vehicle Dynamic Control System

RSU-28
REAR SUSPENSION ASSEMBLY
Revision: November 20092006 QX56
Wheel Alignment InspectionEES001HH
Rear Wheel Alignment Adjusting Bolts
PRELIMINARY INSPECTION
WARNING:
Always adjust the alignment with the vehicle on a flat surface. Use CONSULT-II “EXHAUST SOLE-
NOID” active test to release the air pressure from the rear load leveling air suspension system.
NOTE:
If alignment is out of specification, inspect and replace any damaged or worn rear suspension parts before
making any adjustments.
1. Check and adjust the wheel alignment with the vehicle under unladen conditions. “Unladen conditions”
means that the fuel, coolant, and lubricant are full; and that the spare tire, jack, hand tools and mats are in
their designated positions.
2. Check the tires for incorrect air pressure and excessive wear.
3. Check the wheels for runout and damage. Refer to WT-5, "
Inspection" .
4. Check the wheel bearing axial end play.
5. Check the shock absorbers. Refer to RSU-27, "
SHOCK ABSORBER INSPECTION" .
6. Check each mounting point of the suspension components for any excessive looseness or damage.
7. Check each link, arm, and the rear suspension member for any damage.
8. Check the vehicle height. Refer to RSU-49, "
Wheelarch Height (Unladen*1 )" .

If vehicle height is not within ± 10 mm (0.39 in) of the specification, perform the control unit initialization
procedure. Refer to RSU-47, "
Initialization Procedure" .
GENERAL INFORMATION AND RECOMMENDATIONS
1. A Four-Wheel Thrust Alignment should be performed.

This type of alignment is recommended for any NISSAN vehicle.

The four-wheel “thrust” process helps ensure that the vehicle is properly aligned and the steering wheel
is centered.

The alignment machine itself should be capable of accepting any NISSAN vehicle.

The alignment machine should be checked to ensure that it is level.
2. Make sure the alignment machine is properly calibrated.

Your alignment machine should be regularly calibrated in order to give correct information.
WEIA0102E
1. Rear lower link adjusting bolt, LH 2. Front lower link adjusting bolt, LH 3. Front lower link adjusting bolt, RH
4. Rear lower link adjusting bolt, RH
Axial end play : 0 mm (0 in)

SC-14
STARTING SYSTEM
Revision: November 20092006 QX56
DIAGNOSTIC PROCEDURE 1
Check Starter Motor Circuit
1. CHECK POWER SUPPLY TO STARTER MOTOR
1. Remove the fuel pump fuse.
2. Crank or start the engine (where possible) until the fuel pressure is released.
3. Turn the ignition switch OFF.
4. Check that the starter motor connector F27 connection is clean and tight.
5. Check voltage between starter motor connector F27 terminal 2 and ground using a digital circuit tester.
OK or NG
OK >> GO TO 2.
NG >> Check harness between the battery and the starter motor for open circuit.
2. CHECK VOLTAGE DROP ON STARTER MOTOR CIRCUIT
Check voltage between starter motor connector F27 terminal 2 and
battery positive terminal using a digital circuit tester.
OK or NG
OK >> GO TO 3.
NG >> Check harness between the battery and the starter motor for poor continuity.
3. CHECK VOLTAGE DROP ON STARTER MOTOR GROUND CIRCUIT
Check voltage between starter motor case and battery negative ter-
minal using a digital circuit tester.
OK or NG
OK >> Starter motor ground circuit is OK. Further inspection is necessary. Refer to SC-13, "
WORK FLOW" .
NG >> Check harness between the starter motor case and ground for poor continuity.
Battery voltage should
exist.
WKIA2105E
Ignition switch in
START.
: Less than 0.5V
WKIA2106E
Ignition switch in
START. : Less than 0.2V
WKIA3437E

STARTING SYSTEMSC-15
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SC
Revision: November 2009 2006 QX56
DIAGNOSTIC PROCEDURE 2
Check Magnetic Switch Circuit
1. CHECK POWER SUPPLY FOR MAGNETIC SWITCH
1. Remove the fuel pump fuse.
2. Crank or start the engine (where possible) until the fuel pressure is released.
3. Turn the ignition switch OFF.
4. Disconnect starter motor connector F28.
5. Check voltage between starter motor connector F28 terminal 1 and ground using a digital circuit tester.
OK or NG
OK >> GO TO 2.
NG >> Check the following.

40A fusible link (letter m , located in fuse and fusible
link box)

Ignition switch

Starter relay [within the intelligent power distribution module engine room (IPDM E/R)]

Harness for open or short
2. CHECK VOLTAGE DROP ON MAGNETIC SWITCH CIRCUIT
1. Turn the ignition switch OFF.
2. Connect starter motor connector F28.
3. Check voltage between starter motor connector F28 terminal 1 and battery positive terminal using a digital circuit tester.
OK or NG
OK >> Magnetic switch circuit is OK. Further inspection is nec- essary. Refer to SC-13, "
WORK FLOW" .
NG >> Check harness between the battery and the magnetic
switch for poor continuity.
Ignition switch in
START.
: Battery voltage
WKIA2108E
Ignition switch in
START. : Less than 1V
WKIA1792E