ESP INFINITI QX56 2004 Factory Owners Manual
[x] Cancel search | Manufacturer: INFINITI, Model Year: 2004, Model line: QX56, Model: INFINITI QX56 2004Pages: 3371, PDF Size: 78.5 MB
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GI-4
PRECAUTIONS
Revision: August 20072004 QX56
General PrecautionsEAS00148
Do not operate the engine for an extended period of time without
proper exhaust ventilation.
Keep the work area well ventilated and free of any flammable
materials. Special care should be taken when handling any flam-
mable or poisonous materials, such as gasoline, refrigerant gas,
etc. When working in a pit or other enclosed area, be sure to
properly ventilate the area before working with hazardous mate-
rials.
Do not smoke while working on the vehicle.
Before jacking up the vehicle, apply wheel chocks or other tire
blocks to the wheels to prevent the vehicle from moving. After
jacking up the vehicle, support the vehicle weight with safety
stands at the points designated for proper lifting before working
on the vehicle.
These operations should be done on a level surface.
When removing a heavy component such as the engine or tran-
saxle/transmission, be careful not to lose your balance and drop
them. Also, do not allow them to strike adjacent parts, especially
the brake tubes and master cylinder.
Before starting repairs which do not require battery power:
Turn off ignition switch.
Disconnect the negative battery terminal.
If the battery terminals are disconnected, recorded memory of
radio and each control unit is erased.
Battery posts, terminals and related accessories contain lead
and lead compounds. Wash hands after handling.
To prevent serious burns:
Avoid contact with hot metal parts.
Do not remove the radiator cap when the engine is hot.
Dispose of or recycle drained oil or the solvent used for cleaning
parts in an appropriate manner.
Do not attempt to top off the fuel tank after the fuel pump nozzle
shuts off automatically.
Continued refueling may cause fuel overflow, resulting in fuel
spray and possibly a fire.
Clean all disassembled parts in the designated liquid or solvent
prior to inspection or assembly.
Replace oil seals, gaskets, packings, O-rings, locking washers, cotter pins, self-locking nuts, etc. with new
ones.
Replace inner and outer races of tapered roller bearings and needle bearings as a set.
Arrange the disassembled parts in accordance with their assembled locations and sequence.
Do not touch the terminals of electrical components which use microcomputers (such as ECM).
Static electricity may damage internal electronic components.
After disconnecting vacuum or air hoses, attach a tag to indicate the proper connection.
Use only the fluids and lubricants specified in this manual.
SGI285
SGI231
SEF 2 89 H
SGI233
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HOW TO USE THIS MANUAL
GI-15
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Revision: August 20072004 QX56
How to Read Wiring DiagramsEAS0014L
CONNECTOR SYMBOLS
Most of connector symbols in wiring diagrams are shown from the
terminal side.
Connector symbols shown from the terminal side are enclosed
by a single line and followed by the direction mark.
Connector symbols shown from the harness side are enclosed
by a double line and followed by the direction mark.
Certain systems and components, especially related to OBD,
may use a new style slide-locking type harness connector. For
description and how to disconnect, refer to PG-68, "
HARNESS
CONNECTOR" .
Male and female terminals
Connector guides for male terminals are shown in black and
female terminals in white in wiring diagrams.
SGI364
SGI363
Page 2099 of 3371
GI-18
HOW TO USE THIS MANUAL
Revision: August 20072004 QX56
14 Wire color
This shows a code for the color of the wire.
B = Black
W = White
R = Red
G = Green
L = Blue
Y = Yellow
LG = Light GreenBR = Brown
OR or O = Orange
P = Pink
PU or V (Violet) = Purple
GY or GR = Gray
SB = Sky Blue
CH = Dark Brown
DG = Dark Green
When the wire color is striped, the base color is given first, followed by the stripe color as shown
below:
Example: L/W = Blue with White Stripe
15 Option description
This shows a description of the option abbreviation used on the page.
16 Switch
This shows that continuity exists between terminals 1 and 2 when the switch is in the A posi-
tion. Continuity exists between terminals 1 and 3 when the switch is in the B position.
17 Assembly parts
Connector terminal in component shows that it is a harness incorporated assembly.
18 Cell code
This identifies each page of the wiring diagram by section, system and wiring diagram page
number.
19 Current flow arrow
Arrow indicates electric current flow, especially where the direction of standard flow (vertically
downward or horizontally from left to right) is difficult to follow.
A double arrow “ ” shows that current can flow in either direction depending on cir-
cuit operation.
20 System branch
This shows that the system branches to another system identified by cell code (section and
system).
21 Page crossing
This arrow shows that the circuit continues to another page identified by cell code.
The C will match with the C on another page within the system other than the next or preced-
ing pages.
22 Shielded line
The line enclosed by broken line circle shows shield wire.
23Component box in
wave line
This shows that another part of the component is also shown on another page (indicated by
wave line) within the system.
24 Component name
This shows the name of a component.
25 Connector number
This shows the connector number.
The letter shows which harness the connector is located in.
Example: M : main harness. For detail and to locate the connector, refer to PG section "Main
Harness", “Harness Layout”. A coordinate grid is included for complex harnesses to aid in
locating connectors.
26 Ground (GND)
The line spliced and grounded under wire color shows that ground line is spliced at the
grounded connector.
27 Ground (GND)
This shows the ground connection. For detailed ground distribution information, refer to
"Ground Distribution" in PG section.
28 Connector views
This area shows the connector faces of the components in the wiring diagram on the page.
29 Common component
Connectors enclosed in broken line show that these connectors belong to the same compo-
nent.
30 Connector color
This shows a code for the color of the connector. For code meaning, refer to wire color codes,
Number 14 of this chart.
31Fusible link and fuse
box
This shows the arrangement of fusible link(s) and fuse(s), used for connector views of
"POWER SUPPLY ROUTING" in PG section.
The open square shows current flow in, and the shaded square shows current flow out.
32 Reference area
This shows that more information on the Super Multiple Junction (SMJ) and Joint Connectors
(J/C) exists on the PG section. Refer to "Reference Area" for details. Num-
berItem Description
Page 2140 of 3371
SQUEAK AND RATTLE TROUBLE DIAGNOSES
GW-5
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Revision: August 20072004 QX56
SQUEAK AND RATTLE TROUBLE DIAGNOSESPFP:00000
Work FlowEIS0 02 UI
CUSTOMER INTERVIEW
Interview the customer if possible, to determine the conditions that exist when the noise occurs. Use the Diag-
nostic Worksheet during the interview to document the facts and conditions when the noise occurs and any
customer's comments; refer to GW-9, "
Diagnostic Worksheet" . This information is necessary to duplicate the
conditions that exist when the noise occurs.
The customer may not be able to provide a detailed description or the location of the noise. Attempt to
obtain all the facts and conditions that exist when the noise occurs (or does not occur).
If there is more than one noise in the vehicle, be sure to diagnose and repair the noise that the customer
is concerned about. This can be accomplished by test driving the vehicle with the customer.
After identifying the type of noise, isolate the noise in terms of its characteristics. The noise characteristics
are provided so the customer, service adviser and technician are all speaking the same language when
defining the noise.
Squeak —(Like tennis shoes on a clean floor)
Squeak characteristics include the light contact/fast movement/brought on by road conditions/hard sur-
faces = higher pitch noise/softer surfaces = lower pitch noises/edge to surface = chirping.
Creak—(Like walking on an old wooden floor)
Creak characteristics include firm contact/slow movement/twisting with a rotational movement/pitch
dependent on materials/often brought on by activity.
Rattle—(Like shaking a baby rattle)
Rattle characteristics include the fast repeated contact/vibration or similar movement/loose parts/missing
clip or fastener/incorrect clearance.
Knock —(Like a knock on a door)
Knock characteristics include hollow sounding/sometimes repeating/often brought on by driver action.
Tick—(Like a clock second hand)
Tick characteristics include gentle contacting of light materials/loose components/can be caused by driver
action or road conditions.
Thump—(Heavy, muffled knock noise)
Thump characteristics include softer knock/dead sound often brought on by activity.
Buzz—(Like a bumble bee)
Buzz characteristics include high frequency rattle/firm contact.
Often the degree of acceptable noise level will vary depending upon the person. A noise that you may
judge as acceptable may be very irritating to the customer.
Weather conditions, especially humidity and temperature, may have a great effect on noise level.
SBT 8 42
Page 2249 of 3371
IP-4
SQUEAK AND RATTLE TROUBLE DIAGNOSIS
Revision: August 20072004 QX56
SQUEAK AND RATTLE TROUBLE DIAGNOSISPFP:00000
Work FlowEIS002XR
CUSTOMER INTERVIEW
Interview the customer, if possible, to determine the conditions that exist when the noise occurs. Use the Diag-
nostic Worksheet during the interview to document the facts and conditions when the noise occurs and any
customer's comments; refer to IP-8, "
Diagnostic Worksheet" . This information is necessary to duplicate the
conditions that exist when the noise occurs.
The customer may not be able to provide a detailed description or the location of the noise. Attempt to
obtain all the facts and conditions that exist when the noise occurs (or does not occur).
If there is more than one noise in the vehicle, be sure to diagnose and repair the noise that the customer
is concerned about. This can be accomplished by test driving the vehicle with the customer.
After identifying the type of noise, isolate the noise in terms of its characteristics. The noise characteristics
are provided so the customer, service adviser and technician are all speaking the same language when
defining the noise.
–Squeak — (Like tennis shoes on a clean floor)
Squeak characteristics include the light contact/fast movement/brought on by road conditions/hard sur-
faces = higher pitch noise/softer surfaces = lower pitch noises/edge to surface = chirping.
–Creak — (Like walking on an old wooden floor)
Creak characteristics include firm contact/slow movement/twisting with a rotational movement/pitch
dependent on materials/often brought on by activity.
–Rattle — (Like shaking a baby rattle)
Rattle characteristics include the fast repeated contact/vibration or similar movement/loose parts/missing
clip or fastener/incorrect clearance.
–Knock — (Like a knock on a door)
Knock characteristics include hollow sounding/sometimes repeating/often brought on by driver action.
–Tick — (Like a clock second hand)
Tick characteristics include gentle contacting of light materials/loose components/can be caused by driver
action or road conditions.
–Thump — (Heavy, muffled knock noise)
Thump characteristics include softer knock/dead sound often brought on by activity.
–Buzz — (Like a bumblebee)
Buzz characteristics include high frequency rattle/firm contact.
Often the degree of acceptable noise level will vary depending upon the person. A noise that you may
judge as acceptable may be very irritating to the customer.
Weather conditions, especially humidity and temperature, may have a great effect on noise level.
SBT 8 42
Page 2437 of 3371
LT-6
HEADLAMP (FOR USA)
Revision: August 20072004 QX56
HEADLAMP (FOR USA)PFP:26010
Component Parts and Harness Connector LocationEKS0079P
System DescriptionEKS0079Q
Control of the headlamp system operation is dependent upon the position of the combination switch (lighting
switch). When the lighting switch is placed in the 2ND position, the BCM (body control module) receives input
requesting the headlamps (and tail lamps) illuminate. This input is communicated to the IPDM E/R (intelligent
power distribution module engine room) across the CAN communication lines. The CPU (central processing
unit) of the IPDM E/R controls the headlamp high and headlamp low relay coils. When energized, these relays
direct power to the respective headlamps, which then illuminate.
OUTLINE
Power is supplied at all times
to headlamp high relay, located in the IPDM E/R, and
to headlamp low relay, located in the IPDM E/R, and
to ignition relay, located in the IPDM E/R, and
through 20A fuse (No. 53, located in the IPDM E/R)
to CPU of the IPDM E/R, and
through 10A fuse [No. 19, located in the fuse block (J/B)]
WKIA3392E
Page 2532 of 3371
COMBINATION SWITCH
LT-101
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Revision: August 20072004 QX56
3. HARNESS INSPECTION
1. Turn ignition switch OFF.
2. Disconnect BCM and combination switch connectors.
3. Check for continuity between BCM harness connector of the suspect system and the corresponding com-
bination switch connector terminals.
4. Check for continuity between each terminal of BCM harness connector in suspect malfunctioning system
and ground.
OK or NG
OK >> GO TO 4.
NG >> Check harness between BCM and combination switch for open or short circuit.
Sus-
pect
systemTe r m i n a l s
Continuity BCM Combination switch
ConnectorTe r m i n a l
(wire color)ConnectorTe r m i n a l
(wire color)
1
M18Input 1 6 (V)
M286 (V)
Ye s Output 1 36 (R/W) 1 (R/W)
2Input 2 5 (G/B) 7 (G/B)
Output 2 35 (O/B) 2 (O/B)
3Input 3 4 (Y) 10 (Y)
Output 3 34 (L) 3 (L)
4Input 4 3 (G/Y) 9 (G/Y)
Output 4 33 (R/Y) 4 (R/Y)
5Input 5 2 (SB) 8 (SB)
Output 5 32 (R/G) 5 (R/G)
Suspect
systemTe r m i n a l s
Continuity BCM
Connector Terminal (wire color)
1
M18Input 1 6 (V)
Ground No Output 1 36 (R/W)
2Input 2 5 (G/B)
Output 2 35 (O/B)
3Input 3 4 (Y)
Output 3 34 (L)
4Input 4 3 (G/Y)
Output 4 33 (R/Y)
5Input 5 2 (SB)
Output 5 32 (R/G)
LKIA0284E
Page 2728 of 3371
HARNESS CONNECTOR
PG-69
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Revision: August 20072004 QX56
HARNESS CONNECTOR (SLIDE-LOCKING TYPE)
A new style slide-locking type connector is used on certain systems and components, especially those
related to OBD.
The slide-locking type connectors help prevent incomplete locking and accidental looseness or discon-
nection.
The slide-locking type connectors are disconnected by pushing or pulling the slider. Refer to the illustra-
tion below.
CAUTION:
Do not pull the harness or wires when disconnecting the connector.
Be careful not to damage the connector support bracket when disconnecting the connector.
[Example]
AEL299C
Page 2805 of 3371
RF-4
SQUEAK AND RATTLE TROUBLE DIAGNOSES
Revision: August 20072004 QX56
SQUEAK AND RATTLE TROUBLE DIAGNOSESPFP:00000
Work FlowEIS002WG
CUSTOMER INTERVIEW
Interview the customer if possible, to determine the conditions that exist when the noise occurs. Use the Diag-
nostic Worksheet during the interview to document the facts and conditions when the noise occurs and any
customer comments; refer to RF-8, "
Diagnostic Worksheet" . This information is necessary to duplicate the
conditions that exist when the noise occurs.
The customer may not be able to provide a detailed description or the location of the noise. Attempt to
obtain all the facts and conditions that exist when the noise occurs (or does not occur).
If there is more than one noise in the vehicle, be sure to diagnose and repair the noise that the customer
is concerned about. This can be accomplished by test driving the vehicle with the customer.
After identifying the type of noise, isolate the noise in terms of its characteristics. The noise characteristics
are provided so the customer, service adviser and technician are all speaking the same language when
defining the noise.
Squeak —(Like tennis shoes on a clean floor)
Squeak characteristics include the light contact/fast movement/brought on by road conditions. Hard sur-
faces = higher pitch noise/softer surfaces = lower pitch noises/edge to surface = chirping.
Creak—(Like walking on an old wooden floor)
Creak characteristics include firm contact/slow movement/twisting with a rotational movement/pitch
dependent on materials/often brought on by activity.
Rattle—(Like shaking a baby rattle)
Rattle characteristics include the fast repeated contact/vibration or similar movement/loose parts/missing
clip or fastener/incorrect clearance.
Knock —(Like a knock on a door)
Knock characteristics include hollow sounding/sometimes repeating/often brought on by driver action.
Tick—(Like a clock second hand)
Tick characteristics include gentle contacting of light materials/loose components/can be caused by driver
action or road conditions.
Thump—(Heavy, muffled knock noise)
Thump characteristics include softer knock/dead sound often drought on by activity.
Buzz—(Like a bumble bee)
Buzz characteristics include high frequency rattle/firm contact.
Often the degree of acceptable noise level will vary depending upon the person. A noise that you may
judge as acceptable may be irritating to the customer.
Weather conditions, especially humidity and temperature, may have a great effect on noise level.
SBT 8 42
Page 2837 of 3371
RFD-6
FRONT OIL SEAL
Revision: August 20072004 QX56
FRONT OIL SEALPFP:38189
Removal and InstallationEDS002JK
REMOVAL
1. Remove the drive shaft inside flange bolts to disconnect the rear drive shafts from the rear final drive.
Support the rear drive shafts using suitable wire.
NOTE:
Disconnecting the rear drive shafts is necessary to measure the total preload accurately.
2. Remove the rear propeller shaft. Refer to PR-8, "
Removal and Installation" .
CAUTION:
Do not damage the propeller shaft tube.
3. Check the total preload. Refer to RFD-12, "
TOTAL PRELOAD" .
4. Put a mark on the end of the drive pinion corresponding to the
position mark “B” on the companion flange as shown.
CAUTION:
Use paint to make the matching mark “B” on the drive
pinion. Never damage the drive pinion.
The mark “B” on the companion flange indicates the
maximum vertical runout position.
5. Remove drive pinion nut using Tool as shown.
Discard the drive pinion nut and use a new drive pinion nut for
installation.
6. Use a suitable puller to remove the companion flange as shown.
SDIA0270E
Tool number : KV40104000 ( — )
LDIA0105E
LDIA0106E