2005 INFINITI QX4 fuse chart

TROUBLE DIAGNOSIS — GENERAL DESCRIPTION
ACS-33
[ICC]
C
D
E
F
G
H
I
J
L
MA
B
ACS
Revision: October 20052005 QX56

When multiple malfunctions are detected, a maximum of 3 code numbers can be stored; the lat-
est malfunction will be displayed first.
6. Check ACS-36, "
Diagnostic Trouble Code (DTC) Chart" , and repair or replace if necessary.
7. After repair, erase DTC stored in the ICC unit. Refer to ACS-33, "
Self-Diagnostic Erasing Method"
8. DTC 55 will be shown.
9. Turn ignition switch OFF to exit the diagnosis.
10. Perform ICC system running test (drive vehicle with ICC system ON), and make sure that ICC warning
lamp does not illuminate.
Self-Diagnostic Erasing Method
1. Stop the vehicle and turn the ignition switch OFF.
2. Turn ignition switch ON and start self-diagnosis.
3. During self-diagnosis mode, press CANCEL switch 5 times, and DISTANCE switch 5 times within a 10
second time period.
CAUTION:

Switch inputs must be received within a 10 second time period.

When operation is not completed within 10 seconds start again from step 1.
4. DTC 55 will be shown.
CAUTION:
DTC of an existing malfunction will not be erased.
5. Turn ignition switch OFF to exit the diagnosis.
6. Perform ICC system running test (drive vehicle with ICC system ON), and make sure that ICC system
warning lamp (orange) does not illuminate.
SELF-DIAGNOSIS BY ICC SYSTEM DISPLAY WILL NOT RUN
Self Diagnosis Will Not Run
WKIA1985E
Component Failure Specific causes
ICC unit power supply malfunctionNo voltage supply from ignition switchFuse blown
Harness open
Harness shorted
Ground cable not connectedHarness open
Harness shorted
ICC steering switch malfunction No signal transmittedHarness open
Harness shorted
Spiral cable open
Spiral cable shorted
Switch or ECM malfunction
CAN communication system malfunction Signal not transmittedHarness open
Harness shorted
CAN communication outside the standard

POWER DOOR LOCK SYSTEM
BL-29
C
D
E
F
G
H
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K
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MA
B
BL
Revision: October 20052005 QX56
Trouble Diagnoses Symptom ChartEIS008PL
BCM Power Supply and Ground Circuit CheckEIS008PM
1. CHECK FUSE AND FUSIBLE LINK
Check the following BCM fuse and fusible link.
NOTE:
Refer to BL-99, "
Component Parts and Harness Connector Location" .
OK or NG
OK >> GO TO 2.
NG >> If fuse is blown, be sure to eliminate cause of problem before installing new fuse, refer to PG-4,
"POWER SUPPLY ROUTING CIRCUIT" .
Symptom Repair order Refer to page
Key reminder door function does not operate
properly.1. Door switch checkBL-31
2. Key switch (insert) checkBL-33
3. Replace BCM.BCS-20
Power door lock does not operate with door lock
and unlock switch on main power window and
door lock/unlock switch or power window and
door lock/unlock switch RH.1. Door lock/unlock switch checkBL-34
2. Replace BCM.BCS-20
Front door lock assembly LH (actuator) does not
operate.1. Front door lock assembly LH (Actuator) checkBL-38
Specific door lock actuator does not operate.1. Front door lock actuator RH checkBL-392. Rear door lock actuator RH/LH checkBL-40
3. Back doorBL-99
Power door lock does not operate with front door
key cylinder LH operation.1. Front door lock assembly LH (key cylinder
switch) checkBL-42
2. Replace BCM.BCS-20
Power door lock does not operate.1. BCM power supply and ground circuit checkBL-292. Door lock/unlock switch checkBL-34
Back door opener does not operate.1. Back door power supply and ground circuit
inspectionBL-1152. Door switch checkBL-31
3. Power liftgate switch system inspectionBL-116
Glass hatch lock actuator does not operate.1. Glass hatch switch checkBL-362. Glass hatch lock actuator checkBL-41
3. Replace BCM.BCS-20
Component Parts Terminal No. (SIGNAL) Ampere No. Location
BCM 57 (BAT power supply) 15A 22 Fuse block (J/B)
BCM 70 (BAT power supply) 50AfFuse and fusible link box

REMOTE KEYLESS ENTRY SYSTEM
BL-59
C
D
E
F
G
H
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MA
B
BL
Revision: October 20052005 QX56
Trouble Diagnosis ProcedureEIS0 08 Q6
1. Check the symptom and customer's requests.
2. Understand outline of system. Refer to BL-45, "
System Description" .
3. Confirm system operation.

Check that the power door lock system operates normally. Refer to BL-16, "POWER DOOR LOCK
SYSTEM" .

Check that the automatic back door system operates normally. Refer to BL-99, "AUTOMATIC BACK
DOOR SYSTEM" .
4. Perform pre-diagnosis inspection. Refer to BL-59, "
BCM Power Supply and Ground Circuit Check" .
5. Refer to trouble diagnosis chart by symptom, repair or replace any malfunctioning parts. Refer to BL-60,
"Trouble Diagnoses" .
6. Inspection End.
BCM Power Supply and Ground Circuit CheckEIS0 08 Q7
1. CHECK FUSE AND FUSIBLE LINK
Check the following BCM fuses and fusible link.
NOTE:
Refer to BL-44, "
Component Parts and Harness Connector Location" .
OK or NG
OK >> GO TO 2.
NG >> If fuse is blown, be sure to eliminate cause of problem before installing new fuse, refer to PG-4,
"POWER SUPPLY ROUTING CIRCUIT" .
2. CHECK POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect BCM.
3. Check voltage between BCM connectors M18, M20 terminals
11, 38, 57, 70 and ground.
OK or NG
OK >> GO TO 3.
NG >> Repair or replace harness.
Component Parts Terminal No. (SIGNAL) Ampere No. Location
BCM57 (BAT power supply) 15A 22 Fuse block (J/B)
70 (BAT power supply) 50AfFuse and fusible link box
11 (ACC power supply) 10A 4 Fuse block (J/B)
38 (IGN power supply) 10A 59 Fuse and relay box
ConnectorTerminals
Signal nameIgnition
switchVo l ta g e
(+) (–)
M2070
GroundBattery power
supplyOFFBattery
voltage
57Battery power
supplyOFFBattery
voltage
M1811ACC power
supplyACCBattery
voltage
38IGN power
supplyONBattery
voltage
WIIA0600E

BL-146
IVIS (INFINITI VEHICLE IMMOBILIZER SYSTEM-NATS)
Revision: October 20052005 QX56
SYMPTOM MATRIX CHART 2
Non self-diagnosis related item
*: CONSULT-II self-diagnostic results display screen “no malfunction is detected”.
DIAGNOSTIC SYSTEM DIAGRAM
SymptomDiagnostic Procedure
(Reference page)System
(Malfunctioning part or mode)Reference Part No. Of Illustra-
tion On System Diagram
Security indicator does not light
up*.PROCEDURE 6
(BL-154
)Combination meter (security
indictor lamp)—
Open circuit between fuse and
BCM—
BCM A
WIIA0550E

IVIS (INFINITI VEHICLE IMMOBILIZER SYSTEM-NATS)
BL-147
C
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MA
B
BL
Revision: October 20052005 QX56
Diagnostic Procedure 1EIS008S5
Self-diagnostic results:
“CHAIN OF ECM-IMMU” displayed on CONSULT-II screen
First perform the “SELF-DIAG RESULTS” in “BCM” with CONSULT-II, then perform the trouble diagno-
sis of malfunction system indicated “SELF-DIAG RESULTS” of “BCM”. Refer to BL-141, "
CONSULT-II"
.
1. CONFIRM SELF-DIAGNOSTIC RESULTS
Confirm SELF-DIAGNOSTIC RESULTS “CHAIN OF ECM-IMMU”
displayed on CONSULT-II screen.
NOTE:
In rare case, “CHAIN OF ECM-IMMU” might be stored during key
registration procedure, even if the system is not malfunctioning.
Is CONSULT-II screen displayed as above?
YES >> GO TO 2.
NO >> GO TO BL-145, "
SYMPTOM MATRIX CHART 1" .
2. CHECK POWER SUPPLY CIRCUIT FOR BCM
1. Turn ignition switch OFF.
2. Disconnect BCM.
3. Check voltage between BCM connector M20 terminal 70 and ground.
OK or NG
OK >> GO TO 3.
NG >> Check the following:

50A fusible link (letter f , located in fuse and fusible
link box)

Harness for open or short between fuse and BCM
connector. Ref. Part No. C1
3. CHECK IGN SW. ON SIGNAL
1. Turn ignition switch ON.
2. Check voltage between BCM connector M18 terminal 38 and ground.
OK or NG
OK >> GO TO 4.
NG >> Check the following:

10A fuse [No. 59, located in the fuse and relay box]

Harness for open or short between fuse and BCM
connector. Ref. part No. C2
PIIA1260E
70 - Ground :Battery voltage
LIIA1279E
38 - Ground :Battery voltage
LIIA0527E

GI-18
HOW TO USE THIS MANUAL
Revision: October 20052005 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

IDX-4
ALPHABETICAL INDEX
Drive chain (Transfer) ......................... TF-147, TF-174
Drive pinion diff. inspection ............................. RFD-13
Drive pinion height .......................................... RFD-18
Drive shaft (rear) ............................................... RAX-7
Driver air bag .................................................. SRS-46
DTC work support ............................................ EC-136
DTRL - Wiring diagram ....................................... LT-37
Duct and grilles .............................................. ATC-170
DVD Player ........................................................ AV-60
E
ECM input/output signal ..................... EC-117
, EC-141
ECM power supply ............................. EC-157, EC-393
ECM relay ........................................................ EC-157
ECM/PW - Wiring diagram ............................... EC-394
ECTS - Wiring diagram .................................... EC-197
Electric sunroof .................................................. RF-10
Electric throttle control actuator ......... EC-397, EC-399
Electrical load signal circuit .............................. EC-648
Electrical units location ...................................... PG-63
Electronic ignition (EI) system ........................... EC-26
Engine control circuit diagram ......................... EC-115
Engine control component parts location ......... EC-108
Engine control module (ECM) .......................... EC-383
Engine control system diagram ......................... EC-23
Engine coolant .................................................. CO-10
Engine coolant temperature sensor (ECTS) ... EC-195,
EC-208
Engine fail-safe system .................................... EC-103
Engine oil ............................................................. LU-7
Engine oil filter replacement ............................. MA-17
Engine oil precautions .......................................... GI-7
Engine oil replacement ..................................... MA-17
Engine removal ................................................. EM-69
Engine room cover ............................................ EM-11
Engine serial number .......................................... GI-48
ETC1 - Wiring diagram .................................... EC-400
ETC2 - Wiring diagram .................................... EC-407
ETC3 - Wiring diagram .................................... EC-411
EVAP canister .................................................... EC-35
EVAP canister purge volume control solenoid valve ....
EC-318
, EC-531
EVAP canister vent control valve ....... EC-325, EC-539
EVAP control system (small leak) diagnosis .. EC-309,
EC-349
, EC-357
EVAP control system pressure sensor .... EC-332, EC-
335, EC-341
EVAP control system purge flow monitoring diagnosis
EC-304
EVAP vapor lines inspection ............................. MA-20
Evaporative emission (EVAP) system ............... EC-32
Evaporator ..................................................... ATC-186
Exhaust manifold .............................................. EM-19
Exhaust system ................................................... EX-3
Exhaust system inspection .................................. EX-3
Expansion valve ............................................. ATC-188
F
F/FOG - Wiring diagram ..................................... LT-71
F/PUMP - Wiring diagram ............................... EC-638
Final drive pre-inspection .................. FFD-14, RFD-13
Final drive removal and installation ... FFD-11, RFD-10
Flow charts .......................................................... GI-27
Fluid temperature sensor (A/T) ........................ AT-126
Fluids ................................................................ MA-11
Fluorescent leak detector .............................. ATC-189
Fog lamp, front ................................................... LT-69
Foot lamp ......................................................... LT-130
Freeze frame data ............................... EC-54, EC-130
Front brake solenoid valve ................. AT-144, AT-146
Front bumper ...................................................... EI-13
Front case (Transfer) .......................... TF-147, TF-174
Front combination lamp removal and installation LT-32
Front door ............................. BL-128, BL-131, GW-68
Front Door Trim ................................................... EI-32
Front drive shaft (Transfer) ................. TF-147, TF-174
Front fog lamp .................................................... LT-69
Front passenger air bag .................................. SRS-51
Front seat ........................................................... SE-97
Front seat belt ...................................................... SB-3
Front seat belt pre-tensioner ............... SRS-3, SRS-58
Front washer ...................................................... WW-4
Front wiper ......................................................... WW-4
FTTS - Wiring diagram ...................... EC-255, EC-260
Fuel cut control (at no load high engine speed) EC-27
Fuel filter replacement ......................................... FL-5
Fuel gauge ............................................................ DI-5
Fuel injection system (Bank 1) .......... EC-236, EC-245
Fuel injection system (Bank 2) .......... EC-236, EC-245
Fuel injector and fuel tube ................................. EM-29
Fuel level sensor ................. EC-366, EC-368, EC-370
Fuel line inspection .............................................. FL-3
Fuel pressure check .......................................... EC-93
Fuel pressure release ....................................... EC-93
Fuel pump ....................................................... EC-637
Fuel pump and gauge .......................................... FL-5
Fuel system .......................................................... FL-3
Fuel tank .............................................................. FL-9
Fuel tank temperature sensor ........... EC-253, EC-259
Fuel tank vacuum relief valve ........................... EC-35
FUELB1 - Wiring diagram ................. EC-238, EC-247
FUELB2 - Wiring diagram ................. EC-239, EC-248
Fuse ...................................................... PG-66, PG-77
Fuse and fusible link box .................................. PG-77
Fuse block ......................................................... PG-76
Fusible link ............................................ PG-66, PG-77
G
Garage jack and safety stand ............................. GI-40
Gauges ................................................................. DI-5
Generator .......................................................... SC-17
Generic scan tool (GST) ................................. EC-139
Glass ...................................... GW-11, GW-68, GW-71
Glove box lamp ................................................ LT-153

AUTO LIGHT SYSTEM
LT-55
C
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F
G
H
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MA
B
LT
Revision: October 20052005 QX56
1 USA
2 Canada
How to Proceed With Trouble DiagnosisEKS00B8Z
1. Confirm the symptom or customer complaint.
2. Understand operation description and function description. Refer to LT- 4 8 , "
System Description" .
3. Carry out the Preliminary Check. Refer to LT- 5 5 , "
Preliminary Check" .
4. Check symptom and repair or replace the cause of malfunction. Refer to LT- 6 2 , "
Trouble Diagnosis Chart
by Symptom" .
5. Does the auto light system operate normally? If YES: GO TO 6. If NO: GO TO 4.
6. Inspection End.
Preliminary CheckEKS00B90
SETTING CHANGE FUNCTIONS

Sensitivity of auto light system can be adjusted using CONSULT-II. Refer to LT-58, "WORK SUPPORT" .
CHECK POWER SUPPLY AND GROUND CIRCUIT
1. CHECK FUSES OR FUSIBLE LINK
Check for blown fuses or fusible link.
Refer to LT- 5 0 , "
Wiring Diagram — AUTO/L —" .
OK or NG
OK >> GO TO 2.
NG >> If fuse or fusible link is blown, be sure to eliminate cause of malfunction before installing new fuse
or fusible link. Refer to PG-4, "
POWER SUPPLY ROUTING CIRCUIT" .
56L/W1
Y2Headlamp high (RH) ONLighting switch
HIGH or PASS
positionOFF 0V
ON Battery voltage
57 R/LParking, license, and tail
lampONLighting switch
1ST positionOFF 0V
ON Battery voltage
59 B Ground ON — 0V Te r m i n a l
No.Wire
colorSignal nameMeasuring condition
Reference value
(Approx.) Ignition
switchOperation or condition
Unit Power source Fuse and fusible link No.
BCMBattery f
Ignition switch ON or START position 59
IPDM E/R Battery34
35
37
40
41
53