Fuse INFINITI QX56 2006 Factory Service Manual
[x] Cancel search | Manufacturer: INFINITI, Model Year: 2006, Model line: QX56, Model: INFINITI QX56 2006Pages: 3383, PDF Size: 51.76 MB
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TRAILER TOW
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TRAILER TOWPFP:93020
Component Parts and Harness Connector LocationEKS00BB1
System DescriptionEKS00BB2
Power is supplied at all times
to ignition relay, located in the IPDM E/R (intelligent power distribution module engine room), and
through 50A fusible link (letter f , located in the fuse and fusible link box)
to BCM (body control module) terminal 70, and
through 10A fuse (No. 32, located in the IPDM E/R)
1. Fuse and fusible link box2. IPDM E/R fuse layout 3. Fuse and relay box
4. IPDM E/R E118, E119, E120, E121, E122, E123, E124 5. A. Steering column
B. Data link connector M22
C. BCM M18, M19, M20
(View with instrument lower panel
LH removed) 6. A. Trailer turn relay LH E156
B. Battery
C. Trailer tow relay 2 E140
D. Trailer turn relay RH E157
7. A. Trailer tow relay 1 M51 B. Electric brake (pre-wiring) M76
(View with instrument lower panel
LH removed) 8. Trailer connector C2
9. Combination switch (lighting switch)
M28
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TRAILER TOWLT-127
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through IPDM E/R terminal 61
to trailer tow relay 1 terminal 3, and
through 20A fuse (No. 53, located in the IPDM E/R)
to CPU (central processing unit) of the IPDM E/R, and
through 30A fusible link (letter j , located in the fuse and fusible link box)
to trailer tow relay 2 terminals 3 and 6, and
through 40A fusible link (letter k , located in the fuse and fusible link box)
to electric brake (pre-wiring) terminal 5.
With the ignition switch in the ON or START position, power is supplied
to ignition relay, located in the IPDM E/R, and
through 10A fuse (No. 59, located in the fuse and relay box)
to BCM terminal 38, and
through 10A fuse (No. 51, located in the IPDM E/R)
to trailer tow relay 2 terminal 1.
Ground is supplied
to BCM terminal 67
to electric brake (pre-wiring) terminal 1, and
through grounds M57, M61 and M79, and
to IPDM E/R terminals 38 and 59
to trailer tow relay 1 terminal 2
to trailer tow relay 2 terminal 2, and
to trailer connector terminal 2
to trailer turn relay LH and RH terminal 2
through grounds E9, E15 and E24.
TRAILER TAIL LAMP OPERATION
The trailer tail lamps are controlled by the trailer tow relay 1.
With the lighting switch in the parking and tail lamp ON (1ST) position, AUTO position (and the auto light sys-
tem is activated) or headlamp ON (2ND) position, power is supplied
through the tail lamp relay, located in the IPDM E/R
through 10A fuse (No. 36, located in the IPDM E/R)
through IPDM E/R terminal 49
to trailer tow relay 1 terminal 1.
When energized, trailer tow relay 1 supplies tail lamp power to trailer connector terminal 6.
TRAILER BRAKE, TURN SIGNAL AND HAZARD LAMP OPERATION
The trailer brake, turn signal and hazard lamps are controlled by the BCM through trailer turn relays (LH and
RH). When the brake pedal is depressed, the BCM receives stop lamp switch signal through CAN communi-
cation. If the brake pedal is depressed or either turn signal or the hazard lamps are turned on, the BCM sup-
plies voltage to the trailer turn relays (LH and RH) to make them cycle on and off.
Trailer turn relay LH output is supplied
through BCM terminal 52
to trailer turn relay LH terminal 1.
Trailer turn relay RH output is supplied
through BCM terminal 51
to trailer turn relay RH terminal 1.
Left trailer brake, turn signal and hazard lamp output is supplied
through trailer turn relay LH terminal 3
to trailer connector terminal 1.
Right trailer brake, turn signal and hazard lamp output is supplied
through trailer turn relay RH terminal 3
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LT-128
TRAILER TOW
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to trailer connector terminal 4.
TRAILER BRAKE OPERATION
The trailer brake is controlled by the electric brake. The electric brake receives stop lamp switch signal at elec-
tric brake (pre-wiring) terminal 2 when the brake pedal is depressed.
When the brake pedal is depressed, power is supplied by the electric brake
through electric brake (pre-wiring) terminal 3
to trailer connector terminal 3.
TRAILER POWER SUPPLY OPERATION
The trailer power supply is controlled by the trailer tow relay 2.
When the ignition switch is in the ON or START position, power is supplied
through 10A fuse (No. 51, located in the IPDM E/R)
through IPDM E/R terminal 16
to trailer tow relay 2 terminal 1.
When energized, the trailer tow relay 2 supplies power
through trailer tow relay 2 terminals 5 and 7
to trailer connector terminal 5.
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INTERIOR ROOM LAMPLT-135
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System DescriptionEKS00BB6
When room lamp and personal lamp switch is in DOOR position, room lamp and personal lamp ON/OFF is
controlled by timer according to signals from switches including key switch and key lock solenoid, front door
switch LH, unlock signal from keyfob, door lock and unlock switch, front door lock assembly LH (key cylinder
switch), ignition switch, and glass hatch ajar switch.
When room lamp and personal lamp turns ON, there is a gradual brightening over 1 second. When room lamp
and personal lamp turns OFF, there is a gradual dimming over 1 second.
The room lamp and personal lamp timer is controlled by the BCM (body control module).
Room lamp and personal lamp timer control settings can be changed with CONSULT-II.
Ignition keyhole illumination turns ON when front door LH is opened (door switch ON) or key is removed from
key cylinder. Illumination turns OFF when front door LH is closed (door switch OFF).
Step and foot lamps turn ON when front or rear doors are opened (door switch ON). Lamps turn OFF when
front and rear doors are closed (all door switches OFF).
POWER SUPPLY AND GROUND
Power is supplied at all times
through 10A fuse [No. 19, located in the fuse block (J/B)]
to key switch and key lock solenoid terminal 3, and
through 15A fuse [No. 22, located in the fuse block (J/B)]
to BCM terminal 57, and
through 50A fusible link (letter f , located in the fuse and fusible link box)
to BCM terminal 70.
When the key is inserted in key switch and key lock solenoid, power is supplied
through the key switch and key lock solenoid terminal 4
to BCM terminal 37.
With the ignition switch in the ON or START position, power is supplied
through 10A fuse (No. 59, located in the fuse and relay box)
to BCM terminal 38.
Ground is supplied
to BCM terminal 67
through grounds M57, M61 and M79.
When the front door LH is opened, ground is supplied
to BCM terminal 47
through case ground of front door switch LH.
When the front door RH is opened, ground is supplied
to BCM terminal 12
through case ground of front door switch RH.
When the rear door LH is opened, ground is supplied
to BCM terminal 48
through case ground of rear door switch LH.
When the rear door RH is opened, ground is supplied
to BCM terminal 13
through case ground of rear door switch RH.
When the liftgate is opened, ground is supplied
to BCM terminal 43
through back door latch (door ajar switch) terminal 7
through back door latch (door ajar switch) terminal 8
through grounds B7 and B19.
When the glass hatch is opened, ground is supplied
to BCM terminal 42
through case ground of glass hatch ajar switch.
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![INFINITI QX56 2006 Factory Service Manual INTERIOR ROOM LAMPLT-137
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through 10A fuse [No. 19, located in the fuse block (J/B)]
to key switch and key lock solenoid terminal 3.
Key is](/img/42/57028/w960_57028-2543.png "INFINITI QX56 2006 Factory Service Manual INTERIOR ROOM LAMPLT-137
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through 10A fuse [No. 19, located in the fuse block (J/B)]
to key switch and key lock solenoid terminal 3.
Key is")
INTERIOR ROOM LAMPLT-137
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through 10A fuse [No. 19, located in the fuse block (J/B)]
to key switch and key lock solenoid terminal 3.
Key is removed from ignition key cylinder (key switch OFF), power will not be supplied to BCM terminal 37.
Serial data is supplied
to BCM terminal 22
through main power window and door lock/unlock switch terminal 14.
At the time that front door LH is opened, BCM detects that front door LH is unlocked. It determines that interior
room lamp and map lamp timer operation conditions are met, and turns the interior room lamps ON for 30 sec-
onds.
Key is in ignition key cylinder (key switch ON), power is supplied
through key switch and key lock solenoid terminal 4
to BCM terminal 37.
When key is removed from key switch and key lock solenoid (key switch OFF), power supply to BCM terminal
37 is terminated. BCM detects that key has been removed, determines that interior room lamp and map lamp
timer conditions are met, and turns the interior room lamps ON for 30 seconds.
When front door LH opens → closes, and the key is not inserted in the key switch and key lock solenoid (key
switch OFF), BCM terminal 47 changes between 0V (door open) → 12V (door closed). The BCM determines
that conditions for interior room lamp operation are met and turns the interior room lamp ON for 30 seconds.
Timer control is canceled under the following conditions.
Front door LH is locked [when locked by keyfob, main power window and door lock/unlock switch, or front
door lock assembly LH (key cylinder switch)]
Front door LH is opened (front door switch LH turns ON)
Ignition switch ON.
INTERIOR LAMP BATTERY SAVER CONTROL
If interior lamp is left “ON”, it will not be turned off even when door is closed.
BCM turns off interior lamp automatically to save battery 30 minutes after ignition switch is turned off.
BCM controls interior lamps listed below:
Va n i t y l a m p
Room/map lamp
Cargo lamp
Personal lamp
St ep la m ps
Puddle lamps
Foot lamps
Ignition keyhole illumination
After lamps turn OFF by the battery saver system, the lamps illuminate again when
signal received from keyfob, or main power window and door lock/unlock switch or front door lock assem-
bly LH (key cylinder switch) is locked or unlocked
door is opened or closed
key is removed from ignition key cylinder (key switch OFF) or inserted in ignition key cylinder (key switch
ON).
Interior lamp battery saver control period can be changed by the function setting of CONSULT-II.
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LT-148
INTERIOR ROOM LAMP
Revision: November 20092006 QX56
How to Proceed With Trouble DiagnosisEKS00BBA
1. Confirm the symptom or customer complaint.
2. Understand operation description and function description. Refer to LT- 1 3 5 , "
System Description" .
3. Carry out the Preliminary Check. Refer to LT- 1 4 8 , "
Preliminary Check" .
4. Check symptom and repair or replace the cause of malfunction.
5. Does the interior room lamp operate normally? If YES: GO TO 6. If NO: GO TO 4.
6. Inspection End.
Preliminary CheckEKS00BBB
INSPECTION FOR POWER SUPPLY AND GROUND CIRCUIT
1. CHECK FUSES OR FUSIBLE LINK
Check for blown BCM fuses or fusible link.
Refer to LT- 1 4 0 , "
Wiring Diagram — INT/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" .
2. CHECK POWER SUPPLY CIRCUIT
1. Disconnect BCM connectors.
2. Check voltage between BCM connector and ground.
OK or NG
OK >> GO TO 3.
NG >> Check harness for open between BCM and fuse or fusible link.
3. CHECK GROUND CIRCUIT
Check continuity between BCM and ground.
OK or NG
OK >> Inspection End.
NG >> Check harness ground circuit.
Unit Power sourceFuse and fusible link No.
BCM Battery f
22
Ignition switch ON or START position 59
TerminalsIgnition switch position
(+) (– )O FF O N
Connector Terminal
M20 57
Ground Battery voltage Battery voltage
70 Battery voltage Battery voltage
M18 38 0V Battery voltage
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Terminals
Continuity
Connector Terminal
M20 67Ground Yes
LIIA0915E
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ILLUMINATIONLT-157
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ILLUMINATIONPFP:27545
Component Parts and Harness Connector LocationEKS00BBI
System DescriptionEKS00BBJ
Control of the illumination lamps operation is dependent upon the position of the lighting switch (combination
switch). When the lighting switch is placed in the 1ST or 2ND position (or if the auto light system is activated)
the BCM (body control module) receives input signal requesting the illumination lamps to illuminate. This input
signal 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 tail lamp relay coil. This
relay, when energized, directs power to the illumination lamps, which then illuminate.
Power is supplied at all times
to ignition relay, located in the IPDM E/R, and
to tail lamp relay, located in the IPDM E/R, and
through 50A fusible link (letter f , located in the fuse and fusible link box)
to BCM terminal 70, 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 fuse block (J/B)]
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ILLUMINATION
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to combination meter terminal 8
With the ignition switch in the ON or START position, power is supplied
to ignition relay, located in the IPDM E/R, and
through 10A fuse (No. 59, located in the fuse and relay box)
to BCM terminal 38, and
through 10A fuse [No. 14, located in the fuse block (J/B)]
to combination meter terminal 24.
Ground is supplied
to BCM terminal 67 and
to combination meter terminal 17
through grounds M57, M61 and M79, and
to IPDM E/R terminals 38 and 59
through grounds E9, E15 and E24.
ILLUMINATION OPERATION BY LIGHTING SWITCH
With the lighting switch in the 1ST or 2ND position (or if the auto light system is activated), the BCM receives
input signal requesting the illumination lamps to illuminate. This input signal is communicated to the IPDM E/R
across the CAN communication lines. The CPU of the IPDM E/R controls the tail lamp relay coil, which, when
energized, directs power
through 10A fuse (No. 36, located in the IPDM E/R)
through IPDM E/R terminal 49
to illumination control switch terminal 1
to power liftgate switch terminal 3
to front room/map lamp assembly (console box illumination) terminal 7
to hazard switch terminal 3
to rear sonar system OFF switch terminal 3
to glove box lamp terminal 1
to display control unit terminal 14
to 4WD shift switch terminal 7 (with 4-wheel drive)
to front air control terminal 23
to rear power vent window switch terminal 5
to DVD player terminal 12 (with DVD entertainment system)
to NAVI control unit terminal 61
to pedal adjusting switch terminal 5
to electric brake (pre-wiring) terminal 4 (with trailer tow)
to front and rear heated seat switch LH and RH terminal 5
to A/T device terminal 11
to VDC OFF switch terminal 3
to tow mode switch terminal 3
to headlamp aiming switch terminal 3
to clock terminal 3, and
through 10A fuse (No. 37, located in the IPDM E/R)
through IPDM E/R terminal 57
to AV switch terminal 3
to audio unit terminal 8
to rear air control terminal 1 and
to rear audio remote control unit terminal 6.
Illumination is controlled
through illumination control switch terminal 2
to power liftgate switch terminal 4
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PG-1
POWER SUPPLY, GROUND & CIRCUIT ELEMENTS
K ELECTRICAL
CONTENTS
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PRECAUTIONS .....................................................
..... 3
Precautions for Supplemental Restraint System
(SRS) “AIR BAG” and “SEAT BELT PRE-TEN-
SIONER” ............................................................. ..... 3
POWER SUPPLY ROUTING CIRCUIT ................. ..... 4
Schematic ........................................................... ..... 4
Wiring Diagram — POWER — ................................. 6 BATTERY POWER SUPPLY — IGNITION SW.
IN ANY POSITION ................................................ 6
ACCESSORY POWER SUPPLY — IGNITION
SW. IN ACC OR ON ............................................. 11
IGNITION POWER SUPPLY — IGNITION SW.
IN ON ............................................................... ... 12
IGNITION POWER SUPPLY — IGNITION SW.
IN ON AND/OR START .................................... ... 13
Fuse .................................................................... ... 17
Fusible Link ......................................................... ... 17
Circuit Breaker (Built Into BCM) .......................... ... 17
IPDM E/R (INTELLIGENT POWER DISTRIBUTION
MODULE ENGINE ROOM) ................................... ... 18
System Description ............................................. ... 18
SYSTEMS CONTROLLED BY IPDM E/R ........ ... 18
CAN COMMUNICATION LINE CONTROL ...... ... 18
IPDM E/R STATUS CONTROL ........................ ... 19
CAN Communication System Description ........... ... 19
Function of Detecting Ignition Relay Malfunction ... 19
CONSULT-II Function IPDM E/R ......................... ... 20
CONSULT-II BASIC OPERATION ................... ... 20
SELF-DIAGNOSTIC RESULTS ....................... ... 21
DATA MONITOR .............................................. ... 21
ACTIVE TEST .................................................. ... 23
Auto Active Test .................................................. ... 24
DESCRIPTION ................................................. ... 24
OPERATION PROCEDURE ............................ ... 24
INSPECTION IN AUTO ACTIVE TEST MODE ... 24
Schematic ........................................................... ... 26
IPDM E/R Terminal Arrangement ........................ ... 27
IPDM E/R Power/Ground Circuit Inspection ....... ... 28Inspection with CONSULT-II (Self-Diagnosis) .....
... 29
Removal and Installation of IPDM E/R ................ ... 30
REMOVAL ........................................................ ... 30
INSTALLATION ................................................ ... 30
GROUND CIRCUIT ................................................ ... 31
Ground Distribution ................................................. 31 MAIN HARNESS ................................................. 31
ENGINE ROOM HARNESS ............................. ... 34
ENGINE CONTROL HARNESS ....................... ... 37
BODY HARNESS ............................................. ... 38
BODY NO. 2 HARNESS .................................. ... 39
BACK DOOR NO. 2 RH HARNESS ................. ... 40
HARNESS .............................................................. ... 41
Harness Layout ...................................................... 41 HOW TO READ HARNESS LAYOUT .............. ... 41
OUTLINE .......................................................... ... 42
MAIN HARNESS ................................................. 43
ENGINE ROOM HARNESS (LH VIEW) ........... ... 45
ENGINE ROOM HARNESS (RH VIEW) .......... ... 48
ENGINE CONTROL HARNESS ....................... ... 50
CHASSIS HARNESS ....................................... ... 52
BODY HARNESS ............................................. ... 54
BODY NO. 2 HARNESS .................................. ... 56
ROOM LAMP HARNESS ................................. ... 58
FRONT DOOR LH HARNESS ......................... ... 59
FRONT DOOR RH HARNESS ......................... ... 59
REAR DOOR LH HARNESS ............................ ... 60
REAR DOOR RH HARNESS ........................... ... 60
BACK DOOR HARNESS ................................. ... 61
Wiring Diagram Codes (Cell Codes) ................... ... 62
ELECTRICAL UNITS LOCATION ......................... ... 65
Electrical Units Location ...................................... ... 65
ENGINE COMPARTMENT ............................... ... 65
PASSENGER COMPARTMENT ...................... ... 66
HARNESS CONNECTOR ...................................... ... 68
Description ........................................................... ... 68
HARNESS CONNECTOR (TAB-LOCKING
TYPE) ............................................................... ... 68
HARNESS CONNECTOR (SLIDE-LOCKING
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TYPE) ...............................................................
... 69
HARNESS CONNECTOR (DIRECT-CONNECT
SRS COMPONENT TYPE) .............................. ... 70
ELECTRICAL UNITS ............................................. ... 71
Terminal Arrangement ......................................... ... 71
STANDARDIZED RELAY ....................................... ... 72
Description ........................................................... ... 72
NORMAL OPEN, NORMAL CLOSED AND
MIXED TYPE RELAYS ..................................... ... 72
TYPE OF STANDARDIZED RELAYS ............... ... 72SUPER MULTIPLE JUNCTION (SMJ) ...................
... 74
Terminal Arrangement .......................................... ... 74
FUSE BLOCK-JUNCTION BOX (J/B) ................... ... 76
Terminal Arrangement .......................................... ... 76
FUSE AND FUSIBLE LINK BOX ........................... ... 77
Terminal Arrangement .......................................... ... 77
FUSE AND RELAY BOX ........................................ ... 78
Terminal Arrangement .......................................... ... 78