Service Manuals, User Guides, Schematic Diagrams or docs for : . Car Manuals Infiniti QX56 JA60 2004-2005 Approved 2005_QX56 lt

<< Back | Home

Most service manuals and schematics are PDF files, so You will need Adobre Acrobat Reader to view : Acrobat Download Some of the files are DjVu format. Readers and resources available here : DjVu Resources
For the compressed files, most common are zip and rar. Please, extract files with Your favorite compression software ( WinZip, WinRAR ... ) before viewing. If a document has multiple parts, You should download all, before extracting.
Good luck. Repair on Your own risk. Make sure You know what You are doing.

Image preview - the first page of the document

>> Download lt documenatation <<

Text preview - extract from the document

K ELECTRICAL

SECTION
LIGHTING SYSTEM
LT B

E
CONTENTS
PRECAUTIONS ......................................................... 4 . LOW BEAM AND HIGH BEAM .......................... 30 . F
Precautions for Supplemental Restraint System Bulb Replacement ................................................. 31 .
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN- HEADLAMP (OUTER SIDE), FOR LOW BEAM... 31
SIONER" ................................................................. 4
. HEADLAMP (INNER SIDE), FOR HIGH BEAM... 31 G
General precautions for service operations ............ 4 . FRONT PARKING LAMP (INNER OR OUTER)... 31
Wiring Diagrams and Trouble Diagnosis ................. 4 . FRONT SIDE MARKER LAMP .......................... 31 .
HEADLAMP (FOR USA) ........................................... 6 . Removal and Installation ....................................... 32 .
H
Component Parts and Harness Connector Location 6 ..... REMOVAL .......................................................... 32.
System Description ................................................. 6 . INSTALLATION .................................................. 32 .
OUTLINE .............................................................. 6
. Disassembly and Assembly ................................... 32 .
XENON HEADLAMP ............................................ 7 . HEADLAMP (FOR CANADA) - DAYTIME LIGHT I
BATTERY SAVER CONTROL ............................. 8 . SYSTEM - ................................................................. 33
.
AUTO LIGHT OPERATION .................................. 8 . Component Parts and Harness Connector Location 33 ...
VEHICLE SECURITY SYSTEM (PANIC ALARM) 8 ..... System Description ................................................ 34 . J
CAN Communication System Description ............... 8 . OUTLINE ............................................................ 34
.
Schematic ............................................................... 9
. DAYTIME LIGHT OPERATION .......................... 34 .
Wiring Diagram -- H/LAMP -- .............................. 10 . COMBINATION SWITCH READING FUNCTION 34 ...
LT
Terminals and Reference Values for BCM ............ 14 . AUTO LIGHT OPERATION ................................ 35 .
Terminals and Reference Values for IPDM E/R .... 15 . CAN Communication System Description ............. 35 .
How to Proceed With Trouble Diagnosis ............... 15 . Schematic .............................................................. 36
.
Preliminary Check ................................................. 15 . Wiring Diagram -- DTRL -- .................................. 37 . L
CHECK POWER SUPPLY AND GROUND CIR- Terminals and Reference Values for BCM ............. 41 .
CUIT ................................................................... 15
. How to Proceed With Trouble Diagnosis ............... 42 .
CONSULT-II Function (BCM) ................................ 17 . Preliminary Check ................................................. 42 . M
CONSULT-II OPERATION ................................. 17 . CHECK BCM CONFIGURATION ....................... 42 .
WORK SUPPORT .............................................. 18 . INSPECTION FOR POWER SUPPLY AND
DATA MONITOR ................................................ 18 . GROUND CIRCUIT ............................................ 42 .
ACTIVE TEST .................................................... 19 . INSPECTION PARKING BRAKE SWITCH CIR-
SELF-DIAGNOSTIC RESULTS ......................... 19 . CUIT ................................................................... 43
.
CONSULT-II Function (IPDM E/R) ........................ 20 . CONSULT-II Functions .......................................... 44 .
CONSULT-II OPERATION ................................. 20 . Daytime Light Control Does Not Operate Properly
DATA MONITOR ................................................ 21 . (Normal Headlamps Operate Properly) ................. 44 .
ACTIVE TEST .................................................... 21 . Aiming Adjustment ................................................. 46 .
Headlamp HI Does Not Illuminate (Both Sides) .... 22 . Bulb Replacement ................................................. 46 .
Headlamp HI Does Not Illuminate (One Side) ...... 24 . Removal and Installation ....................................... 46 .
High Beam Indicator Lamp Does Not Illuminate ... 25 Disassembly and Assembly ................................... 46 .
Headlamp LO Does Not Illuminate (Both Sides) ... 25 AUTO LIGHT SYSTEM ............................................ 47 .
Headlamp LO Does Not Illuminate (One Side) ..... 27 . Component Parts and Harness Connector Location 47 ...
Headlamps Do Not Turn OFF ............................... 28 . System Description ................................................ 48 .
Aiming Adjustment ................................................ 30 . OUTLINE ............................................................ 48
.

Revision: October 2005 LT-1 2005 QX56
COMBINATION SWITCH READING FUNCTION 48 ... Component Parts and Harness Connector Location ...80
EXTERIOR LAMP BATTERY SAVER CONTROL 48 ... System Description ................................................80 .
DELAY TIMER FUNCTION ................................ 48 . OUTLINE ............................................................80.
CAN Communication System Description ............. 48 . TURN SIGNAL OPERATION ..............................80 .
Major Components and Functions ......................... 48 . HAZARD LAMP OPERATION ............................81 .
Schematic .............................................................. 49
. REMOTE KEYLESS ENTRY SYSTEM OPERA-
Wiring Diagram -- AUTO/L -- ............................... 50 . TION ...................................................................82
.
Terminals and Reference Values for BCM ............. 53 . COMBINATION SWITCH READING FUNCTION ...82
Terminals and Reference Values for IPDM E/R ..... 54 . CAN Communication System Description .............82 .
How to Proceed With Trouble Diagnosis ............... 55 . Wiring Diagram -- TURN -- ..................................83 .
Preliminary Check ................................................. 55 . Terminals and Reference Values for BCM .............85 .
SETTING CHANGE FUNCTIONS ...................... 55 . How to Proceed With Trouble Diagnosis ...............86 .
CHECK POWER SUPPLY AND GROUND CIR- Preliminary Check ..................................................87 .
CUIT ................................................................... 55
. CHECK POWER SUPPLY AND GROUND CIR-
CONSULT-II Function (BCM) ................................. 57 . CUIT ....................................................................87
.
CONSULT-II OPERATION .................................. 57 . CONSULT-II Function (BCM) .................................88 .
WORK SUPPORT .............................................. 58 . CONSULT-II OPERATION ..................................88 .
DATA MONITOR ................................................. 58 . DATA MONITOR .................................................89 .
ACTIVE TEST .................................................... 59 . ACTIVE TEST .....................................................89 .
SELF-DIAGNOSTIC RESULTS .......................... 59 . Turn Signal Lamp Does Not Operate .....................90 .
CONSULT-II Function (IPDM E/R) ......................... 60 . Rear Turn Signal Lamp Does Not Operate ............91 .
CONSULT-II OPERATION .................................. 60 . Hazard Warning Lamp Does Not Operate But Turn
DATA MONITOR ................................................. 61 . Signal Lamps Operate ...........................................92 .
ACTIVE TEST .................................................... 61 . Turn Signal Indicator Lamp Does Not Operate ......93 .
Trouble Diagnosis Chart by Symptom ................... 62 . Bulb Replacement (Front Turn Signal Lamp) .........94 .
Lighting Switch Inspection ..................................... 62 . Bulb Replacement (Rear Turn Signal Lamp) .........94 .
Optical Sensor System Inspection ......................... 63 . Removal and Installation of Front Turn Signal Lamp ...94
Removal and Installation of Optical Sensor ........... 64 . Removal and Installation of Rear Turn Signal Lamp...94
REMOVAL .......................................................... 64 . LIGHTING AND TURN SIGNAL SWITCH ...............95 .
INSTALLATION ................................................... 64 . Removal and Installation ........................................95 .
HEADLAMP AIMING CONTROL ............................. 65 . REMOVAL ...........................................................95 .
System Description ................................................ 65 . INSTALLATION ...................................................95 .
Wiring Diagram -- H/AIM -- .................................. 66 . HAZARD SWITCH ....................................................96 .
Removal and Installation of Headlamp Aiming Removal and Installation ........................................96 .
Switch .................................................................... 68
. REMOVAL ...........................................................96 .
REMOVAL .......................................................... 68 . INSTALLATION ...................................................96 .
INSTALLATION .................................................. 68 . COMBINATION SWITCH .........................................97 .
Switch Circuit Inspection ....................................... 68 . Wiring Diagram -- COMBSW -- ...........................97 .
FRONT FOG LAMP ................................................. 69 . Combination Switch Reading Function ..................98 .
Component Parts and Harness Connector Location 69 ... CONSULT-II Function (BCM) .................................98 .
System Description ................................................ 69 . CONSULT-II OPERATION ..................................98 .
OUTLINE ............................................................ 69
. DATA MONITOR .................................................99 .
COMBINATION SWITCH READING FUNCTION 70 ... Combination Switch Inspection ............................ 100 .
EXTERIOR LAMP BATTERY SAVER CONTROL 70 ... Removal and Installation ...................................... 102 .
CAN Communication System Description ............. 70 . Switch Circuit Inspection ...................................... 102 .
Wiring Diagram -- F/FOG -- ................................. 71 . STOP LAMP ........................................................... 103 .
Terminals and Reference Values for BCM ............. 73 . System Description .............................................. 103 .
Terminals and Reference Values for IPDM E/R ..... 74 . Wiring Diagram -- STOP/L -- ............................. 104 .
How to Proceed With Trouble Diagnosis ............... 74 . High-Mounted Stop Lamp .................................... 105 .
Preliminary Check ................................................. 75 . BULB REPLACEMENT ..................................... 105 .
CHECK POWER SUPPLY AND GROUND CIR- REMOVAL AND INSTALLATION ...................... 105 .
CUIT ................................................................... 75
. Stop Lamp ............................................................ 105
.
CONSULT-II Functions .......................................... 76 . BULB REPLACEMENT ..................................... 105 .
Front Fog Lamps Do Not Illuminate (Both Sides) ... 76 REMOVAL AND INSTALLATION ...................... 105 .
Front Fog Lamp Does Not Illuminate (One Side) ... 77 BACK-UP LAMP .................................................... 106 .
Aiming Adjustment ................................................. 78 . Wiring Diagram -- BACK/L -- ............................. 106 .
Bulb Replacement ................................................. 79 . Bulb Replacement ................................................ 107 .
Removal and Installation ....................................... 79 . Removal and Installation ...................................... 107 .
TURN SIGNAL AND HAZARD WARNING LAMPS... 80 PARKING, LICENSE PLATE AND TAIL LAMPS ... 108 .

Revision: October 2005 LT-2 2005 QX56
Component Parts and Harness Connector Location 108 . System Description .............................................. 130 .
System Description ............................................. 108 . POWER SUPPLY AND GROUND ................... 130 . A
OPERATION BY LIGHTING SWITCH ............. 109 . SWITCH OPERATION ..................................... 131 .
COMBINATION SWITCH READING FUNCTION 109 . ROOM LAMP TIMER OPERATION ................. 131 .
EXTERIOR LAMP BATTERY SAVER CONTROL 109 . INTERIOR LAMP BATTERY SAVER CONTROL 132 . B
CAN Communication System Description ........... 109 . Schematic ............................................................ 133
.
Schematic ............................................................110 . Wiring Diagram -- INT/L -- ................................. 135 .
Wiring Diagram -- TAIL/L -- ................................ 111 . Terminals and Reference Values for BCM ........... 142 .
Terminals and Reference Values for BCM ...........114 . How to Proceed With Trouble Diagnosis ............. 143 . C
Terminals and Reference Values for IPDM E/R ...115 . Preliminary Check ............................................... 143 .
How to Proceed With Trouble Diagnosis ..............115 . INSPECTION FOR POWER SUPPLY AND
Preliminary Check ................................................115 . GROUND CIRCUIT .......................................... 143 . D
CHECK POWER SUPPLY AND GROUND CIR- CONSULT-II Function (BCM) .............................. 144 .
CUIT ..................................................................115
. CONSULT-II OPERATION ................................ 144 .
CONSULT-II Functions .........................................116 . WORK SUPPORT ............................................ 145 . E
Parking, License Plate and/or Tail Lamps Do Not DATA MONITOR .............................................. 145 .
Illuminate ..............................................................117. ACTIVE TEST .................................................. 146 .
Parking, License Plate and Tail Lamps Do Not Turn Room/Map Lamp Control Does Not Operate ...... 146 .
OFF (After Approx. 10 Minutes) .......................... 120 . Personal Lamp Control Does Not Operate (Room/ F
Front Parking Lamp ............................................. 121 . Map Lamps Operate) ........................................... 148 .
BULB REPLACEMENT .................................... 121 . All Step/Foot/Puddle Lamps Do Not Operate ...... 149 .
Tail Lamp ............................................................. 121 . All Interior Room Lamps Do Not Operate ............ 150 . G
BULB REPLACEMENT .................................... 121 . Ignition Keyhole Illumination Control Does Not
License Plate Lamp ............................................. 121 . Operate ................................................................ 150
.
BULB REPLACEMENT .................................... 121 . ILLUMINATION ...................................................... 152 . H
REAR COMBINATION LAMP ............................... 122 . Component Parts and Harness Connector Location 152 .
Bulb Replacement (Turn Signal) ......................... 122 . System Description .............................................. 152 .
Removal and Installation ..................................... 122 . ILLUMINATION OPERATION BY LIGHTING
I
......................................................................... 122
. SWITCH ........................................................... 153.
TRAILER TOW ...................................................... 123 . EXTERIOR LAMP BATTERY SAVER CONTROL 154 .
Component Parts and Harness Connector Location 123 . CAN Communication System Description ........... 154 .
System Description ............................................. 123 . Schematic ............................................................ 155
. J
TRAILER TAIL LAMP OPERATION ................. 124 . Wiring Diagram -- ILL -- ..................................... 158 .
TRAILER TURN SIGNAL AND HAZARD LAMP Removal and Installation of Illumination Control
OPERATION .................................................... 124 . Switch .................................................................. 169
. LT
TRAILER STOP LAMP OPERATION ............... 124 . REMOVAL ........................................................ 169 .
TRAILER POWER SUPPLY OPERATION ....... 124 . INSTALLATION ................................................ 169 .
Schematic ........................................................... 125 . BULB SPECIFICATIONS ....................................... 170 .
L
Wiring Diagram -- T/TOW -- .............................. 126 . Headlamp ............................................................ 170
.
INTERIOR ROOM LAMP ....................................... 129 . Exterior Lamp ...................................................... 170.
Component Parts and Harness Connector Location 129 . Interior Lamp/Illumination .................................... 170 .
M

Revision: October 2005 LT-3 2005 QX56
PRECAUTIONS

PRECAUTIONS PFP:00011

Precautions for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT
BELT PRE-TENSIONER" EKS00B7P

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:
G 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.
G 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.
G 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.
General precautions for service operations EKS00B7Q

G Never work with wet hands.
G Xenon headlamp includes high voltage generating part. Be sure
to disconnect battery negative cable (negative terminal) or
power fuse before removing, installing, or touching the xenon
headlamp (including lamp bulb).
G Turn the lighting switch OFF before disconnecting and connect-
ing the connector.
G When turning the xenon headlamp on and while it is illuminated,
never touch the harness, bulb, and socket of the headlamp.
G When checking the headlamp on/off operation, check it on vehi- WKIA0460E
cle and with the power connected to the vehicle-side connector.
G Do not touch the headlamp bulb glass surface with bare hands or allow oil or grease to get on it. Do not
touch the headlamp bulb just after the headlamp is turned off, because it is very hot.
G Install the xenon headlamp bulb socket correctly. If it is installed
improperly, high-voltage leak or corona discharge may occur
that can melt the bulb, connector, and housing. Do not illuminate
the xenon headlamp bulb out of the headlamp housing. Doing
so can cause fire and harm your eyes.
G When the bulb has burned out, wrap it in a thick vinyl bag and
discard. Do not break the bulb.
G Leaving the bulb removed from the headlamp housing for a long
period of time can deteriorate the performance of the lens and
reflector (dirt, clouding). Always prepare a new bulb and have it
on hand when replacing the bulb. EL-3422D

G Do not use organic solvent (paint thinner or gasoline) to clean
lamps and to remove old sealant.
Wiring Diagrams and Trouble Diagnosis EKS00B7R

When you read wiring diagrams, refer to the following:
G Refer to GI-15, "How to Read Wiring Diagrams" in GI section.
G Refer to PG-4, "POWER SUPPLY ROUTING CIRCUIT" for power distribution in PG section.
When you perform trouble diagnosis, refer to the following:
G Refer to GI-11, "HOW TO FOLLOW TEST GROUPS IN TROUBLE DIAGNOSES" in GI section.

Revision: October 2005 LT-4 2005 QX56
PRECAUTIONS

G Refer to GI-27, "How to Perform Efficient Diagnosis for an Electrical Incident" in GI section.
A

Revision: October 2005 LT-5 2005 QX56
HEADLAMP (FOR USA)

HEADLAMP (FOR USA) PFP:26010

Component Parts and Harness Connector Location EKS00B7S

WKIA3463E

System Description EKS00B7T

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
G to ignition relay, located in the IPDM E/R, and
G to headlamp high relay, located in the IPDM E/R, and
G to headlamp low relay, located in the IPDM E/R, and
G through 20A fuse (No. 53, located in the IPDM E/R)
G to CPU of the IPDM E/R, and
G through 50A fusible link (letter f , located in the fuse and fusible link box)
Revision: October 2005 LT-6 2005 QX56
HEADLAMP (FOR USA)

G to BCM terminal 70.
With the ignition switch in the ON or START position, power is supplied A
G to ignition relay, located in the IPDM E/R, and
G through 10A fuse (No. 59, located in the fuse and relay box)
B
G to BCM terminal 38.
Ground is supplied
G to BCM terminal 67 C
G through grounds M57, M61 and M79, and
G to IPDM E/R terminals 38 and 59
G through grounds E9, E15 and E24. D
Low Beam Operation
With the lighting switch in 2ND position, the BCM receives input requesting the headlamps to illuminate. This
input is communicated to the IPDM E/R across the CAN communication lines. The CPU of the IPDM E/R con- E
trols the headlamp low relay coil. When energized, this relay directs power
G through 15A fuse (No. 41, located in the IPDM E/R)
G through IPDM E/R terminal 54 F
G to front combination lamp RH terminal 5, and
G through 15A fuse (No. 40, located in the IPDM E/R)
G
G through IPDM E/R terminal 52
G to front combination lamp LH terminal 5.
Ground is supplied H
G to front combination lamp LH and RH terminal 1
G through grounds E9, E15 and E24.
With power and ground supplied, low beam headlamps illuminate. I
High Beam Operation/Flash-to-Pass Operation
With the lighting switch in 2ND position and placed in HIGH or PASS position, the BCM receives input request-
J
ing the headlamp high beams to illuminate. This input is communicated to the IPDM E/R across the CAN com-
munication lines. The CPU of the combination meter controls the ON/OFF status of the HIGH BEAM indicator.
The CPU of the IPDM E/R controls the headlamp high relay coil. When energized, this relay directs power
G through 10A fuse (No. 34, located in the IPDM E/R) LT
G through IPDM E/R terminal 56
G to front combination lamp RH terminal 6, and
L
G through 10A fuse (No. 35, located in the IPDM E/R)
G through IPDM E/R terminal 55
G to front combination lamp LH terminal 6. M
Ground is supplied
G to front combination lamp LH and RH terminal 2
G through grounds E9, E15 and E24.
With power and ground supplied, the high beam headlamps illuminate.
XENON HEADLAMP
Xenon type headlamp is adopted to the low beam headlamps. Xenon bulbs do not use a filament. Instead,
they produce light when a high voltage current is passed between two tungsten electrodes through a mixture
of xenon (an inert gas) and certain other metal halides. In addition to added lighting power, electronic control
of the power supply gives the headlamps stable quality and tone color.
Following are some of the many advantages of the xenon type headlamp.
G The light produced by the headlamps is a white color comparable to sunlight that is easy on the eyes.
G Light output is nearly double that of halogen headlamps, affording increased area of illumination.
G The light features a high relative spectral distribution at wavelengths to which the human eye is most sen-
sitive. This means that even in the rain, more light is reflected back from the road surface toward the vehi-
cle, for added visibility.

Revision: October 2005 LT-7 2005 QX56
HEADLAMP (FOR USA)

G Power consumption is approximately 25 percent less than halogen headlamps, reducing battery load.
BATTERY SAVER CONTROL
When the combination switch (lighting switch) is in the 2ND position (ON), and the ignition switch is turned
from ON or ACC to OFF, the battery saver control feature is activated.
Under this condition, the headlamps remain illuminated for 5 minutes, unless the combination switch (lighting
switch) position is changed. If the combination switch (lighting switch) position is changed, then the headlamps
are turned off.
AUTO LIGHT OPERATION
Refer to LT-48, "System Description" for auto light operation.
VEHICLE SECURITY SYSTEM (PANIC ALARM)
The vehicle security system (panic alarm) will flash the high beams if the system is triggered. Refer to BL-48,
"Panic Alarm Operation" .
CAN Communication System Description EKS00B7U

Refer to LAN-5, "CAN COMMUNICATION" .

Revision: October 2005 LT-8 2005 QX56
HEADLAMP (FOR USA)

Schematic EKS00B7V

WKWA1192E

Revision: October 2005 LT-9 2005 QX56
HEADLAMP (FOR USA)

Wiring Diagram -- H/LAMP -- EKS00B7W

WKWA2394E

Revision: October 2005 LT-10 2005 QX56
HEADLAMP (FOR USA)

WKWA2395E

Revision: October 2005 LT-11 2005 QX56
HEADLAMP (FOR USA)

WKWA2482E

Revision: October 2005 LT-12 2005 QX56
HEADLAMP (FOR USA)

WKWA2396E

Revision: October 2005 LT-13 2005 QX56
HEADLAMP (FOR USA)

Terminals and Reference Values for BCM EKS00B7X

Measuring condition
Terminal Wire Reference value
Signal name Ignition
No. color Operation or condition (Approx.)
switch

Lighting, turn, wiper OFF
2 SB Combination switch input 5 ON
Wiper dial position 4

SKIA5291E

Lighting, turn, wiper OFF
3 G/Y Combination switch input 4 ON
Wiper dial position 4

SKIA5292E

Lighting, turn, wiper OFF
4 Y Combination switch input 3 ON
Wiper dial position 4

SKIA5291E

5 G/B Combination switch input 2

Lighting, turn, wiper OFF
ON
6 V Combination switch input 1 Wiper dial position 4

SKIA5292E

Lighting, turn, wiper OFF
32 R/G Combination switch output 5 ON
Wiper dial position 4

SKIA5291E

Lighting, turn, wiper OFF
33 R/Y Combination switch output 4 ON
Wiper dial position 4

SKIA5292E

Lighting, turn, wiper OFF
34 L Combination switch output 3 ON
Wiper dial position 4

SKIA5291E

Revision: October 2005 LT-14 2005 QX56
HEADLAMP (FOR USA)

Measuring condition
Terminal Wire Reference value A
Signal name Ignition
No. color Operation or condition (Approx.)
switch
35 O/B Combination switch output 2
B

Lighting, turn, wiper OFF
ON
36 R/W Combination switch output 1 Wiper dial position 4
C

SKIA5292E

38 W/L Ignition switch (ON) ON -- Battery voltage D
39 L CAN-H -- -- --
40 P CAN-L -- -- --
E
67 B Ground ON -- 0V
70 W/B Battery power supply (fusible link) OFF -- Battery voltage

Terminals and Reference Values for IPDM E/R EKS00B7Y
F

Measuring condition
Terminal Wire Reference value
Signal name Ignition G
No. color Operation or condition (Approx.)
switch
38 B Ground ON -- 0V
39 L CAN-H -- -- -- H
40 P CAN-L -- -- --

Lighting switch OFF 0V
52 L Headlamp low (LH) ON
2ND position
I
ON Battery voltage

Lighting switch OFF 0V
54 R/Y Headlamp low (RH) ON
2ND position ON Battery voltage J
Lighting switch OFF 0V
55 G Headlamp high (LH) ON HIGH or PASS
position ON Battery voltage
LT
Lighting switch OFF 0V
56 L/W Headlamp high (RH) ON HIGH or PASS
position ON Battery voltage
L
59 B Ground ON -- 0V

How to Proceed With Trouble Diagnosis EKS00B7Z

M
1. Confirm the symptom or customer complaint.
2. Understand operation description and function description. Refer to LT-6, "System Description" .
3. Perform the Preliminary Check. Refer to LT-15, "Preliminary Check" .
4. Check symptom and repair or replace the cause of malfunction.
5. Does the headlamp operate normally? If YES: GO TO 6. If NO: GO TO 4.
6. Inspection End.
Preliminary Check EKS00B80

CHECK POWER SUPPLY AND GROUND CIRCUIT
1. CHECK FUSES OR FUSIBLE LINK
Check for blown fuses or fusible link.
Unit Power source Fuse and fusible link No.
Battery f
BCM
Ignition switch ON or START position 59

Revision: October 2005 LT-15 2005 QX56
HEADLAMP (FOR USA)

Unit Power source Fuse and fusible link No.
34
35
IPDM E/R Battery 40
41
53

Refer to LT-10, "Wiring Diagram -- H/LAMP --" .
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 harness connector and ground.

Terminals Ignition switch position
(+)
Terminal (

◦ Jabse Service Manual Search 2024 ◦ Jabse Pravopis ◦ onTap.bg ◦ Other service manual resources online : Fixya ◦ eServiceinfo