Service Manuals, User Guides, Schematic Diagrams or docs for : . Car Manuals Nissan Altima 2000-2005 Approved Nissan Altima 2005 LT
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K ELECTRICAL
A
SECTION
LIGHTING SYSTEM
LT B
C
D
E
CONTENTS
PRECAUTIONS ......................................................... 4 . Aiming Adjustment ................................................. 28 . F
Precautions for Supplemental Restraint System LOW BEAM AND HIGH BEAM .......................... 28 .
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN- Bulb Replacement ................................................. 29 .
SIONER" ................................................................. 4
. HEADLAMP (OUTER SIDE), FOR LOW BEAM G
General precautions for service operations ............ 4 . (XENON) ............................................................ 29 .
Wiring Diagrams and Trouble Diagnosis ................. 4 . HEADLAMP (OUTER SIDE), FOR LOW BEAM
HEADLAMP (FOR USA) ........................................... 6 . (HALOGEN) ....................................................... 29 .
H
Component Parts and Harness Connector Location 6 ..... HEADLAMP (INNER SIDE), FOR HIGH BEAM... 30
System Description ................................................. 6 . FRONT TURN SIGNAL LAMP ........................... 30 .
OUTLINE .............................................................. 6
. Removal and Installation ....................................... 30 .
BATTERY SAVER CONTROL ............................. 7 . Disassembly and Assembly ................................... 31 . I
AUTO LIGHT OPERATION .................................. 7 . DISASSEMBLY .................................................. 31 .
XENON HEADLAMP (IF EQUIPPED) ................. 7 . ASSEMBLY ........................................................ 32 .
CAN Communication System Description ............... 8 . HEADLAMP (FOR CANADA) - DAYTIME LIGHT J
Wiring Diagram -- H/LAMP -- ................................ 9 . SYSTEM - ................................................................. 33
.
HALOGEN ............................................................ 9
. Component Parts and Harness Connector Location 33 ...
XENON ...............................................................11
. System Description ................................................ 33 . LT
Terminals and Reference Values for BCM ............ 13 . HEADLAMP OPERATION .................................. 34 .
Terminals and Reference Values for IPDM E/R .... 14 . BATTERY SAVER CONTROL ............................ 35 .
How to Proceed With Trouble Diagnosis ............... 14 . AUTO LIGHT OPERATION ................................ 35 .
Preliminary Check ................................................. 14 . DAYTIME LIGHT OPERATION .......................... 35 . L
CHECK POWER SUPPLY AND GROUND CIR- XENON HEADLAMP (IF EQUIPPED) ................ 35 .
CUIT ................................................................... 14
. OPERATION ....................................................... 35 .
CONSULT-II Function (BCM) ................................ 16 . CAN Communication System Description ............. 36 . M
CONSULT-II OPERATION ................................. 16 . Schematic .............................................................. 37
.
DATA MONITOR ................................................ 17 . Wiring Diagram -- DTRL -- .................................. 38 .
ACTIVE TEST .................................................... 17 . How to Proceed With Trouble Diagnosis ............... 41 .
CONSULT-II Function (IPDM E/R) ........................ 18 . Preliminary Check ................................................. 41 .
CONSULT-II OPERATION ................................. 18 . CHECK BCM CONFIGURATION ....................... 41 .
DATA MONITOR ................................................ 19 . Trouble Diagnosis .................................................. 42 .
ACTIVE TEST .................................................... 19 . Removal and Installation of Daytime Light Control
Headlamp HI Does Not Illuminate (Both Sides) .... 20 . Unit ........................................................................ 43
.
Headlamp HI Does Not Illuminate (One Side) ...... 22 . AUTO LIGHT SYSTEM ............................................ 44 .
High-Beam Indicator Lamp Does Not Illuminate ... 23 Component Parts and Harness Connector Location 44 ...
Headlamp LO Does Not Illuminate (Both Sides) ... 23 System Description ................................................ 44 .
Headlamp LO Does Not Illuminate (One Side) ..... 25 . OUTLINE ............................................................ 44 .
Headlamps Do Not Turn OFF ............................... 26 . BATTERY SAVER CONTROL ............................ 45 .
One Xenon Headlamp Does Not Illuminate At Full SHUT OFF DELAY ............................................. 45 .
Brightness ............................................................. 27
. CAN Communication System Description ............. 45 .
One Xenon Headlamp Flickers ............................. 27 . Major Components and Functions ......................... 45 .
Revision: March 2005 LT-1 2005 Altima
Wiring Diagram -- AUTO/L -- ............................... 46 . CHECK POWER SUPPLY AND GROUND CIR-
Terminals and Reference Values for BCM ............. 48 . CUIT ....................................................................81
.
Terminals and Reference Values for IPDM E/R ..... 49 . CONSULT-II Function (BCM) .................................82 .
How to Proceed With Trouble Diagnosis ............... 50 . CONSULT-II OPERATION ..................................82 .
Preliminary Check ................................................. 50 . DATA MONITOR ................................................83 .
SETTING CHANGE FUNCTIONS ...................... 50 . ACTIVE TEST .....................................................83 .
CHECK BCM CONFIGURATION ....................... 50 . Turn Signal Lamp Does Not Operate .....................83 .
CHECK POWER SUPPLY AND GROUND CIR- Hazard Warning Lamp Does Not Operate But Turn
CUIT ................................................................... 50
. Signal Lamps Operate ...........................................85 .
CONSULT-II Function (BCM) ................................. 52 . Turn Signal Indicator Lamp Does Not Operate ......86 .
CONSULT-II OPERATION .................................. 52 . Bulb Replacement ..................................................86 .
WORK SUPPORT .............................................. 53 . FRONT TURN SIGNAL LAMP ............................86 .
DATA MONITOR ................................................. 53 . REAR TURN SIGNAL LAMP ..............................86 .
ACTIVE TEST .................................................... 54 . Removal and Installation ........................................86 .
CONSULT-II Function (IPDM E/R) ......................... 55 . FRONT TURN SIGNAL LAMP ............................86 .
CONSULT-II OPERATION .................................. 55 . REAR TURN SIGNAL LAMP ..............................86 .
DATA MONITOR ................................................. 56 . LIGHTING AND TURN SIGNAL SWITCH ...............87 .
ACTIVE TEST .................................................... 56 . Removal and Installation ........................................87 .
Trouble Diagnosis Chart by Symptom ................... 57 . Switch Circuit Inspection ........................................87 .
Lighting Switch Inspection ..................................... 57 . HAZARD SWITCH ....................................................88 .
Auto Light Sensor System Inspection .................... 58 . Removal and Installation ........................................88 .
FRONT FOG LAMP ................................................. 60 . COMBINATION SWITCH .........................................89 .
Component Parts and Harness Connector Location 60 ... Wiring Diagram -- COMBSW -- ...........................89 .
System Description ................................................ 60 . Combination Switch Reading Function ..................90 .
OUTLINE ............................................................ 60
. CONSULT-II Function (BCM) .................................90 .
BATTERY SAVER CONTROL ............................ 61 . CONSULT-II OPERATION ..................................90 .
CAN Communication System Description ............. 61 . DATA MONITOR .................................................91 .
Wiring Diagram -- F/FOG -- ................................. 62 . Combination Switch Inspection ..............................92 .
Terminals and Reference Values for BCM ............. 63 . Removal and Installation ........................................94 .
Terminals and Reference Values for IPDM E/R ..... 64 . Switch Circuit Inspection ........................................94 .
How to Proceed With Trouble Diagnosis ............... 64 . STOP LAMP .............................................................95 .
Preliminary Check ................................................. 65 . Wiring Diagram -- STOP/L -- ...............................95 .
CHECK POWER SUPPLY AND GROUND CIR- Bulb Replacement for High-mounted Stop Lamp ...97
CUIT ................................................................... 65
. WITH REAR AIR SPOILER ................................97 .
CONSULT-II Function ............................................ 66 . WITHOUT REAR AIR SPOILER .........................97 .
Front Fog Lamps Do Not Illuminate (Both Sides) ... 66 Bulb Replacement for Rear Combination Lamp ....97 .
Front Fog Lamp Does Not Illuminate (One Side) ... 67 REMOVAL ...........................................................97 .
Aiming Adjustment ................................................. 68 . INSTALLATION ...................................................97 .
ALL EXCEPT SE-R MODELS ............................ 68 . Removal and Installation for High-mounted Stop
SE-R MODELS ................................................... 68 . Lamp ......................................................................97
.
Bulb Replacement ................................................. 70 . WITH REAR AIR SPOILER-SE-R ......................97 .
ALL EXCEPT SE-R MODELS ............................ 70 . WITH REAR AIR SPOILER-EXCEPT SE-R .......97 .
SE-R MODELS ................................................... 70 . WITHOUT REAR AIR SPOILER .........................97 .
Removal and Installation ....................................... 70 . Removal and Installation for Rear Combination
ALL EXCEPT SE-R MODELS ............................ 70 . Lamp ......................................................................97
.
SE-R MODELS ................................................... 71 . REMOVAL ...........................................................97 .
TURN SIGNAL AND HAZARD WARNING LAMPS... 72 INSTALLATION ...................................................97 .
Component Parts and Harness Connector Location 72 ... BACK-UP LAMP ......................................................98 .
System Description ................................................ 72 . Wiring Diagram -- BACK/L -- ...............................98 .
TURN SIGNAL OPERATION .............................. 72 . Bulb Replacement ..................................................99 .
HAZARD LAMP OPERATION ............................ 73 . Removal and Installation ........................................99 .
REMOTE KEYLESS ENTRY SYSTEM OPERA- PARKING, LICENSE PLATE AND TAIL LAMPS ... 100 .
TION ................................................................... 74
. Component Parts and Harness Connector Location .100
CAN Communication System Description ............. 74 . System Description .............................................. 100 .
Schematic .............................................................. 75
. OPERATION BY LIGHTING SWITCH .............. 100 .
Wiring Diagram -- TURN -- .................................. 76 . BATTERY SAVER CONTROL .......................... 101 .
Terminals and Reference Values for BCM ............. 79 . CAN Communication System Description ........... 101 .
How to Proceed With Trouble Diagnosis ............... 80 . Schematic ............................................................ 102
.
Preliminary Check ................................................. 81 . Wiring Diagram -- TAIL/L -- ................................ 103 .
Revision: March 2005 LT-2 2005 Altima
Terminals and Reference Values for BCM .......... 106 . CONSULT-II OPERATION ................................ 126 .
Terminals and Reference Values for IPDM E/R .. 107 . WORK SUPPORT ............................................ 127 . A
How to Proceed With Trouble Diagnosis ............. 107 . DATA MONITOR .............................................. 127 .
Preliminary Check ............................................... 108 . ACTIVE TEST .................................................. 128 .
CHECK POWER SUPPLY AND GROUND CIR- Interior Room Lamp Control Does Not Operate .. 129 . B
CUIT ................................................................. 108
. Ignition Keyhole Illumination Control Does Not
CONSULT-II Functions ........................................ 109 . Operate ................................................................ 130
.
Parking, License Plate and/or Tail Lamps Do Not All Step Lamps Do Not Operate .......................... 132 .
Illuminate ............................................................. 109
. All Interior Room Lamps Do Not Operate ............ 133 . C
Parking, License Plate and Tail Lamps Do Not Turn Bulb Replacement ............................................... 133 .
OFF (After Approx. 10 Minutes) ...........................113 . ROOM OR SPOT LAMP .................................. 133 .
Bulb Replacement ................................................114 . STEP LAMP ..................................................... 133 . D
LICENSE PLATE LAMP ....................................114 . VANITY MIRROR LAMP .................................. 133 .
FRONT TURN SIGNAL (PARKING) LAMP ......114 . TRUNK ROOM LAMP ...................................... 133 .
TAIL LAMP ........................................................114. Removal and Installation ..................................... 134 . E
Removal and Installation ......................................114 . ROOM LAMP ................................................... 134 .
LICENSE PLATE LAMP ....................................114 . IGNITION KEYHOLE ILLUMINATION LAMP ... 134 .
FRONT TURN SIGNAL (PARKING) LAMP ......114 . STEP LAMP ..................................................... 134 .
REAR COMBINATION LAMP ...........................114 . TRUNK ROOM LAMP ...................................... 134 . F
INTERIOR ROOM LAMP ........................................115 . ILLUMINATION ...................................................... 135 .
Component Parts and Harness Connector Location ..115 Component Parts and Harness Connector Location 135 .
System Description ..............................................115 . System Description .............................................. 135 . G
POWER SUPPLY AND GROUND ....................115 . ILLUMINATION OPERATION BY LIGHTING
SWITCH OPERATION ......................................116 . SWITCH ........................................................... 136
.
ROOM LAMP TIMER OPERATION ..................117 . BATTERY SAVER CONTROL .......................... 137 . H
INTERIOR LAMP BATTERY SAVER CONTROL ..118 CAN Communication System Description ........... 137 .
Schematic ............................................................119
. Schematic ............................................................ 138
.
Wiring Diagram -- INT/L -- ................................ 120 . Wiring Diagram -- ILL -- ..................................... 139 .
I
Models With Vanity Lamps .................................. 123 . Removal and Installation ..................................... 143 .
Terminals and Reference Values for BCM .......... 124 . ILLUMINATION CONTROL SWITCH ............... 143 .
How to Proceed With Trouble Diagnosis ............. 125 . GLOVE BOX LAMP .......................................... 143 .
Preliminary Check ............................................... 125 . BULB SPECIFICATIONS ....................................... 144 . J
INSPECTION FOR POWER SUPPLY AND Headlamp ............................................................ 144
.
GROUND CIRCUIT .......................................... 125 . Exterior Lamp ...................................................... 144
.
CONSULT-II Function (BCM) .............................. 126 . Interior Lamp/Illumination .................................... 144 . LT
L
M
Revision: March 2005 LT-3 2005 Altima
PRECAUTIONS
PRECAUTIONS PFP:00011
Precautions for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT
BELT PRE-TENSIONER" EKS008LD
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:
q 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.
q 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.
q 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 EKS008LE
q Never work with wet hands.
q The xenon headlamp system includes a high voltage generating
part. Be sure to disconnect battery negative cable (negative ter-
minal) or power fuse before removing, installing, or touching the
xenon headlamp (including lamp bulb).
q Turn the lighting switch OFF before disconnecting and connect-
ing the connector.
q When turning the xenon headlamp on and while it is illuminated,
never touch the harness, bulb, and socket of the headlamp.
q When checking the headlamp on/off operation, check it on vehi- PKIA0183E
cle and with the power connected to the vehicle-side connector.
q 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.
q 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.
q When the bulb has burned out, wrap it in a thick vinyl bag and
discard. Do not break the bulb.
q 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
q When adjusting the headlamp aiming, turn the aiming adjust-
ment screw only in the tightening direction. (If it is necessary to loosen the screw, first fully loosen the
screw, and then turn it in the tightening direction.)
q Do not use organic solvent (paint thinner or gasoline) to clean lamps and to remove old sealant.
Wiring Diagrams and Trouble Diagnosis EKS008LF
When you read wiring diagrams, refer to the following:
q GI-14, "How to Read Wiring Diagrams"
q PG-4, "POWER SUPPLY ROUTING CIRCUIT"
Revision: March 2005 LT-4 2005 Altima
PRECAUTIONS
When you perform trouble diagnosis, refer to the following:
q GI-10, "HOW TO FOLLOW TEST GROUPS IN TROUBLE DIAGNOSES" A
q GI-26, "How to Perform Efficient Diagnosis for an Electrical Incident"
B
C
D
E
F
G
H
I
J
LT
L
M
Revision: March 2005 LT-5 2005 Altima
HEADLAMP (FOR USA)
HEADLAMP (FOR USA) PFP:26010
Component Parts and Harness Connector Location EKS008LG
WKIA4084E
System Description EKS008LH
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) to illuminate. This input is communicated to the IPDM E/R (intelli-
gent power distribution module engine room) across the CAN communication lines. The CPU (central pro-
cessing 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
q to headlamp high relay, located in the IPDM E/R, and
q to headlamp low relay, located in the IPDM E/R, and
q through 50A fusible link (letter f , located in the fuse and fusible link box)
q to BCM terminal 70.
With the ignition switch in the ON or START position, power is supplied
q through 10A fuse [No. 1, located in the fuse block (J/B)]
q to BCM terminal 38.
With the ignition switch in the ACC or ON position, power is supplied
q through 10A fuse [No. 6, located in the fuse block (J/B)]
q to BCM terminal 11.
Ground is supplied
Revision: March 2005 LT-6 2005 Altima
HEADLAMP (FOR USA)
q to BCM terminal 67
q through grounds F14, M57 and M61. A
Low Beam Operation
With the lighting switch in 2ND position, the BCM receives input requesting the headlamps to illuminate. This B
input is communicated to the IPDM E/R across the CAN communication lines. The CPU of the IPDM E/R con-
trols the headlamp low relay coil. When energized, this relay directs power
q through 15A fuse (No. 36, located in the IPDM E/R)
C
q through IPDM E/R terminal 20
q to headlamp RH terminal 1, and
q through 15A fuse (No. 45, located in the IPDM E/R) D
q through IPDM E/R terminal 30
q to headlamp LH terminal 1.
Ground is supplied E
q to headlamp RH terminal 2
q to headlamp LH terminal 2
q through grounds E15 and E24. F
With power and ground supplied, low beam headlamps illuminate.
High Beam Operation/Flash-to-Pass Operation G
With the lighting switch in 2ND position and placed in HIGH or PASS position, the BCM receives input request-
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. H
The CPU of the IPDM E/R controls the headlamp high relay coil. When energized, this relay directs power
q through 10A fuse (No. 40, located in the IPDM E/R)
q through IPDM E/R terminal 27 I
q to headlamp RH terminal 1, and
q through 10A fuse (No. 38, located in the IPDM E/R)
q through IPDM E/R terminal 28 J
q to headlamp LH terminal 1.
Ground is supplied
q to headlamp RH terminal 2 LT
q to headlamp LH terminal 2
q through grounds E15 and E24.
L
With power and ground supplied, the high beam headlamps illuminate.
BATTERY SAVER CONTROL
When the combination switch (lighting switch) is in the 2ND position (ON) and the ignition switch is turned from M
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-44, "System Description" for auto light operation.
XENON HEADLAMP (IF EQUIPPED)
The low beam headlamps may be equipped with xenon type bulbs. 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 advantages of the xenon type headlamp.
q The light produced by the headlamps is a white color comparable to sunlight that is easy on the eyes.
q Light output is nearly double that of halogen headlamps, affording increased area of illumination.
Revision: March 2005 LT-7 2005 Altima
HEADLAMP (FOR USA)
q 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.
q Power consumption is approximately 25 percent less than halogen headlamps, reducing battery load.
CAN Communication System Description EKS008LI
Refer to LAN-21, "CAN COMMUNICATION" .
Revision: March 2005 LT-8 2005 Altima
HEADLAMP (FOR USA)
Wiring Diagram -- H/LAMP -- EKS008LJ
HALOGEN A
B
C
D
E
F
G
H
I
J
LT
L
M
WKWA1360E
Revision: March 2005 LT-9 2005 Altima
HEADLAMP (FOR USA)
WKWA1361E
Revision: March 2005 LT-10 2005 Altima
HEADLAMP (FOR USA)
XENON
A
B
C
D
E
F
G
H
I
J
LT
L
M
WKWA1301E
Revision: March 2005 LT-11 2005 Altima
HEADLAMP (FOR USA)
WKWA1362E
Revision: March 2005 LT-12 2005 Altima
HEADLAMP (FOR USA)
Terminals and Reference Values for BCM EKS008LK
A
Measuring condition
Terminal Wire Reference value
Signal name Ignition
No. color Operation or condition (Approx.)
switch B
C
Lighting, turn, wiper OFF
2 L Combination switch input 5 ON
Wiper dial position 4
D
SKIA5291E
E
Lighting, turn, wiper OFF
3 R/Y Combination switch input 4 ON
Wiper dial position 4
F
SKIA5292E
G
Lighting, turn, wiper OFF
4 R/G Combination switch input 3 ON
Wiper dial position 4
H
SKIA5291E
5 R/B Combination switch input 2 I
Lighting, turn, wiper OFF
ON J
6 R/W Combination switch input 1 Wiper dial position 4
SKIA5292E
LT
11 PU Ignition switch (ACC) ACC -- Battery voltage
L
Lighting, turn, wiper OFF
32 L/W Combination switch output 5 ON
Wiper dial position 4
M
SKIA5291E
Lighting, turn, wiper OFF
33 G/Y Combination switch output 4 ON
Wiper dial position 4
SKIA5292E
Lighting, turn, wiper OFF
34 G/R Combination switch output 3 ON
Wiper dial position 4
SKIA5291E
Revision: March 2005 LT-13 2005 Altima
HEADLAMP (FOR USA)
Measuring condition
Terminal Wire Reference value
Signal name Ignition
No. color Operation or condition (Approx.)
switch
35 G/B Combination switch output 2
Lighting, turn, wiper OFF
ON
36 G/W Combination switch output 1 Wiper dial position 4
SKIA5292E
38 R Ignition switch (ON) ON -- Battery voltage
39 L CAN-H -- -- --
40 P CAN-L -- -- --
67 B Ground ON -- 0V
70 W/B Battery power supply (fusible link) OFF -- Battery voltage
Terminals and Reference Values for IPDM E/R EKS008LL
Measuring condition
Terminal Wire Reference value
Signal name Ignition
No. color Operation or condition (Approx.)
switch
Lighting switch OFF 0V
20 R/Y Headlamp low (RH) ON
2ND position ON Battery voltage
Lighting switch OFF 0V
27 L/W Headlamp high (RH) ON HIGH or PASS
position ON Battery voltage
Lighting switch OFF 0V
28 G Headlamp high (LH) ON HIGH or PASS
position ON Battery voltage
Lighting switch OFF 0V
30 L Headlamp low (LH) ON
2ND position ON Battery voltage
48 L CAN-H -- -- --
49 P CAN-L -- -- --
How to Proceed With Trouble Diagnosis EKS008LM
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-14, "Preliminary Check" .
4. Check symptom and repair or replace the cause of malfunction.
5. Do the headlamps operate normally? If YES: GO TO 6. If NO: GO TO 4.
6. Inspection End.
Preliminary Check EKS008LN
CHECK POWER SUPPLY AND GROUND CIRCUIT
1. CHECK FUSES AND FUSIBLE LINK
Check for blown fuses or fusible link.
Unit Power source Fuse No.
Battery f
BCM Ignition switch ACC or ON position 6
Ignition switch ON or START position 1
Revision: March 2005 LT-14 2005 Altima
HEADLAMP (FOR USA)
Unit Power source Fuse No.
A
36
38
IPDM E/R Battery
40 B
45
Refer to LT-9, "Wiring Diagram -- H/LAMP --" .
C
OK or NG
OK >> GO TO 2.
NG >> If fuse is blown, be sure to eliminate cause of blown fuse before installing new fuse. Refer to PG-
D
4, "POWER SUPPLY ROUTING CIRCUIT" .
2. CHECK POWER SUPPLY CIRCUIT
E
1. Disconnect BCM connectors.
2. Check voltage between BCM harness connector terminals and
ground. F
BCM Ignition switch position
(+)
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