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EXL

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DRIVER CONTROLS

SECTION
EXTERIOR LIGHTING SYSTEM
EXL B

E
CONTENTS
BASIC INSPECTION ................................... 4
. Component Parts Location .....................................17
. F
Component Description ..........................................18
.
DIAGNOSIS AND REPAIR WORKFLOW ......... 4
.
Work Flow ................................................................ 4
. COMBINATION SWITCH .................................. 19
G
System Description .................................................19
.
FUNCTION DIAGNOSIS .............................. 7
.
DIAGNOSIS SYSTEM (BCM) ........................... 20
HEADLAMP (HALOGEN TYPE) ........................ 7
. H
System Diagram ....................................................... 7
. COMMON ITEM ........................................................20
.
System Description .................................................. 7
. COMMON ITEM : Diagnosis Description ...............20 .
Component Parts Location ....................................... 7
. COMMON ITEM : CONSULT-III Function ..............20 .
I
Component Description ............................................ 7
. EXTERNAL LAMP ....................................................20
.
DAYTIME RUNNING LIGHT SYSTEM .............. 9
. EXTERNAL LAMP : CONSULT-III Function ...........21 .
System Diagram ....................................................... 9
. FLASHER ..................................................................22
. J
System Description .................................................. 9
. FLASHER : CONSULT-III Function (BCM -
Component Parts Location ....................................... 9
. FLASHER) ..............................................................22
.
Component Description .......................................... 10
. K
DIAGNOSIS SYSTEM (IPDM E/R) ................... 24
AUTO LIGHT SYSTEM .....................................11
. CONSULT - III Function (IPDM E/R) ......................24
.
System Diagram ..................................................... 11
.
System Description ................................................ 11
. COMPONENT DIAGNOSIS ........................ 25 EXL
.
Component Parts Location ..................................... 12
.
Component Description .......................................... 12
. POWER SUPPLY AND GROUND CIRCUIT .... 25
M
FRONT FOG LAMP ...........................................14
. BCM (BODY CONTROL MODULE) .........................25 .
System Diagram ..................................................... 14
. BCM (BODY CONTROL MODULE) : Diagnosis
System Description ................................................ 14
. Procedure ...............................................................25
.
Component Parts Location ..................................... 14
. N
IPDM E/R (INTELLIGENT POWER DISTRIBU-
Component Description .......................................... 14
.
TION MODULE ENGINE ROOM) .............................25 .
TURN SIGNAL AND HAZARD WARNING IPDM E/R (INTELLIGENT POWER DISTRIBU-
O
LAMPS ..............................................................15
. TION MODULE ENGINE ROOM) : Diagnosis Pro-
cedure .....................................................................25
.
System Diagram ..................................................... 15
.
System Description ................................................ 15
. HEADLAMP (HI) CIRCUIT ................................ 26 P
Component Parts Location ..................................... 16
. Description ..............................................................26
.
Component Description .......................................... 16
. Component Function Check ...................................26 .
PARKING, LICENSE PLATE AND TAIL Diagnosis Procedure ..............................................26 .
LAMPS ..............................................................17
. HEADLAMP (LO) CIRCUIT .............................. 28
System Diagram ..................................................... 17
. Description ..............................................................28
.
System Description ................................................ 17
. Component Function Check ...................................28 .

Revision: July 2007 EXL-1 2008 Armada
Diagnosis Procedure ............................................. 28
. Symptom Table ...................................................... 88
.

FRONT FOG LAMP CIRCUIT .......................... 30
. NORMAL OPERATING CONDITION ............... 90
.
Description ............................................................. 30
. Description ............................................................. 90
.
Component Function Check .................................. 30 .
Diagnosis Procedure ............................................. 30 . BOTH SIDE HEADLAMPS DO NOT SWITCH
TO HIGH BEAM ................................................ 91
.
PARKING LAMP CIRCUIT ............................... 32
. Description ............................................................. 91
.
Description ............................................................. 32
. Diagnosis Procedure .............................................. 91 .
Component Function Check .................................. 32 .
Diagnosis Procedure ............................................. 32 . BOTH SIDE HEADLAMPS (LO) ARE NOT
TURNED ON ..................................................... 92
.
TURN SIGNAL LAMP CIRCUIT ....................... 35
. Description ............................................................. 92
.
Description ............................................................. 35
. Diagnosis Procedure .............................................. 92 .
Component Function Check .................................. 35 .
Diagnosis Procedure ............................................. 35 . PARKING, LICENSE PLATE AND TAIL
LAMPS ARE NOT TURNED ON ...................... 93
.
OPTICAL SENSOR .......................................... 38
. Description ............................................................. 93
.
Description ............................................................. 38
. Diagnosis Procedure .............................................. 93 .
Component Function Check .................................. 38 .
Diagnosis Procedure ............................................. 38 . BOTH SIDE FRONT FOG LAMPS ARE NOT
TURNED ON ..................................................... 94
.
HEADLAMP ...................................................... 40
. Description ............................................................. 94
.
Wiring Diagram ...................................................... 40
. Diagnosis Procedure .............................................. 94 .
DAYTIME LIGHT SYSTEM ............................... 44
. ON-VEHICLE REPAIR ............................... 95
Wiring Diagram ...................................................... 44
.
ADJUSTMENT AND INSPECTION .................. 95
.
AUTO LIGHT SYSTEM ..................................... 51
.
Wiring Diagram ...................................................... 51
. HEADLAMP .............................................................. 95
.
HEADLAMP : Aiming Adjustment .......................... 95 .
FRONT FOG LAMP SYSTEM .......................... 58
. HEADLAMP : Headlamp Aiming ............................ 96 .
Wiring Diagram ...................................................... 58
.
FRONT FOG LAMP .................................................. 96
.
TURN SIGNAL AND HAZARD WARNING FRONT FOG LAMP : Aiming Adjustment .............. 96 .
LAMP SYSTEM ................................................ 61
.
Wiring Diagram ...................................................... 61
. REMOVAL AND INSTALLATION .............. 98
PARKING, LICENSE PLATE AND TAIL HEADLAMP ...................................................... 98
.
LAMPS SYSTEM .............................................. 67
. Bulb Replacement .................................................. 98
.
Wiring Diagram ...................................................... 67
. Removal and Installation ........................................ 99
.
Disassembly and Assembly ................................... 99 .
STOP LAMP ..................................................... 72
.
Wiring Diagram ...................................................... 72
. AUTO LIGHT SYSTEM ................................... 101
.
Removal and Installation ...................................... 101
.
BACK-UP LAMP ............................................... 76
.
Wiring Diagram ...................................................... 76
. FRONT FOG LAMP ......................................... 102
.
Bulb Replacement ................................................ 102
.
TRAILER TOW ................................................. 80
. Removal and Installation ...................................... 102
.
Wiring Diagram ...................................................... 80
.
LIGHTING & TURN SIGNAL SWITCH ............ 103
.
ECU DIAGNOSIS ....................................... 86
. Removal and Installation ...................................... 103
.
BCM (BODY CONTROL MODULE) ................. 86
. HAZARD SWITCH ........................................... 104
.
Description ............................................................. 86
. Removal and Installation ...................................... 104
.
IPDM E/R (INTELLIGENT POWER DISTRI- STOP LAMP .................................................... 105
.
BUTION MODULE ENGINE ROOM) ................ 87
. Bulb Replacement ................................................ 105
.
Description ............................................................. 87
. Removal and Installation ...................................... 105
.

SYMPTOM DIAGNOSIS ............................ 88
. REAR COMBINATION LAMP ......................... 106
.
Bulb Replacement ................................................ 106
.
EXTERIOR LIGHTING SYSTEM SYMPTOMS... 88 Removal and Installation ...................................... 106
.

Revision: July 2007 EXL-2 2008 Armada
SERVICE DATA AND SPECIFICATIONS BULB SPECIFICATIONS ................................ 107
(SDS) ......................................................... 107
. Headlamp ............................................................. 107
. A
Exterior Lamp ....................................................... 107
.

EXL

Revision: July 2007 EXL-3 2008 Armada
DIAGNOSIS AND REPAIR WORKFLOW
< BASIC INSPECTION >
BASIC INSPECTION
DIAGNOSIS AND REPAIR WORKFLOW
Work Flow INFOID:0000000001531057

OVERALL SEQUENCE

JPLIA0089GB

Revision: July 2007 EXL-4 2008 Armada
DIAGNOSIS AND REPAIR WORKFLOW
< BASIC INSPECTION >

DETAILED FLOW A
1.INTERVIEW FOR MALFUNCTION
Find out what the customer's concerns are.
B

>> GO TO 2
2.SYMPTOM CHECK C
Verify the symptom from the customer's information.

D
>> GO TO 3
3.BASIC INSPECTION
Check the operation of each part. Check that any concerns occur other than those mentioned in the customer E
interview.

>> GO TO 4 F
4.SELF-DIAGNOSIS WITH CONSULT-III
Perform the self diagnosis with CONSULT-III. Check that any DTC is detected.
G
Is any DTC detected?
YES >> GO TO 5
NO >> GO TO 6 H
5.TROUBLE DIAGNOSIS BY DTC
Perform the trouble diagnosis for the detected DTC. Specify the malfunctioning part.
I
>> GO TO 9
6.FAIL-SAFE ACTIVATION CHECK J
Determine if the customer's concern is related to fail-safe activation.
Does the fail-safe activate?
YES >> GO TO 7 K
NO >> GO TO 8
7.SYSTEM DIAGNOSIS EXL
Perform the system diagnosis for the system in which the fail-safe activates. Specify the malfunctioning part.

M
>> GO TO 9
8.SYMPTOM DIAGNOSIS
N
Perform the symptom diagnosis. Specify the malfunctioning part.

>> GO TO 9 O
9.MALFUNCTION PART REPAIR
Repair or replace the malfunctioning part.
P
>> GO TO 11
10.REPAIR CHECK (SELF-DIAGNOSIS WITH CONSULT-III)
Perform the self diagnosis with CONSULT-III. Verfied that no DTCs are detected. Erase all DTCs detected
prior to the repair. Verify that DTC is not detected again.
Is any DTC detected?

Revision: July 2007 EXL-5 2008 Armada
DIAGNOSIS AND REPAIR WORKFLOW
< BASIC INSPECTION >
YES >> GO TO 5
NO >> GO TO 11
11.REPAIR CHECK (OPERATION CHECK)
Check the operation of each part.
Does it operate normally?
YES >> INSPECTION END
NO >> GO TO 3

Revision: July 2007 EXL-6 2008 Armada
HEADLAMP (HALOGEN TYPE)
< FUNCTION DIAGNOSIS >
FUNCTION DIAGNOSIS A
HEADLAMP (HALOGEN TYPE)
System Diagram INFOID:0000000001531058
B

AWLIA0002GB

G
System Description INFOID:0000000001531059

Control of the headlamp system operation is dependent upon the position of the lighting switch (combination H
switch). When the lighting switch is placed in the 2nd position, the BCM (body control module) receives input
requesting the headlamps and park lamps to illuminate. This input is communicated to the IPDM E/R (intelli-
gent power distribution module engine room) via 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 I
direct power to the respective headlamps, which then illuminate.
Component Parts Location INFOID:0000000001531060
J

EXL

ALLIA0379ZZ O

1. BCM M18, M20 (view with instrument 2. IPDM E/R E122, E123, E124 3. Combination switch M28
panel removed)
P
4. Combination meter M23, M24

Component Description INFOID:0000000001531061

LOW BEAM OPERATION

Revision: July 2007 EXL-7 2008 Armada
HEADLAMP (HALOGEN TYPE)
< FUNCTION DIAGNOSIS >
When the lighting switch is in 2ND position, the BCM receives input requesting the headlamps to illuminate.
This input is communicated to the IPDM E/R via the CAN communication lines. The CPU of the IPDM E/R
controls the headlamp low relay coil which supplies power to the low beam headlamps.
HIGH BEAM OPERATION/FLASH-TO-PASS OPERATION
With the lighting switch in the 2ND position and placed in HIGH position, the BCM receives input requesting
the headlamp high beams to illuminate. The flash to pass feature can be used any time and also sends a sig-
nal to the BCM. This input is communicated to the IPDM E/R via the CAN communication lines. The CPU of
the combination meter controls the ON/OFF status off the HIGH BEAM indicator. The CPU of the IPDM E/R
controls the headlamp high relay coil which supplies power to the high beam headlamps.
The combination meter receives a high beam request signal (ON) via the CAN communication lines and turns
the high beam indicator lamp ON.
COMBINATION SWITCH READING FUNCTION
Refer to BCS-7, "System Description".
AUTO LIGHT OPERATION
Refer to EXL-11, "System Description".

Revision: July 2007 EXL-8 2008 Armada
DAYTIME RUNNING LIGHT SYSTEM
< FUNCTION DIAGNOSIS >
DAYTIME RUNNING LIGHT SYSTEM
A
System Diagram INFOID:0000000001531062

AWLIA0010GB F

System Description INFOID:0000000001531063

G
The headlamp system for Canada vehicles is equipped with a daytime light control unit that activates the high
beam headlamps at approximately half illumination whenever the engine is operating. If the parking brake is
applied before the engine is started the daytime lights will not be illuminated. The daytime lights will illuminate H
once the parking brake is released. Thereafter, the daytime lights will continue to operate when the parking
brake is applied.
Component Parts Location INFOID:0000000001531064 I

EXL

ALLIA0380ZZ

Revision: July 2007 EXL-9 2008 Armada
DAYTIME RUNNING LIGHT SYSTEM
< FUNCTION DIAGNOSIS >

1. IPDM E/R E119, E122, E123, E124 2. Parking brake switch M11 3. BCM M18, M20 (view with instrument
panel removed)
4. Daytime running light relay E103 5. Combination switch M28 6. Combination meter M24

Component Description INFOID:0000000001531065

After starting the engine with the parking brake released and the lighting switch in the OFF or 1ST position, the
headlamp high beam automatically turns on at a reduced intensity. With the lighting switch in the 2nd position
or with autolamps ON, the headlamps function the same as conventional light systems.
OPERATION
The BCM monitors inputs from the parking brake switch and the combination switch to determine when to acti-
vate the daytime light system. The BCM sends a daytime light request to the IPDM E/R via the CAN commu-
nication lines. The IPDM E/R grounds the daytime light relay which in turn, provides power to the ground side
of the LH high beam lamp. Power flows backward through the LH high beam lamp to the IPDM E/R, through
the high beam fuses, through the RH high beam lamp circuit to the RH high beam lamp and on to ground. The
high beam lamps are wired in series which causes them to illuminate at a reduced intensity.

Revision: July 2007 EXL-10 2008 Armada
AUTO LIGHT SYSTEM
< FUNCTION DIAGNOSIS >
AUTO LIGHT SYSTEM
A
System Diagram INFOID:0000000001531066

ALLIA0381ZZ

G
System Description INFOID:0000000001531067

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