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EXL

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DRIVER CONTROLS

SECTION
EXTERIOR LIGHTING SYSTEM
EXL B

E
CONTENTS
BASIC INSPECTION ................................... 3
. Component Parts Location .....................................16
. F
Component Description ..........................................17
.
DIAGNOSIS AND REPAIR WORKFLOW ......... 3
.
Work Flow ................................................................ 3
. COMBINATION SWITCH .................................. 18
G
System Description .................................................18
.
FUNCTION DIAGNOSIS .............................. 6
.
DIAGNOSIS SYSTEM (BCM) ........................... 19
HEADLAMP (HALOGEN TYPE) ........................ 6
. H
System Diagram ....................................................... 6
. COMMON ITEM ........................................................19
.
System Description .................................................. 6
. COMMON ITEM : Diagnosis Description ...............19 .
Component Parts Location ....................................... 6
. COMMON ITEM : CONSULT-III Function ..............19 .
I
Component Description ............................................ 6
. EXTERNAL LAMP ....................................................19
.
AUTO LIGHT SYSTEM ...................................... 8
. EXTERNAL LAMP : CONSULT-III Function ...........19 .
System Diagram ....................................................... 8
. FLASHER ..................................................................21
. J
System Description .................................................. 8
. FLASHER : CONSULT-III Function (BCM -
Component Parts Location ....................................... 9
. FLASHER) ..............................................................21
.
Component Description ............................................ 9
. K
DIAGNOSIS SYSTEM (IPDM E/R) ................... 22
DAYTIME RUNNING LIGHT SYSTEM .............11
. CONSULT - III Function (IPDM E/R) ......................22
.
System Diagram ..................................................... 11
.
System Description ................................................ 11
. COMPONENT DIAGNOSIS ........................ 23 EXL
.
Component Parts Location ..................................... 11
.
Component Description .......................................... 12
. POWER SUPPLY AND GROUND CIRCUIT .... 23
M
FRONT FOG LAMP ...........................................13
. BCM (BODY CONTROL MODULE) .........................23 .
System Diagram ..................................................... 13
. BCM (BODY CONTROL MODULE) : Diagnosis
System Description ................................................ 13
. Procedure ...............................................................23
.
Component Parts Location ..................................... 13
. N
IPDM E/R (INTELLIGENT POWER DISTRIBU-
Component Description .......................................... 13
.
TION MODULE ENGINE ROOM) .............................23 .
TURN SIGNAL AND HAZARD WARNING IPDM E/R (INTELLIGENT POWER DISTRIBU-
O
LAMPS ..............................................................14
. TION MODULE ENGINE ROOM) : Diagnosis Pro-
cedure .....................................................................23
.
System Diagram ..................................................... 14
.
System Description ................................................ 14
. HEADLAMP (HI) CIRCUIT ................................ 24 P
Component Parts Location ..................................... 15
. Description ..............................................................24
.
Component Description .......................................... 15
. Component Function Check ...................................24 .
PARKING, LICENSE PLATE AND TAIL Diagnosis Procedure ..............................................24 .
LAMPS ..............................................................16
. HEADLAMP (LO) CIRCUIT .............................. 26
System Diagram ..................................................... 16
. Description ..............................................................26
.
System Description ................................................ 16
. Component Function Check ...................................26 .

Revision: April 2007 EXL-1 2008 Titan
Diagnosis Procedure ............................................. 26
. EXTERIOR LIGHTING SYSTEM SYMPTOMS 85
...
Symptom Table ...................................................... 85
.
FRONT FOG LAMP CIRCUIT .......................... 28
.
Description ............................................................. 28
. NORMAL OPERATING CONDITION ............... 87
.
Component Function Check .................................. 28 . Description ............................................................. 87
.
Diagnosis Procedure ............................................. 28 .
BOTH SIDE HEADLAMPS DO NOT SWITCH
PARKING LAMP CIRCUIT ............................... 30
. TO HIGH BEAM ................................................ 88
.
Description ............................................................. 30
. Description ............................................................. 88
.
Component Function Check .................................. 30 . Diagnosis Procedure .............................................. 88 .
Diagnosis Procedure ............................................. 30 .
BOTH SIDE HEADLAMPS (LO) ARE NOT
TURN SIGNAL LAMP CIRCUIT ....................... 33
. TURNED ON ..................................................... 89
.
Description ............................................................. 33
. Description ............................................................. 89
.
Component Function Check .................................. 33 . Diagnosis Procedure .............................................. 89 .
Diagnosis Procedure ............................................. 33 .
PARKING, LICENSE PLATE AND TAIL
OPTICAL SENSOR .......................................... 36
. LAMPS ARE NOT TURNED ON ...................... 90
.
Description ............................................................. 36
. Description ............................................................. 90
.
Component Function Check .................................. 36 . Diagnosis Procedure .............................................. 90 .
Diagnosis Procedure ............................................. 36 .
BOTH SIDE FRONT FOG LAMPS ARE NOT
HEADLAMP ...................................................... 38
. TURNED ON ..................................................... 91
.
Wiring Diagram ...................................................... 38
.
Description ............................................................. 91
.
AUTO LIGHT SYSTEM ..................................... 42
. Diagnosis Procedure .............................................. 91 .
Wiring Diagram ...................................................... 42
.
ON-VEHICLE REPAIR ............................... 92
DAYTIME LIGHT SYSTEM ............................... 48
.
HEADLAMP ...................................................... 92
.
Wiring Diagram ...................................................... 48
.
Aiming Adjustment ................................................. 92
.
FRONT FOG LAMP SYSTEM .......................... 55
. Bulb Replacement .................................................. 93
.
Wiring Diagram ...................................................... 55
. Removal and Installation ........................................ 94
.
Disassembly and Assembly ................................... 95 .
TURN SIGNAL AND HAZARD WARNING
LAMP SYSTEM ................................................ 58
. AUTO LIGHT SYSTEM .................................... 96
.
Wiring Diagram ...................................................... 58
. Removal and Installation ........................................ 96
.

PARKING, LICENSE PLATE AND TAIL FRONT FOG LAMP .......................................... 97
.
LAMPS SYSTEM .............................................. 65
. Aiming Adjustment ................................................. 97
.
Wiring Diagram ...................................................... 65
. Bulb Replacement .................................................. 98
.
Removal and Installation ........................................ 98
.
STOP LAMP ..................................................... 69
.
Wiring Diagram ...................................................... 69
.
LIGHTING & TURN SIGNAL SWITCH ............. 99
.
Removal and Installation ........................................ 99
.
BACK-UP LAMP ............................................... 73
.
Wiring Diagram ...................................................... 73
.
HAZARD SWITCH ........................................... 100
.
Removal and Installation ...................................... 100
.
TRAILER TOW ................................................. 77
.
Wiring Diagram ...................................................... 77
.
STOP LAMP .................................................... 101
.
Bulb Replacement ................................................ 101
.
ECU DIAGNOSIS ....................................... 83
. Removal and Installation ...................................... 101
.

BCM (BODY CONTROL MODULE) ................. 83
. REAR COMBINATION LAMP ......................... 102
.
Description ............................................................. 83
. Bulb Replacement ................................................ 102
.
Removal and Installation ...................................... 102
.
IPDM E/R (INTELLIGENT POWER DISTRI-
BUTION MODULE ENGINE ROOM) ................ 84
. SERVICE DATA AND SPECIFICATIONS
Description ............................................................. 84
. (SDS) ............................................................... 103
.
Headlamp ............................................................. 103
.
SYMPTOM DIAGNOSIS ............................ 85
. Exterior Lamp ....................................................... 103
.

Revision: April 2007 EXL-2 2008 Titan
DIAGNOSIS AND REPAIR WORKFLOW
< BASIC INSPECTION >
BASIC INSPECTION A
DIAGNOSIS AND REPAIR WORKFLOW
Work Flow INFOID:0000000001621593
B

OVERALL SEQUENCE
C

EXL

P
JPLIA0089GB

Revision: April 2007 EXL-3 2008 Titan
DIAGNOSIS AND REPAIR WORKFLOW
< BASIC INSPECTION >

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

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

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

>> GO TO 4
4.SELF-DIAGNOSIS WITH CONSULT-III
Perform the self diagnosis with CONSULT-III. Check that any DTC is detected.
Is any DTC detected?
YES >> GO TO 5
NO >> GO TO 6
5.TROUBLE DIAGNOSIS BY DTC
Perform the trouble diagnosis for the detected DTC. Specify the malfunctioning part.

>> GO TO 9
6.FAIL-SAFE ACTIVATION CHECK
Determine if the customer's concern is related to fail-safe activation.
Does the fail-safe activate?
YES >> GO TO 7
NO >> GO TO 8
7.SYSTEM DIAGNOSIS
Perform the system diagnosis for the system in which the fail-safe activates. Specify the malfunctioning part.

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

>> GO TO 9
9.MALFUNCTION PART REPAIR
Repair or replace the malfunctioning part.

>> 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: April 2007 EXL-4 2008 Titan
DIAGNOSIS AND REPAIR WORKFLOW
< BASIC INSPECTION >
YES >> GO TO 5
NO >> GO TO 11 A
11.REPAIR CHECK (OPERATION CHECK)
Check the operation of each part.
B
Does it operate normally?
YES >> INSPECTION END
NO >> GO TO 3
C

EXL

Revision: April 2007 EXL-5 2008 Titan
HEADLAMP (HALOGEN TYPE)
< FUNCTION DIAGNOSIS >
FUNCTION DIAGNOSIS
HEADLAMP (HALOGEN TYPE)
System Diagram INFOID:0000000001621594

AWLIA0002GB

System Description INFOID:0000000001621595

Control of the headlamp system operation is dependent upon the position of the lighting switch (combination
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
direct power to the respective headlamps, which then illuminate.
Component Parts Location INFOID:0000000001621596

ALLIA0379ZZ

1. BCM M18, M20 (view with instrument 2. IPDM E/R E122, E123, E124 3. Combination switch M28
panel removed)
4. Combination meter M24, M25

Component Description INFOID:0000000001621597

LOW BEAM OPERATION

Revision: April 2007 EXL-6 2008 Titan
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 A
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 B
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 C
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.
D
COMBINATION SWITCH READING FUNCTION
Refer to BCS-5, "System Description".
AUTO LIGHT OPERATION E
Refer to EXL-8, "System Description".

EXL

Revision: April 2007 EXL-7 2008 Titan
AUTO LIGHT SYSTEM
< FUNCTION DIAGNOSIS >
AUTO LIGHT SYSTEM
System Diagram INFOID:0000000001621602

ALLIA0562GB

System Description INFOID:0000000001621603

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