
EXL-1
DRIVER CONTROLS
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CONTENTS
EXTERIOR LIGHTING SYSTEM
PRECAUTION ....... ........................................4
PRECAUTIONS .............................................. .....4
Precaution for Supplemental Restraint System
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" ............................................................. ......
4
Precaution for Work ..................................................4
PREPARATION ............................................5
PREPARATION .............................................. .....5
Special Service Tool ........................................... ......5
SYSTEM DESCRIPTION ..............................6
COMPONENT PARTS ................................... .....6
Component Parts Location .................................. ......6
Component Description .............................................6
SYSTEM ..............................................................8
HEADLAMP SYSTEM .................................................8
HEADLAMP SYSTEM : Syst em Diagram .................8
HEADLAMP SYSTEM : System Description ....... ......8
DAYTIME RUNNING LIGHT SYSTEM ........................9
DAYTIME RUNNING LIGHT SYSTEM : System
Diagram ............................................................... ......
9
DAYTIME RUNNING LIGHT SYSTEM : System
Description ................................................................
9
FRONT FOG LAMP SYSTEM .....................................9
FRONT FOG LAMP SYSTEM : System Diagram ......9
FRONT FOG LAMP SYSTEM : System Descrip-
tion ..........................................................................
10
TURN SIGNAL AND HAZARD WARNING LAMP
SYSTEM ................................................................ ....
10
TURN SIGNAL AND HAZARD WARNING LAMP
SYSTEM : System Diagram ....................................
10
TURN SIGNAL AND HAZARD WARNING LAMP
SYSTEM : System Description ...............................
10
PARKING, LICENSE PLATE AND TAIL LAMP
SYSTEM .......................................... ...........................
10
PARKING, LICENSE PLATE AND TAIL LAMP
SYSTEM : System Diagram ................................ ....
11
PARKING, LICENSE PLATE AND TAIL LAMP
SYSTEM : System Description ................................
11
DIAGNOSIS SYSTEM (BCM) (WITH INTELLI-
GENT KEY SYSTEM) .......................................
12
COMMON ITEM ..................................................... ....12
COMMON ITEM : CONSULT Function (BCM -
COMMON ITEM) .....................................................
12
HEADLAMP ........................................................... ....13
HEADLAMP : CONSULT Function (BCM - HEAD
LAMP) ......................................................................
13
FLASHER ............................................................... ....13
FLASHER : CONSULT Function (BCM - FLASH-
ER) ..........................................................................
14
COMB SW .............................................................. ....14
COMB SW : CONSULT Function (BCM - COMB
SW) ..........................................................................
14
BATTERY SAVER ................................................. ....15
BATTERY SAVER : CONSULT Function (BCM -
BATTERY SAVER) ..................................................
15
DIAGNOSIS SYSTEM (BCM) (WITHOUT IN-
TELLIGENT KEY SYSTEM) .............................
16
COMMON ITEM ..................................................... ....16
COMMON ITEM : CONSULT Function (BCM -
COMMON ITEM) .....................................................
16
HEADLAMP ........................................................... ....17
HEADLAMP : CONSULT Function (BCM - HEAD
LAMP) ......................................................................
17
FLASHER ............................................................... ....17
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EXL-2
FLASHER : CONSULT Function (BCM - FLASH-
ER) .........................................................................
17
COMB SW .............................................................. ...18
COMB SW : CONSULT Function (BCM - COMB
SW) .........................................................................
18
BATTERY SAVER ................................................. ...18
BATTERY SAVER : CONSULT Function (BCM -
BATTERY SAVER) .................................................
18
DIAGNOSIS SYSTEM (IPDM E/R) ................. ...20
Diagnosis Description .......................................... ...20
CONSULT Function (IPDM E/R) ............................21
ECU DIAGNOSIS INFORMATION ..............24
BCM, IPDM E/R .............................................. ...24
List of ECU Reference ......................................... ...24
WIRING DIAGRAM .....................................25
HEADLAMP .................................................... ...25
Wiring Diagram - For USA ................................... ...25
Wiring Diagram - For Canada .................................31
DAYTIME LIGHT SYSTEM ............................. ...37
Wiring Diagram .................................................... ...37
FRONT FOG LAMP ...........................................43
Wiring Diagram .................................................... ...43
TURN SIGNAL AND HAZARD WARNING
LAMP SYSTEM .............................................. ...
48
Wiring Diagram .................................................... ...48
PARKING, LICENSE PLATE AND TAIL
LAMPS SYSTEM ............................................ ...
55
Wiring Diagram .................................................... ...55
STOP LAMP ......................................................63
Wiring Diagram .................................................... ...63
BACK-UP LAMP ................................................67
Wiring Diagram .................................................... ...67
BASIC INSPECTION ...................................71
DIAGNOSIS AND REPAIR WORKFLOW ...... ...71
Work Flow ............................................................ ...71
DTC/CIRCUIT DIAGNOSIS ...................... ...74
POWER SUPPLY AND GROUND CIRCUIT .. ...74
BCM (BODY CONTROL SYSTEM) (WITH INTEL-
LIGENT KEY SYSTEM) ..... .......................................
74
BCM (BODY CONTROL S YSTEM) (WITH INTEL-
LIGENT KEY SYSTEM) : Dia gnosis Procedure .....
74
BCM (BODY CONTROL SYST EM) (WITHOUT IN-
TELLIGENT KEY SYSTEM) . ....................................
74
BCM (BODY CONTROL SYSTEM) (WITHOUT
INTELLIGENT KEY SYSTEM) : Diagnosis Proce-
dure ...................................................................... ...
74
IPDM E/R ................................................................ ...75
IPDM E/R : Diagnosis Procedure ............................75
HEADLAMP (HI) CIRCUIT ................................77
Description ........................................................... ...77
Component Function Check ...................................77
Diagnosis Procedure ...............................................77
HEADLAMP (LO) CIRCUIT ...............................79
Description ........................................................... ...79
Component Function Check ...................................79
Diagnosis Procedure ...............................................79
PARKING LAMP CIRCUIT ................................82
Description ........................................................... ...82
Component Function Check ...................................82
Diagnosis Procedure ...............................................82
TURN SIGNAL LAMP CIRCUIT ........................85
Description ........................................................... ...85
Component Function Check ...................................85
Diagnosis Procedure ...............................................85
FRONT FOG LAMP CIRCUIT ...........................88
Component Function Check ................................ ...88
Diagnosis Procedure ...............................................88
Component Inspection ............................................90
SYMPTOM DIAGNOSIS ............................91
EXTERIOR LIGHTING SYSTEM SYMPTOMS ...91
Symptom Table .................................................... ...91
BOTH SIDE HEADLAMPS DO NOT SWITCH
TO HIGH BEAM .................................................
93
Description ........................................................... ...93
Diagnosis Procedure ...............................................93
BOTH SIDE HEADLAMPS (LO) ARE NOT
TURNED ON ......................................................
94
Description ..............................................................94
Diagnosis Procedure ...............................................94
PARKING, LICENSE PLATE AND TAIL
LAMPS ARE NOT TURNED ON .......................
95
Description ........................................................... ...95
Diagnosis Procedure ...............................................95
BOTH SIDE FRONT FOG LAMPS ARE NOT
TURNED ON ......................................................
96
Description ..............................................................96
Diagnosis Procedure ...............................................96
PERIODIC MAINTENANCE .......................97
HEADLAMP AIMING ADJUSTMENT ............ ...97
Inspection ............................................................. ...97
Aiming Adjustment Procedure ................................98
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EXL-8
< SYSTEM DESCRIPTION >
SYSTEM
SYSTEM
HEADLAMP SYSTEM
HEADLAMP SYSTEM : System Diagram INFOID:0000000012432769
System Diagram - For USA
System Diagram - For Canada
HEADLAMP SYSTEM : System DescriptionINFOID:0000000012432770
LOW BEAM OPERATION
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 across 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 f eature can be used any time and also sends a signal to
the BCM. This input is communicated to the IPDM E/R across 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 con-
trols the headlamp high relay coil which supplies power to the high beam headlamps.
The combination meter receives a high beam request signal (ON) through the CAN communication lines and
turns the high beam indicator lamp ON.
EXTERIOR LAMP BATTERY SAVER CONTROL
With the combination switch (lighting and turn signal switch) in the 2nd position and the ignition switch is
turned from ON or ACC to OFF, the battery saver feature is activated.
ALLIA1579GB
ALLIA1580GB
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SYSTEMEXL-9
< SYSTEM DESCRIPTION >
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Under this condition, the headlamps remain illuminated for 45 seconds unless the lighting switch position is
changed. If the lighting switch position is changed, then the headlamps are turned off.
This setting can be changed by CONSULT. Refer to BCS-20, "
HEADLAMP : CONSULT Function (BCM -
HEAD LAMP)" (with Intelligent Key system) or BCS-93, "HEADLAMP : CONSULT Function (BCM - HEAD
LAMP)" (without Intelligent Key system).
DAYTIME RUNNING LIGHT SYSTEM
DAYTIME RUNNING LIGHT SYSTEM : System DiagramINFOID:0000000012432771
DAYTIME RUNNING LIGHT SYST EM : System DescriptionINFOID:0000000012432772
The headlamp system is equipped with a daytime running light control that activates the high beam head-
lamps at approximately half illumination whenever the e ngine is operating. If the parking brake is applied
before the engine is started the daytime running lights will not be illuminated. The daytime running lights will
illuminate once the parking brake is released. Thereaf ter, the daytime running lights will continue to operate
when the parking brake is applied.
OPERATION
The BCM monitors inputs from the parking brake swit ch and the combination switch (lighting and turn signal
switch) to determine when to activate the daytime running light system. The BCM sends a daytime running
light request to the IPDM E/R via the CAN communication lines. The IPDM E/R grounds the daytime running
light relay 1 which in turn, provides power to the LH high beam lamp. Power flows through the LH high beam
lamp to the RH high beam lamp. The high beam lamps are wired in series which causes them to illuminate at
a reduced intensity. When daytime light relay 2 is open, it prevents headlamp low beam from turning on while
daytime running lights are operating.
FRONT FOG LAMP SYSTEM
FRONT FOG LAMP SYSTEM : System DiagramINFOID:0000000012432773
ALLIA1577GB
ALLIA1578GB
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EXL-10
< SYSTEM DESCRIPTION >
SYSTEM
FRONT FOG LAMP SYSTEM : System Description
INFOID:0000000012432774
FRONT FOG LAMP OPERATION
When the combination switch (lighting and turn signal switch) is in front fog lamp ON position and also in 1ST
or 2ND position (headlamp is ON), the BCM detects FR FOG ON and the HEAD LAMP 1 or 2 ON. The BCM
sends a front fog lamp request ON signal through the CAN communication lines to the IPDM E/R. The IPDM
E/R then turns ON the front fog lamp relay sending power to the front fog lamps.
TURN SIGNAL AND HAZARD WARNING LAMP SYSTEM
TURN SIGNAL AND HAZARD WARNING LAMP SYSTEM : System Diagram
INFOID:0000000012432775
TURN SIGNAL AND HAZARD WARNING LA MP SYSTEM : System Description
INFOID:0000000012432776
TURN SIGNAL OPERATION
When the turn signal switch is in LH or RH position with the ignition switch in ON position, the BCM detects the
TURN RH or TURN LH ON request. The BCM outputs the flasher output signal to the respective turn signal
lamp. The BCM sends a turn indicator signal ON request through the CAN communication lines to the combi-
nation meter. The combination meter then activates the appropriate turn signal indicator and audible buzzer.
HAZARD LAMP OPERATION
When the hazard switch is in ON position, the BCM det ects the hazard switch signal ON. The BCM outputs the
flasher output signal (right and left). The BCM sends a hazard indicator signal ON request through the CAN
communication lines to the combination meter. The combination meter then activates the hazard indicator and
audible buzzer.
REMOTE KEYLESS ENTRY OPERATION
The remote keyless entry receiver transmits hazard lamp signal to BCM, then BCM controls hazard lamps.
Refer to DLK-25, "
REMOTE KEYLESS ENTRY FUNCTION : System Description" (with Intelligent Key sys-
tem) or DLK-199, "
REMOTE KEYLESS ENTRY SYSTEM : System Description" (without Intelligent Key sys-
tem).
PARKING, LICENSE PLATE AND TAIL LAMP SYSTEM
AWLIA1721GB
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SYSTEMEXL-11
< SYSTEM DESCRIPTION >
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PARKING, LICENSE PLATE AND TAIL LAMP SYSTEM : System DiagramINFOID:0000000012432777
PARKING, LICENSE PLATE AND TAIL LA MP SYSTEM : System Description
INFOID:0000000012432778
PARKING, LICENSE PLATE AND TAIL LAMPS OPERATION
When the combination switch (lighting and turn signal s witch) is in 1st position, BCM detects the LIGHTING
SWITCH 1st POSITION ON. The BCM sends a parking light ON request through the CAN communication
lines to the IPDM E/R. The IPDM E/R then activates the tail lamp relay which sends power to the parking and
instrument illumination circuits.
EXTERIOR LAMP BATTERY SAVER CONTROL
With the combination switch (lighting and turn signal switch) in the 2nd position and the ignition switch is
turned from ON or ACC to OFF, the battery saver feature is activated.
Under this condition, the headlamps remain illuminated for 5 minutes unless the lighting switch position is
changed. If the lighting switch position is changed, then the headlamps are turned off.
This setting can be changed by CONSULT. Refer to BCS-26, "
BATTERY SAVER : CONSULT Function (BCM
- BATTERY SAVER)" (with Intelligent Key system) or BCS-97, "BATTERY SAVER : CONSULT Function (BCM
- BATTERY SAVER)" (without Intelligent Key system).
ALLIA1562GB
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EXL-78
< DTC/CIRCUIT DIAGNOSIS >
HEADLAMP (HI) CIRCUIT
Is the inspection result normal?
YES >> GO TO 5.
NO >> GO TO 4.
4.CHECK HEADLAMP (HI) CIRCUIT FOR OPEN
1. Turn the ignition switch OFF.
2. Disconnect IPDM E/R connector E45.
3. Check continuity between the IPDM E/R harness connector E45 and the front combination lamp harness connector E25 or E26.
Is the inspection result normal?
YES >> Replace IPDM E/R. Refer to PCS-30, "Removal and Installation".
NO >> Repair or replace the harness or connector.
5.CHECK FRONT COMBINATION LAMP (HI) GROUND CIRCUIT
Check continuity between the front combination lamp harness connector and ground.
Is the inspection result normal?
YES >> Replace malfunctioning lamp.
NO >> Repair or replace the harness or c onnector (without daytime running light system).
>> GO TO 6 (with daytime running light system).
6.CHECK FRONT COMBINATION LAMP LH TO DA YTIME RUNNING LIGHT RELAY 1 GROUND CIRCUIT
1. Disconnect daytime running light relay 1 connector E37.
2. Check continuity between the daytime running light relay 1 harness connector E37 and the front combina- tion lamp LH harness connector E25.
Is the inspection result normal?
YES >> GO TO 7.
NO >> Repair or replace the harness or connector.
7.CHECK DAYTIME RUNNING LIGHT RELAY 1 GROUND CIRCUIT
Check continuity between the daytime running light relay 1 harness connector E37 and ground.
Is the inspection result normal?
YES >> Replace daytime running light relay 1.
NO >> Repair or replace the harness or connector.
(+) (−)Voltage
Connector Terminal
LH E25
1 Ground Battery voltage
RH E26
Connector TerminalConnector Terminal Continuity
LH E45 25
E25
1Y es
RH 27E26
Connector Terminal —Continuity
LH E25
2G ro un dY es
RH E26
Connector TerminalConnector Terminal Continuity
E37 3E25 2Yes
Connector Terminal —Continuity
E37 4Ground Yes
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HEADLAMP (LO) CIRCUITEXL-79
< DTC/CIRCUIT DIAGNOSIS >
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HEADLAMP (LO) CIRCUIT
DescriptionINFOID:0000000012432807
The IPDM E/R (intelligent power distribution modul e engine room) controls the headlamp low relay based on
inputs from the BCM via the CAN communication li nes. When the headlamp low relay is energized, power
flows through fuses 40 and 41, located in the IPDM E/R.
(Without daytime running light system) power then flow s to the front combination lamp LH and RH low beams.
(With daytime running light system) power then flows to the front combination lamp LH low beam and the day-
time running light relay 2 which becomes energized and t hen power is sent to the front combination lamp RH
low beam.
Component Function CheckINFOID:0000000012432808
1.CHECK HEADLAMP (LO) OPERATION
WITHOUT CONSULT
1. Start IPDM E/R auto active test. Refer to PCS-9, "
Diagnosis Description".
2. Check that the headlamp is turned ON.
CONSULT
1. Select EXTERNAL LAMPS of IP DM E/R active test item.
2. While operating the test items, check that the headlamp is turned ON.
Is the headlamp turned ON?
YES >> Headlamp (LO) is normal.
NO >> Refer to EXL-79, "
Diagnosis Procedure".
Diagnosis ProcedureINFOID:0000000012432809
Regarding Wiring Diagram information, refer to EXL-25, "Wiring Diagram - For USA" or EXL-31, "Wiring Dia-
gram - For Canada".
1.CHECK HEADLAMP (LO) FUSES
1. Turn the ignition switch OFF.
2. Check that the following fuses are not blown:
Is the fuse blown?
YES >> Replace the blown fuse after repairing the affected circuit.
NO >> GO TO 2.
2.CHECK LOW BEAM BULB
Check the applicable low beam bulb to be sure the proper bulb standard is in use and the bulb is not open.
Is the bulb OK?
YES >> GO TO 3.
NO >> Replace the bulb.
3.CHECK HEADLAMP (LO) OUTPUT VOLTAGE
1. Turn the ignition switch OFF.
2. Disconnect the front combination lamp connector E25 or E26.
3. Turn the ignition switch ON. LO : Headlamp ON
OFF : Headlamp OFF
Unit
LocationFuse No.Capacity
Headlamp LO (L H) IPDM E/R 4115A
Headlamp LO (RH) IPDM E/R4015A
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