NISSAN TEANA 2008 Service Manual

EXL-2
COMMON ITEM ........................................................27
COMMON ITEM : CONSULT-III Function (BCM -
COMMON ITEM) ....................................................
27
HEADLAMP ..............................................................28
HEADLAMP : CONSULT-III Function (BCM -
HEAD LAMP) ..........................................................
28
FLASHER ..................................................................30
FLASHER : CONSULT-III Function (BCM -
FLASHER) ..............................................................
30
DIAGNOSIS SYSTEM (IPDM E/R) ....................32
Diagnosis Description .............................................32
CONSULT-III Function (IPDM E/R) ........................34
DIAGNOSIS SYSTEM (HEADLAMP LEVEL-
IZER) ..................................................................
37
CONSULT-III Functions (HEADLAMP LEVELIZ-
ER) .........................................................................
37
COMPONENT DIAGNOSIS ........................38
B2080 ECU TROUBLE ......................................38
Description ..............................................................38
DTC Logic ...............................................................38
Diagnosis Procedure ..............................................38
B2081 INITIAL NOT DONE ...............................39
DTC Logic ...............................................................39
Diagnosis Procedure ..............................................39
B2082 SENSOR OUT OF RANGE ....................40
DTC Logic ...............................................................40
Diagnosis Procedure ..............................................40
B2083 SEN SIG NOT PLAUSIBLE ...................41
DTC Logic ...............................................................41
Diagnosis Procedure ..............................................41
B2084 VOLTAGE UNDER LIMIT ......................42
DTC Logic ...............................................................42
Diagnosis Procedure ..............................................42
B2085 LOWBEAM SIG OPEN LINE .................43
Description ..............................................................43
DTC Logic ...............................................................43
Diagnosis Procedure ..............................................43
B2086 FRQ. OVER LIMIT ..................................45
Description ..............................................................45
DTC Logic ...............................................................45
Diagnosis Procedure ..............................................45
B2087 SHORT TO GROUND ............................47
DTC Logic ...............................................................47
Diagnosis Procedure ..............................................47
B2088 SHORT TO BATTERY ...........................48
DTC Logic ...............................................................48
Diagnosis Procedure ..............................................48
B208A PARA NOT PROG .................................49
DTC Logic ...............................................................49
Diagnosis Procedure ...............................................49
POWER SUPPLY AND GROUND CIRCUIT .....50
BCM (BODY CONTROL MODULE) ..........................50
BCM (BODY CONTROL MODULE) : Diagnosis
Procedure ...............................................................
50
IPDM E/R (INTELLIGENT POWER DISTRIBU-
TION MODULE ENGINE ROOM) ..............................
50
IPDM E/R (INTELLIGENT POWER DISTRIBU-
TION MODULE ENGINE ROOM) : Diagnosis Pro-
cedure .....................................................................
50
AUTO LEVELIZER CONTROL UNIT ........................51
AUTO LEVELIZER CONTROL UNIT : Diagnosis
Procedure ...............................................................
51
EXTERIOR LAMP FUSE ...................................53
Description ..............................................................53
Diagnosis Procedure ...............................................53
HEADLAMP (HI) CIRCUIT ................................54
Component Function Check ...................................54
Diagnosis Procedure ...............................................54
HEADLAMP (LO) CIRCUIT ...............................56
Component Function Check ...................................56
Diagnosis Procedure ...............................................56
XENON HEADLAMP .........................................58
Description ..............................................................58
Diagnosis Procedure ...............................................58
HEADLAMP LEVELIZER CIRCUIT ..................60
Description ..............................................................60
Component Function Check ...................................60
Diagnosis Procedure ...............................................60
FRONT FOG LAMP CIRCUIT ...........................62
Component Function Check ...................................62
Diagnosis Procedure ...............................................62
PARKING LAMP CIRCUIT ................................64
Component Function Check ...................................64
Diagnosis Procedure ...............................................64
TURN SIGNAL LAMP CIRCUIT ........................66
Description ..............................................................66
Component Function Check ...................................66
Diagnosis Procedure ...............................................66
OPTICAL SENSOR ...........................................69
Description ..............................................................69
Component Function Check ...................................69
Diagnosis Procedure ...............................................69
HAZARD SWITCH .............................................72
Component Function Check ...................................72
Diagnosis Procedure ...............................................72

EXL-3
C
D
E
F
G
H
I
J
K
MA
B
EXL
N
O
P
TAIL LAMP CIRCUIT .........................................74
Component Function Check ....................................74
Diagnosis Procedure ...............................................74
LICENSE PLATE LAMP CIRCUIT .....................76
Component Function Check ....................................76
Diagnosis Procedure ...............................................76
REAR FOG LAMP CIRCUIT ..............................77
Component Function Check ....................................77
Diagnosis Procedure ...............................................77
HEADLAMP SYSTEM ........................................79
Wiring Diagram - HEADLAMP - ..............................79
AUTO LIGHT SYSTEM ......................................83
Wiring Diagram - AUTO LIGHT SYSTEM - .............83
FRONT FOG LAMP SYSTEM ............................87
Wiring Diagram - FRONT FOG LAMP - ..................87
TURN SIGNAL AND HAZARD WARNING
LAMP SYSTEM ..................................................
90
Wiring Diagram - TURN AND HAZARD WARN-
ING LAMPS - ..........................................................
90
PARKING, LICENSE PLATE AND TAIL
LAMPS SYSTEM ................................................
95
Wiring Diagram - PARKING, LICENSE PLATE
AND TAIL LAMPS - .................................................
95
STOP LAMP .......................................................99
Wiring Diagram - STOP LAMP - .............................99
BACK-UP LAMP ..............................................102
Wiring Diagram - BACK-UP LAMP - .....................102
REAR FOG LAMP SYSTEM ............................105
Wiring Diagram - REAR FOG LAMP - ..................105
ECU DIAGNOSIS .......................................108
BCM (BODY CONTROL MODULE) .................108
Reference Value ...................................................108
Wiring Diagram - BCM - ........................................131
Fail-safe ................................................................137
DTC Inspection Priority Chart .............................139
DTC Index ............................................................140
IPDM E/R (INTELLIGENT POWER DISTRI-
BUTION MODULE ENGINE ROOM) ...............
142
Reference Value ...................................................142
Wiring Diagram - IPDM E/R - ................................150
Fail-safe ................................................................153
DTC Index ............................................................155
AUTO LEVELIZER CONTROL UNIT ...............156
Reference Value ...................................................156
Wiring Diagram — HEADLAMP AIMING CON-
TROL SYSTEM — ................................................
158
Fail-safe ................................................................161
DTC Inspection Priority Chart ...............................162
DTC Index .............................................................163
SYMPTOM DIAGNOSIS ............................164
EXTERIOR LIGHTING SYSTEM SYMPTOMS .164
Symptom Table .....................................................164
NORMAL OPERATING CONDITION .............167
Description .............................................................167
BOTH SIDE HEADLAMPS (HI) ARE NOT
TURNED ON ...................................................
168
Description .............................................................168
Diagnosis Procedure .............................................168
BOTH SIDE HEADLAMPS (LO) ARE NOT
TURNED ON ...................................................
169
Description .............................................................169
Diagnosis Procedure .............................................169
PARKING, LICENSE PLATE AND TAIL
LAMPS ARE NOT TURNED ON .....................
170
Description .............................................................170
Diagnosis Procedure .............................................170
BOTH SIDE FRONT FOG LAMPS ARE NOT
TURNED ON ...................................................
171
Description .............................................................171
Diagnosis Procedure .............................................171
PRECAUTION ............................................172
PRECAUTIONS ...............................................172
Precaution for Supplemental Restraint System
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" ...............................................................
172
Precautions For Xenon Headlamp Service ...........172
ON-VEHICLE MAINTENANCE ..................173
HEADLAMP AIMING ADJUSTMENT .............173
Description .............................................................173
Aiming Adjustment Procedure (Low Beam) ...........174
Aiming Adjustment Procedure (High Beam) ..........175
FRONT FOG LAMP AIMING ADJUSTMENT .178
Description .............................................................178
Aiming Adjustment Procedure ...............................178
ON-VEHICLE REPAIR ...............................180
FRONT COMBINATION LAMP ......................180
Exploded View .......................................................180
Removal and Installation .......................................181
Replacement .........................................................181
Disassembly and Assembly ...................................182
FRONT FOG LAMP ........................................183
Exploded View .......................................................183
Removal and Installation .......................................183
Replacement .........................................................183

EXL-4
OPTICAL SENSOR .........................................185
Exploded View .......................................................185
Removal and Installation .......................................185
LIGHTING & TURN SIGNAL SWITCH ............186
Exploded View .......................................................186
Removal and Installation .......................................186
HAZARD SWITCH ...........................................187
Exploded View .......................................................187
Removal and Installation .......................................187
SIDE TURN SIGNAL LAMP ............................188
Exploded View .......................................................188
Removal and Installation .......................................188
AUTO LEVELIZER CONTROL UNIT ..............190
Exploded View .......................................................190
Removal and Installation .......................................190
REAR COMBINATION LAMP .........................191
Exploded View .......................................................191
Removal and Installation .......................................191
Replacement .........................................................192
HIGH-MOUNTED STOP LAMP .......................193
Exploded View .......................................................193
Removal and Installation .......................................193
REAR FOG LAMP ...........................................194
Exploded View .......................................................194
Removal and Installation .......................................194
Replacement .........................................................194
LICENSE PLATE LAMP ..................................195
Exploded View .......................................................195
Removal and Installation .......................................195
Replacement .........................................................195
SERVICE DATA AND SPECIFICATIONS
(SDS) ..........................................................
197
SERVICE DATA AND SPECIFICATIONS
(SDS) ................................................................
197
Bulb Specifications ................................................197
HALOGEN TYPE
BASIC INSPECTION ..................................
198
DIAGNOSIS AND REPAIR WORKFLOW .......198
Work Flow ..............................................................198
FUNCTION DIAGNOSIS ............................200
HEADLAMP SYSTEM .....................................200
System Diagram ....................................................200
System Description ................................................200
Component Parts Location ....................................201
Component Description ........................................201
AUTO LIGHT SYSTEM ....................................202
System Diagram ....................................................202
System Description ...............................................202
Component Parts Location ...................................203
Component Description ........................................203
FRONT FOG LAMP SYSTEM ..........................204
System Diagram ...................................................204
System Description ...............................................204
Component Parts Location ...................................205
Component Description ........................................205
TURN SIGNAL AND HAZARD WARNING
LAMP SYSTEM ................................................
206
System Diagram ...................................................206
System Description ...............................................206
Component Parts Location ...................................207
Component Description ........................................207
PARKING, LICENSE PLATE AND TAIL
LAMPS SYSTEM ..............................................
208
System Diagram ...................................................208
System Description ...............................................208
Component Parts Location ...................................209
Component Description ........................................209
REAR FOG LAMP SYSTEM ............................210
System Diagram ...................................................210
System Description ...............................................210
Component Parts Location ...................................211
Component Description ........................................211
EXTERIOR LAMP BATTERY SAVER SYS-
TEM ...................................................................
212
System Diagram ...................................................212
System Description ...............................................212
Component Parts Location ...................................213
Component Description ........................................213
DIAGNOSIS SYSTEM (BCM) ...........................214
COMMON ITEM .......................................................214
COMMON ITEM : CONSULT-III Function (BCM -
COMMON ITEM) ..................................................
214
HEADLAMP .............................................................215
HEADLAMP : CONSULT-III Function (BCM -
HEAD LAMP) ........................................................
215
FLASHER ................................................................217
FLASHER : CONSULT-III Function (BCM -
FLASHER) ............................................................
217
DIAGNOSIS SYSTEM (IPDM E/R) ...................219
Diagnosis Description ...........................................219
CONSULT-III Function (IPDM E/R) ......................221
COMPONENT DIAGNOSIS ......................224
POWER SUPPLY AND GROUND CIRCUIT ....224
BCM (BODY CONTROL MODULE) ........................224
BCM (BODY CONTROL MODULE) : Diagnosis
Procedure .............................................................
224

EXL-5
C
D
E
F
G
H
I
J
K
MA
B
EXL
N
O
P IPDM E/R (INTELLIGENT POWER DISTRIBU-
TION MODULE ENGINE ROOM) ............................
224
IPDM E/R (INTELLIGENT POWER DISTRIBU-
TION MODULE ENGINE ROOM) : Diagnosis Pro-
cedure ...................................................................
224
EXTERIOR LAMP FUSE ..................................226
Description ............................................................226
Diagnosis Procedure .............................................226
HEADLAMP (HI) CIRCUIT ...............................227
Component Function Check ..................................227
Diagnosis Procedure .............................................227
HEADLAMP (LO) CIRCUIT ..............................229
Component Function Check ..................................229
Diagnosis Procedure .............................................229
FRONT FOG LAMP CIRCUIT ..........................231
Component Function Check ..................................231
Diagnosis Procedure .............................................231
PARKING LAMP CIRCUIT ...............................233
Component Function Check ..................................233
Diagnosis Procedure .............................................233
TURN SIGNAL LAMP CIRCUIT .......................235
Description ............................................................235
Component Function Check ..................................235
Diagnosis Procedure .............................................235
OPTICAL SENSOR ..........................................238
Description ............................................................238
Component Function Check ..................................238
Diagnosis Procedure .............................................238
HAZARD SWITCH ............................................241
Component Function Check ..................................241
Diagnosis Procedure .............................................241
TAIL LAMP CIRCUIT .......................................243
Component Function Check ..................................243
Diagnosis Procedure .............................................243
LICENSE PLATE LAMP CIRCUIT ...................245
Component Function Check ..................................245
Diagnosis Procedure .............................................245
REAR FOG LAMP CIRCUIT ............................246
Component Function Check ..................................246
Diagnosis Procedure .............................................246
HEADLAMP SYSTEM ......................................248
Wiring Diagram - HEADLAMP - ............................248
AUTO LIGHT SYSTEM ....................................252
Wiring Diagram - AUTO LIGHT SYSTEM - ...........252
HEADLAMP AIMING CONTROL SYSTEM
(MANUAL) ........................................................
256
Description ............................................................256
Wiring Diagram - HEADLAMP AIMING CON-
TROL SYSTEM (MANUAL) - .................................
256
Component Inspection ...........................................257
FRONT FOG LAMP SYSTEM .........................259
Wiring Diagram - FRONT FOG LAMP - ................259
TURN SIGNAL AND HAZARD WARNING
LAMP SYSTEM ...............................................
262
Wiring Diagram - TURN AND HAZARD WARN-
ING LAMPS - .........................................................
262
PARKING, LICENSE PLATE AND TAIL
LAMPS SYSTEM ............................................
267
Wiring Diagram - PARKING, LICENSE PLATE
AND TAIL LAMPS - ...............................................
267
STOP LAMP ....................................................271
Wiring Diagram - STOP LAMP - ............................271
BACK-UP LAMP .............................................274
Wiring Diagram - BACK-UP LAMP - ......................274
REAR FOG LAMP SYSTEM ...........................277
Wiring Diagram - REAR FOG LAMP - ...................277
ECU DIAGNOSIS .......................................280
BCM (BODY CONTROL MODULE) ...............280
Reference Value ....................................................280
Wiring Diagram - BCM - ........................................303
Fail-safe .................................................................309
DTC Inspection Priority Chart .............................311
DTC Index .............................................................312
IPDM E/R (INTELLIGENT POWER DISTRI-
BUTION MODULE ENGINE ROOM) ..............
314
Reference Value ....................................................314
Wiring Diagram - IPDM E/R - ................................322
Fail-safe .................................................................325
DTC Index .............................................................327
SYMPTOM DIAGNOSIS ............................328
EXTERIOR LIGHTING SYSTEM SYMPTOMS .328
Symptom Table .....................................................328
BOTH SIDE HEADLAMPS (HI) ARE NOT
TURNED ON ...................................................
331
Description .............................................................331
Diagnosis Procedure .............................................331
BOTH SIDE HEADLAMPS (LO) ARE NOT
TURNED ON ...................................................
332
Description .............................................................332
Diagnosis Procedure .............................................332
PARKING, LICENSE PLATE AND TAIL
LAMPS ARE NOT TURNED ON .....................
333
Description .............................................................333
Diagnosis Procedure .............................................333

EXL-6
BOTH SIDE FRONT FOG LAMPS ARE NOT
TURNED ON ....................................................
334
Description .............................................................334
Diagnosis Procedure .............................................334
PRECAUTION ............................................335
PRECAUTIONS ...............................................335
Precaution for Supplemental Restraint System
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" ................................................................
335
ON-VEHICLE MAINTENANCE ..................336
HEADLAMP AIMING ADJUSTMENT .............336
Description .............................................................336
Aiming Adjustment Procedure (Low Beam) ...........337
Aiming Adjustment Procedure (High Beam) ..........338
FRONT FOG LAMP AIMING ADJUSTMENT .341
Description .............................................................341
Aiming Adjustment Procedure ...............................341
ON-VEHICLE REPAIR ...............................343
FRONT COMBINATION LAMP .......................343
Exploded View .......................................................343
Removal and Installation .......................................343
Replacement .........................................................344
Disassembly and Assembly ...................................344
FRONT FOG LAMP .........................................346
Exploded View .......................................................346
Removal and Installation .......................................346
Replacement .........................................................346
OPTICAL SENSOR .........................................348
Exploded View .......................................................348
Removal and Installation .......................................348
LIGHTING & TURN SIGNAL SWITCH ............349
Exploded View ......................................................349
Removal and Installation .......................................349
HEADLAMP AIMING SWITCH .........................350
Exploded View ......................................................350
Removal and Installation .......................................350
HAZARD SWITCH ............................................351
Exploded View ......................................................351
Removal and Installation .......................................351
SIDE TURN SIGNAL LAMP .............................352
Exploded View ......................................................352
Removal and Installation .......................................352
REAR COMBINATION LAMP ..........................354
Exploded View ......................................................354
Removal and Installation .......................................354
Replacement .........................................................355
HIGH-MOUNTED STOP LAMP ........................356
Exploded View ......................................................356
Removal and Installation .......................................356
REAR FOG LAMP ............................................357
Exploded View ......................................................357
Removal and Installation .......................................357
Replacement .........................................................357
LICENSE PLATE LAMP ...................................358
Exploded View ......................................................358
Removal and Installation .......................................358
Replacement .........................................................358
SERVICE DATA AND SPECIFICATIONS
(SDS) .........................................................
360
SERVICE DATA AND SPECIFICATIONS
(SDS) ................................................................
360
Bulb Specifications ................................................360

DIAGNOSIS AND REPAIR WORKFLOW
EXL-7
< BASIC INSPECTION >[XENON TYPE]
C
D
E
F
G
H
I
J
K
MA
B
EXL
N
O
P
BASIC INSPECTION
DIAGNOSIS AND REPAIR WORKFLOW
Work FlowINFOID:0000000003773518
OVERALL SEQUENCE
DETAILED FLOW
1.INTERVIEW FOR MALFUNCTION
Interview the symptom to the customer.
JPLIA0313GB

EXL-8
< BASIC INSPECTION >[XENON TYPE]
DIAGNOSIS AND REPAIR WORKFLOW
>> GO TO 2.
2.SYMPTOM CHECK
Check the symptom from the customer's information.
>> GO TO 3.
3.BASIC INSPECTION
Check the operation of each part. Check that any symptom occurs other than the interviewed symptom.
>> 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
Check that the symptom is applied to the 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 that 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 10.
10.REPAIR CHECK (SELF-DIAGNOSIS WITH CONSULT-III)
Perform the self-diagnosis with CONSULT-III. Check that any DTC is not detected. Erase DTC if DTC is
detected before the repair. Check that DTC is not detected again.
Is any DTC detected?
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.

INSPECTION AND ADJUSTMENT
EXL-9
< BASIC INSPECTION >[XENON TYPE]
C
D
E
F
G
H
I
J
K
MA
B
EXL
N
O
P
INSPECTION AND ADJUSTMENT
ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT
ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT : Description
INFOID:0000000003894984
CAUTION:
• When replacing the auto levelizer control unit, you must perform “WRITE CONFIGURATION” with
CONSULT-III.
- Complete the procedure of “WRITE CONFIGURATION” in order.
 When replacing the auto levelizer control unit, perform “SENSOR INITIALIZE” with CONSULT-III.
ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT : Special Repair Re-
quirement
INFOID:0000000003894985
1.WRITING VEHICLE SPECIFICATION
CONSULT-III Configuration
Perform “WRITE CONFIGURATION” to write vehicle specification. Refer to EXL-9, "
CONFIGURATION
(HEADLAMP LEVELIZER) : Special Repair Requirement".
>> GO TO 2.
2.SENSOR INITIALIZE
CONSULT-III Work support
Perform “SENSOR INITIALIZE”. Refer to EXL-10, "
SENSOR INITIALIZE : Special Repair Requirement
(HEADLAMP AIMING CONTROL SYSTEM)".
>> WORK END
CONFIGURATION (HEADLAMP LEVELIZER)
CONFIGURATION (HEADLAMP LEVELIZER) : DescriptionINFOID:0000000003894986
Vehicle specification needs to be written with CONSULT-III because it is not written after replacing the auto
levelizer control unit.
CAUTION:
 When replacing the auto levelizer control unit, you must perform “WRITE CONFIGURATION” with
CONSULT-III.
 Complete the procedure of “WRITE CONFIGURATION” in order.
CONFIGURATION (HEADLAMP LEVELIZER) : Special Repair Requirement
INFOID:0000000003894987
1.WRITE CONFIGURATION
CONSULT-III Configuration
1. Select “WRITE CONFIGURATION”.
2. Select “Setting change”.
3. When “COMMAND FINISHED”, select “END”.
>> WORK END
SENSOR INITIALIZE
Function Description
WRITE CONFIGURATION Writes the vehicle configuration automatically.

EXL-10
< BASIC INSPECTION >[XENON TYPE]
INSPECTION AND ADJUSTMENT
SENSOR INITIALIZE : Description
INFOID:0000000003774311
HEADLAMP AIMING CONTROL SYSTEM
Perform the sensor initialize when installing, removing and replacing the auto levelizer control unit and sus-
pension components.
SENSOR INITIALIZE : Special Repair Requirement (HEADLAMP AIMING CONTROL
SYSTEM)
INFOID:0000000003774312
1.VEHICLE CONDITION CHECK
1. Park the vehicle in the straight-forward position.
2. Unload the vehicle (no passenger aboard).
>> GO TO 2.
2.SENSOR INITIALIZE
CONSULT-III WORK SUPPORT
1. Select "SENSOR INITIALIZE" of HEADLAMP LEVELIZER work support item.
2. Select "START".
3. When "INITIALIZE COMPLETE", select "END".
CAUTION:
If "INITIALIZE NOT DONE" is indicated, auto levelizer control unit detects that the sensor lever sig-
nal changes. The sensor initialize is cancelled. In this case, turn the ignition switch OFF to prevent
the vehicle from the height change. Perform the sensor initialize again.
Is the sensor initialize completed?
YES >> GO TO 3.
NO >> Perform the sensor initialize again.
3.SELF-DIAGNOSIS RESULT CHECK
Perform the self-diagnosis with CONSULT-III. Check that any DTC is not detected.
Is any DTC detected?
YES >> GO TO 2.
NO >> Sensor initialize completed

HEADLAMP SYSTEM
EXL-11
< FUNCTION DIAGNOSIS >[XENON TYPE]
C
D
E
F
G
H
I
J
K
MA
B
EXL
N
O
P
FUNCTION DIAGNOSIS
HEADLAMP SYSTEM
System DiagramINFOID:0000000003774356
System DescriptionINFOID:0000000003774357
OUTLINE
Headlamp is controlled by combination switch reading function and headlamp control function of BCM, and
relay control function of IPDM E/R.
HEADLAMP (LO) OPERATION
 BCM detects the combination switch condition with the combination switch reading function.
 BCM transmits the low beam request signal to IPDM E/R with CAN communication according to the head-
lamp (LO) ON condition.
Headlamp (LO) ON condition- Lighting switch 2ND
- Lighting switch AUTO (auto light function ON judgment)
 IPDM E/R turns the integrated headlamp low relay ON, and turns the headlamp ON according to the low
beam request signal.
HEADLAMP (HI) OPERATION
 BCM transmits the high beam request signal to IPDM E/R and the combination meter with CAN communica-
tion according to the headlamp (HI) ON condition.
Headlamp (HI) ON condition- Lighting switch HI with the lighting switch 2ND or AUTO (auto light function ON judgment)
- Lighting switch PASS
 Combination meter turns the high beam indicator lamp ON according to the high beam request signal.
 IPDM E/R turns the integrated headlamp high relay ON, and turns the headlamp ON according to the high
beam request signal.
JPLIA0168GB