fog light NISSAN TEANA 2008 Owner's Manual

ELECTRICAL LOAD SIGNAL
EC-329
< COMPONENT DIAGNOSIS >[VQ25DE, VQ35DE]
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ELECTRICAL LOAD SIGNAL
DescriptionINFOID:0000000003856832
The electrical load signal (Headlamp switch signal, rear window defogger switch signal, etc.) is transferred
through the CAN communication line from BCM to ECM via IPDM E/R.
Component Function CheckINFOID:0000000003856833
1.CHECK REAR WINDOW DEFOGGER SWITCH FUNCTION
1. Turn ignition switch ON.
2. Connect CONSULT-III and select “DATA MONITOR” mode.
3. Select “LOAD SIGNAL” and check indication under the following conditions.
Is the inspection result normal?
YES >> GO TO 2.
NO >> Go to EC-329, "
Diagnosis Procedure".
2.CHECK LIGHTING SWITCH FUNCTION
Check “LOAD SIGNAL” indication under the following conditions.
Is the inspection result normal?
YES >> GO TO 3.
NO >> Go to EC-329, "
Diagnosis Procedure".
3.CHECK HEATER FAN CONTROL SWITCH FUNCTION
Select “HEATER FAN SW” and check indication under the following conditions.
Is the inspection result normal?
YES >> INSPECTION END
NO >> Go to EC-329, "
Diagnosis Procedure".
Diagnosis ProcedureINFOID:0000000003856834
1.INSPECTION START
Confirm the malfunctioning circuit (rear window defogger, headlamp or heater fan). Refer to EC-329, "
Compo-
nent Function Check".
Which circuit is related to the incident?
Rear window defogger>>GO TO 2.
Headlamp>>GO TO 3.
Heater fan>>GO TO 4.
2.CHECK REAR WINDOW DEFOGGER SYSTEM
Refer to DEF-3, "
Work Flow".
Monitor item Condition Indication
LOAD SIGNAL Rear window defogger switchON ON
OFF OFF
Monitor item Condition Indication
LOAD SIGNAL Lighting switchON at 2nd position ON
OFF OFF
Monitor item Condition Indication
HEATER FAN SW Heater fan control switchON ON
OFF OFF

EC-358
< ECU DIAGNOSIS >[VQ25DE, VQ35DE]
ECM
TP SEN 1-B1 Ignition switch: ON
(Engine stopped)
 Selector lever: DAccelerator pedal: Fully released More than 0.36 V
Accelerator pedal: Fully depressed Less than 4.75 V
TP SEN 2-B1*
1 Ignition switch: ON
(Engine stopped)
 Selector lever: DAccelerator pedal: Fully released More than 0.36 V
Accelerator pedal: Fully depressed Less than 4.75 V
INT/A TEMP SE  Ignition switch: ONIndicates intake air tempera-
ture
START SIGNAL  Ignition switch: ON → START → ON OFF → ON → OFF
CLSD THL POS Ignition switch: ON
(Engine stopped)Accelerator pedal: Fully released ON
Accelerator pedal: Slightly depressed OFF
AIR COND SIG Engine: After warming up, idle the
engineAir conditioner switch: OFF OFF
Air conditioner switch: ON
(Compressor operates.)ON
P/N POSI SW  Ignition switch: ONSelector lever: P or N ON
Selector lever: Except above OFF
PW/ST SIGNAL Engine: After warming up, idle the
engineSteering wheel: Not being turned OFF
Steering wheel: Being turned ON
LOAD SIGNAL  Ignition switch: ONRear window defogger switch: ON
and/or
Lighting switch: 2nd positionON
Rear window defogger switch and lighting
switch: OFFOFF
IGNITION SW  Ignition switch: ON → OFF → ON ON → OFF → ON
HEATER FAN SW Engine: After warming up, idle the
engineHeater fan switch: ON ON
Heater fan switch: OFF OFF
BRAKE SW  Ignition switch: ONBrake pedal: Fully released OFF
Brake pedal: Slightly depressed ON
INJ PULSE-B1 Engine: After warming up
 Selector lever: P or N
 Air conditioner switch: OFF
No loadIdle 2.0 - 3.0 msec
2,000 rpm 1.9 - 2.9 msec
INJ PULSE-B2 Engine: After warming up
 Selector lever: P or N
 Air conditioner switch: OFF
No loadIdle 2.0 - 3.0 msec
2,000 rpm 1.9 - 2.9 msec
IGN TIMING Engine: After warming up
 Selector lever: P or N
 Air conditioner switch: OFF
No loadIdle 7° - 17° BTDC
2,000 rpm 25° - 45° BTDC
CAL/LD VALUE Engine: After warming up
 Selector lever: P or N
 Air conditioner switch: OFF
No loadIdle 5% - 35%
2,500 rpm 5% - 35%
MASS AIRFLOW Engine: After warming up
 Selector lever: P or N
 Air conditioner switch: OFF
No loadIdle 2.0 - 6.0 g·m/s
2,500 rpm 7.0 - 20.0 g·m/s
PURG VOL C/V Engine: After warming up
 Selector lever: P or N
 Air conditioner switch: OFF
No loadIdle
(Accelerator pedal: Not depressed even
slightly, after engine starting.)0%
2,000 rpm — Monitor Item Condition Values/Status

EXL-1
DRIVER CONTROLS
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SECTION EXL
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CONTENTS
EXTERIOR LIGHTING SYSTEM
XENON TYPE
BASIC INSPECTION ....... .............................
7
DIAGNOSIS AND REPAIR WORKFLOW ..... .....7
Work Flow ........................................................... ......7
INSPECTION AND ADJUSTMENT .....................9
ADDITIONAL SERVICE WHEN REPLACING
CONTROL UNIT .................................................... ......
9
ADDITIONAL SERVICE WHEN REPLACING
CONTROL UNIT : Description ..................................
9
ADDITIONAL SERVICE WHEN REPLACING
CONTROL UNIT : Special Repair Requirement .......
9
CONFIGURATION (HEADLAMP LEVELIZER) .... ......9
CONFIGURATION (HEADLAMP LEVELIZER) :
Description ................................................................
9
CONFIGURATION (HEADLAMP LEVELIZER) :
Special Repair Requirement .....................................
9
SENSOR INITIALIZE ............................................. ......9
SENSOR INITIALIZE : Description .........................10
SENSOR INITIALIZE : Special Repair Require-
ment (HEADLAMP AIMING CONTROL SYSTEM)
....
10
FUNCTION DIAGNOSIS ..............................11
HEADLAMP SYSTEM .................................... ....11
System Diagram .................................................. ....11
System Description .................................................11
Component Parts Location ......................................12
Component Description ..........................................12
AUTO LIGHT SYSTEM ......................................13
System Diagram .................................................. ....13
System Description .................................................13
Component Parts Location ......................................14
Component Description ..........................................14
HEADLAMP AIMING CONTROL SYSTEM
(AUTO) ..............................................................
15
System Diagram .................................................. ....15
System Description ..................................................15
Component Parts Location ......................................16
Component Description ...........................................16
FRONT FOG LAMP SYSTEM ...........................17
System Diagram ......................................................17
System Description ..................................................17
Component Parts Location ......................................18
Component Description ..........................................18
TURN SIGNAL AND HAZARD WARNING
LAMP SYSTEM .................................................
19
System Diagram ......................................................19
System Description ..................................................19
Component Parts Location ......................................20
Component Description ..........................................20
PARKING, LICENSE PLATE AND TAIL
LAMPS SYSTEM ..............................................
21
System Diagram .................................................. ....21
System Description ..................................................21
Component Parts Location ......................................22
Component Description ..........................................22
REAR FOG LAMP SYSTEM .............................23
System Diagram ......................................................23
System Description ..................................................23
Component Parts Location ......................................24
Component Description ..........................................24
EXTERIOR LAMP BATTERY SAVER SYS-
TEM ...................................................................
25
System Diagram ......................................................25
System Description ..................................................25
Component Parts Location ......................................26
Component Description ..........................................26
DIAGNOSIS SYSTEM (BCM) ...........................27

EXL-3
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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
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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

AUTO LIGHT SYSTEM
EXL-13
< FUNCTION DIAGNOSIS >[XENON TYPE]
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AUTO LIGHT SYSTEM
System DiagramINFOID:0000000003773527
System DescriptionINFOID:0000000003773528
OUTLINE
 Auto light system is controlled by each function of BCM and IPDM E/R.
Control by BCM- Combination switch reading function
- Headlamp control function
- Auto light function
- Delay timer function
Control by IPDM E/R- Relay control function
 Auto light system has the auto light function and the delay timer function.
- Auto light function turns the exterior lamps* and each illumination ON/OFF automatically according to the
outside brightness.
- When auto light system turns the exterior lamps ON with the ignition switch OFF, delay timer function turns
the exterior lamps OFF depending on the vehicle condition with the auto light function after a certain period
of time.
*: Headlamp (LO/HI), parking lamp, tail lamp and front fog lamp (Headlamp HI and front fog lamp depend on
the combination switch condition.)
AUTO LIGHT FUNCTION
 BCM detects the combination switch condition with the combination switch reading function.
 BCM supplies voltage to optical sensor when the ignition switch is turned ON or ACC.
 Optical sensor converts outside brightness (lux) to voltage and transmits the optical sensor signal to BCM.
 BCM judges outside brightness from the optical sensor signal and judges ON/OFF condition of the exterior
lamp and each illumination according to the outside brightness.
 BCM transmits each request signal to IPDM E/R with CAN communication according to ON/OFF condition
by the auto light function.
NOTE:
ON/OFF timing differs based on the sensitivity from the setting. The setting can be set by CONSULT-III. Refer
to EXL-28, "
HEADLAMP : CONSULT-III Function (BCM - HEAD LAMP)".
DELAY TIMER FUNCTION
BCM turns the exterior lamp OFF depending on the vehicle condition with the auto light function when the igni-
tion switch is turned OFF.
 Turns the exterior lamp OFF 5 minutes after detecting that any door opens (Door switch ON).
 Turns the exterior lamp OFF a certain period of time* after closing all doors (Door switch ON→OFF).
JPLIA0804GB

FRONT FOG LAMP SYSTEM
EXL-17
< FUNCTION DIAGNOSIS >[XENON TYPE]
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FRONT FOG LAMP SYSTEM
System DiagramINFOID:0000000003773531
System DescriptionINFOID:0000000003773532
OUTLINE
Front fog lamp is controlled by combination switch reading function and front fog lamp control function of BCM,
and relay control function of IPDM E/R.
FRONT FOG LAMP OPERATION
 BCM detects the combination switch condition by the combination switch reading function.
 BCM transmits the front fog light request signal to IPDM E/R with CAN communication according to the front
fog lamp ON condition.
Front fog lamp ON condition
- Front fog lamp switch ON
- Lighting switch 1ST, 2ND or AUTO (auto light function ON judgment)
 IPDM E/R turns the integrated front fog lamp relay ON, and turns the front fog lamp ON according to the
front fog light request signal.
 Combination meter turns the front fog lamp indicator lamp ON according to the front fog light request signal.
JPLIA1083GB

EXL-18
< FUNCTION DIAGNOSIS >[XENON TYPE]
FRONT FOG LAMP SYSTEM
Component Parts Location
INFOID:0000000003773533
Component DescriptionINFOID:0000000003773534
1. Front fog lamp 2. Combination switch 3. IPDM E/R
4. BCM 5. Front fog lamp indicator lamp
A. Engine room (LH) B. Behind the combination meter C. On the combination meter
JPLIA1121ZZ
Part Description
BCM Detects each switch condition by the combination switch reading function.
 Judges the front fog lamp ON/OFF status according to the vehicle condition.
- Requests the front fog lamp relay ON to IPDM E/R (with CAN communication).
IPDM E/RControls the integrated relay and supplies voltage to the load according to the request
from BCM (with CAN communication).
Combination switch
(Lighting & turn signal switch)Refer to BCS-8, "
System Diagram".
Combination meter
(Front fog lamp indicator lamp)Turn the front fog lamp indicator lamp ON according to the request from BCM (with
CAN communication).