fog light INFINITI QX56 2007 Factory Owner's Manual

AUTO LIGHT SYSTEM
LT-41
< SERVICE INFORMATION >
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ACTIVE TEST
Display Item List
SELF-DIAGNOSTIC RESULTS
Display Item List
CONSULT-II Function (IPDM E/R)INFOID:0000000003533379
Refer to PG-18, "CONSULT-II Function (IPDM E/R)" .
CONSULT-II START PROCEDURE
Refer to GI-36, "CONSULT-II Start Procedure" .
DATA MONITOR
All Items, Main Items, Select Item Menu
AUTO LIGHT SW "ON/OFF"Displays status of the lighting switch as judged from the lighting switch signal. (AUTO position:
ON/Other than AUTO position: OFF)
PASSING SW "ON/OFF"Displays status (flash-to-pass switch: ON/Others: OFF) of flash-to-pass switch judged from
lighting switch signal.
FR FOG SW "ON/OFF"Displays status (front fog lamp switch: ON/Others: OFF) of front fog lamp switch judged from
lighting switch signal.
DOOR SW-DR "ON/OFF"Displays status of the front door LH as judged from the front door switch LH signal. (Door is
open: ON/Door is closed: OFF)
DOOR SW-AS "ON/OFF"Displays status of the front door RH as judged from the front door switch RH signal. (Door is
open: ON/Door is closed: OFF)
DOOR SW-RR "ON/OFF"Displays status of the rear door as judged from the rear door switch (RH) signal. (Door is open:
ON/Door is closed: OFF)
DOOR SW-RL "ON/OFF"Displays status of the rear door as judged from the rear door switch (LH) signal. (Door is open:
ON/Door is closed: OFF)
BACK DOOR SW "ON/OFF"Displays status of the back door as judged from the back door latch (door ajar switch) signal.
(Door is open: ON/Door is closed: OFF)
TURN SIGNAL R "ON/OFF" Displays status (Turn right: ON/Others: OFF) as judged from lighting switch signal.
TURN SIGNAL L "ON/OFF" Displays status (Turn left: ON/Others: OFF) as judged from lighting switch signal.
CARGO LAMP SW "ON/OFF" Displays status of cargo lamp.
OPTICAL SENSOR [0 - 5V] Displays "ambient light (close to 5V when dark/close to 0V when light)" judged from optical sen-
sor signal. Monitor item Contents
Te s t i t e m D e s c r i p t i o n
TAIL LAMP Allows tail lamp relay to operate by switching ON-OFF.
HEAD LAMP Allows headlamp relay (HI, LO) to operate by switching ON-OFF.
FR FOG LAMP Allows fog lamp relay to operate by switching ON-OFF.
CARGO LAMP Allows cargo lamp to operate by switching ON-OFF.
Monitored item CONSULT-ll display Description
CAN communication CAN communication [U1000] Malfunction is detected in CAN communication.
CAN communication system CAN communication system 1 to 6 [U1000] Malfunction is detected in CAN system.

LT-42
< SERVICE INFORMATION >
AUTO LIGHT SYSTEM
NOTE:
Perform monitoring of IPDM E/R data with the ignition switch ON. When the ignition switch is at ACC, the dis-
play may not be correct.
ACTIVE TEST
Trouble Diagnosis Chart by SymptomINFOID:0000000003533380
Lighting Switch InspectionINFOID:0000000003533381
1.CHECK LIGHTING SWITCH INPUT SIGNAL
With CONSULT-II
Item nameCONSULT-II
screen displayDisplay or
unitMonitor item selection
Description
ALL
SIGNALSMAIN
SIGNALSSELECTION
FROM MENU
Parking, license plate
and tail lamps requestTAIL&CLR REQ ON/OFF×× ×Signal status input from BCM
Headlamp low beam re-
questHL LO REQ ON/OFF×× ×Signal status input from BCM
Headlamp high beam re-
questHL HI REQ ON/OFF×× ×Signal status input from BCM
Front fog lamps request FR FOG REQ ON/OFF×× ×Signal status input from BCM
Test item CONSULT-II screen display Description
Tail lamp relay output TAIL LAMPAllows tail lamp relay to operate by switching operation ON-OFF at your
option.
Headlamp relay (HI, LO) out-
put
LAMPSAllows headlamp relay (HI, LO) to operate by switching operation (OFF,
HI, LO) at your option (Headlamp high beam repeats ON-OFF every 1
second).
Front fog lamp relay outputAllows fog lamp relay to operate by switching operation ON-OFF at your
option.
Trouble phenomenon Malfunction system and reference
• Parking lamps and headlamps will not illuminate when out-
side of the vehicle becomes dark. (Lighting switch 1st posi-
tion and 2nd position operate normally.)
• Parking lamps and headlamp will not go out when outside of
the vehicle becomes light. (Lighting switch 1st position and
2nd position operate normally.)
• Headlamps go out when outside of the vehicle becomes
light, but parking lamps stay on.•Refer to LT- 4 0 , "
CONSULT-II Function (BCM)" .
•Refer to LT- 7 3 , "
Combination Switch Inspection" .
•Refer to LT- 4 3 , "
Optical Sensor System Inspection" .
If above systems are normal, replace BCM. Refer to BCS-24, "
BCM" .
Parking lamps illuminate when outside of the vehicle becomes
dark, but headlamps stay off. (Lighting switch 1st position and
2nd position operate normally.)•Refer to LT- 4 0 , "
CONSULT-II Function (BCM)" .
•Refer to LT- 4 3 , "
Optical Sensor System Inspection" .
If above systems are normal, replace BCM. Refer to BCS-24, "
BCM" .
Auto light adjustment system will not operate. (Lighting switch
AUTO, 1st position and 2nd position operate normally.)•Refer to LT- 4 3 , "
Optical Sensor System Inspection" .
If above system is normal, replace BCM. Refer to BCS-24, "
BCM" .
Auto light adjustment system will not operate.• CAN communication line to BCM inspection. Refer to BCS-18,
"CAN Communication Inspection Using CONSULT-II (Self-Diagno-
sis)" .
Shut off delay feature will not operate.• CAN communication line inspection between BCM and combination
meter. Refer to BCS-18, "
CAN Communication Inspection Using
CONSULT-II (Self-Diagnosis)" .
•Refer toBL-25, "
Door Switch Check" .
If above system is normal, replace BCM. Refer to BCS-24, "
BCM" .

FRONT FOG LAMP
LT-49
< SERVICE INFORMATION >
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FRONT FOG LAMP
Component Parts and Harness Connector LocationINFOID:0000000003533388
System DescriptionINFOID:0000000003533389
Control of the fog lamps is dependent upon the position of the combination switch (lighting switch). The light-
ing switch must be in the 2ND position or AUTO position (LOW beam is ON) for front fog lamp operation.
When the lighting switch is placed in the fog lamp position, the BCM (body control module) receives input sig-
nal requesting the fog lamps to illuminate. When the headlamps are illuminated, this input signal is communi-
cated to the IPDM E/R (intelligent power distribution module engine room) across the CAN communication
lines. The CPU (central processing unit) of the IPDM E/R controls the front fog lamp relay coil. When acti-
vated, this relay directs power to the front fog lamps.
OUTLINE
Power is supplied at all times
• to ignition relay, located in the IPDM E/R,
• to front fog lamp relay, located in the IPDM E/R,
• through 20A fuse (No. 53, located in the IPDM E/R)
• to CPU of the IPDM E/R, and
• through 50A fusible link (letter f , located in the fuse and fusible link box)
• to BCM terminal 70.
When the ignition switch is in ON or START position, power is supplied
• to ignition relay, located in the IPDM E/R, and
• through 10A fuse (No. 59, located in the fuse and relay box)
• to BCM terminal 38.
Ground is supplied
• to BCM terminal 67
• through grounds M57, M61 and M79, and
• to IPDM E/R terminals 38 and 59
• through grounds E9, E15 and E24.
FOG LAMP OPERATION
The fog lamp switch is built into the combination switch. The lighting switch must be in the 2ND position or
AUTO position (LOW beam is ON) and the fog lamp switch must be ON for fog lamp operation.
WKIA3466E

LT-50
< SERVICE INFORMATION >
FRONT FOG LAMP
With the fog lamp switch in the ON position, the CPU of the IPDM E/R grounds the coil side of the fog lamp
relay. The fog lamp relay then directs power
• through 20A fuse (No. 56, located in the IPDM E/R)
• through IPDM E/R terminal 50
• to front turn/fog lamp LH terminal 1, and
• through IPDM E/R terminal 51
• to front turn/fog lamp RH terminal 1.
Ground is supplied
• to front turn/fog lamp LH and RH terminal 3
• through grounds E9, E15 and E24.
With power and ground supplied, the front fog lamps illuminate.
COMBINATION SWITCH READING FUNCTION
Refer to BCS-3, "System Description" .
EXTERIOR LAMP BATTERY SAVER CONTROL
When the combination switch (lighting switch) is in the 2ND position (ON), the fog lamp switch is ON, and the
ignition switch is turned from ON or ACC to OFF, the battery saver control feature is activated.
Under this condition, the fog lamps (and headlamps) remain illuminated for 5 minutes, then the fog lamps (and
headlamps) are turned off.
Exterior lamp battery saver control mode can be changed by the function setting of CONSULT-II.
CAN Communication System DescriptionINFOID:0000000003533390
Refer to LAN-4, "CAN Communication System" .

FRONT FOG LAMP
LT-53
< SERVICE INFORMATION >
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How to Proceed with Trouble DiagnosisINFOID:0000000003533394
1. Confirm the symptom or customer complaint.
2. Understand operation description and function description. Refer to LT-49, "
System Description" .
3. Perform the Preliminary Check. Refer toLT-53, "
Preliminary Check" .
4. Check symptom and repair or replace the component.
5. Does the front fog lamp operate normally? If YES: GO TO 6. If NO: GO TO 4.
6. Inspection End.
Preliminary CheckINFOID:0000000003533395
CHECK POWER SUPPLY AND GROUND CIRCUIT FOR BCM
Refer to BCS-15, "BCM Power Supply and Ground Circuit Inspection" .
CHECK POWER SUPPLY AND GROUND CIRCUIT FOR IPDM E/R
Refer to PG-26, "IPDM E/R Power/Ground Circuit Inspection" .
CONSULT-II Function for BCMINFOID:0000000003533396
Refer to BCS-16, "CONSULT-II Function (BCM)" .
CONSULT-II Function for IPDM E/RINFOID:0000000003533397
Refer to PG-18, "CONSULT-II Function (IPDM E/R)" .
Front Fog Lamps Do Not Illuminate (Both Sides)INFOID:0000000003533398
1.CHECK FUSE
Inspect 20A fuse (No. 56, located in the IPDM E/R).
OK or NG
OK >> GO TO 2.
NG >> Repair harness.
2.CHECK COMBINATION SWITCH INPUT SIGNAL
Select "BCM" on CONSULT-II. With "HEAD LAMP" data monitor,
make sure "FR FOG SW" turns ON-OFF linked with operation of
lighting switch.
OK or NG
OK >> GO TO 3.
NG >> Check lighting switch. Refer to LT-73, "
Combination
Switch Inspection".
3.FOG LAMP ACTIVE TEST
1. Select "IPDM E/R" on CONSULT-II, and select "ACTIVE TEST"
on "SELECT DIAG MODE" screen.
2. Select "EXTERNAL LAMPS" on "SELECT TEST ITEM" screen.
3. Touch "FOG" on "ACTIVE TEST" screen.
4. Make sure fog lamps operate.
OK or NG
OK >> GO TO 4.
NG >> GO TO 5.When lighting switch is in
FOG position: FR FOG SW ON
SKIA5897E
Fog lamps should operate.
WKIA1438E

LT-54
< SERVICE INFORMATION >
FRONT FOG LAMP
4.CHECK IPDM E/R
1. Select "IPDM E/R" on CONSULT-II, and select "DATA MONI-
TOR" on "SELECT DIAG MODE" screen.
2. Make sure "FR FOG REQ" turns ON when lighting switch is in
FOG position.
OK or NG
OK >> Replace IPDM E/R. Refer to PG-28, "Removal and
Installation of IPDM E/R".
NG >> Replace BCM. Refer to BCS-24, "
BCM".
5.IPDM E/R INSPECTION
1. Disconnect front turn/fog lamp connectors
2. Start auto active test. Refer to PG-20, "
Auto Active Test". When
front fog lamp relay is operating, check voltage between left/right
front turn/fog lamp connector terminal and ground.
OK or NG
OK >> Check front fog lamp bulbs and replace as necessary.
NG >> Replace IPDM E/R. Refer to PG-28, "
Removal and Installation of IPDM E/R".
Front Fog Lamp Does Not Illuminate (One Side)INFOID:0000000003533399
1.BULB INSPECTION
Inspect bulbs of lamps which do not illuminate.
OK or NG
OK >> GO TO 2.
NG >> Replace lamp bulb. Refer to LT-55, "
Bulb Replacement".
2.INSPECTION BETWEEN IPDM E/R AND FRONT FOG LAMPS
1. Disconnect IPDM E/R connector and inoperative front fog lamp connector.
2. Check continuity between harness connector terminals of IPDM
E/R and harness connector terminal of front turn/fog lamps.
OK or NG
OK >> Check ground circuit. If OK, replace IPDM E/R. Refer to
PG-28, "
Removal and Installation of IPDM E/R". If NG,
repair harness or connector.
NG >> Check for short circuits and open circuits in harness between IPDM E/R and front turn/fog lamps. When lighting switch is in
FOG position: FR FOG REQ ON
SKIA5898E
Front turn/fog lamp (+)
(–)Vo l ta g e
(Approx.) Connec-
torTe r m i n a l
LH E101 1
Ground Battery voltage
RH E102 1
WKIA1884E
IPDM E/R Front turn/fog lamp Continuity
Connector Terminal Connector Terminal
E12350 LH E101 1
Ye s
51 RH E102 1
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COMBINATION SWITCH
LT-73
< SERVICE INFORMATION >
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CONSULT-II Function (BCM)INFOID:0000000003533423
Refer to BCS-16, "CONSULT-II Function (BCM)" .
CONSULT-II START PROCEDURE
Refer to GI-36, "CONSULT-II Start Procedure" .
DATA MONITOR
Display Item List
Combination Switch InspectionINFOID:0000000003533424
1.SYSTEM CHECK
1. Referring to table below, check which system the malfunctioning switch belongs.
>> GO TO 2.
2.SYSTEM CHECK
With CONSULT-II
CAUTION:
Monitor item name
"OPERATION OR UNIT"Contents
TURN SIGNAL R "ON/OFF" Displays "Turn Right (ON)/Other (OFF)" status, determined from lighting switch signal.
TURN SIGNAL L "ON/OFF" Displays "Turn Left (ON)/Other (OFF)" status, determined from lighting switch signal.
HI BEAM SW "ON/OFF"Displays status (high beam switch: ON/Others: OFF) of high beam switch judged from lighting switch
signal.
HEAD LAMP SW 1 "ON/OFF" Displays "Headlamp switch 1 (ON)/Other (OFF)" status, determined from lighting switch signal.
HEAD LAMP SW 2 "ON/OFF"Displays status (headlamp switch 2: ON/Others: OFF) of headlamp switch 2 judged from lighting
switch signal.
LIGHT SW 1ST "ON/OFF"Displays status (lighting switch 1st position: ON/Others: OFF) of lighting switch judged from lighting
switch signal.
PASSING SW "ON/OFF"Displays status (flash-to-pass switch: ON/Others: OFF) of flash-to-pass switch judged from lighting
switch signal.
AUTO LIGHT SW "ON/OFF" Displays "Auto light switch (ON)/Other (OFF)" status, determined from lighting switch signal.
FR FOG SW "ON/OFF" Displays "Front fog lamp switch (ON)/Other (OFF)" status, determined from lighting switch signal.
FR WIPER HI "ON/OFF" Displays "Front Wiper HI (ON)/Other (OFF)" status, determined from wiper switch signal.
FR WIPER LOW "ON/OFF" Displays "Front Wiper LOW (ON)/Other (OFF)" status, determined from wiper switch signal.
FR WIPER INT "ON/OFF" Displays "Front Wiper INT (ON)/Other (OFF)" status, determined from wiper switch signal.
FR WASHER SW "ON/OFF" Displays "Front Washer Switch (ON)/Other (OFF)" status, determined from wiper switch signal.
INT VOLUME [1 - 7] Displays intermittent operation knob setting (1 - 7), determined from wiper switch signal.
RR WIPER ON "ON/OFF" Displays "Rear Wiper (ON)/(OFF)" status, determined from wiper switch signal.
RR WIPER INT "ON/OFF" Displays "Rear Wiper INT (ON)/(OFF)" status, determined from wiper switch signal.
RR WASHER SW "ON/OFF" Displays "Rear Washer (ON)/(OFF)" status, determined from wiper switch signal.
System 1 System 2 System 3 System 4 System 5
— FR WASHER FR WIPER LO TURN LH TURN RH
FR WIPER HI — FR WIPER INT PASSING HEAD LAMP1
INT VOLUME 1 RR WASHER — HEAD LAMP2 HI BEAM
RR WIPER INT INT VOLUME 3 AUTO LIGHT — TAIL LAMP
INT VOLUME 2 RR WIPER ON — FR FOG —

PG-22
< SERVICE INFORMATION >
IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)
Terminal and Reference Value for IPDM E/R
INFOID:0000000003533840
Symptom Inspection contents Possible cause
Rear window defogger
does not operate.Perform auto active
test. Does rear win-
dow defogger oper-
ate?YES • BCM signal input circuit
NO• Rear window defogger relay
• Open circuit of rear window defogger
•IPDM E/R malfunction
• Harness or connector malfunction between IPDM E/R and rear window
defogger
Any of front wipers, tail
and parking lamps, front
fog lamps, and head-
lamps (Hi, Lo) do not op-
erate.Perform auto active
test. Does system in
question operate?YES • BCM signal input system
NO• Lamp/wiper motor malfunction
• Lamp/wiper motor ground circuit malfunction
• Harness/connector malfunction between IPDM E/R and system in ques-
tion
• IPDM E/R (integrated relay) malfunction
A/C compressor does
not operate.Perform auto active
test. Does magnet
clutch operate?YES• BCM signal input circuit
• CAN communication signal between BCM and ECM
• CAN communication signal between ECM and IPDM E/R
NO• Magnet clutch malfunction
• Harness/connector malfunction between IPDM E/R and magnet clutch
• IPDM E/R (integrated relay) malfunction
Cooling fan does not op-
erate.Perform auto active
test. Does cooling fan
operate?YES• ECM signal input circuit
• CAN communication signal between ECM and IPDM E/R
NO• Cooling fan motor malfunction
• Harness/connector malfunction between IPDM E/R and cooling fan mo-
tor
• IPDM E/R (integrated relay) malfunction
Te r m i n a lWire
colorSignal nameSignal
input/
outputMeasuring condition
Reference value
(Approx.) Igni-
tion
switchOperation or condition
1 B/Y Battery power supply Input OFF — Battery voltage
2 R Battery power supply Input OFF — Battery voltage
3 BR ECM relay Output —Ignition switch ON or START Battery voltage
Ignition switch OFF or ACC 0V
4 W/L ECM relay Output —Ignition switch ON or START Battery voltage
Ignition switch OFF or ACC 0V
6LThrottle control motor
relayOutput —Ignition switch ON or START Battery voltage
Ignition switch OFF or ACC 0V
7 W/B ECM relay control Input —Ignition switch ON or START 0V
Ignition switch OFF or ACC Battery voltage
8 R/B Fuse 54 Output —Ignition switch ON or START Battery voltage
Ignition switch OFF or ACC 0V
10 GDaytime light relay
controlOutput ONDaytime light system active 0V
Daytime light system inactive Battery voltage
11 Y/B A/C compressor OutputON or
STARTA/C switch ON or defrost A/C
switchBattery voltage
A/C switch OFF or defrost A/C
switch0V

IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)
PG-23
< SERVICE INFORMATION >
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12 L/WIgnition switch sup-
plied powerInput —OFF or ACC 0V
ON or START Battery voltage
13 B/Y Fuel pump relay Output —Ignition switch ON or START Battery voltage
Ignition switch OFF or ACC 0V
14 Y/R Fuse 49 Output —Ignition switch ON or START Battery voltage
Ignition switch OFF or ACC 0V
15 LG/B Fuse 50 Output —Ignition switch ON or START Battery voltage
Ignition switch OFF or ACC 0V
16 G Fuse 51 Output —Ignition switch ON or START Battery voltage
Ignition switch OFF or ACC 0V
17 W Fuse 55 Output —Ignition switch ON or START Battery voltage
Ignition switch OFF or ACC 0V
19 W/R Starter motor Output START — Battery voltage
21 BRIgnition switch sup-
plied powerInput —OFF or ACC 0V
START Battery voltage
22 G Battery power supply Output OFF — Battery voltage
23 GR/WDoor mirror defogger
output signalOutput —When rear defogger switch is
ONBattery voltage
When rear defogger switch is
OFF0V
24 L/B Cooling fan relay Output —Conditions correct for cooling
fan operationBattery voltage
Conditions not correct for
cooling fan operation0V
26 P/LHeadlamp aiming mo-
torsOutput —Lighting
switch 2nd
position, or
AUTO, head-
lamp aiming
switch in po-
sitionOFF Battery voltage
ON 0V
27 W/B Fuse 38 Output —Ignition switch ON or START Battery voltage
Ignition switch OFF or ACC 0V
30 W Fuse 53 Output —Ignition switch ON or START Battery voltage
Ignition switch OFF or ACC 0V
32 LWiper low speed sig-
nalOutputON or
STARTWiper switchOFF Battery voltage
LO or INT 0V
35 L/BWiper high speed sig-
nalOutputON or
STARTWiper switchOFF, LO, INT Battery voltage
HI 0V
38 B Ground Input — — 0V
39 L CAN-L — ON — —
40 P CAN-H — ON — —
41 Y/B Hood switch Input —Hood closed OFF 0V
Hood open ON Battery voltage Te r m i n a lWire
colorSignal nameSignal
input/
outputMeasuring condition
Reference value
(Approx.) Igni-
tion
switchOperation or condition

PG-24
< SERVICE INFORMATION >
IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)
43 L/Y Wiper auto stop signal InputON or
STARTWiper switch OFF, LO, INT Battery voltage
44 BRDaytime light relay
controlInput ONDaytime light system active 0V
Daytime light system inactive Battery voltage
45 G/W Horn relay control Input ONWhen door locks are operated
using key fob (OFF → ON)*1Battery voltage → 0V
46 GRFuel pump relay con-
trolInput —Ignition switch ON or START 0V
Ignition switch OFF or ACC Battery voltage
47 OThrottle control motor
relay controlInput —Ignition switch ON or START 0V
Ignition switch OFF or ACC Battery voltage
48 B/RStarter relay (inhibit
switch)InputON or
STARTSelector lever in "P" or "N" 0V
Selector lever any other posi-
tionBattery voltage
49 R/L Trailer tow relay Output ONLighting
switch must
be in the 1st
positionOFF 0V
ON Battery voltage
50 W/R Front fog lamp (LH) OutputON or
STARTLighting
switch must
be in the 2nd
position
(LOW beam
is ON) and
the front fog
lamp switchOFF 0V
ON Battery voltage
51 W/R Front fog lamp (RH) OutputON or
STARTLighting
switch must
be in the 2nd
position
(LOW beam
is ON) and
the front fog
lamp switchOFF 0V
ON Battery voltage
52 LLH low beam head-
lampOutput — Lighting switch in 2nd position Battery voltage
54 R/YRH low beam head-
lampOutput — Lighting switch in 2nd position Battery voltage
55 GLH high beam head-
lampOutput —Lighting switch in 2nd position
and placed in HIGH or PASS
positionBattery voltage
56L/W*2
Y*3LH high beam head-
lampOutput —Lighting switch in 2nd position
and placed in HIGH or PASS
positionBattery voltage
57 R/LParking, license, and
tail lampOutput ONLighting
switch 1st po-
sitionOFF 0V
ON Battery voltage
59 B Ground Input — — 0V
60 B/WRear window defog-
ger relayOutputON or
STARTRear defogger switch ON Battery voltage
Rear defogger switch OFF 0V Te r m i n a lWire
colorSignal nameSignal
input/
outputMeasuring condition
Reference value
(Approx.) Igni-
tion
switchOperation or condition