Infiniti M45 (Y34). Manual — part 644
FRONT FOG LAMP
LT-83
C
D
E
F
G
H
I
J
L
M
A
B
LT
TKWA0544E
LT-84
FRONT FOG LAMP
Terminals and Reference Value for Headlamp Battery Saver Control Unit
AKS004SY
Terminals and Reference Value for BCM
AKS004SZ
Terminal
No.
Wire
color
Item
Operation or condition
Reference value
1
W/B
Ignition switch ON or
START
Ignition switch
OFF or ACC
Approx. 0V
ON or START
Battery voltage
2
W/PU
Headlamp relay out 1
Ignition switch
(with lighting switch
except OFF or 1ST)
OFF
or
ACC
More than 45 seconds after igni-
tion switch is turned OFF or ACC
Battery voltage
Within 45 seconds after ignition
switch is turned OFF or ACC
Approx. 0V
ON or START
Approx. 0V
Headlamps illuminate by auto light control.
Approx. 0V
3
R/B
Headlamp switch 1
Lighting switch
1ST
Approx. 2.4V
PASS or 2ND
Approx. 0V
Headlamps illuminate by auto light control.
Approx. 0V
4
B
Ground
—
Approx. 0V
7
Y/G
Battery power supply
—
Battery voltage
8
W/PU
Headlamp relay out 2
Ignition switch
(with lighting switch
except OFF or 1ST)
OFF
or
ACC
More than 45 seconds after igni-
tion switch is turned OFF or ACC
Battery voltage
With 45 seconds after ignition
switch is turned OFF or ACC
Approx. 0V
ON or START
Approx. 0V
Headlamps illuminate by auto light control.
Approx. 0V
9
R/B
Headlamp switch 2
Lighting switch
1ST
Approx. 2.4V
PASS or 2ND
Approx. 0V
Headlamps illuminate by auto light control.
Approx. 0V
10
Y/R
RAP input signal
Ignition switch
OFF or ACC (After more than 45 seconds
with ignition switch turned OFF or ACC)
Battery voltage
ON or START
Approx. 0V
11
B
Ground
—
Approx. 0V
Terminal
No.
Wire
color
Item
Measuring condition
Reference value
Ignition
switch
Operation or condition
5
W/PU
Headlamp relay control signal
ON
Lighting switch:
AUTO
Light is applied to optical
sensor.
Battery voltage
Light is not applied to opti-
cal sensor.
Approx. 0V
14
Y/L
Lighting switch AUTO signal
ON
Lighting switch
AUTO
Approx. 0V
OFF
8V or more
37
LG
Front door switch (Passenger
side) signal
OFF
Front door switch
(Passenger side)
ON (open)
Approx. 0V
OFF (close)
Battery voltage
135
Y/G
RAP output signal
OFF
When headlamp battery saver timer is operated
Approx. 0V
142
R/Y
Front door switch (Driver side)
signal
OFF
Front door switch
(Driver side) signal
ON (open)
Approx. 0V
OFF (close)
Battery voltage
FRONT FOG LAMP
LT-85
C
D
E
F
G
H
I
J
L
M
A
B
LT
Front Fog Lamps Do Not Illuminate (Both Sides)
AKS003RT
1.
CHECK FRONT FOG LAMP POWER SUPPLY CIRCUIT
1.
Turn ignition switch OFF.
2.
Remove front fog lamp relay.
3.
Check voltage between front fog lamp relay harness connector
E217 terminal 3 (OR) and ground.
OK or NG
OK
>> GO TO 2.
NG
>> Check the following.
●
15A fuse (No.76 located in fuse, fusible link and relay
block)
●
Harness for open or short between front fog lamp relay and fuse
2.
CHECK FRONT FOG LAMP RELAY
Apply 12V between front fog lamp relay terminals 1 and 2, and check
continuity between terminals 3 and 5.
OK or NG
OK
>> GO TO 3.
NG
>> Replace front fog lamp relay.
3.
CHECK FRONT FOG LAMP RELAY POWER SUPPLY CIRCUIT
1.
Turn ignition switch ON.
2.
Check voltage between front fog lamp relay harness connector
E217 terminal 1 (L) and ground.
OK or NG
OK
>> GO TO 4.
NG
>> Check harness for open or short between front fog lamp
relay and headlamp relay-1.
3 (OR) - Ground
: Battery voltage should exist.
PKIA5914E
3 - 5
: Continuity should exist.
PKIA5915E
1 (L) - Ground
: Lighting switch
2ND
: Battery voltage
should exist.
PKIA5916E
LT-86
FRONT FOG LAMP
4.
CHECK FRONT FOG LAMP SWITCH CIRCUIT
1.
Turn ignition switch OFF.
2.
Check continuity between front fog lamp relay harness connec-
tor E217 terminal 2 (SB) and ground while operating front fog
lamp switch with lighting switch “LOW” position.
OK or NG
OK
>> Check harness for open or short between front fog lamp
relay and front fog lamps.
NG
>> GO TO 5.
5.
CHECK FRONT FOG LAMP SWITCH
1.
Disconnect front fog lamp switch.
2.
Check continuity between front fog lamp switch terminals 31 and
32 while operating front fog lamp switch.
OK or NG
OK
>> GO TO 6.
NG
>> Replace the front fog lamp switch.
6.
CHECK LIGHTING SWITCH CIRCUIT
1.
Disconnect lighting switch.
2.
Check continuity between front fog lamp switch harness connec-
tor M63 terminal 32 (R/W) and lighting switch harness connector
M55 terminal 10 (R/W).
3.
Check continuity between front fog lamp switch harness connec-
tor M63 terminal 32 (R/W) and ground.
OK or NG
OK
>> Check lighting switch. Refer to
LT-102, "Switch Circuit Inspection"
NG
>> Repair harness or connector.
Front Fog Lamp Does Not Illuminate (One Side)
AKS003RU
1.
BULB INSPECTION
1.
Replace bulb with other side bulb or new one.
2.
Check if front fog lamp illuminates correctly.
OK or NG
OK
>> Replace front fog lamp bulb.
NG
>> GO TO 2.
Terminals
Fog lamp
switch condition
Continuity
Connector
Terminal (Wire color)
B217
2 (SB)
Ground
ON
Yes
OFF
No
PKIA5917E
Terminals
Fog lamp switch condition
Continuity
31
32
ON
Yes
OFF
No
PKIA7886E
32 (R/W) - 10 (R/W)
: Continuity should exist.
32 (R/W) - Ground
: Continuity should not exist.
PKIA5919E
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