Infiniti F50. Manual — part 646
HEADLAMP (FOR CANADA) - DAYTIME LIGHT SYSTEM -
LT-51
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Terminals and Reference Value for Daytime Light Control Unit
EKS001BH
Terminal
No.
Wire
color
Item
Condition
Reference value
(Approximate values)
1
W/R
Alternator
When turning ignition switch to “ON”
Less than 1V
When engine is running
Battery voltage
When turning ignition switch to “OFF”
Less than 1V
2
SB
Start signal
When turning ignition switch to “START”
Battery voltage
When turning ignition switch to “ON” from “START”
Less than 1V
When turning ignition switch to “ACC” or “OFF”
Less than 1V
3
W/G
Power source
When turning ignition switch to “ON”
Battery voltage
When turning ignition switch to “START”
Battery voltage
When turning ignition switch to “ACC” or “OFF”
Less than 1V
4
R
RH light fuse
When lighting switch is turned to the 2ND position with “HI
BEAM” or “FLASH TO PASS” position
Battery voltage
When lighting switch is turned to “FLASH TO PASS” posi-
tion with ignition switch “ON” position
Battery voltage
5
W/G
LH light fuse
When lighting switch is turned to the 2ND position with “HI
BEAM” or “FLASH TO PASS” position
Battery voltage
When lighting switch is turned to “FLASH TO PASS” posi-
tion with ignition switch “ON” position
Battery voltage
6
R/W
LH hi beam
When lighting switch is turned to the 2ND position with “HI
BEAM” or “FLASH TO PASS” position
Battery voltage
When releasing parking brake with engine running and turn-
ing lighting switch to “OFF” (daytime light operation)
CAUTION:
Block wheels and ensure selector lever is in N or P
position.
Half battery voltage
7
R/W
RH hi beam
When lighting switch is turned to the 2ND position with “HI
BEAM” or “FLASH TO PASS” position
Battery voltage
When releasing parking brake with engine running and turn-
ing lighting switch to “OFF” (daytime light operation)
CAUTION:
Block wheels and ensure selector lever is in N or P
position.
Battery voltage
9
P
RH hi beam
(ground)
When turning lighting switch to the 2ND position with “HI
BEAM“ or “FLASH TO PASS” position
Less than 1V
When releasing parking brake with engine running and turn-
ing lighting switch to “OFF” (daytime light operation)
CAUTION:
Block wheels and ensure selector lever is in N or P
position.
Half battery voltage
10
L/Y
LH hi beam
(ground)
When turning lighting switch to the 2ND position with “HI
BEAM” or “FLASH TO PASS” position
Less than 1V
When releasing parking brake with engine running and turn-
ing lighting switch to “OFF” (daytime light operation)
CAUTION:
Block wheels and ensure selector lever is in N or P
position.
Less than 1V
13
L/R
LH lighting switch (Hi
beam)
When turning lighting switch to the 2ND position with “HI
BEAM” or “FLASH TO PASS” position
Less than 1V
14
P
RH lighting switch (Hi
beam)
When turning lighting switch to the 2ND position with “HI
BEAM” or “FLASH TO PASS” position
Less than 1V
16
B
Ground
—
0V
LT-52
HEADLAMP (FOR CANADA) - DAYTIME LIGHT SYSTEM -
Symptom Chart
EKS000SO
17
Y
Parking brake switch
When parking brake is released
Battery voltage
When parking brake is pulled
Less than 1.7V
Terminal
No.
Wire
color
Item
Condition
Reference value
(Approximate values)
Symptom
Repair Procedure
Neither headlamp operates.
1. Check 10A fuse [No. 6, located in fuse block (J/B) No. 1].
Verify battery positive voltage is present at terminal 7 of head-
lamp battery saver control unit.
2. Check lighting switch. Refer to
LT-67, "Switch Circuit Inspec-
.
3. Check headlamp battery saver control unit. Refer to
"Terminals and Reference Value for Battery Saver Control Unit"
.
Headlamp (low beam) does not operate, but headlamp (high
beam) does operate.
1. Check 20A fuse [No. 57, located in fuse, fusible link and relay
block (J/B)]. Verify battery positive voltage is present at termi-
nals 3 of headlamp relay-1.
2. Check headlamp relay-1.
3. Check harness between headlamp relay-1 and headlamp bat-
tery saver control unit.
4. Check headlamp battery saver control unit. Refer to
"Terminals and Reference Value for Battery Saver Control Unit"
.
Headlamp (high beam) does not operate, but headlamp (low
beam) does operate.
1. Check 15A fuse (No. 73, located in fuse, fusible link and relay
box). Verify battery positive voltage is present at terminals 2
and 5 of headlamp relay-2.
2. Check headlamp relay-2.
3. Check harness between headlamp relay-2 and headlamp bat-
tery saver control unit.
4. Check headlamp battery saver control unit. Refer to
minals and Reference Value for Battery Saver Control Unit"
RH low beam does not operate, but LH low beam does operate.
1. Check 20A fuse [No. 55, located in fuse, fusible link and relay
block (J/B)]. Verify battery positive voltage is present at terminal
7 of headlamp relay-1.
2. Check headlamp relay-1.
3. Check harness between headlamp relay-1 terminal 6 and RH
headlamp for open circuit.
4. Check RH low beam ground circuit.
5. Replace the xenon bulb with other side bulb or new one. (If
headlamps illuminate correctly, replace the bulb.)
6. Replace the HID control unit with other side control unit or new
one. (If headlamps illuminate correctly, replace the HID control
unit.)
HEADLAMP (FOR CANADA) - DAYTIME LIGHT SYSTEM -
LT-53
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LH low beam does not operate, but RH low beam does operate.
1. Check 20A fuse [No. 57, located in fuse, fusible link and relay
block (J/B)]. Verify battery positive voltage is present at terminal
3 of headlamp relay-1.
2. Check headlamp relay-1.
3. Check harness between headlamp relay-1 terminal 5 and LH
headlamp for open circuit.
4. Check LH low beam ground circuit.
5. Replace the xenon bulb with other side bulb or new one. (If
headlamps illuminate correctly, replace the bulb.)
6. Replace the HID control unit with other side control unit or new
one. (If headlamps illuminate correctly, replace the HID control
unit.)
RH high beam does not operate, but LH high beam does operate.
1. Check bulb.
2. Check the following.
–
Check harness between headlamp relay-2 terminal 3 and day-
time light control unit terminal 4.
–
Check harness between daytime light control unit and head-
lamp RH.
3. Check lighting switch. Refer to
LT-67, "Switch Circuit Inspec-
.
4. Check harness between daytime light control unit and lighting
switch.
5. Check daytime light control unit. Refer to
Reference Value for Daytime Light Control Unit"
LH high beam does not operate, but RH high beam does operate.
1. Check bulb.
2. Check the following.
–
Check harness between headlamp relay-2 terminal 3 and day-
time light control unit terminal 5.
–
Check harness between daytime light control unit and head-
lamp LH.
3. Check lighting switch. Refer to
LT-67, "Switch Circuit Inspec-
.
4. Check harness between daytime light control unit and lighting
switch.
5. Check daytime light control unit. Refer to
Reference Value for Daytime Light Control Unit"
High beam indicator does not work.
1. Check bulb in combination meter.
2. Check harness between headlamp relay-2 terminal 3 and com-
bination meter for open circuit.
Symptom
Repair Procedure
LT-54
HEADLAMP (FOR CANADA) - DAYTIME LIGHT SYSTEM -
Aiming Adjustment
EKS000SQ
Refer to
in “HEADLAMP (FOR USA)”.
Bulb Replacement
EKS000SP
Refer to
in “HEADLAMP (FOR USA)”.
Removal and Installation
EKS000T5
Refer to
LT-34, "Removal and Installation"
in “HEADLAMP (FOR USA)”.
Disassembly and Assembly
EKS000UN
Refer to
LT-35, "Disassembly and Assembly"
Battery saver control does not operate properly.
1. Verify 12 positive voltage from BCM is present at terminal 10 of
headlamp battery saver control unit:
–
Within 45 seconds after ignition switch turned off.
–
Front door is opened or more than 45 seconds after ignition
switch is turned off.
2. Check the following.
–
Harness between BCM and LH or RH front door switch for open
or short circuit.
–
LH or RH front door switch ground circuit.
–
LH or RH front door switch.
3. Check the following.
–
Harness between headlamp battery saver control unit terminals
5 or 13 and lighting switch terminal 11 for open or short circuit.
–
Harness between lighting switch terminal 5 and ground.
–
LT-67, "Switch Circuit Inspection"
.
4. Check headlamp battery saver control unit.
5. Check BCM. Refer to
LT-18, "Terminals and Reference Value
Daytime light control does not operate properly.
1. Check 10A fuse [No. 82, located in fuse, fusible link and relay
box]. Verify battery positive voltage is present at terminal 3 of
daytime light control unit.
2. Check parking brake switch.
3. Check harness between parking brake switch and daytime light
control unit.
4. Check harness between alternator and daytime light control
unit.
5. Check daytime light control unit. Refer to
Reference Value for Daytime Light Control Unit"
.
Symptom
Repair Procedure
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