Infiniti Q45. Manual — part 672
HEADLAMP (FOR USA)
LT-25
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B
LT
Lighting Switch (AUTO) System Check
NKS0017F
1.
CHECK LIGHTING SWITCH AUTO SIGNAL
With CONSULT-II
●
Operate the lighting switch via “AUTO LIGHT SW” on DATA
MONITOR screen and make sure that the lamp turns on and off
as commanded.
Without CONSULT-II
●
Operate the lighting switch via “switch monitor” of self-diagnosis function make sure that the lamp turns on
and off as commanded.
OK or NG
OK
>> Lighting switch (AUTO) is OK.
NG
>> GO TO 2.
2.
CHECK WIRE HARNESS CONTINUITY
1.
Turn ignition switch OFF.
2.
Disconnect BCM connector and lighting switch connector.
3.
Check continuity between harness between BCM harness con-
nector M4 terminal 14 and lighting switch harness connector
M55 terminal 42.
4.
Check continuity between BCM harness connector M4 terminal
14 and ground.
OK or NG
OK
>> GO TO 3.
NG
>> Repair harness or connector.
3.
CHECK LIGHTING SWITCH
Check continuity of the lighting switch. Refer to
LT-28, "Switch Circuit Inspection"
.
OK or NG
OK
>> Replace BCM.
NG
>> Replace lighting switch.
Lighting switch AUTO
: AUTO LIGHT SW ON
Lighting switch OFF
: AUTO LIGHT SW OFF
SKIA0451E
14 - 42
: Continuity should exist.
14 - Ground
: Continuity should not exist.
PKIA5129E
LT-26
HEADLAMP (FOR USA)
Optical Sensor System Check
NKS0017G
1.
CHECK OPTICAL SENSOR OUTPUT SIGNAL
With CONSULT-II
●
Using “OPTICAL SEN” on DATA MONITOR screen, check differ-
ence in the voltage when light is applied to optical sensor and
light is not applied to optical sensor.
Without CONSULT-II
1.
Turn ignition switch ACC.
2.
Check voltage between BCM harness connector and ground
when light is applied to optical sensor and light is not applied to
optical sensor.
OK or NG
OK
>> INSPECTION END
NG
>> GO TO 2.
2.
CHECK OPTICAL SENSOR POWER SUPPLY CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect the BCM connector and optical sensor connector.
3.
Check continuity between BCM harness connector M4 terminal
59 and optical sensor harness connector M110 terminal 1.
4.
Check continuity between BCM harness connector M4 terminal
59 and ground.
OK or NG
OK
>> GO TO 3.
NG
>> Repair harness or connector.
Condition
Reference value of data monitor
Light is applied to optical sensor.
More than 3 V
Light is not applied to optical sensor.
Approx. 0.5 V
SKIA0454E
Terminal
Condition
Voltage
(+)
(–)
Connector
Terminal
M4
52
Ground
Light is applied to optical
sensor.
More than 3 V
Light is not applied to
optical sensor.
Approx. 0.5 V
PKIA5130E
59 - 1
: Continuity should exist.
59 - Ground
: Continuity should not exist.
PKIA5131E
HEADLAMP (FOR USA)
LT-27
C
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A
B
LT
3.
CHECK OPTICAL SENSOR SIGNAL CIRCUIT
1.
Check continuity between BCM harness connector M4 terminal
52 and optical sensor harness connector M110 terminal 2.
2.
Check continuity between BCM harness connector M4 terminal
52 and ground.
OK or NG
OK
>> GO TO 4.
NG
>> Repair harness or connector.
4.
CHECK OPTICAL SENSOR GROUND CIRCUIT
1.
Check continuity between BCM harness connector M4 terminal
58 and optical sensor harness connector M110 terminal 3.
2.
Check continuity between BCM harness connector M4 terminal
58 and ground.
OK or NG
OK
>> GO TO 5.
NG
>> Repair harness or connector.
5.
CHECK OPTICAL SENSOR POWER SUPPLY OUTPUT SIGNAL
1.
Connect BCM connector.
2.
Turn ignition switch ON.
3.
Check voltage between BCM harness connector M4 terminal 59
and ground.
OK or NG
OK
>> Replace optical sensor.
NG
>> Replace BCM.
Headlamp Relay System Check
NKS0017H
1.
CHECK HEADLAMP RELAY CONTROL SIGNAL VOLTAGE
1.
Turn ignition switch OFF.
2.
Disconnect BCM connector.
3.
Check voltage between BCM harness connector M4 terminal 5
and ground while operating lighting switch in OFF position.
OK or NG
OK
>> Headlamp relay is OK.
NG
>> Check harness for open or short between BCM and
headlamp relay-1 and 2.
52 - 2
: Continuity should exist.
52 - Ground
: Continuity should not exist.
PKIA5132E
58 - 3
: Continuity should exist.
58 - Ground
: Continuity should not exist.
PKIA5133E
59 - Ground
: Approx. 5 V
PKIA6637E
5 - Ground
: Battery voltage
PKIA5134E
LT-28
HEADLAMP (FOR USA)
Tail Lamp Relay System Check
NKS0017I
1.
CHECK TAIL LAMP RELAY CONTROL SIGNAL VOLTAGE
1.
Turn ignition switch OFF.
2.
Disconnect BCM connector.
3.
Check voltage between BCM harness connector M4 terminal 11
and ground while operating lighting switch in OFF position.
OK or NG
OK
>> GO TO 2.
NG
>> Check harness for open or short between BCM and tail
lamp relay.
2.
CHECK TAIL LAMP SIGNAL VOLTAGE
Check voltage between BCM harness connector M4 terminal 3 and
ground while operating lighting switch in 1ST position.
OK or NG
OK
>> Tail lamp relay is OK.
NG
>> GO TO 3.
3.
CHECK TAIL LAMP RELAY
1.
Remove the tail lamp relay.
2.
Apply 12V between tail lamp relay terminals 2 and 1, and check
continuity between terminals 6 and 7.
OK or NG
OK
>> Check harness for open or short between BCM and tail
lamp relay.
NG
>> Replace tail lamp relay.
Switch Circuit Inspection
NKS0017J
●
Using circuit tester, check continuity between lighting switch connector terminals in each operation status
of switch.
Hi: “HIGH BEAM” position, Lo: “LOW BEAM” position, P: “FLASH TO PASS” position
11 - Ground
: Battery voltage
PKIA5135E
3 - Ground
: Battery voltage
PKIA5136E
6 - 7
: Continuity should exist.
SEC202B
PKIA7897E
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