Infiniti Q45. Manual — part 700
INTERIOR ROOM LAMP
LT-137
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LT
Symptom Chart
NKS0019Z
*1: When BCM input/output signal are normal .
Interior Lamp Illumination Switch System Check
NKS001A0
1.
CHECK INTERIOR LAMP ILLUMINATION SWITCH SIGNAL
1.
Turn ignition switch OFF.
2.
Disconnect the BCM connector.
3.
Check continuity between BCM harness connector and ground
while operating interior lamp illumination switch.
OK or NG
OK
>> Interior lamp illumination switch is OK.
NG
>> GO TO 2.
Symptom
Malfunctioning system and reference
●
Map lamp and personal lamp will not illuminate when the interior lamp illu-
mination switch is turned ON with the personal lamp switch in AUTO posi-
tion.
●
Map lamp and personal lamp will not go out when the interior lamp illumi-
nation switch is turned OFF with the personal lamp switch in AUTO posi-
tion.
●
Interior lamp illumination switch system. Refer to
137, "Interior Lamp Illumination Switch System
Check"
If above system is normal, replace the BCM.
●
Personal lamp will not illuminate when RH personal lamp switch is turned
ON with LH personal lamp switch in AUTO position.
●
Personal lamp will not illuminate when LH personal lamp switch is turned
ON with RH personal lamp switch in AUTO position.
●
Personal lamp switch will not go out when both RH and LH personal lamp
switches are turned to AUTO position.
●
Personal lamp switch system. Refer to
sonal Lamp Switch System Check"
If above system is normal, replace the BCM.
●
All lamps (except step lamp) will not illuminate in the lamp illumination
conditions with the interior lamp illumination switch and RH and LH per-
sonal lamp switches in AUTO position.
●
All lamps (except step lamp) will not go out in the lamp off conditions with
the interior lamp switch and RH and LH personal lamp switches in AUTO
position.
●
Interior lamp illumination switch system. Refer to
137, "Interior Lamp Illumination Switch System
Check"
●
Door switch system. Refer to
●
Key-in detection switch system. Refer to
"Key Switch and Key Lock Solenoid System Check"
If above system is normal, replace the BCM.
●
Lamps illuminate fully in half illumination conditions.
●
Dimming function will not operate when turning the lamp off.
Replace the BCM.*1
Terminal
Condition
Continuity
Connector
Terminal
Ground
R4
130
Interior lamp switch ON
Yes
Interior lamp switch OFF
and AUTO
No
131
Interior lamp switch OFF
Yes
Interior lamp switch OFF
and AUTO
No
PKIA5139E
LT-138
INTERIOR ROOM LAMP
2.
CHECK WIRE HARNESS CONTINUITY
1.
Disconnect front interior lamp connector.
2.
Check continuity between BCM harness connector and front
interior lamp harness connector.
3.
Check continuity between BCM harness connector and ground.
OK or NG
OK
>> GO TO 3.
NG
>> Repair harness or connector.
3.
CHECK GROUND CIRCUIT
Check continuity between front interior lamp harness connector R6
terminal 3 and ground.
OK or NG
OK
>> Check interior lamp illumination switch.
NG
>> Repair harness or connector.
Personal Lamp Switch System Check
NKS001A1
1.
CHECK PERSONAL LAMP SWITCH SIGNAL
1.
Turn ignition switch OFF.
2.
Disconnect BCM connector.
3.
Check continuity between BCM harness connector R4 terminal
129 and ground while operating personal lamp switch.
OK or NG
OK
>> Personal lamp switch is OK.
NG
>> GO TO 2.
Terminal
Continuity
Connector
Terminal
Connector
Terminal
R4
130
R6
6
Yes
131 7
130
Ground
No
131
PKIA5140E
3 - Ground
: Continuity should exist.
PKIA5141E
RH and LH personal
lamp switches in HALF
or AUTO position
: Continuity should not exist.
RH or LH personal lamp
switch in FULL position
: Continuity should exist.
PKIA5142E
INTERIOR ROOM LAMP
LT-139
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LT
2.
CHECK WIRE HARNESS CONTINUITY
1.
Disconnect rear interior lamp connector.
2.
Check continuity between BCM harness connector R4 terminal
129 and rear interior lamp harness connector R13 terminal 5.
3.
Check continuity between BCM harness connector R4 terminal
129 and ground.
OK or NG
OK
>> GO TO 3.
NG
>> Repair harness or connector.
3.
CHECK GROUND CIRCUIT
Check continuity between rear interior lamp harness connector R13
terminal 3 and ground.
OK or NG
OK
>> Replace personal lamp switch.
NG
>> Repair harness or connector.
Door Switch System Check
NKS001A2
1.
CHECK DOOR SWITCH SIGNAL
With CONSULT-II
●
Operate each door via “DOOR SW” on DATA MONITOR screen
and make sure that switch turns on and off as commanded.
Without CONSULT-II
●
Operate each door and via “switch monitor” of self-diagnosis function and make sure that the switch turns
on and off as commanded.
OK or NG
OK
>> Door switch is OK.
NG
>> GO TO 2.
129 - 5
: Continuity should exist.
129 - Ground
: Continuity should not exist.
PKIA5143E
3 - Ground
: Continuity should exist.
PKIA5144E
SKIA0441E
LT-140
INTERIOR ROOM LAMP
2.
CHECK DOOR SWITCH HARNESS CONTINUITY
1.
Turn ignition switch OFF.
2.
Disconnect each door switch connector and BCM connector.
3.
Check continuity between each door switch harness connector
and BCM harness connector.
OK or NG
OK
>>
●
Check door switch ground condition.
●
Replace door switch.
NG
>> Repair harness or connector.
PKIB1690E
Terminal
Continuity
BCM
connector
Terminal Door
switch
connector
Terminal
B4
142
B20
Front door switch
(driver side)
1
Yes
143
D82
Door lock assembly
rear RH (door switch)
1
M4
33 D62
Door lock assembly
rear LH (door switch)
1
37
B220
Front door switch
(passenger side)
1
PKIB1691E
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