Nissan Pathfinder (2008 year). Manual — part 458
POWER SUPPLY AND GROUND CIRCUIT
INL-15
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COMPONENT DIAGNOSIS
POWER SUPPLY AND GROUND CIRCUIT
BCM
BCM : Inspection Procedure
INFOID:0000000001712573
POWER SUPPLY AND GROUND CIRCUIT INSPECTION FOR BCM
For information about power and ground circuit inspection for the BCM, refer to
.
INL-16
< COMPONENT DIAGNOSIS >
BATTERY SAVER OUTPUT/POWER SUPPLY CIRCUIT
BATTERY SAVER OUTPUT/POWER SUPPLY CIRCUIT
Description
INFOID:0000000001712574
Provides the battery saver output/power supply. Also cuts the power supply when the interior room lamp bat-
tery saver is activating.
Component Function Check
INFOID:0000000001712575
1.
CHECK BATTERY SAVER OUTPUT/POWER SUPPLY FUNCTION
CONSULT-III
1.
Turn ignition switch ON.
2.
Turn each interior room lamp ON.
-
Front room/map lamp assembly
-
Vanity lamps (if equipped)
-
Cargo lamp
-
Personal lamp 2nd row (with rear map lamps)
-
Room lamp 2nd row (without rear map lamps)
3.
Select "BATTERY SAVER" of BCM (BATTERY SAVER) active test item.
4.
With operating the test items, check that each interior room lamp turns ON/OFF.
Does the interior room lamp turn ON/OFF?
YES
>> Battery saver output/power supply circuit is normal.
NO
>> Refer to
.
Diagnosis Procedure
INFOID:0000000001712576
1.
CHECK BATTERY SAVER OUTPUT/POWER SUPPLY OUTPUT
CONSULT-III
1.
Turn ignition switch ON.
2.
Select “BATTERY SAVER” of BCM (BATTERY SAVER) active
test item.
3.
With test item operating, check voltage between BCM harness
connector M20 terminal 56 and ground.
Is the voltage reading as specified?
YES
>> GO TO 2
NO
>> Replace BCM. Refer to
BCS-54, "Removal and Installation"
2.
CHECK BATTERY SAVER OUTPUT/POWER SUPPLY OPEN CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect the following connectors.
-
BCM M20
-
Ignition key hole illumination
-
Front room/map lamp assembly
-
Vanity lamp LH (if equipped)
-
Vanity lamp RH (if equipped)
-
Cargo lamp
-
Personal lamp 2nd row (with rear map lamps)
-
Room lamp 2nd row (without rear map lamps)
OFF
: Interior room lamp OFF
ON
: Interior room lamp ON
(+)
(-)
Test item
Voltage
Connector
Terminal
BATTERY SAVER
M20
56
Ground
OFF
0V
ON
Battery voltage
ALLIA0408GB
BATTERY SAVER OUTPUT/POWER SUPPLY CIRCUIT
INL-17
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3.
Check continuity between BCM harness connector and each interior room lamp harness connector.
Does continuity exist?
YES
>> GO TO 3
NO
>> Repair the harnesses or connectors.
3.
CHECK BATTERY SAVER OUTPUT/POWER SUPPLY SHORT CIRCUIT
Check continuity between BCM harness connector M20 terminal 56
and ground.
Does continuity exist?
YES
>> Repair the harnesses or connectors.
NO
>> Check that each interior room lamp has no internal short
circuit.
BCM
Each interior room lamp
Continuity
Connector
Terminal
Connector
Terminal
M20
56
Ignition key hole illumination
M150
1
Yes
Front room/map lamp assembly
R9
1
Vanity lamp LH (if equipped)
B80
1
Vanity lamp RH (if equipped)
B81
1
Cargo lamp
R11
2
Personal lamp 2nd row (with rear map lamps)
R10
1
Room lamp 2nd row (without rear map lamps)
R12
2
Connector
Terminal
—
Continuity
M20
56
Ground
No
ALLIA0409GB
INL-18
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INTERIOR ROOM LAMP CONTROL CIRCUIT
INTERIOR ROOM LAMP CONTROL CIRCUIT
Description
INFOID:0000000001712577
Controls the following interior room lamps (ground side) by PWM signal
• Front room/map lamp assembly
• Personal lamp 2nd row (with rear map lamps)
• Room lamp 2nd row (without rear map lamps)
NOTE:
PWM signal control period is approximately 250 Hz (in the gradual brightening/dimming).
Component Function Check
INFOID:0000000001712578
CAUTION:
Before performing the diagnosis, check that the following is normal.
• Battery saver output/power supply
• Front room/map lamp bulbs
• Personal lamp 2nd row bulbs
• Room lamp 2nd row bulbs
1.
CHECK INTERIOR ROOM LAMP CONTROL FUNCTION
CONSULT-III
1.
Switch the map lamp switch to DOOR.
2.
Turn ignition switch ON.
3.
Select “INT LAMP” of BCM (INT LAMP) active test item.
4.
With the test items operating, check that each interior room lamp turns ON/OFF (gradual brightening/dim-
ming).
Do the interior room lamps turn ON/OFF (gradual brightening/dimming)?
YES
>> Interior room lamp control circuit is normal.
NO
>> Refer to
.
Diagnosis Procedure
INFOID:0000000001712579
1.
CHECK INTERIOR ROOM LAMP CONTROL OUTPUT
CONSULT-III
1.
Turn ignition switch ON.
2.
Select “INT LAMP” of BCM (INT LAMP) active test item.
3.
While operating the test item, check voltage between BCM har-
ness connector M20 terminal 63 and ground.
Are voltage readings as specified?
YES
>> Interior room lamp control circuit is operating normally.
Fixed ON>> GO TO 3
Fixed OFF>> GO TO 2
2.
CHECK INTERIOR ROOM LAMP CONTROL OPEN CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect BCM connector M20, personal lamp 2nd row connector (with rear map lamps) or room lamp
2nd row connector (without rear map lamps) and front room/map lamp connector.
ON
: Interior room lamp gradual brightening
OFF
: Interior room lamp gradual dimming
(+)
(-)
INT LAMP
Voltage
Connector
Terminal
M20
63
Ground
ON
0V
OFF
Battery voltage
ALLIA0410GB
INTERIOR ROOM LAMP CONTROL CIRCUIT
INL-19
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3.
Check continuity between BCM harness connector M20 terminal
63 and interior room lamp connectors.
Are the continuity test results as specified?
YES
>> Replace the BCM. Refer to
NO
>> Repair the harnesses or connectors.
3.
CHECK INTERIOR ROOM LAMP CONTROL SHORT CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect BCM connector M20, personal lamps 2nd row con-
nector (with rear map lamps) or room lamp 2nd row connector
(without rear map lamps).
3.
Check continuity between BCM harness connector and ground.
Does continuity exist?
YES
>> Repair the harnesses or connectors.
NO
>> Replace BCM. Refer to
BCS-54, "Removal and Installa-
.
Terminal
Terminal
Continuity
Connector
Terminal
Component
Connector
Terminal
A: M20
63
Front room/map
lamp
B: R9
1
Yes
Personal lamp
2nd row (with rear
map lamps)
C: R10
2
Room lamp 2nd
row (without rear
map lamps)
D: R12
1
ALLIA0648GB
Connector
Terminal
—
Continuity
M20
63
Ground
No
ALLIA0413GB
INL-20
< COMPONENT DIAGNOSIS >
CARGO LAMP CONTROL CIRCUIT
CARGO LAMP CONTROL CIRCUIT
Description
INFOID:0000000001712583
Controls the cargo lamp (ground side) to turn the cargo lamp ON and OFF.
Component Function Check
INFOID:0000000001712584
CAUTION:
Before performing the diagnosis, check that the following is normal.
• Battery saver output/power supply
• Cargo lamp bulb
1.
CHECK CARGO LAMP OPRATION
CONSULT-III
1.
Turn ignition switch ON.
2.
Select “LUGGAGE LAMP TEST” of BCM (INT LAMP) active test item.
3.
With operating the test items, check that cargo lamp turns ON/OFF.
Does the cargo lamp turn ON/OFF?
YES
>> Cargo lamp circuit is normal.
NO
>> Refer to
.
Diagnosis Procedure
INFOID:0000000001712585
1.
CHECK CARGO LAMP OUTPUT
CONSULT-III
1.
Turn ignition switch ON.
2.
Select “LUGGAGE LAMP TEST” of BCM (INT LAMP) active test
item.
3.
While operating the test item, check voltage between BCM har-
ness connector M19 terminal 49 and ground.
Are the voltage readings as specified?
YES
>> Cargo lamp control circuit is operating normally.
Fixed ON>> GO TO 3
Fixed OFF>> GO TO 2
2.
CHECK CARGO LAMP OPEN CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect BCM connector M19 and cargo lamp connector.
3.
Check continuity between BCM harness connector M19 (A) ter-
minal 49 and cargo lamp harness connector R11 (B) terminal 1.
Does continuity exist?
YES
>> Replace cargo lamp.
NO
>> Repair harnesses or connectors.
ON
: Cargo lamp ON
OFF
: Cargo lamp OFF
Connector
Terminal
—
LUGGAGE
LAMP TEST
Voltage
M19
49
Ground
ON
0V
OFF
Battery voltage
ALLIA0417GB
A
B
Continuity
Connector
Terminal
Connector
Terminal
M19
49
R11
1
Yes
ALLIA0418GB
CARGO LAMP CONTROL CIRCUIT
INL-21
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3.
CHECK CARGO LAMP SHORT CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect BCM connector M19 and cargo lamp connector R11.
3.
Check continuity between BCM harness connector M19 terminal
49 and ground.
Does continuity exist?
YES
>> Repair harnesses or connectors.
NO
>> Replace BCM. Refer to
BCS-54, "Removal and Installa-
.
Connector
Terminal
—
Continuity
M19
49
Ground
No
ALLIA0419GB
INL-22
< COMPONENT DIAGNOSIS >
IGNITION KEYHOLE ILLUMINATION CONTROL CIRCUIT
IGNITION KEYHOLE ILLUMINATION CONTROL CIRCUIT
Description
INFOID:0000000001712586
Controls the ignition keyhole illumination (ground side) to turn the ignition keyhole illumination ON and OFF.
Component Function Check
INFOID:0000000001712587
CAUTION:
Before performing the diagnosis, check that the following is normal.
• Battery saver output/power supply circuit
• Ignition keyhole illumination bulb
1.
CHECK IGNITION KEYHOLE ILLUMINATION OPERATION
CONSULT-III
1.
Turn the ignition switch ON.
2.
Select “IGN ILLUM” of BCM (INT LAMP) active test item.
3.
With operating the test items, check that the ignition keyhole illumination turns ON/OFF
Does the ignition keyhole illumination turn ON/OFF?
YES
>> Ignition keyhole illumination circuit is normal.
NO
>> Refer to
.
Diagnosis Procedure
INFOID:0000000001712588
1.
CHECK IGNITION KEYHOLE OUTPUT
CONSULT-III
1.
Turn ignition switch ON.
2.
Select “IGN ILLUM” of BCM (INT LAMP) active test item.
3.
While operating the test item, check voltage between BCM har-
ness connector M18 terminal 1 and ground.
Are the voltage readings as specified?
YES
>> Ignition keyhole illumination control circuit is operating
normally.
Fixed ON>> GO TO 3.
Fixed OFF>> GO TO 2.
2.
CHECK IGNITION KEYHOLE ILLUMINATION OPEN CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect BCM connector M18 and ignition keyhole illumina-
tion connector M150.
3.
Check continuity between BCM harness connector M18 (A) ter-
minal 1 and ignition keyhole illumination harness connector
M150 (B) terminal 2.
Does continuity exist?
YES
>> Replace ignition keyhole illumination.
ON
: Ignition keyhole illumination ON
OFF
: Ignition keyhole illumination OFF
Connector
Terminal
—
IGN ILLUM
Voltage
M18
1
Ground
ON
0V
OFF
Battery voltage
ALLIA0420GB
A
B
Continuity
Connector
Terminal
Connector
Terminal
M18
1
M150
2
Yes
ALLIA0421GB
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