Nissan Frontier. Instruction — part 922
POWER SUPPLY AND GROUND CIRCUIT
INL-15
< DTC/CIRCUIT DIAGNOSIS >
[WITH POWER DOOR LOCKS]
C
D
E
F
G
H
I
J
K
M
A
B
INL
N
O
P
Check continuity between BCM harness connector and ground.
Does continuity exist?
YES
>> Inspection End.
NO
>> Repair or replace harness.
BCM
Ground
Continuity
Connector
Terminal
M20
67
Yes
LIIA0915E
INL-16
< DTC/CIRCUIT DIAGNOSIS >
[WITH POWER DOOR LOCKS]
BATTERY SAVER OUTPUT/POWER SUPPLY CIRCUIT
BATTERY SAVER OUTPUT/POWER SUPPLY CIRCUIT
Description
INFOID:0000000009480136
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:0000000009480137
1.
CHECK BATTERY SAVER OUTPUT/POWER SUPPLY FUNCTION
WITH CONSULT
1. Turn ignition switch ON.
2. Turn each interior room lamp ON.
-
Front room/map lamp assembly
-
Vanity lamps (if equipped)
-
Room lamp 2nd row
3. Select “BATTERY SAVER” of BCM (BATTERY SAVER) active test item.
4. While operating the test item, check that each interior room lamp turns ON/OFF.
Is the inspection result normal?
YES
>> Battery saver output/power supply circuit is normal.
NO
>> Refer to
.
Diagnosis Procedure
INFOID:0000000009480138
Regarding Wiring Diagram information, refer to
INL-37, "Wiring Diagram - With Power Door Lock System"
.
1.
CHECK BATTERY SAVER OUTPUT/POWER SUPPLY OUTPUT
WITH CONSULT
1. Turn ignition switch ON.
2. Select “BATTERY SAVER” of BCM (BATTERY SAVER) active
test item.
3. While operating the test item, check voltage between BCM con-
nector M20 terminal 56 and ground.
Is the inspection result normal?
YES
>> GO TO 2
NO
>> Replace BCM after making sure the battery saver output/power supply circuit is not shorted to
voltage. Refer to
BCS-49, "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 keyhole illumination (if equipped)
-
Front room/map lamp assembly
-
Vanity lamp LH (if equipped)
-
Vanity lamp RH (if equipped)
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
< DTC/CIRCUIT DIAGNOSIS >
[WITH POWER DOOR LOCKS]
C
D
E
F
G
H
I
J
K
M
A
B
INL
N
O
P
-
Room lamp 2nd row
3. Check continuity between BCM connector M20 terminal 56 and each interior room lamp connector.
Is the inspection result normal?
YES
>> GO TO 3
NO
>> Repair the harness or connectors.
3.
CHECK BATTERY SAVER OUTPUT/POWER SUPPLY SHORT CIRCUIT
Check continuity between BCM connector M20 terminal 56 and
ground.
Is the inspection result normal?
YES
>> Replace the interior room lamp. Refer to
.
NO
>> Repair the harness or connectors.
BCM
Each interior room lamp
Continuity
Connector
Terminal
Connector
Terminal
M20
56
Ignition keyhole illumination (if equipped)
M150
1
Yes
Front room/map lamp assembly
R9
1
Vanity lamp LH (if equipped)
B80
1
Vanity lamp RH (if equipped)
B81
1
Room lamp 2nd row
R10
2
Connector
Terminal
—
Continuity
M20
56
Ground
No
ALLIA0409GB
INL-18
< DTC/CIRCUIT DIAGNOSIS >
[WITH POWER DOOR LOCKS]
INTERIOR ROOM LAMP CONTROL CIRCUIT
INTERIOR ROOM LAMP CONTROL CIRCUIT
Description
INFOID:0000000009480139
Controls the following interior room lamps (ground side) by PWM signal.
• Front room/map lamp assembly
• Room lamp 2nd row
NOTE:
PWM signal control period is approximately 250 Hz (in the gradual brightening/dimming).
Component Function Check
INFOID:0000000009480140
CAUTION:
Before performing the diagnosis, check that the following is normal.
• Battery saver output/power supply
• Front room/map lamp bulbs (if equipped)
• Room lamp 2nd row bulb
1.
CHECK INTERIOR ROOM LAMP CONTROL FUNCTION
WITH CONSULT
1. Switch the front room/map lamp assembly and room lamp 2nd row switches to DOOR.
2. Turn ignition switch ON.
3. Select “INT LAMP” of BCM (INT LAMP) active test item.
4. While operating the test item, check that each interior room lamp turns ON/OFF (gradual brightening/dim-
ming).
Is the inspection result normal?
YES
>> Interior room lamp control circuit is normal.
NO
>> Refer to
.
Diagnosis Procedure
INFOID:0000000009480141
Regarding Wiring Diagram information, refer to
INL-37, "Wiring Diagram - With Power Door Lock System"
.
1.
CHECK INTERIOR ROOM LAMP CONTROL OUTPUT
WITH CONSULT
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 con-
nector M20 terminal 63 and ground.
Is the inspection result normal?
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
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
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