Nissan Sentra. Manual — part 599
BATTERY SAVER OUTPUT/POWER SUPPLY CIRCUIT
INL-43
< DTC/CIRCUIT DIAGNOSIS >
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BATTERY SAVER OUTPUT/POWER SUPPLY CIRCUIT
Description
INFOID:0000000009757586
Provides the battery saver output/power supply. Also cuts the power supply when the interior lamp battery
saver is activated.
Component Function Check
INFOID:0000000009757587
1.
CHECK BATTERY SAVER OUTPUT/POWER SUPPLY FUNCTION
CONSULT
1. Turn ignition switch ON.
2. Turn each interior lamp to the ON position.
-
Interior room lamp
-
Vanity mirror lamps
-
Map lamp
-
Trunk room lamp
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:0000000009757588
Regarding Wiring Diagram information, refer to
.
1.
CHECK BATTERY SAVER OUTPUT/POWER SUPPLY OUTPUT
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 connector and ground.
With Intelligent Key
Without Intelligent Key
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Replace BCM after making sure battery saver output/power supply circuit is not shorted to volt-
BCS-73, "Removal and Installation"
(with Intelligent Key) or
(without Intelligent Key).
2.
CHECK BATTERY SAVER OUTPUT/POWER SUPPLY OPEN CIRCUIT
OFF
: Interior room lamp OFF
ON
: Interior room lamp ON
BCM
Ground
Test item
Voltage
Connector
Terminal
BATTERY SAVER
M85
89
OFF
0V
ON
Battery voltage
BCM
Ground
Test item
Voltage
Connector
Terminal
BATTERY SAVER
M20
62
OFF
0V
ON
Battery voltage
INL-44
< DTC/CIRCUIT DIAGNOSIS >
BATTERY SAVER OUTPUT/POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect the following connectors.
-
BCM
-
Interior room lamp
-
Vanity mirror lamp LH
-
Vanity mirror lamp RH
-
Map lamp
-
Trunk room lamp
3. Check continuity between BCM connector and each interior lamp connector.
With Intelligent Key
Without Intelligent Key
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Repair or replace the harness or connector.
3.
CHECK BATTERY SAVER OUTPUT/POWER SUPPLY SHORT CIRCUIT
Check continuity between BCM connector and ground.
With Intelligent Key
Without Intelligent Key
Is the inspection result normal?
YES
>> Check that each interior room lamp has no internal short circuit.
NO
>> Repair or replace the harness or connector.
BCM
Each interior lamp
Continuity
Connector
Terminal
Connector
Terminal
M85
89
Interior room lamp
R5
3
Yes
Vanity mirror lamp LH
R7
2
Vanity mirror lamp RH
R8
2
Map lamp
R3
1
Trunk room lamp
B58
1
BCM
Each interior lamp
Continuity
Connector
Terminal
Connector
Terminal
M20
62
Interior room lamp
R5
3
Yes
Vanity mirror lamp LH
R7
2
Vanity mirror lamp RH
R8
2
Map lamp
R3
1
Trunk room lamp
B58
1
Connector
Terminal
—
Continuity
M85
89
Ground
No
Connector
Terminal
—
Continuity
M20
62
Ground
No
INTERIOR ROOM LAMP CONTROL CIRCUIT
INL-45
< DTC/CIRCUIT DIAGNOSIS >
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INTERIOR ROOM LAMP CONTROL CIRCUIT
Description
INFOID:0000000009757589
Controls each interior room lamp (ground side) by PWM signal.
NOTE:
PWM signal control period is approximately 250 Hz (in the gradual brightening/dimming).
Component Function Check
INFOID:0000000009757590
CAUTION:
Before performing the diagnosis, check that the following are normal.
• Interior room lamp power supply
• Room lamp bulb
• Map lamp bulb
1.
CHECK INTERIOR ROOM LAMP CONTROL FUNCTION
CONSULT ACTIVE TEST
1. Se the map lamp switch or room lamp switch to DOOR.
2. Turn ignition switch ON.
3. Select INT LAMP of BCM (INT LAMP) active test item.
4. While operating the test items, check that each interior room lamp turns ON/OFF (gradual brightening/
dimming).
Does the interior room lamp turns ON/OFF (gradual brightening/dimming)?
YES
>> Interior room lamp control circuit is normal.
NO
>> Refer to
.
Diagnosis Procedure
INFOID:0000000009757591
Regarding Wiring Diagram information, refer to
.
1.
CHECK INTERIOR ROOM LAMP CONTROL OUTPUT
CONSULT ACTIVE TEST
1. Turn ignition switch OFF.
2. Remove all the bulbs of room lamp and map lamp.
3. Turn ignition switch ON.
4. Select INT LAMP of BCM (INT LAMP) active test item.
5. While operating the test item, check continuity between BCM harness connector and ground.
With Intelligent Key
Without Intelligent Key
Is the inspection result normal?
YES
>> Interior room lamp control circuit is operating normally.
Fixed ON>>GO TO 3.
On
: Interior room lamp gradual brightening
Off
: Interior room lamp gradual dimming
BCM
Ground
Test item
Continuity
Connector
Terminal
M85
82
INT LAMP
On
Yes
Off
No
BCM
Ground
Test item
Continuity
Connector
Terminal
M20
60
INT LAMP
On
Yes
Off
No
INL-46
< DTC/CIRCUIT DIAGNOSIS >
INTERIOR ROOM LAMP CONTROL CIRCUIT
Fixed OFF>>GO TO 2.
2.
CHECK INTERIOR ROOM LAMP CONTROL OPEN CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect BCM connector and room lamp and map lamp connector.
3. Check continuity between BCM harness connector and room lamp harness connector.
With Intelligent Key
Without Intelligent Key
Is the inspection result normal?
YES
>> Check interior room lamps for an open. If NG, replace lamp in question. Refer to
INL-52, "Removal and Installation"
replace BCM. Refer to
BCS-73, "Removal and Installation"
(with Intelligent Key),
(without Intelligent Key).
NO
>> Repair or replace harness or connector.
3.
CHECK INTERIOR ROOM LAMP CONTROL SHORT TO GROUND
1. Turn ignition switch OFF.
2. Disconnect BCM connector.
3. Check continuity between BCM harness connector and ground.
With Intelligent Key
Without Intelligent Key
Is the inspection result normal?
YES
>> Check interior room lamps for an internal short to ground. If NG, replace lamp in question. Refer to
INL-55, "Removal and Installation"
(room lamp) or
INL-52, "Removal and Installation"
(map
lamp). If OK, replace BCM. Refer to
BCS-73, "Removal and Installation"
(with Intelligent Key),
BCS-126, "Removal and Installation"
NO
>> Repair or replace harness or connector.
BCM
Room lamp
Map lamp
Continuity
Connector
Terminal
Connector
Terminal
Connector
Terminal
M85
82
R5
2
R3
3
Yes
BCM
Room lamp
Map lamp
Continuity
Connector
Terminal
Connector
Terminal
Connector
Terminal
M20
60
R5
2
R3
3
Yes
BCM
Ground
Continuity
Connector
Terminal
M85
82
No
BCM
Ground
Continuity
Connector
Terminal
M20
60
No
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