Page 2897 of 5121
![NISSAN TEANA 2008 Service Manual INL-18
< FUNCTION DIAGNOSIS >
DIAGNOSIS SYSTEM (BCM)
ACTIVE TEST
*: Each lamp switch is in ON position.Monitor item
[Unit]Description
REQ SW-DR
[On/Off]The switch status input from request switch (dri NISSAN TEANA 2008 Service Manual INL-18
< FUNCTION DIAGNOSIS >
DIAGNOSIS SYSTEM (BCM)
ACTIVE TEST
*: Each lamp switch is in ON position.Monitor item
[Unit]Description
REQ SW-DR
[On/Off]The switch status input from request switch (dri](/manual-img/5/57391/w960_57391-2896.png)
INL-18
< FUNCTION DIAGNOSIS >
DIAGNOSIS SYSTEM (BCM)
ACTIVE TEST
*: Each lamp switch is in ON position.Monitor item
[Unit]Description
REQ SW-DR
[On/Off]The switch status input from request switch (driver side)
REQ SW-AS
[On/Off]The switch status input from front request switch (passenger side)
PUSH SW
[On/Off]The switch status input from push-button ignition switch
KEY SW-SLOT
[On/Off]Key switch status input from key slot
DOOR SW-DR
[On/Off]The switch status input from front door switch (driver side)
DOOR SW-AS
[On/Off]The switch status input from front door switch (passenger side)
DOOR SW-RR
[On/Off]The switch status input from rear door switch RH
DOOR SW- RL
[On/Off]The switch status input from rear door switch LH
DOOR SW-BK
[On/Off]NOTE:
The item is indicated, but not monitored.
CDL LOCK SW
[On/Off]Lock switch status received from door lock/unlock switch
CDL UNLOCK SW
[On/Off]Unlock switch status received from door lock/unlock switch
KEY CYL LK-SW
[On/Off]NOTE:
The item is indicated, but not monitored.
KEY CYL UN-SW
[On/Off]NOTE:
The item is indicated, but not monitored.
TRNK/HAT MNTR
[On/Off]The switch status input from trunk room lamp switch
RKE-LOCK
[On/Off]Lock signal status received from remote keyless entry receiver
RKE-UNLOCK
[On/Off]Unlock signal status received from remote keyless entry receiver
Test item Operation Description
BATTERY SAVEROff Cuts the interior room lamp power supply to turn interior room lamp OFF.
On Outputs the interior room lamp power supply to turn interior room lamp ON.*
Page 2898 of 5121

POWER SUPPLY AND GROUND CIRCUIT
INL-19
< COMPONENT DIAGNOSIS >
C
D
E
F
G
H
I
J
K
MA
B
INL
N
O
P
COMPONENT DIAGNOSIS
POWER SUPPLY AND GROUND CIRCUIT
BCM
BCM : Diagnosis ProcedureINFOID:0000000003894738
1.CHECK FUSE AND FUSIBLE LINK
Check that the following fuse and fusible link are not blown.
Is the fuse fusing?
YES >> Replace the blown fuse or fusible link after repairing the affected circuit if a fuse or fusible link is
blown.
NO >> GO TO 2.
2.CHECK POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect BCM connectors.
3. Check voltage between BCM harness connector and ground.
Is the measurement value normal?
YES >> GO TO 3.
NO >> Repair harness or connector.
3.CHECK GROUND CIRCUIT
Check continuity between BCM harness connector and ground.
Does continuity exist?
YES >> INSPECTION END
NO >> Repair harness or connector.
Signal name Fuse and fusible link No.
Battery power supplyI
10
Te r m i n a l s
Vo l ta g e
(Approx.) (+) (−)
BCM
Ground Connector Terminal
M118 1
Battery voltage
M119 11
BCM
GroundContinuity
Connector Terminal
M119 13 Existed
Page 2899 of 5121

INL-20
< COMPONENT DIAGNOSIS >
INTERIOR ROOM LAMP POWER SUPPLY CIRCUIT
INTERIOR ROOM LAMP POWER SUPPLY CIRCUIT
DescriptionINFOID:0000000003774555
Provides the interior room lamp power supply. Also cuts the power supply when the interior room lamp battery
saver activating.
Component Function CheckINFOID:0000000003774556
1.CHECK INTERIOR ROOM LAMP POWER SUPPLY FUNCTION
CONSULT-III ACTIVE TEST
1. Turn ignition switch ON.
2. Turn each interior room lamp ON.
- Map lamp
- Personal lamp
- Step lamp
- Vanity mirror lamp
- Trunk room lamp
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 >> Interior room lamp power supply circuit is normal.
NO >> Refer to INL-20, "
Diagnosis Procedure".
Diagnosis ProcedureINFOID:0000000003774557
1.CHECK INTERIOR ROOM LAMP POWER SUPPLY OUTPUT
CONSULT-III ACTIVE TEST
1. Turn ignition switch ON.
2. Select “BATTERY SAVER” of BCM (BATTERY SAVER) active test item.
3. With operating the test item, check voltage between BCM harness connector and ground.
Is the measurement value normal?
YES >> GO TO 2.
NO >> Replace BCM.
2.CHECK INTERIOR ROOM LAMP POWER SUPPLY OPEN CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect the following connectors.
- Map lamp
- Personal lamp
- Vanity mirror lamp (driver side)
- Vanity mirror lamp (passenger side)
- Trunk room lamp
- Step lamp (driver side)
- Step lamp (passenger side)Off : Interior room lamp OFF
On : Interior room lamp ON
Te r m i n a l s
Te s t i t e m
Voltage (Ap-
prox.) (+) (-)
BCM
GroundBATTERY
SAVER
Connector Terminal
M119 4Off 0 V
OnBattery volt-
age
Page 2900 of 5121
INTERIOR ROOM LAMP POWER SUPPLY CIRCUIT
INL-21
< COMPONENT DIAGNOSIS >
C
D
E
F
G
H
I
J
K
MA
B
INL
N
O
P
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 INTERIOR ROOM LAMP POWER SUPPLY SHORT CIRCUIT
Check continuity between BCM harness connector 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
Continu-
ity Connec-
torTerminal Connector Terminal
M119 4Map lamp R19 1
Existed Personal lamp R21 1
Vanity mirror lamp
(driver side)R24 2
Vanity mirror lamp
(passenger side)R10 2
Trunk room lamp B91 1
Step lamp
(driver side)D17 1
Step lamp
(passenger side)D51 1
BCM
GroundContinuity
Connector Terminal
M119 4 Not existed
Page 2901 of 5121

INL-22
< COMPONENT DIAGNOSIS >
INTERIOR ROOM LAMP CONTROL CIRCUIT
INTERIOR ROOM LAMP CONTROL CIRCUIT
DescriptionINFOID:0000000003774558
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 CheckINFOID:0000000003774559
NOTE:
Replace the personal lamp assembly if the map lamp is turned ON but the personal lamp LH and RH are not
turn ON.
CAUTION:
Before performing the diagnosis, check that the following is normal.
• Interior room lamp power supply
Map lamp bulb
Personal lamp bulb
1.CHECK INTERIOR ROOM LAMP CONTROL FUNCTION
CONSULT-III ACTIVE TEST
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 operating the test items, check that each interior room lamp turns ON/OFF (gradual brightening/dim-
ming).
Does the interior room lamp turns ON/OFF (gradual brightening/dimming)?
YES >> Interior room lamp control circuit is normal.
NO >> Refer to INL-22, "
Diagnosis Procedure".
Diagnosis ProcedureINFOID:0000000003774560
1.CHECK INTERIOR ROOM LAMP CONTROL OUTPUT
CONSULT-III ACTIVE TEST
1. Turn ignition switch OFF.
2. Remove all the bulbs of map lamp and personal lamp.
3. Select “INT LAMP” of BCM (INT LAMP) active test item.
4. With operating the test item, check continuity between BCM harness connector and ground.
Is the measurement value normal?
YES >> GO TO 2.
Fixed ON>>GO TO 3.
Fixed OFF>>Replace BCM.
2.CHECK INTERIOR ROOM LAMP CONTROL OPEN CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect BCM connector and map lamp connector.
3. Check continuity between BCM harness connector and map lamp harness connector. On : Interior room lamp gradual brightening
Off : Interior room lamp gradual dimming
BCM
GroundTe s t i t e m
Continuity
Connector Terminal INT LAMP
M119 19On Existed
Off Not existed
Page 2902 of 5121
INTERIOR ROOM LAMP CONTROL CIRCUIT
INL-23
< COMPONENT DIAGNOSIS >
C
D
E
F
G
H
I
J
K
MA
B
INL
N
O
P
Does continuity exist?
YES >> Replace the map lamp.
NO >> Repair the harnesses or connectors.
3.CHECK INTERIOR ROOM LAMP CONTROL SHORT CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect BCM connector and map lamp connector.
3. Check continuity between BCM harness connector and ground.
Does continuity exist?
YES >> Repair the harnesses or connectors.
NO >> Replace BCM.
BCM Map lamp
Continuity
Connector Terminal Connector Terminal
M119 19 R19 2 Existed
BCM
GroundContinuity
Connector Terminal
M119 19 Not existed
Page 2903 of 5121

INL-24
< COMPONENT DIAGNOSIS >
STEP LAMP CIRCUIT
STEP LAMP CIRCUIT
DescriptionINFOID:0000000003774561
Controls the step lamp (ground side) to turn the step lamp ON and OFF.
Component Function CheckINFOID:0000000003774562
CAUTION:
Before performing the diagnosis, check that the following is normal.
Interior room lamp power supply
Step lamp bulb
1.CHECK STEP LAMP OPERATION
CONSULT-III ACTIVE TEST
1. Turn ignition switch ON.
2. Select "STEP LAMP TEST" of BCM (INT LAMP) active test item.
3. With operating the test items, check that step lamp turns ON/OFF.
Does the step lamp turn ON/OFF?
YES >> Step lamp circuit is normal.
NO >> Refer to INL-24, "
Diagnosis Procedure".
Diagnosis ProcedureINFOID:0000000003774563
1.CHECK STEP LAMP OUTPUT
CONSULT-III ACTIVE TEST
1. Turn ignition switch OFF.
2. Remove the step lamp bulbs (driver side and passenger side).
3. Turn ignition switch ON.
4. Select “STEP LAMP TEST” of BCM (INT LAMP) active test item.
5. With operating the test item, check continuity between BCM harness connector and ground.
Is the measurement value normal?
YES >> GO TO 2.
Fixed ON>>GO TO 3.
Fixed OFF>>Replace BCM.
2.CHECK STEP LAMP OPEN CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect BCM connector, and step lamp connector.
3. Check continuity between BCM harness connector and step lamp harness connector. On : Step lamp ON
Off : Step lamp OFF
BCM
GroundTe s t i t e m
Continuity
Connector TerminalSTEP LAMP
TEST
M119 7On Existed
Off Not existed
Page 2904 of 5121
STEP LAMP CIRCUIT
INL-25
< COMPONENT DIAGNOSIS >
C
D
E
F
G
H
I
J
K
MA
B
INL
N
O
P
Does continuity exist?
YES >> Replace step lamp.
NO >> Repair harnesses or connectors.
3.CHECK STEP LAMP SHORT CIRCUIT
1. Turn ignition switch OFF.
2. Check continuity between BCM harness connector and ground.
Does continuity exist?
YES >> Repair the harnesses or connectors.
NO >> Replace BCM.
BCM Step lamp
Continuity
Connec-
torTerminal Connector Terminal
M119 7Driver
sideD17 2
Existed
Passen-
ger sideD51 2
BCM
GroundContinuity
Connector Terminal
M119 7 Not existed