Infiniti QX56 (JA60). Manual — part 623
INL-20
< COMPONENT DIAGNOSIS >
INTERIOR ROOM LAMP CONTROL CIRCUIT
2.
CHECK INTERIOR ROOM LAMP CONTROL OPEN CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect BCM connector M20, door mirror connectors and
front room/map lamp assembly connector.
3. Check continuity between BCM connector M20 (A) terminal 63
and the door mirror connectors (B) and front room/map lamp
assembly connector (C).
4. Reconnect the front room/map lamp assembly connector.
5. Check continuity between BCM connector M20 (A) terminal 63
and the 2nd and 3rd row personal lamp connectors (B) terminal
1.
Is the inspection result normal?
YES
>> Check interior room lamps for an open. If OK, replace BCM. Refer to
. If NG, replace interior room lamp. Refer to
INL-77, "Removal and Installation"
.
NO
>> Repair the harness or connectors.
3.
CHECK INTERIOR ROOM LAMP CONTROL SHORT CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect BCM connector M20, door mirror connectors and
2nd and 3rd row personal lamp connectors.
3. Switch the front room/map lamp assembly switch to ON posi-
tion.
4. Check continuity between BCM connector M20 terminal 63 and
ground.
Is the inspection result normal?
YES
>> Check interior room lamps for a short circuit. If OK, replace BCM. Refer to
. If NG, replace interior room lamp. Refer to
INL-77, "Removal and Installation"
.
BCM
Interior room lamp
Continuity
Connector
Terminal
Component
Connector
Terminal
M20 (A)
63
Door mirror LH
D4 (B)
13
Yes
Door mirror RH
D107 (B)
13
Front room/map
lamp assembly
R102 (C)
1
AWLIA0968ZZ
BCM
Interior room lamp
Continuity
Connector
Terminal
Component
Connector
Terminal
M20 (A)
63
Personal lamp 2nd
row
R203 (B)
1
Yes
Personal lamp 3rd
row
R205 (B)
1
ALLIA0412GB
Connector
Terminal
—
Continuity
M20
63
Ground
No
ALLIA0413GB
INTERIOR ROOM LAMP CONTROL CIRCUIT
INL-21
< COMPONENT DIAGNOSIS >
C
D
E
F
G
H
I
J
K
M
A
B
INL
N
O
P
NO
>> Repair the harness or connectors.
INL-22
< COMPONENT DIAGNOSIS >
STEP LAMP CIRCUIT
STEP LAMP CIRCUIT
Description
INFOID:0000000005146733
Controls the front and rear step lamps and the foot lamps (ground side) to turn the lamps ON and OFF.
Component Function Check
INFOID:0000000005146734
CAUTION:
Before performing the diagnosis, check that the following is normal.
• Battery saver output/power supply
• Front step lamp bulbs
• Rear step lamp bulbs
• Foot lamp bulbs
1.
CHECK STEP LAMP OPERATION
CONSULT-III
1. Turn ignition switch ON.
2. Select “STEP LAMP TEST” of BCM (INT LAMP) active test item.
3. While operating the test item, check that the front/rear step lamps and foot lamps turn ON/OFF.
Is the inspection result normal?
YES
>> Step lamp circuit is normal.
NO
>> Refer to
.
Diagnosis Procedure
INFOID:0000000005146735
Regarding Wiring Diagram information, refer to
.
1.
CHECK STEP LAMP OUTPUT
CONSULT-III
1. Turn ignition switch ON.
2. Select “STEP LAMP TEST” of BCM (INT LAMP) active test item.
3. While operating the test item, check voltage between BCM har-
ness connector M20 terminal 62 and ground.
Is the inspection result normal?
YES
>> Step lamp circuit is operating normally.
Fixed ON>>GO TO 3
Fixed OFF>>GO TO 2
2.
CHECK STEP LAMP OPEN CIRCUIT
ON
: Step lamp ON
OFF
: Step lamp OFF
Connector
Terminal
—
STEP LAMP
TEST
Voltage
M20
62
Ground
ON
0V
OFF
Battery voltage
ALLIA0414GB
STEP LAMP CIRCUIT
INL-23
< COMPONENT DIAGNOSIS >
C
D
E
F
G
H
I
J
K
M
A
B
INL
N
O
P
1. Turn ignition switch OFF.
2. Disconnect BCM connector M20, front step lamp, rear step lamp
and foot lamp connectors.
3. Check continuity between BCM connector M20 (A) terminal 62
and step lamp connectors (B) and foot lamp connectors (C).
Is the inspection result normal?
YES
>> Check step lamp or foot lamp for an open. If OK, replace
BCM. Refer to
BCS-59, "Removal and Installation"
NG, replace step lamp or foot lamp. Refer to
.
NO
>> Repair harness or connectors.
3.
CHECK STEP LAMP SHORT CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect BCM connector M20, front and rear step lamp con-
nectors and foot lamp connectors.
3. Check continuity between BCM connector M20 terminal 62 and
ground.
Is the inspection result normal?
YES
>> Check step lamp or foot lamp for a short circuit. If OK,
replace BCM. Refer to
BCS-59, "Removal and Installa-
. If NG, replace step lamp or foot lamp. Refer to
INL-77, "Removal and Installation"
.
NO
>> Repair the harness or connectors.
Connector
Terminal
Connector
Terminal
Continuity
M20 (A)
62
Front step lamp LH
D11 (B)
2
Yes
Front step lamp RH
D109 (B)
2
Rear step lamp LH
D206 (B)
2
Rear step lamp RH
D306 (B)
2
Foot lamp LH
M99 (C)
2
Foot lamp RH
M100 (C)
2
ALLIA0415GB
Connector
Terminal
—
Continuity
M20
62
Ground
No
ALLIA0416GB
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