Nissan Frontier. Instruction — part 923
INTERIOR ROOM LAMP CONTROL CIRCUIT
INL-19
< DTC/CIRCUIT DIAGNOSIS >
[WITH POWER DOOR LOCKS]
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, room lamp 2nd row connector
and front room/map lamp connector.
3. Check continuity between BCM connector M20 (A) terminal 63
and interior room lamp connectors.
Is the inspection result normal?
YES
>> Check interior room lamp for an open. If OK, replace the
BCM. Refer to
BCS-49, "Removal and Installation"
NG, replace the interior room lamp. Refer to
.
NO
>> Repair the harness or connectors.
3.
CHECK INTERIOR ROOM LAMP CONTROL SHORT CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect BCM connector M20, room lamp 2nd row connector
and front room/map lamp connector.
3. Check continuity between BCM connector M20 terminal 63 and
ground.
Is the inspection result normal?
YES
>> Check interior room lamp for a short circuit. If OK,
replace the BCM. Refer to
. If NG, replace the interior room lamp. Refer to
INL-63, "Removal and Installation"
.
NO
>> Repair the harness or connectors.
Terminal
Terminal
Continuity
Connector
Terminal
Component
Connector
Terminal
M20 (A)
63
Room lamp 2nd
row
R10 (B)
1
Yes
Front room/map
lamp
R9 (C)
2
AWLIA0727ZZ
Connector
Terminal
—
Continuity
M20
63
Ground
No
ALLIA0413GB
INL-20
< DTC/CIRCUIT DIAGNOSIS >
[WITH POWER DOOR LOCKS]
CARGO LAMP CONTROL CIRCUIT
CARGO LAMP CONTROL CIRCUIT
Description
INFOID:0000000009480142
Controls the cargo lamp relay coil (ground side) to turn the cargo lamp ON and OFF.
Diagnosis Procedure
INFOID:0000000009480143
Regarding Wiring Diagram information, refer to
INL-37, "Wiring Diagram - With Power Door Lock System"
.
CAUTION:
Before performing the diagnosis, check that the following is normal.
• Fuse
• Cargo lamp bulb
1.
CHECK CARGO LAMP OPERATION
Check the cargo lamp operation from the cargo lamp switch, the door switches, and a keyfob (if equipped).
Is the cargo lamp operative from all of the above switches and the keyfob (if equipped)?
YES
>> At this time, the cargo lamp operates normally.
NO
>> • Inoperative from all the above switches and the keyfob, GO TO 6
• Inoperative from cargo lamp switch only, GO TO 2
• Inoperative from door switches only, refer to
DLK-27, "KING CAB : Description"
(crew cab).
• Inoperative from keyfob only, refer to
• Fixed ON, GO TO 2
2.
CHECK CARGO LAMP SWITCH
Check the cargo lamp switch. Refer to
INL-22, "Component Inspection"
Is the inspection result normal?
YES
>> • For inoperative from cargo lamp switch only, GO TO 3
• For fixed ON, GO TO 5
NO
>> Replace the cargo lamp switch.
3.
CHECK CARGO LAMP SWITCH CIRCUIT OPEN
1. Disconnect BCM connector M18 and cargo lamp switch connector.
2. Check continuity between BCM connector M18 terminal 31 and cargo lamp switch connector M71 termi-
nal 1.
Is the inspection result normal?
YES
>> GO TO 4
NO
>> Repair harness or connectors.
4.
CHECK CARGO LAMP SWITCH GROUND CIRCUIT
1. Check continuity between cargo lamp switch connector M71 terminal 3 and ground.
Is the inspection result normal?
YES
>> Replace BCM. Refer to
BCS-49, "Removal and Installation"
NO
>> Repair harness or connectors.
BCM
Cargo lamp switch
Continuity
Connector
Terminal
Connector
Terminal
M18
31
M71
1
Yes
Connector
Terminal
—
Continuity
M71
3
Ground
Yes
CARGO LAMP CONTROL CIRCUIT
INL-21
< DTC/CIRCUIT DIAGNOSIS >
[WITH POWER DOOR LOCKS]
C
D
E
F
G
H
I
J
K
M
A
B
INL
N
O
P
5.
CHECK CARGO LAMP SWITCH CIRCUIT SHORT
1. Disconnect BCM connector M18 and cargo lamp switch connector.
2. Check continuity between BCM connector M18 terminal 31 and ground.
Is the inspection result normal?
YES
>> GO TO 6
NO
>> Repair harness or connectors.
6.
CHECK CARGO LAMP RELAY
Check the cargo lamp relay. Refer to
INL-22, "Component Inspection"
.
Is the inspection result normal?
YES
>> • For fixed OFF, GO TO 7
• For fixed ON, GO TO 13
NO
>> Replace the cargo lamp relay.
7.
CHECK CARGO LAMP RELAY CONTROL
While operating the cargo lamp switch, check voltage between BCM
connector M19 terminal 50 and ground.
Is the inspection result normal?
YES
>> GO TO 8
NO
>> GO TO 11
8.
CHECK CARGO LAMP VOLTAGE
1. Disconnect the cargo lamp connector.
2. While operating the cargo lamp switch, check voltage between cargo lamp connector B161 terminal 3 and
ground.
Is the inspection result normal?
YES
>> GO TO 9
NO
>> GO TO 10
9.
CHECK CARGO LAMP GROUND CIRCUIT
1. While operating the cargo lamp switch, check voltage between cargo lamp connector B161 terminal 3 and
terminal 2.
Is the inspection result normal?
YES
>> Replace cargo lamp.
NO
>> Repair harness or connectors.
10.
CHECK CARGO LAMP RELAY VOLTAGE PART 1
Connector
Terminal
—
Continuity
M18
31
Ground
No
Connector
Terminal
—
Cargo lamp
switch
Voltage
M19
50
Ground
ON
0V
OFF
Battery voltage
ALLIA0556GB
Connector
Terminal
—
Cargo lamp
switch
Voltage
B161
3
Ground
ON
Battery voltage
Connector
Terminal
(+)
Terminal
(-)
Cargo lamp
switch
Voltage
B161
3
2
ON
Battery voltage
INL-22
< DTC/CIRCUIT DIAGNOSIS >
[WITH POWER DOOR LOCKS]
CARGO LAMP CONTROL CIRCUIT
Check voltage between cargo lamp relay connector M165 terminal 5
and ground.
Is the inspection result normal?
YES
>> Repair harness or connectors between cargo lamp relay
and cargo lamp.
NO
>> Repair harness or connector between splice and cargo
lamp relay.
11.
CHECK CARGO LAMP RELAY VOLTAGE PART 2
Check voltage between cargo lamp relay connector M165 terminal 2
and ground.
Is the inspection result normal?
YES
>> GO TO 12
NO
>> Repair harness or connectors.
12.
CHECK CARGO LAMP RELAY CONTROL CIRCUIT OPEN
1. Disconnect BCM connector M19 and cargo lamp relay.
2. Check continuity between BCM connector M19 terminal 50 and cargo lamp relay connector M165 termi-
nal 1.
Is the inspection result normal?
YES
>> Replace BCM. Refer to
BCS-49, "Removal and Installation"
NO
>> Repair harness or connectors.
13.
CHECK CARGO LAMP RELAY CONTROL CIRCUIT SHORT
1. Disconnect BCM connector M19 and cargo lamp relay.
2. Check continuity between BCM connector M19 terminal 50 and ground.
Is the inspection result normal?
YES
>> Replace BCM after making sure the cargo lamp power supply circuit is not shorted to voltage.
BCS-49, "Removal and Installation"
.
NO
>> Repair harness or connectors.
Component Inspection
INFOID:0000000009480144
CARGO LAMP SWITCH
1.
CHECK CARGO LAMP SWITCH
Cargo lamp relay
Ground
Voltage
Connector
Terminal
M165
5
Battery voltage
AWLIA0810ZZ
Cargo lamp relay
Ground
Voltage
Connector
Terminal
M165
2
Battery voltage
AWLIA0812ZZ
BCM
Cargo lamp relay
Continuity
Connector
Terminal
Connector
Terminal
M19
50
M165
1
Yes
Connector
Terminal
—
Continuity
M19
50
Ground
No
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