Nissan Titan A60. Instruction — part 650
INTERIOR ROOM LAMP CONTROL CIRCUIT
INL-21
< DTC/CIRCUIT DIAGNOSIS >
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1. Turn ignition switch OFF.
2. On Crew Cab models with rear roof console, disconnect
BCM connector M20, door mirror connectors (with puddle
lamps) and personal lamp 2nd row connector.
3. Switch the front room/map lamp assembly switch to ON posi-
tion.
4. Check continuity between BCM connector M20 terminal 63 and
ground.
5. On models except Crew Cab with rear roof console, discon-
nect BCM connector M20, door mirror connectors (with puddle
lamps), room lamp connector (if equipped) or front room/map
lamp assembly connector (if equipped).
6. 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
BCS-53, "Removal and Installation"
. If NG, replace interior room lamp.
INL-72, "Removal and Installation"
.
NO
>> Repair the harness or connectors.
Connector
Terminal
—
Continuity
M20
63
Ground
No
ALLIA0413GB
Connector
Terminal
—
Continuity
M20
63
Ground
No
ALLIA0413GB
INL-22
< DTC/CIRCUIT DIAGNOSIS >
STEP LAMP CIRCUIT
STEP LAMP CIRCUIT
Description
INFOID:0000000006164467
Controls the front and rear step lamps and the foot lamps (ground side) to turn the lamps ON and OFF.
Component Function Check
INFOID:0000000006164468
CAUTION:
Before performing the diagnosis, check that the following is normal.
• Battery saver output/power supply
• Front step lamp bulbs
• Foot lamp bulbs (if equipped)
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 step lamps and foot lamps (if equipped) turn ON/OFF.
Is the inspection result normal?
YES
>> Step lamp circuit is normal.
NO
>> Refer to
.
Diagnosis Procedure
INFOID:0000000006164469
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 and ground.
Is the inspection result normal?
YES
>> Step lamp control 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
< DTC/CIRCUIT DIAGNOSIS >
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1. Turn ignition switch OFF.
2. Disconnect BCM connector M20 and front step lamp and foot
lamp connectors (if equipped).
3. Check continuity between BCM harness connector M20 terminal
62 and step lamp connectors (B) terminal 2 and foot lamp con-
nectors (C) terminal 2 (if equipped).
Is the inspection result normal?
YES
>> Check step lamp or foot lamp for an open. If OK,
Replace BCM. Refer to
BCS-53, "Removal and Installa-
. If NG, Replace step lamp or foot lamp. Refer to
INL-72, "Removal and Installation"
NO
>> Repair harness or connectors.
3.
CHECK STEP LAMP SHORT CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect BCM connector M20 and front step lamp and foot
lamp connectors (if equipped).
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-53, "Removal and Installa-
. If NG, replace step lamp or foot lamp. Refer to
INL-72, "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
Foot lamp LH (if
equipped)
M99 (C)
2
Foot lamp RH (if
equipped)
M100 (C)
2
ALLIA0415GB
Connector
Terminal
—
Continuity
M20
62
Ground
No
ALLIA0416GB
INL-24
< DTC/CIRCUIT DIAGNOSIS >
CARGO LAMP CONTROL CIRCUIT
CARGO LAMP CONTROL CIRCUIT
Description
INFOID:0000000006164470
The BCM controls ground to the cargo lamp relay to turn the cargo lamp and tailgate cargo lamps (if equipped)
ON and OFF.
Diagnosis Procedure
INFOID:0000000006752637
Regarding Wiring Diagram information, refer to
.
CAUTION:
Before performing the diagnosis, check that the following is normal.
• Fuse
• Cargo lamp bulbs
• Tailgate cargo lamp bulbs
1.
CHECK CARGO LAMP OPERATION
Check the cargo lamp and tailgate cargo lamps (if equipped) operation from the cargo lamp switch, the door
switches, and a keyfob (if equipped).
Is the cargo lamp and tailgate cargo lamps (if equipped) inoperative from all of the above switches and the
keyfob (if equipped)?
YES
>> GO TO 4
NO
>> • Inoperative from cargo lamp switch only, GO TO 2
• Inoperative from door switches only, refer to
DLK-27, "KING CAB : Description"
(king cab) or
DLK-28, "CREW CAB : Description"
(crew cab).
• Inoperative from keyfob only, refer to
2.
CHECK CARGO LAMP SWITCH
Check the cargo lamp switch. Refer to
INL-26, "Component Inspection"
Is the inspection result normal?
YES
>> GO TO 3
NO
>> Replace the cargo lamp switch.
3.
CHECK CARGO LAMP SWITCH CIRCUIT
1. Disconnect BCM connector M18 and cargo lamp switch connec-
tor.
2. Check continuity between BCM connector M18 (A) terminal 31
and cargo lamp switch connector M149 (B) terminal 1.
3. Check continuity between BCM connector M18 (A) terminal 31 and ground.
Is the inspection result normal?
YES
>> Replace BCM. Refer to
BCS-53, "Removal and Installation"
NO
>> Repair harness or connectors.
4.
CHECK CARGO LAMP RELAY
BCM
Cargo lamp switch
Continuity
Connector
Terminal
Connector
Terminal
M18 (A)
31
M149 (B)
1
Yes
AWLIA0807ZZ
Connector
Terminal
—
Continuity
M18 (A)
31
Ground
No
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