Nissan Pathfinder. Manual — part 608
EXL-120
< DTC/CIRCUIT DIAGNOSIS >
PARKING LAMP CIRCUIT
5. Check continuity between the rear combination lamp (side marker) harness connector and ground.
6. Check continuity between the license plate lamp harness connector and ground.
Are the inspection result normal?
YES
>> Inspect the parking, side marker or license plate lamp bulb.
NO
>> Repair or replace the harness or connector.
LH
B406
2
Ground
Yes
RH
B407
Rear combination lamp (side marker)
(
−)
Continuity
Connector
Terminal
LH
B412
7
Ground
Yes
RH
B413
License plate lamp
(
−)
Continuity
Connector
Terminal
LH
D561
2
Ground
Yes
RH
D562
TURN SIGNAL LAMP CIRCUIT
EXL-121
< DTC/CIRCUIT DIAGNOSIS >
C
D
E
F
G
H
I
J
K
M
A
B
EXL
N
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TURN SIGNAL LAMP CIRCUIT
Description
INFOID:0000000009175380
The BCM monitors inputs from the combination switch (lighting and turn signal switch) to determine when to
activate the turn signals. The BCM outputs voltage to the left and right turn signals during turn signal operation
or both during hazard warning operation. The BCM sends a turn signal indicator request to the combination
meter via the CAN communication lines.
The BCM performs the fast flasher operation (fail-safe) if any bulb or harness of the turn signal lamp circuit is
open.
NOTE:
Turn signal lamp blinks at normal speed when using the hazard warning lamp.
Component Function Check
INFOID:0000000009175381
1.
CHECK TURN SIGNAL LAMP
CONSULT
1. Select FLASHER of BCM (FLASHER) active test item.
2. While operating the test items, check that the turn signal lamp blinks.
Is the inspection result normal?
YES
>> Turn signal lamp circuit is normal.
NO
>> Refer to
EXL-121, "Diagnosis Procedure"
.
Diagnosis Procedure
INFOID:0000000009175382
Regarding Wiring Diagram information, refer to
.
1.
CHECK TURN SIGNAL LAMP BULB
Check the applicable lamp bulb to be sure the proper bulb standard is in use and the bulb is not open.
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Replace the bulb.
2.
CHECK TURN SIGNAL LAMP OUTPUT VOLTAGE
1. Turn the ignition switch OFF.
2. Disconnect the front or rear combination lamp harness connector in question.
3. Turn the ignition switch ON.
4. Operate the turn signal switch.
5. While the turn signal is operating, check the voltage between the front combination lamp harness connec-
tor and ground.
LH
: Turn signal lamps (LH) ON
RH
: Turn signal lamps (RH) ON
Off
: Turn signal lamps OFF
(+)
(
−)
Voltage
(Approx.)
Connector
Terminal
EXL-122
< DTC/CIRCUIT DIAGNOSIS >
TURN SIGNAL LAMP CIRCUIT
6. While the turn signal is operating, check the voltage between the rear combination lamp harness connec-
tor and ground.
Is the inspection result normal?
YES
>> GO TO 5.
NO
>> GO TO 3.
3.
CHECK TURN SIGNAL LAMP CIRCUIT FOR OPEN
1. Turn the ignition switch OFF.
2. Disconnect BCM harness connector M20 or M80.
3. Check continuity between the BCM harness connector M80 and the front combination lamp harness con-
nector.
4. Check continuity between the BCM harness connector M20 and the rear combination lamp harness con-
nector.
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> Repair or replace the harness or connector.
4.
CHECK TURN SIGNAL LAMP SHORT CIRCUIT
1. Check continuity between the BCM harness connector M80 and ground.
RH
E239
5
Ground
LH
E234
(+)
(
−)
Voltage
(Approx.)
Connector
Terminal
RH
B409
4
Ground
LH
B408
PKID0926E
PKID0926E
BCM
Front combination lamp
Continuity
Connector
Terminal
Connector
Terminal
LH
M80
117
E234
5
Yes
RH
105
E239
BCM
Rear combination lamp
Continuity
Connector
Terminal
Connector
Terminal
LH
M20
103
B408
4
Yes
RH
92
B409
TURN SIGNAL LAMP CIRCUIT
EXL-123
< DTC/CIRCUIT DIAGNOSIS >
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EXL
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2. Check continuity between the BCM harness connector M20 and ground.
Is the inspection result normal?
YES
>> Replace BCM. Refer to
BCS-80, "Removal and Installation"
NO
>> Repair or replace the harness or connector.
5.
CHECK TURN SIGNAL LAMP GROUND CIRCUIT
1. Turn the ignition switch OFF.
2. Check continuity between the front combination lamp harness connector and ground.
3. Check continuity between the rear combination lamp harness connector and ground.
Is the inspection result normal?
YES
>> Replace the malfunctioning lamp.
NO
>> Repair or replace the harness or connector.
BCM
Ground
Continuity
Connector
Terminal
LH
M80
117
No
RH
105
BCM
Ground
Continuity
Connector
Terminal
LH
M20
103
No
RH
92
Front combination lamp
(
−)
Continuity
Connector
Terminal
LH
E234
6
Ground
Yes
RH
E239
Rear combination lamp
(
−)
Continuity
Connector
Terminal
LH
B408
5
Ground
Yes
RH
B409
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