Nissan Xterra. Instruction — part 390
EXL-48
< DTC/CIRCUIT DIAGNOSIS >
OFF-ROAD LAMPS SWITCH CIRCUIT
OFF-ROAD LAMPS SWITCH CIRCUIT
Description
INFOID:0000000009484898
The off-road lamps switch sends a momentary ground signal to the BCM requesting the off-road lamps be acti-
vated. The BCM controls the off-road lamps relay based on inputs from the combination switch (lighting and
turn signal switch), the off-road lamps switch and the off-road lamp cover sensors. If the headlamps are on
high beam, the off-road lamp covers are removed and the off-road lamps switch is activated, the BCM grounds
the off-road lamp relay. When the off-road lamps relay is energized, power flows from the off-road lamps relay
to the off-road lamps assembly.
Component Function Check
INFOID:0000000009484899
1.
CHECK OFF-ROAD LAMPS SWITCH OPERATION
Check that the indicator lamp on the off-road lamps switch illuminates from the off-road lamps switch, combi-
nation switch (lighting and turn signal switch) and off-road lamp cover sensor.
Is the inspection result normal?
YES
>> Off-road lamps switch function is OK.
NO
>> Inoperative from off-road lamps switch only, refer to
Diagnosis Procedure
INFOID:0000000009484900
Regarding Wiring Diagram information, refer to
.
1.
CHECK OFF-ROAD LAMPS SWITCH VOLTAGE
1. Turn the ignition switch OFF.
2. Disconnect the off-road lamps switch connector M80.
3. Turn the ignition switch ON.
4. Check the voltage between the off-road lamps switch connector
M80 terminal 1 and ground.
Is the inspection result normal?
YES
>> GO TO 3
NO
>> GO TO 2.
2.
CHECK OFF-ROAD LAMPS SWITCH SIGNAL CIRCUIT
1. Turn the ignition switch OFF.
2. Disconnect BCM connector M18.
3. Check continuity between the off-road lamps switch harness
connector (A) and BCM harness connector (B).
4. Check continuity between the off-road lamps switch harness
connector (A) and ground.
(+)
(
−)
Voltage
Connector
Terminal
M80
1
Ground
5V
AWLIA1701ZZ
A
B
Continuity
Connector
Terminal
Connector
Terminal
M80
1
M18
31
Yes
AWLIA1702ZZ
OFF-ROAD LAMPS SWITCH CIRCUIT
EXL-49
< DTC/CIRCUIT DIAGNOSIS >
C
D
E
F
G
H
I
J
K
M
A
B
EXL
N
O
P
Is inspection result normal?
YES
>> Replace BCM. Refer to
BCS-50, "Removal and Installation"
NO
>> Repair the harness.
3.
CHECK OFF-ROAD LAMPS SWITCH GROUND CIRCUIT
1. Turn the ignition switch OFF.
2. Check continuity between the off-road lamps switch harness
connector M80 terminals 2, 6 and ground.
Does continuity exist?
YES
>> GO TO 4
NO
>> Repair the harness or connector.
4.
CHECK OFF-ROAD LAMPS SWITCH INDICATOR CIRCUIT
1. Disconnect off-road lamps relay.
2. Check continuity between the off-road lamps relay harness connector and off-road lamps switch harness
connector.
Does continuity exist?
YES
>> Check off-road lamps circuit. If OK, Replace off-road lamps switch. If NG, refer to
.
NO
>> Repair and replace the harness.
A
—
Continuity
Connector
Terminal
M80
1
Ground
No
Connector
Terminal
—
Continuity
M80
2
Ground
Yes
6
AWLIA1703ZZ
Off-road lamps relay
Off-road lamps switch
Continuity
Connector
Terminal
Connector
Terminal
M81
5
M80
5
Yes
EXL-50
< DTC/CIRCUIT DIAGNOSIS >
OFF-ROAD LAMP COVER SENSOR CIRCUIT
OFF-ROAD LAMP COVER SENSOR CIRCUIT
Description
INFOID:0000000009484901
The off-road lamp cover sensors sense the presence of the off-road lamp covers. If the off-road lamp covers
are installed on the vehicle, the BCM will not activate the off-road lamps. The BCM controls the off-road lamps
relay based on inputs from the combination switch (lighting and turn signal switch), the off-road lamps switch
and the off-road lamp cover sensors. When the off-road lamps relay is energized, power flows from the off-
road lamps relay to the off-road lamps assembly.
Component Function Check
INFOID:0000000009484902
1.
CHECK OFF-ROAD LAMPS SWITCH OPERATION
Check that the indicator lamp on the off-road lamps switch illuminates from the off-road lamps switch, combi-
nation switch (lighting and turn signal switch) and off-road lamp cover sensor.
Is the inspection result normal?
YES
>> Off-road lamps switch function is OK.
NO
>> Inoperative from off-road lamp cover sensor only, refer to
.
Diagnosis Procedure
INFOID:0000000009484903
Regarding Wiring Diagram information, refer to
.
1.
CHECK OFF-ROAD LAMPS FUSE
1. Turn the ignition switch OFF.
2. Check that the following fuse is not open.
Is the fuse open?
YES
>> Replace the fuse after repairing the affected circuit.
NO
>> GO TO 2
2.
CHECK OFF-ROAD LAMP COVER SENSOR POWER SUPPLY
1. Disconnect the off-road lamp assembly connectors.
2. Turn the ignition switch ON.
3. Check the voltage between the off-road lamp assembly connec-
tors and ground.
Is battery voltage present?
YES
>> GO TO 3
NO
>> GO TO 6
3.
CHECK OFF-ROAD LAMP COVER SENSOR GROUND CIRCUIT
1. Turn the ignition switch OFF.
Unit
Location
Fuse No.
Capacity
Off-road lamp cover sensor
Fuse block (J/B)
12
10A
(+)
(
−)
Voltage
Connector
Terminal
LH
B527
1
Ground
Battery voltage
RH
B529
1
AWLIA1704ZZ
OFF-ROAD LAMP COVER SENSOR CIRCUIT
EXL-51
< DTC/CIRCUIT DIAGNOSIS >
C
D
E
F
G
H
I
J
K
M
A
B
EXL
N
O
P
2. Check continuity between the off-road lamp assembly harness
connectors and ground.
Does continuity exist?
YES
>> GO TO 4.
NO
>> Repair the harness.
4.
CHECK OFF-ROAD LAMP COVER SENSOR OUTPUT SIGNAL
1. Disconnect BCM connector M19 and connect the off-road lamp assembly.
2. Remove off-road lamp cover.
3. Turn the ignition switch ON.
4. Check voltage between off-road lamp cover sensor harness connector and ground.
Is inspection result normal?
YES
>> Replace BCM. Refer to
BCS-50, "Removal and Installation"
NO
>> GO TO 5
5.
CHECK OFF-ROAD LAMP COVER SENSOR SIGNAL CIRCUIT
1. Turn the ignition switch OFF.
2. Disconnect off-road lamp assembly.
3. Check continuity between the off-road lamp assembly harness
connectors (A) and BCM harness connector (B).
4. Check continuity between the off-road lamp assembly harness
connector and ground.
Is inspection result normal?
YES
>> Replace the off-road lamp cover sensor.
NO
>> Repair the harness.
6.
CHECK OFF-ROAD LAMP COVER SENSOR CIRCUIT FOR OPEN
1. Turn the ignition switch OFF.
2. Disconnect fuse block (J/B) connector M4.
3. Check continuity between the off-road lamp assembly harness connector and fuse block (J/B) harness
connector.
Connector
Terminal
—
Continuity
LH
B527
2
Ground
Yes
RH
B529
2
AWLIA1705ZZ
(+)
(-)
Voltage
Connector
Terminal
LH
B527
3
Ground
5V
RH
B529
3
A
B
Continuity
Connector
Terminal
Connector
Terminal
LH
B527
3
M19
42
Yes
RH
B529
3
A
—
Continuity
Connector
Terminal
LH
B527
3
Ground
No
RH
B529
3
AWLIA1706ZZ
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст