Nissan Xterra. Instruction — part 391
EXL-52
< DTC/CIRCUIT DIAGNOSIS >
OFF-ROAD LAMP COVER SENSOR CIRCUIT
Does continuity exist?
YES
>> Replace fuse block (J/B).
NO
>> Repair the harness.
Off-road lamp cover assem-
bly
Fuse block (J/B)
Continuity
Connector
Terminal
Connector
Terminal
LH
B527
1
M4
2P
Yes
RH
B529
1
OFF-ROAD LAMPS CIRCUIT
EXL-53
< DTC/CIRCUIT DIAGNOSIS >
C
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A
B
EXL
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OFF-ROAD LAMPS CIRCUIT
Description
INFOID:0000000009484904
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:0000000009484905
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 only, refer to
.
Diagnosis Procedure
INFOID:0000000009484906
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 LAMPS VOLTAGE
1. Turn the ignition switch OFF.
2. Disconnect the off-road lamps assembly connectors.
3. Remove the off-road lamps covers.
4. Turn the ignition switch ON.
5. Turn the high beam headlamps ON.
6. Turn the off-road lamps ON.
7. Check the voltage between the off-road lamp assembly connectors and ground.
Is the inspection result normal?
YES
>> GO TO 3
Fixed ON>>GO TO 9
Fixed OFF>>GO TO 4
3.
CHECK OFF-ROAD LAMPS GROUND CIRCUIT
Unit
Location
Fuse No.
Capacity
Off road lamps assembly
Fuse block (J/B)
9
15A
(+)
(
−)
Condition
Voltage
Connector
Terminal
LH
B528
4
Ground
Off-road lamps switch :ON
Battery voltage
RH
B530
4
Off-road lamps switch :OFF
0V
EXL-54
< DTC/CIRCUIT DIAGNOSIS >
OFF-ROAD LAMPS CIRCUIT
Check continuity between the off-road lamps assembly harness con-
nector and ground.
Is the inspection result normal?
YES
>> Inspect the off-road lamp bulb.
NO
>> Repair the harness.
4.
CHECK OFF-ROAD LAMPS RELAY
1. Turn the ignition switch OFF.
2. Disconnect the off-road lamps relay connector.
3. Check off-road lamps relay. Refer to
EXL-55, "Component Inspection"
.
Is the inspection result normal?
YES
>> GO TO 5
NO
>> Replace off-road lamps relay.
5.
CHECK OFF-ROAD LAMPS RELAY POWER SUPPLY
1. Turn the ignition switch ON.
2. Check the voltage between the off-road lamps relay harness
connector and ground.
Is the inspection result normal?
YES
>> GO TO 6
NO
>> GO TO 8
6.
CHECK OFF-ROAD LAMPS POWER SUPPLY CIRCUIT
1. Turn the ignition switch OFF.
2. Check continuity between the off-road lamps relay harness con-
nector (A) and off-road lamp assembly harness connectors (B).
Is inspection result normal?
YES
>> GO TO 7
NO
>> Repair harness or connector.
7.
CHECK OFF-ROAD LAMPS RELAY CONTROL CIRCUIT
1. Disconnect BCM connector M19.
Connector
Terminal
—
Continuity
LH
B528
5
Ground
Yes
RH
B530
5
AWLIA1708ZZ
(+)
(
−)
Voltage
Connector
Terminal
M81
2
Ground
Battery voltage
3
AWLIA1709ZZ
A
B
Continuity
Connector
Terminal
Connector
Terminal
M81
5
LH
B528
4
Yes
RH
B530
4
AWLIA1710ZZ
OFF-ROAD LAMPS CIRCUIT
EXL-55
< DTC/CIRCUIT DIAGNOSIS >
C
D
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A
B
EXL
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2. Check continuity between the off-road lamps relay harness con-
nector (A) and BCM harness connectors (B).
Is inspection result normal?
YES
>> Replace BCM. Refer to
BCS-50, "Removal and Installa-
.
NO
>> Inspect harness or connectors.
8.
CHECK OFF-ROAD LAMPS RELAY POWER SUPPLY CIRCUIT
1. Turn the ignition switch OFF.
2. Disconnect fuse block (J/B) connector M3.
3. Check continuity between the off-road lamps relay harness connector and fuse block (J/B) harness con-
nectors.
Does continuity exist?
YES
>> Replace fuse block (J/B).
NO
>> Repair the harness or connectors.
9.
CHECK OFF-ROAD LAMPS RELAY FOR SHORT CIRCUIT
1. Turn the ignition switch OFF.
2. Disconnect the off-road lamps relay connectors.
3. Check continuity between the off-road lamps relay harness connector and ground.
Does continuity exist?
YES
>> Repair the harness or connectors.
NO
>> Replace BCM. Refer to
BCS-50, "Removal and Installation"
Component Inspection
INFOID:0000000009484907
1.
CHECK OFF-ROAD LAMPS RELAY
Check off-road lamps relay.
Is the inspection result normal?
YES
>> Inspection End.
NO
>> Replace off-road lamps relay.
A
A
Continuity
Connector
Terminal
Connector
Terminal
M81
1
M19
50
Yes
AWLIA1711ZZ
Off-road lamps relay
Fuse block (J/B)
Continuity
Connector
Terminal
Connector
Terminal
M81
2
M3
2N
Yes
3
Connector
Terminal
—
Continuity
M81
1
Ground
No
Terminal
Condition
Continuity
Off-road lamps relay
3
5
12V direct current supply between termi-
nals 1 and 2.
Yes
No current supply
No
SEF497Y
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