Nissan Sentra. Manual — part 472
HEADLAMP (LO) CIRCUIT
EXL-91
< DTC/CIRCUIT DIAGNOSIS >
C
D
E
F
G
H
I
J
K
M
A
B
EXL
N
O
P
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> GO TO 3.
3.
CHECK HEADLAMP (LO) CIRCUIT FOR OPEN
1. Turn the ignition switch OFF.
2. Disconnect IPDM E/R connector.
3. Check continuity between the IPDM E/R harness connector and the front combination lamp harness con-
nector.
Is the inspection result normal?
YES
>> Replace IPDM E/R. Refer to
PCS-30, "Removal and Installation"
(with Intelligent Key system) or
PCS-58, "Removal and Installation"
(without Intelligent Key system).
NO
>> Repair or replace the harness or connector.
4.
CHECK FRONT COMBINATION LAMP (LO) GROUND CIRCUIT
Check continuity between the front combination lamp harness connector and ground.
Is the inspection result normal?
YES
>> Inspect the headlamp bulb.
NO
>> Repair or replace the harness or connector.
RH
E20
1
Ground
Battery voltage
LH
E21
IPDM E/R
Front combination lamp
Continuity
Connector
Terminal
Connector
Terminal
RH
E43
8
E20
1
Yes
LH
7
E21
Connector
Terminal
—
Continuity
RH
E20
5
Ground
Yes
LH
E21
EXL-92
< DTC/CIRCUIT DIAGNOSIS >
DAYTIME LIGHT RELAY CIRCUIT
DAYTIME LIGHT RELAY CIRCUIT
Description
INFOID:0000000009757513
The BCM sends a daytime light request to the IPDM E/R via the CAN communication lines. The power flows
through fuse 29 located in fuse block J/B to the daytime light relay coil. When the IPDM E/R operates the day-
time light relay, power is sent to the daytime lamps.
Diagnosis Procedure
INFOID:0000000009757514
Regarding Wiring Diagram information, refer to
1.
CHECK DAYTIME LIGHT RELAY VOLTAGE SUPPLY
1. Turn the ignition switch OFF.
2. Remove the daytime light relay.
3. Check the voltage between the daytime light relay harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> GO TO 2.
2.
CHECK DAYTIME LIGHT RELAY FUSE
Check that the following fuses are not blown.
Is the fuse blown?
YES
>> Replace the blown fuse after repairing the affected circuit.
NO
>> Repair or replace the harness or connector.
3.
CHECK DAYTIME LIGHT RELAY CONTROL CIRCUIT
1. Check continuity between the IPDM E/R harness connector and the daytime light relay harness connec-
tor.
2. Check continuity between the daytime light relay harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> Repair or replace the harness or connector.
4.
CHECK DAYTIME LIGHT RELAY
Check the daytime light relay. Refer to
EXL-93, "Component Inspection"
Daytime light relay
(
−)
Voltage
Connector
Terminal
E30
2
Ground
Battery voltage
5
Unit
Location
Fuse No.
Capacity
Daytime light
Fuse block J/B
29
10A
Daytime light relay
IPDM E/R
Continuity
Connector
Terminal
Connector
Terminal
E30
1
E46
42
Yes
Connector
Terminal
—
Continuity
E30
1
Ground
No
DAYTIME LIGHT RELAY CIRCUIT
EXL-93
< DTC/CIRCUIT DIAGNOSIS >
C
D
E
F
G
H
I
J
K
M
A
B
EXL
N
O
P
Is the inspection result normal?
YES
>> GO TO 5.
NO
>> Replace relay.
5.
CHECK DAYTIME LIGHT CIRCUIT (OPEN OR SHORT TO GROUND)
1. Check continuity between the daytime light relay harness connector and the front combination lamp har-
ness connector.
2. Check continuity between the daytime light relay harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 6.
NO
>> Repair or replace the harness or connector.
6.
CHECK DAYTIME LIGHT GROUND CIRCUIT FOR OPEN
1. Disconnect front combination lamp connector in question.
2. Check continuity between the front combination lamp connector and ground.
Is the inspection result normal?
YES
>> Inspect daytime light bulb.
NO
>> Repair or replace the harness or connector.
Component Inspection
INFOID:0000000009757515
1.
CHECK DAYTIME LIGHT RELAY
1. Turn ignition switch OFF.
2. Remove daytime light relay.
3. Check the continuity between daytime light relay terminals 3 and 5 when voltage is supplied between ter-
minals 1 and 2.
Is the inspection result normal?
YES
>> Inspection End.
NO
>> Replace daytime light relay.
Daytime light relay
Front combination lamp
Continuity
Connector
Terminal
Connector
Terminals
E30
3
LH
E21
3, 8
Yes
RH
E20
Daytime light relay
(
−)
Continuity
Connector
Terminal
E30
3
Ground
No
Connector
Terminal
—
Continuity
LH E21
7
Ground
Yes
RH E20
Terminals
Condition
Continuity
3 and 5
12V direct current supply between terminals 1 and 2
Yes
No current supply
No
EXL-94
< DTC/CIRCUIT DIAGNOSIS >
FRONT FOG LAMP CIRCUIT
FRONT FOG LAMP CIRCUIT
Description
INFOID:0000000009757516
The IPDM E/R (intelligent power distribution module engine room) controls the front fog lamp relay based on
inputs from the BCM over the CAN communication lines. When the front fog lamp relay is energized, power
flows from the front fog lamp relay in the IPDM E/R to the front fog lamps.
Component Function Check
INFOID:0000000009757517
1.
CHECK FRONT FOG LAMP OPERATION
WITHOUT CONSULT
1. Activate IPDM E/R auto active test. Refer to
EXL-24, "Diagnosis Description"
(with Intelligent Key system)
EXL-28, "Diagnosis Description"
(without Intelligent Key system).
2. Check that the front fog lamp is turned ON.
WITH CONSULT
1. Select EXTERNAL LAMP of IPDM E/R active test item.
2. While operating the test items, check that the front fog lamp is turned ON.
Is the inspection result normal?
YES
>> Front fog lamp circuit is normal.
NO
>> Refer to
.
Diagnosis Procedure
INFOID:0000000009757518
Regarding Wiring Diagram information, refer to
1.
CHECK FRONT FOG LAMP FUSE
1. Turn the ignition switch OFF.
2. Check that the following fuse is not blown.
Is the fuse blown?
YES
>> Replace the fuse after repairing the affected circuit.
NO
>> GO TO 2.
2.
CHECK FRONT FOG LAMP OUTPUT VOLTAGE
CONSULT
1. Disconnect the front fog lamp harness connector in question.
2. Turn the ignition switch ON.
3. Turn the front fog lamps ON.
4. Check the voltage between the front fog lamp harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 4.
FOG
: Front fog lamp ON
OFF
: Front fog lamp OFF
Unit
Location
Fuse No.
Capacity
Front fog lamp
IPDM E/R
40
15A
(+)
(
−)
Voltage
Connector
Terminal
LH
E27
1
Ground
Battery voltage
RH
E28
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