Nissan Maxima. Manual — part 574
EXL-38
< DTC/CIRCUIT DIAGNOSIS >
[XENON TYPE]
HEADLAMP (HI) CIRCUIT
6.
CHECK DAYTIME LIGHT RELAY GROUND CIRCUIT
Check continuity between daytime light relay harness connector and ground.
Does continuity exist?
YES
>> GO TO 7.
NO
>> Repair the harness or connector.
7.
CHECK DAYTIME LIGHT RELAY 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 8.
8.
CHECK DAYTIME LIGHT RELAY CIRCUIT FOR OPEN
1. Disconnect IPDM E/R connector E18 and E201.
2. Check continuity between the IPDM E/R harness connector and the daytime light relay harness connec-
tor.
Does continuity exist?
YES
>> GO TO 9
NO
>> Repair the harnesses or connectors.
9.
CHECK DAYTIME LIGHT RELAY
Check daytime light relay. Refer to
EXL-38, "Component Inspection"
Is the inspection result normal?
YES
>> Replace IPDM E/R. Refer to
PCS-35, "Removal and Installation"
NO
>> Replace daytime light relay.
Component Inspection
INFOID:0000000010050218
1.
CHECK DAYTIME LIGHT RELAY
1. Turn ignition switch OFF.
2. Remove daytime light relay.
3. Check the continuity between daytime light relay terminals under the following conditions.
Daytime light relay
Ground
Continuity
Connector
Terminal
E228
4
Yes
Unit
Location
Fuse No.
Capacity
Daytime light relay
IPDM E/R
54
10A
IPDM E/R
Daytime light relay
Continuity
Connector
Terminal
Connector
Terminal
E18
6
E228
1
Yes
5
E201
105
2
Terminals
Condition
Continuity
3 and 5
12V direct current supply between terminals 1 and 2
Yes
No current supply
No
HEADLAMP (HI) CIRCUIT
EXL-39
< DTC/CIRCUIT DIAGNOSIS >
[XENON TYPE]
C
D
E
F
G
H
I
J
K
M
A
B
EXL
N
O
P
Is the inspection result normal?
YES
>> Inspection End.
NO
>> Replace daytime light relay
3 and 4
12V direct current supply between terminals 1 and 2
No
No current supply
Yes
Terminals
Condition
Continuity
EXL-40
< DTC/CIRCUIT DIAGNOSIS >
[XENON TYPE]
HEADLAMP (LO) CIRCUIT
HEADLAMP (LO) CIRCUIT
Description
INFOID:0000000010050219
The IPDM E/R (intelligent power distribution module engine room) controls the headlamp low relay based on
inputs from the BCM over the CAN communication lines. When the headlamp low relay is energized, power
flows through fuses 51 and 52, located in the IPDM E/R. Power then flows to the front combination lamps to
the headlamp low beam.
Component Function Check
INFOID:0000000010050220
1.
CHECK HEADLAMP (LO) OPERATION
WITHOUT CONSULT
1. Start IPDM E/R auto active test. Refer to
PCS-11, "Diagnosis Description"
2. Check that the headlamp is turned ON.
NOTE:
HI/LO is repeated 1 second each when using the IPDM E/R auto active test.
CONSULT
1. Select "EXTERNAL LAMPS" of IPDM E/R active test item.
2. While operating the test item, check that the headlamp is turned ON.
Is the headlamp turned ON?
YES
>> Headlamp (LO) is normal.
NO
>> Refer to
.
Diagnosis Procedure
INFOID:0000000010050221
Regarding Wiring Diagram information, refer to
1.
CHECK HEADLAMP (LO) FUSES
1. Turn the ignition switch OFF.
2. Check that the following fuses are not open.
Is the fuse open?
YES
>> Repair the harness and replace the fuse.
NO
>> GO TO 2.
2.
CHECK HEADLAMP (LO) OUTPUT VOLTAGE
CONSULT
1. Turn the ignition switch OFF.
2. Disconnect the front combination lamp connector.
3. Turn the ignition switch ON.
4. Select "EXTERNAL LAMPS" of IPDM E/R active test item.
LO
: Headlamp ON
OFF
: Headlamp OFF
Unit
Location
Fuse No.
Capacity
Headlamp LO (LH)
IPDM E/R
51
15A
Headlamp LO (RH)
IPDM E/R
52
15A
HEADLAMP (LO) CIRCUIT
EXL-41
< DTC/CIRCUIT DIAGNOSIS >
[XENON TYPE]
C
D
E
F
G
H
I
J
K
M
A
B
EXL
N
O
P
5. With EXTERNAL LAMPS ON, check the voltage between the
combination lamp connector and ground.
Is battery voltage present?
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 E200.
3. Check continuity between the IPDM E/R harness connector (A)
and the front combination lamp harness connector (B).
Does continuity exist?
YES
>> Replace the IPDM E/R. Refer to
NO
>> Repair the harnesses or connectors.
4.
CHECK FRONT COMBINATION LAMP (LO) GROUND CIRCUIT
Check continuity between the front combination lamp harness con-
nector terminal and ground.
Does continuity exist?
YES
>> Perform xenon headlamp diagnosis. Refer to
NO
>> Repair the harness.
(+)
(
−)
Voltage
Connector
Terminal
RH
E232
1
Ground
Battery voltage
LH
E231
1
AWLIA0568ZZ
A
B
Continuity
Connector
Terminal
Connector
Terminal
RH
E200
83
E232
1
Yes
LH
84
E231
1
AWLIA0569ZZ
Connector
Terminal
—
Continuity
RH
E232
2
Ground
Yes
LH
E231
2
AWLIA0570ZZ
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