Infiniti QX56 (JA60). Manual — part 500
POWER SUPPLY AND GROUND CIRCUIT
EXL-29
< COMPONENT DIAGNOSIS >
C
D
E
F
G
H
I
J
K
M
A
B
EXL
N
O
P
2. Check continuity between IPDM E/R harness connectors and
ground.
Does continuity exist?
YES
>> Inspection End.
NO
>> Repair or replace harness.
IPDM E/R
Ground
Continuity
Connector
Terminal
E122 (A)
38
Yes
E124 (B)
59
AWMIA0024ZZ
EXL-30
< COMPONENT DIAGNOSIS >
HEADLAMP (HI) CIRCUIT
HEADLAMP (HI) CIRCUIT
Description
INFOID:0000000005370270
The IPDM E/R (intelligent power distribution module engine room) controls the headlamp LH high and head-
lamp RH high relays based on inputs from the BCM via the CAN communication lines. When the headlamp LH
high and headlamp RH high relays are energized, power flows through fuses 34 and 35, located in the IPDM
E/R. Power then flows to the front combination lamps to the headlamp high beam.
Component Function Check
INFOID:0000000005146640
1.
CHECK HEADLAMP (HI) OPERATION
WITHOUT CONSULT-III
1. Start IPDM E/R auto active test. Refer to
PCS-12, "Diagnosis Description"
2. Check that the headlamp switches to the high beam.
NOTE:
HI/LO is repeated 1 second each when using the IPDM E/R auto active test.
CONSULT-III
1. Select "EXTERNAL LAMPS" of IPDM E/R active test item.
2. With the test item operating, check that the headlamp switches to high beam.
Does the headlamp switch to high beam?
YES
>> Headlamp (HI) circuit is normal.
NO
>> Refer to
EXL-30, "Diagnosis Procedure - Without Daytime Light System"
Procedure - With Daytime Light System"
Diagnosis Procedure - Without Daytime Light System
INFOID:0000000005146641
Regarding Wiring Diagram information, refer to
1.
CHECK HEADLAMP (HI) 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 (HI) OUTPUT VOLTAGE
Hi
: Headlamp switches to the high beam.
Off
: Headlamp OFF
Unit
Location
Fuse No.
Capacity
Headlamp HI (LH)
IPDM E/R
35
10A
Headlamp HI (RH)
IPDM E/R
34
10A
HEADLAMP (HI) CIRCUIT
EXL-31
< COMPONENT DIAGNOSIS >
C
D
E
F
G
H
I
J
K
M
A
B
EXL
N
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P
1. Turn the ignition switch OFF.
2. Disconnect the front combination lamp connector E11 or E107.
3. Turn the ignition switch ON.
4. Turn the high beam headlamps ON.
5. With the high beam headlamps ON, check the voltage between
the combination lamp connector and ground.
Are the voltage readings as specified?
YES
>> GO TO 4.
NO
>> GO TO 3.
3.
CHECK HEADLAMP (HI) CIRCUIT FOR OPEN
1. Turn the ignition switch OFF.
2. Disconnect IPDM E/R connector E123.
3. Check continuity between the IPDM E/R harness connector (A)
and the front combination lamp harness connector (B).
Does continuity exist?
YES
>> GO TO 4.
NO
>> Repair the harnesses or connectors.
4.
CHECK FRONT COMBINATION LAMP (HI) GROUND CIRCUIT
Check continuity between the front combination lamp harness con-
nector terminal and ground.
Does continuity exist?
YES
>> Inspect the headlamp bulb.
NO
>> Repair the harness.
Diagnosis Procedure - With Daytime Light System
INFOID:0000000005146642
Regarding Wiring Diagram information, refer to
.
1.
CHECK HEADLAMP (HI) FUSES
1. Turn the ignition switch OFF.
2. Check that the following fuses are not open.
(+)
(
−)
Voltage
Connector
Terminal
LH
E11
6
Ground
Battery voltage
RH
E107
6
ALLIA0852ZZ
A
B
Continuity
Connector
Terminal
Connector
Terminal
LH
E123
55
E11
6
Yes
RH
56
E107
6
AWLIA1371ZZ
Connector
Terminal
—
Continuity
LH
E11
2
Ground
Yes
RH
E107
2
ALLIA0854ZZ
EXL-32
< COMPONENT DIAGNOSIS >
HEADLAMP (HI) CIRCUIT
Is the fuse open?
YES
>> Repair the harness and replace the fuse.
NO
>> GO TO 2.
2.
CHECK HEADLAMP (HI) OUTPUT VOLTAGE
1. Turn the ignition switch OFF.
2. Disconnect the front combination lamp connector E6 or E108.
3. Turn the ignition switch ON.
4. Turn the high beam headlamps ON.
5. With the high beam headlamps ON, check the voltage between
the combination lamp connector and ground.
Are the voltage readings as specified?
YES
>> GO TO 4.
NO
>> GO TO 3.
3.
CHECK HEADLAMP (HI) CIRCUIT FOR OPEN
1. Turn the ignition switch OFF.
2. Disconnect IPDM E/R connector E123.
3. Check continuity between the IPDM E/R harness connector (A)
and the front combination lamp harness connector (B).
Does continuity exist?
YES
>> GO TO 4.
NO
>> Repair the harnesses or connectors.
4.
CHECK FRONT COMBINATION LAMP (HI) GROUND CIRCUIT
Check continuity between the front combination lamp harness con-
nector terminal and ground.
Does continuity exist?
YES
>> Inspect the headlamp bulb.
NO - RH>>Repair the harness.
NO - LH >>Inspect daytime light relay. If OK, repair harness. If NG,
replace the daytime light relay.
Unit
Location
Fuse No.
Capacity
Headlamp HI (LH)
IPDM E/R
35
10A
Headlamp HI (RH)
IPDM E/R
34
10A
(+)
(
−)
Voltage
Connector
Terminal
LH
E6
6
Ground
Battery voltage
RH
E108
6
ALLIA0852ZZ
A
B
Continuity
Connector
Terminal
Connector
Terminal
LH
E123
55
E6
6
Yes
RH
56
E108
6
AWLIA1371ZZ
Connector
Terminal
—
Continuity
LH
E6
2
Ground
Yes
RH
E108
2
ALLIA0854ZZ
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