Infiniti Q45. Manual — part 682

HEADLAMP AIMING CONTROL (AUTO)

LT-65

SELF-DIAG RESULTS
Operation Procedure

Touch “SELF-DIAG RESULTS” on “SELECT DIAG MODE” screen.

Check display content in self-diagnostic results.

Description of DTC and Solutions after Detection

CONSULT-II can detect DTC (Diagnosis trouble code). The descriptions and solutions of DTC are listed
below.

Details of error indica-

tion detected by

CONSULT-II

Conditions of error detection

Code

storage

Fail-safe

Reference

Within 5 seconds

after starting vehi-

cle, or vehicle

speed less than or

equal to 4 km/h

(2.84 MPH).

5 seconds and more

after starting vehicle,

or vehicle speed

more than or equal

to 4 km/h (2.84

MPH).

[B2080]
[ECU TROUBLE]

ECU error of the headlamp
aiming sensor.

YES

●

Fix headlamp aiming motor drive signal
around 0 V.

●

Maintain a current position of light axis.

Replace headlamp
aiming sensor, and
initialize it. Refer to

LT-76, "Removal and
Installation"

[B2081]
[INITIAL NOT DONE]

Initialization has not com-
pleted.

Set and maintain light axis downward.

Refer to

LT-72, "DTC

B2081 [INITIAL NOT
DONE]"

[B2082]
[SENSOR OUT OF
RANGE]

Vehicle height detected by
headlamp aiming sensor is
unusual.

Refer to

LT-72, "DTC

B2082 [SENSOR
OUT OF RANGE],
DTC B2083 [SEN SIG
NOT PLAUSIBLE]"

[B2083]
[SEN SIG NOT
PLAUSIBLE]

Vehicle height detected by
headlamp aiming sensor
while running does not
change more than 60-second
stretch.

YES

Maintain a current position of light axis.

Refer to

LT-72, "DTC

B2082 [SENSOR
OUT OF RANGE],
DTC B2083 [SEN SIG
NOT PLAUSIBLE]"

[B2084]
[VOLTAGE UNDER
LIMIT]

Voltage of headlamp aiming
sensor terminal 2 kept having
less than or equal to 9 V for
1.5 seconds and over.

Set and maintain
light axis down-
ward.

Maintain a current

position of light axis.

Refer to

LT-72, "DTC

B2084 [VOLTAGE
UNDER LIMIT]"

[B2085]
[LOW BEAM SIG
OPEN LINE]

Headlamp aiming sensor ter-
minal 6 had less than 6 V at
lighting switch 1st, or had
more than 2V for 1.5 sec-
onds or more at lighting
switch OFF.

Refer to

LT-73, "DTC

B2085 [LOW BEAM
SIG OPEN LINE]"

[B2086]
[FRQ. OVER LIMIT]

Vehicle speed signal kept
showing over 255 km/h (158
MPH) for more than 1.5 sec-
onds.

Refer to

LT-73, "DTC

B2086 [FRQ. OVER
LIMIT]"

[B2087]
[SHORT TO
GROUND]

Headlamp aiming sensor ter-
minal 7 had short-circuit with
a ground more than 1.5 sec-
onds.

Maintain a current position of light axis.

Refer to

LT-74, "DTC

B2087 [SHORT TO
GROUND]"

[B2088]
[SHORT TO BAT-
TERY]

Headlamp aiming sensor ter-
minal 7 had short-circuit with
a power supply line more
than 1.5 seconds.

Refer to

LT-75, "DTC

B2088 [SHORT TO
BATTERY]"

[B2089]
[NO CAR TYPE
SELECTED]

Program error of the head-
lamp aiming sensor.

●

Fix headlamp aiming motor drive signal
around 0 V.

●

Maintain a current position of light axis.

Replace headlamp
aiming sensor, and
initialize it. Refer to

LT-76, "Removal and
Installation"

LT-66

HEADLAMP AIMING CONTROL (AUTO)

CAUTION:

●

As for [B2083], codes are erased after detecting a change of vehicle height.

●

As for [B2084] to [B2086], fail-safe is performed in accordance with running condition when code is detected, and main-
tains the condition until ignition switch is turned off.
When ignition switch is turned on, fail-safe is set to “within 5 seconds after starting vehicle” or “vehicle speed less than
or equal to 4 km/h (2.84 MPH)”. Perform fail-safe only when having a current abnormality.

●

As for [B2084] to [B2088], perform fail-safe only when having a current abnormality.

HEADLAMP AIMING CONTROL (AUTO)

LT-67

Check Aiming Control System

NKS0018B

Refer to

FSU-5, "FRONT SUSPEN-

SION ASSEMBLY"

in “FSU section”

and

RSU-5, "REAR SUSPENSION

ASSEMBLY"

in“ RSU section”.

Refer to

LT-76, "Removal and Instal-

lation"

Refer to

LT-65, "SELF-DIAG

RESULTS"

Refer to

LT-65, "Description of DTC

and Solutions after Detection"

Refer to

LT-64, "ACTIVE TEST"

Refer to

LT-33, "Removal and Instal-

lation"

in “HEADLAMP (FOR USA)”.

PKIB1108E

LT-68

HEADLAMP AIMING CONTROL (AUTO)

CAUTION:

If the vehicle height is outside the proper height, aiming control may not be performed normally even
when the headlamp aiming control system is normal.

Symptom Chart

NKS0018C

Refer to

LT-63, "CONSULT-II Func-

tion (HEAD LAMP LEVELIZER)"

Refer to

LT-55, "Headlamp Aiming

Sensor Control Operation"

Refer to

DI-15, "Terminals and Ref-

erence Value for Combination
Meter"

in “DI section”.