Infiniti G37 Coupe. Manual — part 655
EXL-40
< FUNCTION DIAGNOSIS >
[XENON TYPE]
DIAGNOSIS SYSTEM (AFS)
DIAGNOSIS SYSTEM (AFS)
CONSULT-III Function (ADAPTIVE LIGHT)
INFOID:0000000001604618
APPLICATION ITEM
WORK SUPPORT
*: Adjusts the steering angle sensor neutral position on ABS actuator and electrical unit (control unit) side. Refer to
MENT OF STEERING ANGLE SENSOR NEUTRAL POSITION : Special Repair Requirement"
DATA MONITOR
*: The swivel angle "0
°
" (feedback value) of the swivel position sensor signal may differ from the swivel angle "0
°
" of the swivel motor
(AFS control unit command value). This causes that the swivel motor initializes the value based on the step number from the stopper.
ACTIVE TEST
CAUTION:
Start the engine when using “ACTIVE TEST”.
Diagnostic mode
Description
Ecu Identification
Allows confirmation of auto levelizer control unit part number.
Self Diagnostic Result
Displays the diagnosis results judged by AFS control unit.
Work support
Sets each sensor.
Data monitor
Indicates AFS control unit input data in real time.
Active test
Provides the drive signal to the load. Checks operation.
Service item
Description
ST ANG SEN ADJUSTMENT
*
—
LEVELIZER ADJUSTMENT
Adjusts the height sensor signal output value (AFS control unit recognized) in the un-
loaded vehicle condition.
Monitor item
[Unit]
Description
STR ANGLS SIG
[deg]
The steering angle value judged by the steering angle sensor signal received from
the steering angle sensor with CAN communication
VHCL SPD
[km/h]
The vehicle speed signal value from the unified meter and A/C amp. with CAN com-
munication
SLCT LVR POSI
[P - 1]
The selector lever status judged by the position indicator signal received from TCM
with CAN communication
HEAD LAMP
[On/Off]
The headlamp On/Off status judged by the low beam headlamp (ON) signal received
from IPDM E/R with CAN communication
AFS SW
[On/Off]
The switch status input from AFS switch
HI SEN OTP RR
[V]
The height sensor signal voltage value input from the height sensor
LEV ACTR VLTG
[%]
The ratio value to the battery voltage generated by the levelizer activation signal con-
trol value judged by AFS control unit
SWVL SEN RH
*
[deg]
The head lamp swivel angle value judged by AFS control unit received from the swiv-
el position sensor signal input from the swivel actuator
SWVL SEN LH
*
[deg]
SWVL ANGLE RH
*
[deg]
The swivel angle command value to the swivel motor judged by AFS control unit
SWVL ANGLE LH
*
[deg]
DIAGNOSIS SYSTEM (AFS)
EXL-41
< FUNCTION DIAGNOSIS >
[XENON TYPE]
C
D
E
F
G
H
I
J
K
M
A
B
EXL
N
O
P
NOTE:
“Fast” operation speed is as three times fast as “Slow”.
Test item
Operation Item
Description
LOW BEAM TEST RIGHT
Origin Fast
Swivels the right headlamp to the swivel angle 0
°
in the normal speed.
Peak Fast
Swivels the right headlamp to the swivel angle approximately 20
°
in the nor-
mal speed.
Origin Slow
Swivels the right headlamp to the swivel angle 0
°
in the speed at the initial-
ization.
Peak Slow
Swivels the right headlamp to the swivel angle approximately 20
°
in the
speed at the initialization.
LOW BEAM TEST LEFT
Origin Fast
Swivels the left headlamp to the swivel angle 0
°
in the normal speed.
Peak Fast
Swivels the left headlamp to the swivel angle approximately 20
°
in the nor-
mal speed.
Origin Slow
Swivels the left headlamp to the swivel angle 0
°
in the speed at the initializa-
tion.
Peak Slow
Swivels the left headlamp to the swivel angle approximately 20
°
in the speed
at the initialization.
LEVELIZER TEST
Origin
Changes the aiming motor drive signal to approximately 70% of the battery
voltage. Moves the headlamp upward and downward.
Peak
Changes the aiming motor drive signal to approximately 15% of the battery
voltage. Moves the headlamp upward and downward.
EXL-42
< COMPONENT DIAGNOSIS >
[XENON TYPE]
B2503, B2504 SWIVEL ACTUATOR
COMPONENT DIAGNOSIS
B2503, B2504 SWIVEL ACTUATOR
Description
INFOID:0000000001604619
SWIVEL ACTUATOR
The swivel actuator is installed in the headlamp unit. The swivel actuator consists of the swivel motor and the
swivel position sensor.
SWIVEL MOTOR
• The swivel motor is the two-phase step motor.
• The swivel motor drives headlamp by exciting the two drive coils according to the drive signal from AFS con-
trol unit.
• The rotation direction of the swivel motor is changeable by changing the exciting pattern.
SWIVEL POSITION SENSOR
The swivel position sensor detects the headlamp swivel angle to transmit the swivel position sensor signal to
AFS control unit.
DTC Logic
INFOID:0000000001604620
DTC DETECTION LOGIC
• [B2503] Swivel actuator [RH]
• [B2504] Swivel actuator [LH]
*: Initialization is not included.
DTC CONFIRMATION PROCEDURE
1.
DTC ERASE
Erase the DTC memory of AFS with CONSULT-III.
>> GO TO 2.
2.
CONFIRMATION DTC SELECTION
Select "B2503" or "B2504" for confirmation.
Which DTC is confirmation?
B2503 >> GO TO 3.
B2504 >> GO TO 4.
3.
DTC CONFIRMATION (B2503)
1.
Steer to the straight-forward position.
2.
Start the engine.
3.
Turn AFS OFF switch OFF.
4.
Turn the headlamp ON.
5.
Shift the selector lever to "N" (A/T models).
6.
Shift the shift knob to neutral (M/T models).
7.
Steer to the right. (Rotate it once or more.)
DTC detection condition
DTC erase
condition
Possible cause
AFS control unit indicates an applicable DTC when detecting any of the follow-
ing conditions continuously for 2 seconds or more.
• AFS control unit-recognized swivel position differs extremely from the swivel
position sensor-input value while the swivel operating.
*
• The swivel position sensor signal does not change even though AFS control
unit transmits the swivel motor driving signal while the swivel operating
*
.
• The swivel motor short and open is detected while the swivel operating
*
.
• The swivel position sensor power supply is 6 V or more, or 4 V or less.
• The swivel position sensor signal is 0.25 V or less, or 4.75 V or more.
Ignition switch
OFF
Swivel position sensor
• Swivel position sensor
• Harness and connector
• AFS control unit
Swivel motor
• Swivel motor
• Harness and connector
• AFS control unit
B2503, B2504 SWIVEL ACTUATOR
EXL-43
< COMPONENT DIAGNOSIS >
[XENON TYPE]
C
D
E
F
G
H
I
J
K
M
A
B
EXL
N
O
P
8.
Perform the self-diagnosis with CONSULT-III.
Is "B2503" detected?
YES
>> Refer to
.
NO
>> Refer to
GI-38, "Intermittent Incident"
.
4.
DTC CONFIRMATION (B2504)
1.
Steer to the straight-forward position.
2.
Start the engine.
3.
Turn AFS OFF switch OFF.
4.
Turn the headlamp ON.
5.
Drive at 25 km/h (15.5 MPH) or more.
6.
Steer to the left. (Rotate it once or more.)
7.
Stop the vehicle.
8.
Perform the self-diagnosis with CONSULT-III.
Is "B2504" detected?
YES
>> Refer to
.
NO
>> Refer to
GI-38, "Intermittent Incident"
.
Diagnosis Procedure
INFOID:0000000001604621
1.
CHECK SWIVEL POSITION SENSOR SIGNAL INPUT
1.
Turn the ignition switch ON.
2.
Check the voltage between the AFS control unit harness connector and the ground.
Is the measurement value within the standard value?
YES
>> GO TO 2.
Less than the standard value >>GO TO 6.
Higher than the standard value>>GO TO 9.
2.
CHECK SWIVEL MOTOR
Check the swivel motor.
EXL-46, "Component Inspection"
.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Replace the front combination lamp.
3.
CHECK SWIVEL MOTOR OPEN CIRCUIT
1.
Turn the ignition switch OFF.
2.
Disconnect AFS control unit connector and the headlamp swivel actuator connector.
3.
Check continuity between the AFS control unit harness connector and the headlamp swivel actuator har-
ness connector.
Terminals
Voltage
(Approx.)
(+)
(
−
)
AFS control unit
Ground
Connector
Terminal
RH
M16
9
0.25 - 4.75 V
LH
29
AFS control unit
Headlamp swivel
actuator
Continuity
Connector
Terminal
Connector
Terminal
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