2006 INFINITI M35 ignition

ACTIVE AFS
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HEADLAMP AUTO AIMING OPERATION
The height sensor detects a change in height of rear vehicle with ignition switch ON, and transmits signals to
the AFS control unit:
When ignition switch is turn to ON position, power is supplied
to height sensor terminal 1
through AFS control unit terminal 6.
When ignition switch is turned to ON position, height sensor input signal is supplied
to AFS control unit terminal 28
through height sensor terminal 2.
Ground is supplied
to height sensor terminal 3
through AFS control unit terminal 8.
Aiming motor driving signal (voltage signal that corresponds to the vehicle height) is transmitted depending on
the height sensor signal at the start of the engine
to front combination lamp LH terminal 12
through AFS control unit terminal 40,
to front combination lamp RH terminal 12
through AFS control unit terminal 19.
Output of aiming motor driving signal is maintained unless headlamp (HIGH/LOW) illuminate detected.
Auto aiming control operation starts when headlamps (HIGH/LOW) illuminate detected.
When headlamps (HIGH/LOW) illuminate, output of aiming motor driving signal is changed according to the
height sensor signal. After the change, it is changed according to height sensor signals with predetermined
timing based on driving condition while headlamps are ON.
Auto Aiming Operation
AFS control unit starts outputting aiming motor drive signal when the engine starts, and continues to output it
until the engine stops. Aiming motor drive signal changes output when the specified conditions described
below are met.
Headlamp aiming motors set the low beam projectors according to aiming motor drive signals received from
AFS control unit, both headlamp aiming motors cause the low beam projectors to move to the position com-
manded by the signal.
The aiming motor drive signal level retains when the following conditions are not met.
AFS control unit operation when the vehicle is stopped (low beam headlamps illuminated)
Headlamp aiming motor drive signal is changed when vehicle height is stabilized with a parked condition,
depending on the height sensor signal detected with height sensor signal by AFS control unit.
AFS control unit operation when the vehicle is running (low beam headlamps illuminated)
When vehicle is running, headlamp aiming motor drive signal is changed depending on the height sensor
signal which is detected when AFS control unit detects constant steady speed of vehicle.
When the vehicle is accelerating or decelerating, AFS control unit keeps headlamp aiming motor drive sig-
nal voltage level rather than changing it, so that the low beam projectors of both headlamps do not oper-
ate.
CAN COMMUNICATION SYSTEM DESCRIPTION
CAN (Controller Area Network) is a serial communication line for real time application. It is an on-vehicle mul-
tiplex communication line with high data communication speed and excellent error detection ability. Many elec-
tronic control units are equipped onto a vehicle, and each control unit shares information and links with other
control units during operation (not independent). In CAN communication, control units are connected with 2
communication lines (CAN H line, CAN L line) allowing a high rate of information transmission with less wiring.
Each control unit transmits/receives data but selectively reads required data only.
CAN COMMUNICATION UNIT
Refer to LAN-34, "CAN Communication Unit" .

ACTIVE AFS
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Terminals and Reference Values for AFS Control UnitNKS003QJ
Te r -
minal
No.Wire
colorItemMeasuring condition
Reference value
Ignition
switchOperation or condition
1 B/R IGN power supply ON — Battery voltage
2W/RSwivel position sensor ground
(right)ON — Approx. 0 V
3 GR AFS switch signal ON AFS switchON Approx. 0 V
OFF Battery voltage
4YSwivel position sensor power
supply (right)ON — Approx. 5 V
6 V/W Height sensor power supply ON — Approx. 5 V
7 P CAN-L — — —
8 B/R Height sensor ground ON — Approx. 0 V
9W/BSwivel position sensor signal
(right)ONLow beam headlamp
(right) swivel angle0
Approx. 1.5 V
Maximum
angleApprox. 2.5 V
11 R Swivel motor 1 phase
(right) ON
Low beam headlamp
(right) swivelONReference waveform
Approx. 8 - 12 V
13 B Swivel motor 2 phase
(right) ON OFF Approx. 9.5 - 11.5 V
15 BR/L Swivel motor 1 phase+ (left) ON
Low beam headlamp
(left) swivelONReference waveform
Approx. 8 - 12 V
17 Y/G Swivel motor 2 phase+ (left) ON OFF Approx. 9.5 - 11.5 V
19 V Aiming motor drive signal (right) ONLow beam headlamp
(right) auto aimingUnloaded
vehicle posi-
tionApprox. 9 V
Maximum
laden condi-
tion Approx. 4.8 V
(With 18- inch wheel)
Approx. 5.2 V
(With 19 -inch wheel)
24 V/RSwivel position sensor power
supply (left)ON — Approx. 5 V
25 B Ground ON — Approx. 0 V
27 R/WSwivel position sensor ground
(left)ON — Approx. 0 V
SKIB2408J
SKIB2408J

LT-150
ACTIVE AFS
Revision: 2006 January2006 M35/M45
28 BR Height sensor signal ON Vehicle heightUnloaded
vehicle posi-
tionApprox. 2.5 V
Maximum
laden condi-
tion Approx. 1.0 V
(With 18- inch wheel)
Approx. 1.3 V
(With 19- inch wheel)
29 L/YSwivel position sensor signal
(left)ONLow beam headlamp
(left) swivel angle0
Approx. 1.5 V
Maximum
angleApprox. 3.5 V
30 L CAN-H — — —
32 W Swivel motor 2 phase+ (right) ON
Low beam headlamp
(right) swivelONReference waveform
Approx. 8 - 12 V
34 G Swivel motor 1phase+ (right) ON OFF Approx. 9.5 - 11.5V
36 Y/L Swivel motor 2 phase
(left) ON
Low beam headlamp
(left) swivelONReference waveform
Approx. 8 - 12 V
38 W/L Swivel motor 1 phase
(left) ON OFF Approx. 9.5 - 11.5 V
40 O Aiming motor drive signal (left) ONLow beam headlamp
(left) auto aimingUnloaded
vehicle posi-
tionApprox. 9 V
Maximum
laden condi-
tion Approx. 4.8 V
(With 18 -inch wheel)
Approx. 5.2 V
(With 19 -inch wheel) Te r -
minal
No.Wire
colorItemMeasuring condition
Reference value
Ignition
switchOperation or condition
SKIB2408J
SKIB2408J

ACTIVE AFS
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How to Proceed with Trouble DiagnosisNKS003QK
1. Confirm the symptom or customer complaint.
2. Understand operation description and function description. Refer to LT-135, "
System Description" .
3. Perform the preliminary check. Refer to LT- 1 5 1 , "
Preliminary Check" .
4. Perform self-diagnosis by CONSULT-II. Refer to LT-154, "
SELF-DIAG RESULTS" .
5. Check symptom and repair or replace the cause of malfunction.
6. Does the swivel control operate normally? If YES: GO TO 7. If NO: GO TO 4.
7. INSPECTION END
Preliminary CheckNKS003QL
1. CHECK FUSE
Check for blown fuses.
Refer to LT-143, "Wiring Diagram — AFS —" .
OK or NG
OK >> GO TO 2.
NG >> If the fuse is brown be sure to eliminate cause of malfunction before installing new fuse. Refer to
PG-3, "
POWER SUPPLY ROUTING CIRCUIT" .
2. CHECK AFS CONTROL UNIT VOLTAGE
1. Turn ignition switch ON.
2. Check voltage between AFS control unit harness connector
F110 terminal 1 and ground.
OK or NG
OK >> GO TO 3.
NG >> Repair harness or connector.
3. CHECK GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Check continuity between AFS control unit harness connector
F110 terminal 25 and ground.
OK or NG
OK >> INSPECTION END
NG >> Repair harness or connector.
Unit Power source Fuse No.
AFS control unit Ignition switch ON or START 12
1 - Ground : Battery voltage
SKIB4776E
25 - Ground : Continuity should exist.
SKIB4775E

LT-152
ACTIVE AFS
Revision: 2006 January2006 M35/M45
CONSULT-II Function (ADAPTIVE LIGHT)NKS003QM
CONSULT-II can display each diagnostic item using diagnostic test modes shown following.
CONSULT-II BASIC OPERATION
CAUTION:
If CONSULT-II is used with no connection of CONSULT-II CONVERTER, malfunctions might be
detected in self-diagnosis depending on control unit which carry out CAN communication.
1. With the ignition switch OFF, connect “CONSULT-II” and “CON-
SULT-II CONVERTER” to the data link connector, and then turn
ignition switch ON.
2. Touch “START (NISSAN BASED VHCL)”.
3. Touch “ADAPTIVE LIGHT” on “SELECT SYSTEM” screen. If
“ADAPTIVE LIGHT” is not indicated, check power supply and
ground of AFS control unit. If it is normal, refer to GI-40, "
CON-
SULT-II Data Link Connector (DLC) Circuit" in “GI section”.
System part Check item, diagnosis mode Description
ADAPTIVE LIGHTWORK SUPPORTAdjusts steering angle sensor (Never use this function but on VDC side) and
adjusts levelizer.
SELF-DIAG RESULTS Displays self-diagnosis
DATA MONITOR Displays AFS control unit inputs and outputs in real time.
CAN DIAG SUPPORT MNTR The result of transmit/receive diagnosis of CAN communication can be read.
ACTIVE TESTAFS control unit sends a drive signal to electronic components to check their
operation.
ECU PART NUMBER AFS control unit part number can be read.
SKIB3794E
BCIA0029E
BCIA0030E

ACTIVE AFS
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4. Select the desired part to be diagnosed on the“ SELECT DIAG
MODE” screen.
WORK SUPPORT (STEERING ANGLE SENSOR ADJUSTMENT)
Work Support Item List
CAUTION:
Never use this function but on VDC side.
Notes on Steering Angle Sensor (Neutral Point) Adjustment
Be sure to adjust steering angle sensor neutral point before driving if any of the following has been
removed/installed or replaced: Steering angle sensor; Steering system part, Suspension system part.
On vehicle with VDC, perform steering angle sensor neutral point adjustment only on VDC side. Never
perform the adjustment on ADAPTIVE LIGHT side as this may lead to VDC malfunctions. If the adjust-
ment has been performed on AFS side, readjust on VDC side. For steering angle sensor neutral point
adjustment procedures on VDC side, refer to BRC-6, "
Adjustment of Steering Angle Sensor Neutral Posi-
tion" in “ON-VEHICLE SERVICE”.
When replaced steering angle sensor, AFS control unit detects “DTC B2515 ST ANG SEN SIG”. Delete
the malfunction history after adjust steering angle sensor on VDC side.
Steering angle sensor neutral point adjustment should be performed using CONSULT-II. (The adjustment
will not be possible without CONSULT-II.)
Operation Procedure
Refer to BRC-6, "Adjustment of Steering Angle Sensor Neutral Position" in BRC section.
WORK SUPPORT (LEVELIZER ADJUSTMENT)
Work Support Item List
Operation Procedure
1. Set the vehicle in unload condition. (Removal all loads in driver, passenger and trunk rooms.)
2. Touch “ADAPTIVE LIGHT” on “SELECT SYSTEM” screen.
3. Touch “WORK SUPPORT” on “SELECT DIAG MODE” screen.
4. Touch “LEVELIZER ADJUSTMENT”.
5. Touch “START”.
6. “ADJUSTMENT COMPLETE” will be displayed.
CAUTION:
When “CAN NOT BE TESTED” is displayed, AFS control unit stops levelizer adjustment as it
detected the change of height sensor signal. AFS control unit detects “DTC B2519 LEVELIZER
CALIB”.
Turn ignition switch OFF not to change the vehicle height. Then turn ignition switch ON and per-
form levelizer adjustment again.
When “ADJUSTMENT COMPLETE” is displayed, and “NO DTC IS DETECTED” is displayed on
self-diagnosis results, levelizer adjustment is completed.
When “ADJUSTMENT COMPLETE” is displayed, and “B2514 HI SEN UNUSUAL” is displayed on
self-diagnosis results, refer to LT-174, "
DTC B2514 HI SEN UNUSUAL RR" .
BCIA0031E
Item Description
ST ANGLE SENSOR ADJUSTMENT Adjust steering angle sensor neutral point (straight-ahead position).
Item Description
LEVELIZER ADJUSTMENT Adjust the height sensor signal value at unloaded vehicle position recognized by AFS control unit.

LT-154
ACTIVE AFS
Revision: 2006 January2006 M35/M45
7. Touch “END”.
8. Turn ignition switch OFF.
SELF-DIAG RESULTS
Operation Procedure
1. Touch “ADAPTIVE LIGHT” on “SELECT SYSTEM” screen.
2. Touch “SELF-DIAG RESULTS” on the “SELECT DIAG MODE” screen.
3. Check display content in self-diagnostic results.
CAUTION:
DTC B2503 and B2504 cannot be detected before the swivel operation. Thus, perform swivel operation
first, and then check the display 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
indication
detected by
CONSULT-
IIConditions of error detectionFail-safe
1. Swivel operation
2. Auto aiming operation
3. AFS OFF indicator operation
4. CancellationReference
CAN
COMM CIR-
CUIT
[U1000]Any of several items below have errors.
TRANSMIT DIAG
Reception from ECM
Reception from unified meter and A/C amp.
Reception from TCM
Reception from steering angle sensor
Reception from IPDM E/R1. Stop the swivel motor RH and
LH when the malfunction
occurred.
2. Stop the aiming motors when the
malfunction occurred.
3. Flash at intervals of approx. 1
second when keeping error state
for 2 seconds or longer.
4. Turn ignition switch OFF.LAN-9,
"TROUBLE
DIAGNOSES
WORK
FLOW" i n L A N
section.
CONTROL
UNIT (CAN)
[U1010]AFS control unit malfunctions.1. Stop the swivel motor RH and
LH when the malfunction
occurred.
2. Stop aiming motors when the
malfunction occurred.
3. Flash at intervals of approx. 1
second when keeping error state
for 2 seconds or longer.
4. Turn ignition switch OFF.Replace
AFS control
unit. LT- 1 9 1

ACTIVE AFS
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SWIVEL
ACTUATOR
[RH]
[B2503]Any of several statuses below
Large difference between swivel motor drive signal (swivel
angle command signal) transmitted by AFS control unit and
swivel position sensor signal (swivel angle feed back signal)
by swivel position sensor exists for 2 seconds or longer. Or
swivel position sensor signal does not change for 2 seconds
or longer even when AFS control unit transmit swivel motor
drive signal.
CAUTION:
Detects when swivel operating (excludes initialization).
Short or open circuit exists for 2 seconds or longer on one of
swivel motor circuits (AFS control unit terminals 11, 13, 32 or
34).
CAUTION:
Detects when swivel operating (excludes initialization).
Voltage of swivel position sensor power supply (AFS control
unit terminal 4) had more than 6 V or had less than 4 V for 2
seconds or longer.
Voltage of swivel position sensor signal (AFS control unit ter-
minal 9) had more than 4.75 V or had less than 0.25 V for 2
seconds or longer.1. Stop the swivel motor RH and
LH when the malfunction
occurred.
2. Reduce approx. 2 V of the aim-
ing motor drive signal value from
that of when error is detected.
3. Flash at intervals of approx. 1
second when keeping error state
for 2 seconds or longer.
4. Turn ignition switch OFF.LT-162, "
DTC
B2503
SWIVEL
ACTUATOR
RH"
SWIVEL
ACTUATOR
[LH]
[B2504]Any of several statuses below
Large difference between swivel motor drive signal (swivel
angle command signal) transmitted by AFS control unit and
swivel position sensor signal (swivel angle feed back signal)
by swivel position sensor exists for 2 seconds or longer. Or
swivel position sensor signal does not change for 2 seconds
or longer even when AFS control unit transmit swivel motor
drive signal.
CAUTION:
Detects when swivel operating (excludes initialization).
Short or open circuit exists for 2 seconds or longer on one of
swivel motor circuits (AFS control unit terminals 15, 17, 36 or
38).
CAUTION:
Detects when swivel operating (excludes initialization).
Voltage of swivel position sensor power supply (AFS control
unit terminal 24) had more than 6 V or had less than 4 V for 2
seconds or longer.
Voltage of swivel position sensor signal (AFS control unit ter-
minal 29) had more than 4.75 V or had less than 0.25 V for 2
seconds or longer.1. Stop the swivel motor RH and
LH when the malfunction
occurred.
2. Reduce approx. 2 V of the aim-
ing motor drive signal value from
that of when error is detected.
3. Flash at intervals of approx. 1
second when keeping error state
for 2 seconds or longer.
4. Turn ignition switch OFF.LT-168, "
DTC
B2504
SWIVEL
ACTUATOR
LH"
HI SEN
UNUSUAL
[RR]
[B2514]Any of several statuses belowVoltage of height sensor power supply (AFS control unit termi-
nal 6) had more than 6 V or had less than 4 V for 2 seconds or
longer.
Voltage of height sensor signal (AFS control unit terminal 28)
had more than 4.75 V or had less than 0.25 V for 2 seconds or
longer.1. Normal operation
2. Stop aiming motors when the
malfunction occurred.
3. Remains OFF.
4. Turn ignition switch OFF.LT-174, "
DTC
B2514 HI SEN
UNUSUAL
RR"
Details of
error
indication
detected by
CONSULT-
IIConditions of error detectionFail-safe
1. Swivel operation
2. Auto aiming operation
3. AFS OFF indicator operation
4. CancellationReference