2007 INFINITI M35 check engine

LT-138
ACTIVE AFS
Revision: 2007 April2007 M35/M45

through front combination lamp RH terminal 21.
Swivel position sensor detects swivel angle during ignition switch ON, and transmits swivel position sensor
signals to the AFS control unit:
When ignition switch is turn to ON position, power is supplied

to front combination lamp RH terminal 15

through AFS control unit terminal 4.
When ignition switch is turn to ON position, swivel position sensor input signal is supplied

to AFS control unit terminal 9

through front combination lamp RH terminal 14.
Ground is supplied

to front combination lamp RH terminal 19

through AFS control unit terminal 2.
The low beam headlamp RH starts to swivel to the right.
The swivel motor driving signals are blocked and the swivel motion stops when the steering angle reaches
approximately more than 80 degrees (predetermined). The low beam headlamp will not swivel any further no
matter how further right. As the steering wheel is turned back to the left, the swivel motor driving signals (both
1-phase and 2-phase) will be reversed, causing low beam headlamp RH to start swiveling to the left. When
steering angle becomes smaller than predetermined value, the low beam headlamp is set in the straight-
ahead position, swivel motor driving signals are blocked and low beam headlamps stop swiveling.
AFS OFF INDICATOR OPERATION
In response to the state of control, AFS control unit switches com-
mands of AFS off indicator signal sent to unified meter and A/C amp.
via CAN communication; and then turns on/off or blinks AFS off indi-
cator lamp built in the combination meter depending on the following
condition.

Bulb check operation
AFS off indicator lamp is turned off after illuminating for one sec-
ond as a bulb check for AFS off indicator lamp when turn ignition
switch ON is detected.
NOTE:
AFS off indicator lamp is turned off without a lapse of one sec-
ond when start of the engine is detected.

AFS switch operation
AFS off indicator lamp is illuminated while AFS switch is OFF.
AFS off indicator lamp is turned off while AFS switch is ON.

System warning operation
AFS off indicator lamp illuminates at intervals of approximately one second when AFS control unit detects
any specific DTC (diagnosis trouble code), or when unified meter and A/C amp. cannot receive AFS off
indicator signals.
NOTE:
Unified meter and A/C amp. transmits a command to combination meter to blink AFS off indicator lamp
when they cannot receive AFS off indicator signal.
SWIVEL ACTUATOR INITIALIZATION
AFS control unit performs swivel operation to initialize swivel actuator when start of the engine is detected.
Straight-ahead position of low beam headlamps is adjusted by turning low beam headlamps to outside vehicle
with specified swivel angle after turning it to the center of vehicle and making sure that it reaches the stopper.
Swivel actuator initialization shall be performed every time when start of the engine is detected.
SKIB4765E

ACTIVE AFS
LT-159
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Revision: 2007 April2007 M35/M45
ACTIVE TEST
Operation Procedure
1. Start the engine. (Swivel actuator is initialized.)
2. Touch “ADAPTIVE LIGHT” on “SELECT SYSTEM” screen.
3. Touch “ACTIVE TEST” on “SELECT DIAG MODE” screen.
4. Touch “LOW BEAM TEST RIGHT”, “LOW BEAM TEST LEFT”, or “LEVELIZER TEST” on “SELECT TEST
ITEM” screen.
CAUTION:
Can be tested only when swivel actuator initialization is completed. If initialization is not com-
pleted, “RETRY COMMAND” is displayed and cannot be tested.

LOW BEAM TEST RIGHT
Low beam headlamp (right) can be operated to swivel angle
0° by touching “ORIGIN”, and to maximum angle by “PEAK”.

LOW BEAM TEST LEFT
Low beam headlamp (left) can be operated to swivel angle 0°
by touching “ORIGIN”, and to maximum angle by “PEAK”.

LEVELIZER TEST
Aiming motor drive signal can be changed to approx. 85%
(ratio to IGN power supply) by touching “ORIGIN”, and to
approx. 15% by “PEAK”. That angles headlamp LO up and
down.
5. During the operation check, touching “BACK” deactivates the operation.
Test Item Swivel Speed Mode
ORIGIN/PEAK - FAST Three times fast as SLOW Normal operation
ORIGIN/PEAK - SLOW — Initialization
SKIB4794E
Test Item Swivel Speed Mode
ORIGIN/PEAK - FAST Three times fast as SLOW Normal operation
ORIGIN/PEAK - SLOW — Initialization
SKIB4795E
Te s t I t e mAiming Motor Drive Signal
Light Axis
(Reference Value) Ratio to IGN
power supplyVo l ta g e
ORIGIN Approx. 85% Approx. 10.6 V 0°
PEAK Approx. 15% Approx. 1.9 VApprox. 2.5°
(Relatively lower than
that of origin)
SKIB4796E

LT-160
ACTIVE AFS
Revision: 2007 April2007 M35/M45
Symptom ChartNKS003QN
CAUTION:
The low beam headlamps performs small movements when AFS control unit detects the engine start.
This is normal with initialization of swivel actuator by AFS control unit.
SymptomAFS OFF
indicatorCausal system Reference

AFS operates, but cannot judge normal/
abnormal.
(AFS function test)NormalCheck swivel operation.LT- 1 8 2 , "AFS
Operation
Check (Func-
tion Test)"
Check steering angle sensor neutral point (straight-ahead
position).

Auto aiming operates, but cannot judge
normal/abnormal.
(Auto aiming function test)NormalCheck auto aiming operation.LT- 1 8 4 , "Auto
Aiming Opera-
tion Check
(Function
Test)"
Check height sensor signal value recognized by AFS con-
trol unit at unloaded vehicle position.
Check height sensor signal and aiming motor drive signal.

Neither AFS operates nor auto aiming
operates.BlinkingCheck AFS control unit self-diagnostic results. LT- 1 5 3 ,
"SELF-DIAG
RESULTS"
Check AFS control unit power supply and ground circuit.
NOTE:
Check only when “ADAPTIVE LIGHT” is not displayed on
CONSULT-II “SELECT SYSTEM” screen.LT- 1 5 1 , "Pre-
liminary
Check"

AFS does not operate.
(Auto aiming operation is normal.)Blinking Check AFS control unit self-diagnostic results. LT- 1 5 3 ,
"SELF-DIAG
RESULTS"
Illuminated Check AFS switch system circuit.LT- 1 8 6 , "
AFS
Switch Does
Not Operate"

Auto aiming does not operate.
(AFS operation is normal.)NormalCheck AFS control unit self-diagnostic results. LT- 1 5 3 ,
"SELF-DIAG
RESULTS"
Check aiming motor system circuit.LT- 1 8 8 , "
Auto
Aiming Does
Not Operate
(Check Aiming
Motor System
Circuit)"

Auto aiming operates in the reverse way.
(Lowering vehicle height angles light
axis up.)Normal Replace AFS control unit.LT- 1 9 2 , "Removal and
Installation of
AFS Control
Unit"

AFS OFF indicator does not illuminate.
(AFS operation and auto aiming opera-
tion are normal.)Not
illuminatedCheck circuit between unified meter and A/C amp. and
combination meter.LT- 1 9 1 , "
AFS
OFF Indicator
Does Not
Operate"
AFS OFF indicator blinks.
(AFS operation and auto aiming opera-
tion are normal.)BlinkingCheck receive state of AFS off indicator signal from uni-
fied meter and A/C amp.

AFS cannot be cancelled.
(AFS switch does not operate.)Normal Check AFS switch system circuit.LT- 1 8 6 , "AFS
Switch Does
Not Operate"

LT-182
ACTIVE AFS
Revision: 2007 April2007 M35/M45
AFS Operation Check (Function Test)NKS003QS
1. CHECK SWIVEL ACTUATOR
1. Start engine and turn lighting switch to 2ND position.
2. Select “ADAPTIVE LIGHT” on CONSULT-II. Select “ACTIVE
TEST” on “SELECT DIAG MODE” screen.
3. Select “LOW BEAM TEST RIGHT” or “LOW BEAM TEST LEFT”
on “SELECT TEST ITEM” screen.
4. Touch “ORIGIN–FAST/SLOW” and “PEAK–FAST/SLOW”
screen.
5. Make sure of swivel operation.
OK or NG
OK >> GO TO 2.
NG >>

When interference or poor fitment is found, perform aiming adjustment. Refer to LT- 7 2 , "Aiming
Adjustment" . If it is normal, replace headlamp. Refer to LT- 1 9 1 , "Removal and Installation of
Front Combination Lamp" .

When the operation range is irregular, perform aiming adjustment. Refer to LT- 7 2 , "Aiming
Adjustment" . If it is normal, GO TO 3.
2. CHECK STEERING ANGLE SENSOR
Check “STR ANGLE SIG” in “Data Monitor” when driving straight
and steering turn 90° to right or left.
OK or NG
OK >> GO TO 3.
NG >>

When steering is out of range while driving straight, perform steering angle sensor adjustment.
Refer to BRC-6, "
Adjustment of Steering Angle Sensor Neutral Position" in “ON-VEHICLE
SERVICE”.

When the function is normal while driving straight but the displayed value is different from
actual steering position with turning to right or left, replace steering angle sensor. Refer to LT-
191, "Removal and Installation of Steering Angle Sensor" .
SKIB4794E
TEST ITEM ORIGIN PEAKLight axis range at 10 m (394.7 in) off
(Reference value)
LOW BEAM TEST RIGHT Swivel angle 0°Swivel angle 7° to 13°Approx. 1.200 to 2.300 mm (48 to 90 in)
LOW BEAM TEST LEFT Swivel angle 0°Swivel angle 17° to 23°Approx. 3.000 to 4.200 mm (120 to 167 in)
Steering conditionSTR ANGLE SIG
(Data monitor)
Driving straight− 5.0 ° to + 5.0°
Turn 90° to right Approx. + 90°
Turn 90° to left Approx. − 90°
SKIB4793E

LT-184
ACTIVE AFS
Revision: 2007 April2007 M35/M45
Auto Aiming Operation Check (Function Test)NKS003QT
1. CHECK AIMING MOTOR
1. Start engine and turn lighting switch to 2ND position.
2. Select “ADAPTIVE LIGHT” on CONSULT-II. Select “ACTIVE
TEST” on “SELECT DIAG MODE” screen.
3. Select “LEVELIZER TEST” on “SELECT TEST ITEM” screen.
4. Touch “ORIGIN” and “PEAK” screen.
5. Make sure of auto aiming operation.
OK or NG
OK >> GO TO 2.
NG >>

When interference or poor fitment is found, perform aiming adjustment. Refer to LT- 7 2 , "Aiming
Adjustment" . If it is normal, replace headlamp. Refer to LT- 1 9 1 , "Removal and Installation of
Front Combination Lamp" .

When the operation range is irregular, perform aiming adjustment. Refer to LT- 7 2 , "Aiming
Adjustment" . If it is normal, GO TO 4.
2. PERFORM STATE LEVELIZER ADJUSTMENT 1
Check “LEV ACTR VLTG” in “Data Monitor” with unloaded vehicle
position. (Remove all loads in driver, passenger and trunk rooms.)
OK or NG
OK >> GO TO 3.
NG >> Perform LEVELIZER ADJUSTMENT. Refer to LT- 1 5 2 ,
"WORK SUPPORT (LEVELIZER ADJUSTMENT)" .
3. PERFORM STATE LEVELIZER ADJUSTMENT 2
Check if “LEV ACTR VLTG” changes approx. 3 seconds after lower-
ing vehicle height as low as approx. −0.5V from the value of “HI SEN
OTP RR” in “Data Monitor” at unloaded vehicle position. (Remove all
loads in driver, passenger and trunk rooms.)
OK or NG
OK >> GO TO 4.
NG >> Perform LEVELIZER ADJUSTMENT. Refer to LT- 1 5 2 ,
"WORK SUPPORT (LEVELIZER ADJUSTMENT)" .
SKIB4796E
TEST ITEM ORIGIN PEAK (Reference value)Light axis range at 10 m (394.7 in) off
(Reference value)
LEVELIZER TEST Light axis angle 0°Light axis angle approx. 2.5°Approx. 450 mm (17.7 in)
TEST ITEM Unloaded vehicle position
LEV ACTR VLTG Approx. 70%
SKIB4793E
SKIB4793E

LT-188
ACTIVE AFS
Revision: 2007 April2007 M35/M45
Auto Aiming Does Not Operate (Check Aiming Motor System Circuit)NKS003QV
1. CHECK AIMING MOTOR
1. Start engine and turn lighting switch to 2ND position.
2. Select “ADAPTIVE LIGHT” on CONSULT-II. Select “ACTIVE
TEST” on “SELECT DIAG MODE” screen.
3. Select “LEVELIZER TEST” on “SELECT TEST ITEM” screen.
4. Touch “ORIGIN” or “PEAK” screen.
5. Make sure of aiming motor operation.
OK or NG
OK >> Replace AFS control unit. Refer to LT- 1 9 2 , "Removal
and Installation of AFS Control Unit" .
NG >> GO TO 2.
2. CHECK AIMING MOTOR DRIVE SIGNAL
1. Touch “ORIGIN” or “PEAK” screen in “LEVELIZER TEST”.
2. Check voltage between AFS control unit harness connector and
ground.
OK or NG
OK >> GO TO 3.
NG >> GO TO 6.
3. CHECK AIMING MOTOR DRIVE SIGNAL CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect front combination lamp RH and LH connector.
3. Start engine.
4. Touch “ORIGIN” or “PEAK” screen in “LEVELIZER TEST”.
5. Check voltage between front combination lamp (LH and RH)
harness connector and ground.
OK or NG
OK >> GO TO 4.
NG >> Repair harness or connector.
SKIB4796E
(+)
(-) ConditionVoltage
(Approx.) AFS control unit
connectorTerminal
RH
F11019
GroundORIGIN 10.6 V
PEAK 1.9 V
LH 40ORIGIN 10.6 V
PEAK 1.9 V
PKIC0687E
(+)
(-) ConditionVoltage
(Approx.) Front combination
lamp connectorTerminal
RH E70 12
GroundORIGIN 10.6 V
PEAK 1.9 V
LH E71 12ORIGIN 10.6 V
PEAK 1.9 V
PKIC0688E

ACTIVE AFS
LT-189
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Revision: 2007 April2007 M35/M45
4. CHECK AIMING MOTOR POWER SUPPLY
1. Turn ignition switch OFF.
2. Turn ignition switch ON.
3. Check voltage between front combination lamp (RH and LH)
harness connector and ground.
OK or NG
OK >> GO TO 5.
NG >> Repair harness or connector.
5. CHECK AIMING MOTOR GROUND
1. Turn ignition switch OFF.
2. Check continuity between front combination lamp (RH and LH)
harness connector and ground.
OK or NG
OK >> Replace front combination lamp RH and LH (aiming
motor malfunction). Refer to LT- 1 9 1 , "
Removal and
Installation of Front Combination Lamp" .
NG >> Repair harness or connector.
6. CHECK AIMING MOTOR DRIVE SIGNAL CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect front combination lamp RH and LH connector.
3. Start engine.
4. Touch “ORIGIN” or “PEAK” screen in “LEVELIZER TEST”.
5. Check voltage between AFS control unit harness connector and
ground.
OK or NG
OK >> Replace front combination lamp RH and LH (aiming motor malfunction). Refer to LT- 1 9 1 ,
"Removal and Installation of Front Combination Lamp" .
NG >> GO TO 7.
(+)
(-)Voltage
(Approx.) Front combination
lamp connectorTerminal
RH E70 13
Ground Battery voltage
LH E71 13
PKIC0689E
Front combination
lamp connectorTerminal
GroundContinuity
RH E70 11
Ye s
LH E71 11
PKIC0690E
(+)
(-) ConditionVoltage
(Approx.) AFS control unit
connectorTerminal
RH
F11019
GroundORIGIN 10.6 V
PEAK 1.9 V
LH 40ORIGIN 10.6 V
PEAK 1.9 V
SKIB4960E

INTERIOR ROOM LAMP
LT-283
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Revision: 2007 April2007 M35/M45
CONSULT-II Functions (BCM)NKS003T7
CONSULT-II can display each diagnostic item using the diagnostic test modes shown following.
CONSULT-II BASIC OPERATION
Refer to GI-38, "CONSULT-II Start Procedure" .
WORK SUPPORT (INT LAMP)
Operation Procedure
1. Touch “INT LAMP” on “SELECT TEST ITEM” screen.
2. Touch “WORK SUPPORT” on “SELECT DIAG MODE” screen.
3. Touch “SET I/L D− UNLCK INTCON” on “SELECT WORK ITEM” screen.
4. Touch “START”.
5. Touch “CHANGE SETT”.
6. The setting will be changed and “CUSTOMIZING COMPLETED ” will be displayed.
7. Touch “END”.
Display Item List
NOTE:
Factory settingBCM diagnosis part Diagnosis mode Description
INTERIOR LAMPWORK SUPPORT Changes the setting for each function.
DATA MONITOR Displays BCM input data in real time.
ACTIVE TEST Operation of electrical loads can be checked by sending driving signal to them.
BATTERY SAVERWORK SUPPORT Changes the setting for each function.
DATA MONITOR Displays BCM input data in real time.
ACTIVE TEST Operation of electrical loads can be checked by sending driving signal to them.
BCMSELF-DIAG RESULTS BCM performs self-diagnosis of CAN communication.
CAN DIAG SUPPORT MNTR The result of transmit/receive diagnosis of CAN communication can be read.
Item Description CONSULT-II
ROOM LAMP TIMER SETThe lighting time can be selected when the interior room lamps are unlocked by
Intelligent Key or any door request switch.

Mode 1 (0 sec.)/Mode 2 (7.5 sec.)/Mode 3NOTE (15 sec.)/Mode 4 (30 sec.)MODE 1 – 4
SET I/L D−UNLCK INTCONRoom lamp timer operation can be selected.

ONNOTE (Room lamp timer operates)/OFF (Room lamp timer does not oper-
ates)ON/OFF
ROOM LAMP ON TIME SETThe time to escalate illumination can be selected when the interior room lamp is
turned on.

Mode 1 (0.5 sec.)/Mode 2NOTE (1 sec.)/Mode 3 (2 sec.)/Mode 4 (3 sec.)/
Mode 5 (4 sec.)/Mode 6 (5 sec.)/Mode 7 (0 sec.)MODE 1 – 7
ROOM LAMP OFF TIME SETThe time to diminish illumination can be selected when the interior room lamp is
turned off.

Mode 1 (0.5 sec.)/Mode 2 (1 sec.)/Mode 3 (2 sec.)/Mode 4NOTE (3 sec.)/
Mode 5 (4 sec.)/Mode 6 (5 sec.)/Mode 7 (0 sec.)MODE 1 – 7
R LAMP TIMER LOGIC SETThe lighting condition of room lamp timer can be selected when the door is
opened/closed.

Mode 1NOTE (Connected with all doors)/Mode 2 (Connected with driver door
only)MODE 1 – 2
ROOM LAMP ON AT LOCKThe connected operation with room lamp timer can be selected when engine
switch (push switch) is turned OFF.

ON NOTE (Connected with room lamp timer operation) /OFF (Disconnected with
room lamp operation)ON/OFF