Infiniti QX56 (Z62). Manual - part 681

 

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Infiniti QX56 (Z62). Manual - part 681

 

 

EXL-16

< SYSTEM DESCRIPTION >

[XENON TYPE]

SYSTEM

- Swivels the headlamp to the vehicle-center side until it hits the stopper.
- Returns the swivel angle from the stopper. Completes the initialization with regarding the returned position

as the swivel angle 0

°

 (straight-forward position). 

Swivel Operation

• AFS control unit transmits the drive signal to the swivel actuator when activation conditions are satisfied.

And swivels the headlamp.

- The swivel starts after steering approximately 20

°

 or more from straight-forward position.

NOTE:
The steering angle differs between right turn and left turn.

- The swivel angle becomes the maximum angle toward the driving direction if the steering angle is approxi-

mately 90

°

 or more depending on the vehicle speed. The swivel angle is maintained by shutting off the drive

signal.

- The swivel starts, and returns to the swivel angle 0

°

 (straight-forward position) when the steering is returned

to the straight-forward position.

• AFS control unit returns the swivel angle to the straight-forward position, and stops the swivel regardless of

the steering angle if the operation condition is not satisfied while the swivel angle is 0

°

.

AFS OFF Indicator Lamp

• AFS control unit transmits AFS OFF indicator lamp signal to the combination meter via CAN communication.
• Combination meter turns AFS OFF indicator lamp ON/OFF/blinking according to AFS OFF indicator lamp

signal. 

- AFS OFF indicator lamp is turned ON for 1 second for the AFS OFF indicator lamp bulb check when the igni-

tion switch is turned ON. AFS OFF indicator lamp is turned OFF within 1 second when the engine starts. 

- AFS OFF indicator lamp turns ON when AFS is switched to “OFF” by operating AFS switch. 
- AFS OFF indicator lamp blinks (1 second each) if AFS control unit detects a specific DTC.

NOTE:
Combination meter blinks AFS OFF indicator lamp (approximately 1 second each) if AFS OFF indicator
lamp signal is not received from AFS control unit. 

HEADLAMP AUTO AIMING

Headlamp Auto Aiming Control Description

• AFS control unit controls the headlamp light axis height appropriately according to the vehicle height.
• AFS control unit detects the vehicle condition necessary for headlamp auto aiming control with the following

signals.

- Height sensor signals (front and rear)
- Vehicle speed signal (received from combination meter via CAN communication)
- Low beam status signal (received from IPDM E/R via CAN communication)
- Engine speed signal (received from ECM via CAN communication)
• When the operation conditions are satisfied, AFS control unit transmits the aiming motor drive signal for

adjusting the headlamp axis height. 

Headlamp auto aiming operation condition

- Headlamp ON
- While the engine running
- Vehicle speed (Control mode is switched according to the driving condition.)

Headlamp Auto Aiming Operation

• AFS control unit calculates the vehicle pitch angle from the front and rear height sensor signal. AFS control

unit judges the angle for adjusting the axis gap from the preset position. 

• AFS control unit controls the headlamp axis by changing the aiming motor drive signal output according to

the front and rear vehicle height when detecting the following vehicle condition. Output is maintained if other
condition than following is detected.

- Engine starts.
- Headlamp is turned ON.
- Vehicle posture becomes stable after changing the vehicle posture change is detected with the headlamp

ON and the vehicle stopped.

- Vehicle speed is maintained with the headlamp ON and the vehicle driven.

CAUTION:

Adjusted axis position may differ from the preset position although the headlamp auto aiming acti-
vates properly if the suspension is replaced or worn. 

SYSTEM

EXL-17

< SYSTEM DESCRIPTION >

[XENON TYPE]

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ACTIVE ADAPTIVE FRONT-LIGHTING SYSTEM : Fail-Safe

INFOID:0000000006422028

HEADLAMP AIMING CONTROL (MANUAL)

DTC

Fail-safe

AFS OFF indicator lamp

Cancellation

U1000: CAN COMM CIRCUIT

• Right and left swivel motors 

stop at the position when DTC 
is detected.

• Right and left aiming motors 

stop at the position when DTC 
is detected.

Blinks 1 second each.

Ignition switch OFF

U1010: CONTROL UNIT (CAN)

• Right and left swivel motors 

stop at the position when DTC 
is detected.

• Right and left aiming motors 

stop at the position when DTC 
is detected.

Blinks 1 second each.

Ignition switch OFF

B2503: SWIVEL ACTUATOR [RH]

• Right swivel motors stop at the 

position when DTC is detected.

• The signal, approximately 2 V 

decreased from the levelizer 
signal when DTC detected, is 
output.

Blinks 1 second each.

Ignition switch OFF

B2504: SWIVEL ACTUATOR [LH]

• Left swivel motors stop at the 

position when DTC is detected.

• The signal, approximately 2 V 

decreased from the levelizer 
signal when DTC detected, is 
output.

Blinks 1 second each.

Ignition switch OFF

B2513: HI SEN UNUSUAL [FR]

• Right and left aiming motors 

stop at the position when DTC 
is detected.

Ignition switch OFF

B2514: HI SEN UNUSUAL [RR]

• Right and left aiming motors 

stop at the position when DTC 
is detected.

Ignition switch OFF

C0126: ST ANG SEN SIG

• Right and left swivel motor 

swivel angle returns to 0

°

 and 

fixed.

Blinks 1 second each.

Ignition switch OFF

B2516: SHIFT SIG [P, R]

• Right and left swivel motor 

swivel angle returns to 0

°

 and 

fixed.

Blinks 1 second each.

Ignition switch OFF

B2517: VEHICLE SPEED SIG

• Right and left swivel motor 

swivel angle returns to 0

°

 and 

fixed.

• Right and left aiming motors 

stop at the position when DTC 
is detected.

Blinks 1 second each.

Ignition switch OFF

B2519: LEVELIZER CALIB

• Right and left aiming motors 

stop at the position when DTC 
is detected.

When the levelizer adjustment is 
completed.

C0428: ST ANGLE SEN CALIB

• Right and left swivel motor 

swivel angle returns to 0

°

 and 

fixed.

Blinks 1 second each.

When the steering angle sensor 
neutral position registration is 
competed.

B2521: ECU CIRC

• Right and left swivel motors 

stop at the position when DTC 
is detected.

• Right and left aiming motors 

stop at the position when DTC 
is detected.

Blinks 1 second each.

Ignition switch OFF

EXL-18

< SYSTEM DESCRIPTION >

[XENON TYPE]

SYSTEM

HEADLAMP AIMING CONTROL (MANUAL) : System Description

INFOID:0000000006216751

The headlamp levelizer adjusts the headlamp light axis upward and downward with the aiming motor inte-
grated in the front combination lamp.

TURN SIGNAL AND HAZARD WARNING LAMP SYSTEM

TURN SIGNAL AND HAZARD WARNING LAMP SYSTEM : System Diagram

INFOID:0000000006213901

TURN SIGNAL AND HAZARD WARNING LAMP SYSTEM : System Description

INFOID:0000000006213902

OUTLINE

Turn signal and the hazard warning lamp is controlled by combination switch reading function, flasher control
function and auto hazard function of BCM.

TURN SIGNAL LAMP OPERATION

• BCM detects the combination switch condition by the combination switch reading function.
• BCM supplies voltage to the right (left) turn signal lamp circuit when the ignition switch is turned ON and the

turn signal switch is in the right (left) position. BCM blinks the turn signal lamp.

HAZARD WARNING LAMP OPERATION

BCM supplies voltage to both turn signal lamp circuit when the hazard switch is turned ON. BCM blinks the
hazard warning lamp.

TURN SIGNAL INDICATOR LAMP AND TURN SIGNAL SOUND OPERATION

• BCM transmits the turn indicator signal to the combination meter via CAN communication while the turn sig-

nal lamp and the hazard warning lamp operating.

• Combination meter outputs the turn signal sound with the integrated buzzer while blinking the turn signal

indicator lamp according to the turn indicator signal.

HIGH FLASHER OPERATION

• BCM detects the turn signal lamp circuit status from the current value.
• BCM increases the turn signal lamp blinking speed if the bulb or harness open is detected with the turn sig-

nal lamp operating.
NOTE:
The blinking speed is normal while operating the hazard warning lamp.

PARKING, LICENSE PLATE, SIDE MARKER AND TAIL LAMP SYSTEM

PARKING, LICENSE PLATE, SIDE MARKER AND TAIL LAMP SYSTEM : System Di-

JPLIA0180GB

SYSTEM

EXL-19

< SYSTEM DESCRIPTION >

[XENON TYPE]

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INFOID:0000000006213903

PARKING, LICENSE PLATE, SIDE MARKER AND TAIL LAMP SYSTEM : System De-
scription

INFOID:0000000006213904

OUTLINE

Parking, license plate, side marker and tail lamps are controlled by combination switch reading function and
headlamp control function of BCM, and relay control function of IPDM E/R.

PARKING, LICENSE PLATE, SIDE MARKER AND TAIL LAMPS OPERATION 

• BCM detects the combination switch condition by the combination switch reading function.
• BCM transmits the position light request signal to IPDM E/R and the combination meter via CAN communi-

cation according to the ON/OFF condition of the parking, license plate, side marker and tail lamps.

Parking, license plate, side marker and tail lamps ON condition

- Lighting switch 1ST
- Lighting switch 2ND
- Lighting switch AUTO, and the auto light function ON judgment
- Lighting switch AUTO, with the front fog lamp switch ON and the ignition switch ON
• IPDM E/R turns the integrated tail lamp relay ON and turns the parking, license plate, side marker and tail

lamps ON according to the position light request signal.

• Combination meter turns the tail lamp indicator lamp ON according to the position light request signal.

PARKING, LICENSE PLATE, SIDE MARKER AND TAIL LAMP SYSTEM : Fail-safe

INFOID:0000000006213905

CAN COMMUNICATION CONTROL

When CAN communication with BCM is impossible, IPDM E/R performs fail-safe control. After CAN communi-
cation recovers normally, it also returns to normal control.

If No CAN Communication Is Available With BCM

*: With daytime running light system

FRONT FOG LAMP SYSTEM

JMLIA0687GB

Control part

Fail-safe operation

• Parking  lamps
• License plate lamps
• Illuminations
• Tail lamps

• Turns ON the tail lamp relay and daytime running light relay

*

 when the ignition switch 

is turned ON

• Turns OFF the tail lamp relay and daytime running light relay

*

 when the ignition switch 

is turned OFF

 

 

 

 

 

 

 

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