Nissan Qashqai J11. Manual — part 1680
SYSTEM
EXL-21
< SYSTEM DESCRIPTION >
[LED HEADLAMP]
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HIGH BEAM ASSIST SYSTEM : System Description
INFOID:0000000010338647
SYSTEM DIAGRAM
OUTLINE
• High beam assist system is a system that can reduce the driver's switch operation load. The system auto-
matically switches the headlamp to the low beam mode when a vehicle ahead or an oncoming vehicle
appears, while driving the vehicle with the headlamps in high beam mode at night.
• When the high beam assist system operation permission conditions are satisfied, the high beam assist indi-
cator lamp in the combination meter turns ON and informs that the high beam assist is in operation.
• High beam assist system is controlled by each function of BCM, front camera unit and IPDM E/R.
Control by BCM
- Combination switch reading function
- Auto light function
- High beam assist control function
- Headlamp control function
Control by IPDM E/R
- Smart FET control function
Control by Front camera unit
- High beam assist control function
OPERATION DESCRIPTION
• BCM detects the combination switch condition with the combination switch reading function.
• BCM transmits the high beam assist indicator lamp signal to the combination meter via CAN communication
when the high beam assist system operation permission conditions are satisfied.
High beam assist system operation permission conditions
- Lighting switch HI with the lighting switch AUTO and ignition switch ON (Only when the illuminating judgment
by auto light function is ON. For details, refer to
EXL-19, "AUTO LIGHT SYSTEM : System Description"
• Combination meter turns the high beam assist indicator lamp ON according to the high beam assist indicator
lamp signal.
• Front camera unit detects the vehicle status and ambient status that are required for high beam assist con-
trol with the following signals.
- Vehicle speed signal (received from combination meter via CAN communication)
- Ambient light signal (input from ambient light sensor integrated in the front camera unit)
- Image sensor signal (input from image sensor integrated in the front camera unit)
• Front camera unit judges the current recommended beam according to the vehicle status and ambient con-
dition, and transmits the high beam assist request signal (headlamp HI operation / headlamp LO operation)
to BCM via CAN communication.
• BCM switches the headlamp LO operation / headlamp HI operation according to high beam assist request
signal while the high beam assist system operation permission conditions are satisfied. For headlamp oper-
ation, refer to
EXL-17, "HEADLAMP SYSTEM : System Description"
RECOMMENDED BEAM JUDGMENT BY FRONT CAMERA UNIT
JMLIA5229GB
EXL-22
< SYSTEM DESCRIPTION >
[LED HEADLAMP]
SYSTEM
Headlamp HI Operation Request
Front camera unit requests the headlamp HI operation to BCM when all of following conditions are satisfied.
• Detects the vehicle speed is approx. 40 km/h or more.
• Recognizes the ambient condition is dark.
• Recognizes there is no oncoming vehicle or no vehicle ahead in front of the vehicle.
Headlamp LO Operation Request
Front camera unit requests the headlamp LO operation to BCM when either of following conditions is satisfied.
• Detects the vehicle speed is approx. 30 km/h or less.
• Recognizes the ambient condition is bright.
• Recognizes there is oncoming vehicle or vehicle ahead in front of the vehicle.
HIGH BEAM ASSIST SYSTEM : Fail-safe
INFOID:0000000010338649
FRONT CAMERA UNIT TEMPORARY OPERATION CANCELLATION
• Temporary disabled status at high temperature
- If the vehicle is parked in direct sunlight under high temperature conditions, the system may be deactivated
automatically. And the system malfunction in information display.
- When interior temperature is reduced, the system will resume operation automatically.
• When vehicle front identification is difficult
- When vehicle front identification is difficult due to soiling of windshield glass and strong light shining from the
front, operation may be canceled temporarily. At this time, a warning is displayed on the vehicle information
display in the combination meter.
- Normal operation recovers when conditions improve.
DAYTIME RUNNING LIGHT SYSTEM
DAYTIME RUNNING LIGHT SYSTEM : System Description
INFOID:0000000010338650
SYSTEM DIAGRAM
OUTLINE
Daytime running light is controlled by daytime running light control function and combination switch reading
function of BCM, and smart FET control function of IPDM E/R.
DAYTIME RUNNING LIGHT OPERATION
• BCM detects the combination switch condition by the combination switch reading function.
• BCM detects vehicle condition depending on the engine status signal and Stop/Start status signal* (received
from ECM via CAN communication).
• BCM transmits the daytime running light request signal to IPDM E/R via CAN communication according to
the daytime running light ON condition.
Daytime running light ON condition
- Engine running and any following conditions are satisfied.
• Lighting switch OFF
• Lighting switch AUTO (Only when the illumination judgment by auto light system is OFF. For details, refer to
EXL-19, "AUTO LIGHT SYSTEM : System Description"
.)
JMLIA5230GB
SYSTEM
EXL-23
< SYSTEM DESCRIPTION >
[LED HEADLAMP]
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• IPDM E/R turns the integrated smart FET ON, and turns the daytime running light ON according to the day-
time running light request signal.
NOTE:
When the engine is stopped by the Stop/Start system, the operation of daytime running light system is not can-
celed.*
*: With Stop/Start system
DAYTIME RUNNING LIGHT SYSTEM : Fail-safe
INFOID:0000000010338652
FAIL-SAFE CONTROL BY DTC
IPDM E/R performs fail-safe control when any DTC are detected.
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
HEADLAMP AIMING CONTROL SYSTEM (AUTO)
HEADLAMP AIMING CONTROL SYSTEM (AUTO) : System Description
INFOID:0000000010338656
SYSTEM DIAGRAM
OUTLINE
• Headlamp aiming control system is controlled by IPDM E/R.
• IPDM E/R controls the headlamp light axis height appropriately depending on the vehicle rear height.
• IPDM E/R detects the vehicle condition necessary for the headlamp aiming motor control with the following
signals.
- Height sensor signal (inputted from height sensor)
- Low beam request signal (received from BCM via CAN communication)
- Vehicle speed signal (received from combination meter via CAN communication)
HEADLAMP AUTO AIMING OPERATION
DTC
CONSULT display description
Fail-safe
B1231
DTRL RH PWR SPLY CIRC
[CIRC
SHORT TO
GRND]
Shuts off the power supply to the daytime running light RH
power supply circuit until the daytime running light ON
conditions are no longer satisfied.
B20CB
DTRL LH PWR SPLY CIRC
[CIRC
SHORT TO
GRND]
Shuts off the power supply to the daytime running light LH
power supply circuit until the daytime running light ON
conditions are no longer satisfied.
Control part
Fail-safe operation
Daytime running light
Daytime running light: OFF
JMLIA5231GB
EXL-24
< SYSTEM DESCRIPTION >
[LED HEADLAMP]
SYSTEM
• IPDM E/R calculates vehicle pitch angle from height sensor signal and determines the necessary correction
to compensate the deviation from standard light axis position.
• IPDM E/R outputs aiming motor drive signal when operating conditions are satisfied.
Operating condition (when all of the following conditions are satisfied)
- Ignition switch ON
- Headlamp (LO) ON
• IPDM E/R changes the aiming motor drive signal when any of the correcting condition is detected. Output is
maintained if other condition is detected.
Correcting condition (when any of the following conditions are satisfied)
- Ignition switch ON
- Headlamp (LO) is turned ON.
- Vehicle posture becomes stable after the vehicle posture change is detected with the headlamp (LO) ON
and the vehicle stopped.
- Vehicle speed is maintained with the headlamp (LO) ON and the vehicle driven.
NOTE:
Adjusted axis position may differ from the preset position although the headlamp auto aiming activates prop-
erly when the suspension is replaced or worn.
HEADLAMP AIMING CONTROL SYSTEM (AUTO) : Fail-safe
INFOID:0000000010338658
FAIL-SAFE CONTROL BY DTC
IPDM E/R performs fail-safe control when any DTC are detected.
DTC
CONSULT display description
Fail-safe
B1C00
HEIGHT SENSOR PWR SPLY CIRC
[CIRC
SHORT TO
GRND]
Right and left headlamp aiming motors stop at the posi-
tion when DTC is detected.
[CIRC
SHORT TO
BATTERY]
B1C02
RR HEIGHT SENSOR SIGNAL
[CIRC
SHORT TO
BATTERY]
Right and left headlamp aiming motors stop at the posi-
tion when DTC is detected.
[CIRC
SHORT TO
GROUND
OR OPEN]
[CIRC
VOLTAGE
OUT OF
RANGE]
B1C07
AIMING MOTOR DRIVE SIGNAL
[CIRC
SHORT TO
GRND]
Right and left headlamp aiming motors stop at the posi-
tion when DTC is detected.
[CIRC
SHORT TO
BATTERY]
[SIGNAL
COMPARE
FAILURE]
B1C12
RR HEIGHT SENSOR SIGNAL
[SIG
PRTCTN
CLCLTN IN-
CRCT]
Right and left headlamp aiming motors stop at the posi-
tion when DTC is detected.
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