Nissan X-Trail 32. Manual - part 1146

SYSTEM

EXL-41

< SYSTEM DESCRIPTION >

[LED HEADLAMP]

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

INFOID:0000000010788762

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

STOP LAMP SYSTEM

JMLIA5519GB

DTC

CONSULT display description

Fail-safe

B20D2

PARKING LAMP PWR SPLY CIRC

[CIRC 
SHORT TO 
GRND]

Shuts off the power supply to the parking lamp (LH/RH) 
power supply circuit until the parking lamp, license plate 
lamp, and tail lamp ON conditions are no longer satisfied.

B20D4

TAIL LAMP LH PWR SPLY CIRC

[CIRC 
SHORT TO 
GRND]

Shuts off the power supply to the following power supply 
circuits until the parking lamp, license plate lamp, and tail 
lamp ON conditions are no longer satisfied.
• Tail lamp LH (body side)
• Tail lamp LH (back door side)
• License plate lamp LH
• License plate lamp RH

B20D5

TAIL LAMP RH PWR SPLY CIRC

[CIRC 
SHORT TO 
GRND]

Shuts off the power supply to the following power supply 
circuits until the parking lamp, license plate lamp, and tail 
lamp ON conditions are no longer satisfied.
• Tail lamp RH (body side)
• Tail lamp RH (back door side)

Control part

Fail-safe operation

• Parking lamp
• License plate lamp
• Tail  lamp

• Turns ON the tail lamp, parking lamp and license plate lamp when the ignition switch is turned 

ON.

• Turns OFF the tail lamp, parking lamp and license plate lamp when the ignition switch is turned 

OFF.

EXL-42

< SYSTEM DESCRIPTION >

[LED HEADLAMP]

SYSTEM

STOP LAMP SYSTEM : System Description

INFOID:0000000010788763

SYSTEM DIAGRAM

OUTLINE

Stop lamp and high-mounted stop lamp is controlled by combination switch reading function and the stop lamp
and high-mounted stop lamp control function of BCM, and forward emergency braking function of ABS actua-
tor and electric unit (control unit).

STOP LAMP AND HIGH-MOUNTED STOP LAMP OPERATION

• BCM detects the brake pedal position status from stop lamp switch. 
• BCM supplies voltage to stop lamp and high-mounted stop lamp according to the stop lamp and high-

mounted stop lamp ON condition.

Stop lamp and high-mounted stop lamp ON condition

- Brake pedal is depressed

FORWARD EMERGENCY BRAKING FUNCTION

• When the forward emergency braking operates, the ABS actuator and electric unit (control unit) transmits

the stop lamp request signal to BCM via CAN communication. (For details about the forward emergency
braking, refer to 

BRC-232, "System Description"

.)

• When BCM receives the stop lamp request signal from the ABS actuator and electric unit (control unit), it

supplies power to the stop lamp and high-mounted stop lamp systems, turning ON the stop lamp and high-
mounted stop lamp.

JMLIA5234GB

SYSTEM

EXL-43

< SYSTEM DESCRIPTION >

[LED HEADLAMP]

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STOP LAMP SYSTEM : Circuit Diagram

INFOID:0000000010788764

FRONT FOG LAMP SYSTEM

JMLIA5520GB

EXL-44

< SYSTEM DESCRIPTION >

[LED HEADLAMP]

SYSTEM

FRONT FOG LAMP SYSTEM : System Description

INFOID:0000000010788765

SYSTEM DIAGRAM

OUTLINE

Front fog lamp is controlled by combination switch reading function and front fog lamp control function of BCM,
and smart FET control function of IPDM E/R.

FRONT FOG LAMP OPERATION 

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

cation according to the front fog lamp ON condition.

Front fog lamp ON condition

- Front fog lamp switch is turned from OFF to ON, and any of the following conditions are satisfied.
• Lighting switch 1ST
• Lighting switch 2ND
• Lighting switch AUTO (Only when the illumination judgment by auto light system is ON. For details, refer to

EXL-24, "AUTO LIGHT SYSTEM : System Description"

.)

• IPDM E/R turns the integrated smart FET ON, and turns the front fog lamp ON according to the front fog light

request signal.

• Combination meter turns the front fog lamp indicator lamp ON according to the front fog light request signal.

JMLIA5239GB