Nissan X-Trail 32. Manual - part 1197

SYSTEM

EXL-245

< SYSTEM DESCRIPTION >

[HALOGEN HEADLAMP]

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FRONT FOG LAMP SYSTEM : System Description

INFOID:0000000010789800

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-228, "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

EXL-246

< SYSTEM DESCRIPTION >

[HALOGEN HEADLAMP]

SYSTEM

FRONT FOG LAMP SYSTEM : Circuit Diagram

INFOID:0000000010789801

FRONT FOG LAMP SYSTEM : Fail-safe

INFOID:0000000010789802

FAIL-SAFE CONTROL BY DTC

IPDM E/R performs fail-safe control when any DTC are detected.

JMLIA5356GB

SYSTEM

EXL-247

< SYSTEM DESCRIPTION >

[HALOGEN HEADLAMP]

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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

REAR FOG LAMP SYSTEM

REAR FOG LAMP SYSTEM : System Description

INFOID:0000000010789803

SYSTEM DIAGRAM

OUTLINE

Rear fog lamp is controlled with the combination switch reading function and the rear fog lamp control function
of BCM. 

REAR FOG LAMP OPERATION

• BCM detects the condition of the combination switch by the combination switch reading function.
• BCM supplies voltage to rear fog lamp according to the rear fog lamp ON condition.

Rear fog lamp ON condition

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

EXL-228, "AUTO LIGHT SYSTEM : System Description"

.)

• BCM transmits the rear fog lamp status signal to the combination meter using CAN communication. 
• Combination meter turns the rear fog lamp indicator lamp ON according to the rear fog lamp status signal.

DTC

CONSULT display description

Fail-safe

B121A

FR FOG LAMP LH PWR SPLY CIRC

[CIRC 
SHORT TO 
GRND]

Shuts off the power supply to the front fog lamp LH power 
supply circuit until the front fog lamp ON conditions are no 
longer satisfied.

B1256

FR FOG LAMP RH PWR SPLY CIRC

[CIRC 
SHORT TO 
GRND]

Shuts off the power supply to the front fog lamp RH power 
supply circuit until the front fog lamp ON conditions are no 
longer satisfied.

Control part

Fail-safe operation

Front fog lamp

Front fog lamp: OFF

JMLIA3188GB

EXL-248

< SYSTEM DESCRIPTION >

[HALOGEN HEADLAMP]

SYSTEM

REAR FOG LAMP SYSTEM : Circuit Diagram

INFOID:0000000010789804

EXTERIOR LAMP BATTERY SAVER SYSTEM

JMLIA5357GB