Nissan Xterra. Instruction — part 380
EXL-8
< SYSTEM DESCRIPTION >
HEADLAMP
Component Description
INFOID:0000000009484848
1.
IPDM E/R E122, E123, E124
2.
BCM M18, M20 (view with lower instru-
ment panel LH removed)
3.
Combination switch (lighting and turn
signal switch) M28
4.
Combination meter M24
Part name
Description
BCM
• Receives combination switch (lighting and turn signal switch)
request via BCM combination switch reading function.
• Sends headlamp high/low request signal to the IPDM E/R.
IPDM E/R
Activates the headlamp high and headlamp low relays upon re-
quest from the BCM.
Combination switch (lighting and turn signal switch)
Outputs lighting requests to the BCM.
DAYTIME RUNNING LIGHT SYSTEM
EXL-9
< SYSTEM DESCRIPTION >
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DAYTIME RUNNING LIGHT SYSTEM
System Diagram
INFOID:0000000009484849
System Description
INFOID:0000000009484850
The headlamp system for Canada vehicles is equipped with a daytime light control that activates the high
beam headlamps at approximately half illumination whenever the engine is operating. If the parking brake is
applied before the engine is started the daytime lights will not be illuminated. The daytime lights will illuminate
once the parking brake is released. Thereafter, the daytime lights will continue to operate when the parking
brake is applied.
OPERATION
The BCM monitors inputs from the parking brake switch and the combination switch (lighting and turn signal
switch) to determine when to activate the daytime light system. The BCM sends a daytime light request to the
IPDM E/R via the CAN communication lines. The IPDM E/R grounds the daytime light relay 1 which in turn,
provides power to the ground side of the LH high beam lamp. Power flows backward through the LH high
beam lamp to the IPDM E/R, through the high beam fuses, through the RH high beam lamp circuit to the RH
high beam lamp and on to ground. The high beam lamps are wired in series which causes them to illuminate
at a reduced intensity.
AWLIA2079GB
EXL-10
< SYSTEM DESCRIPTION >
DAYTIME RUNNING LIGHT SYSTEM
Component Parts Location
INFOID:0000000009484851
Component Description
INFOID:0000000009484852
1.
IPDM E/R E119, E122, E123, E124
2.
Parking brake switch B84
3.
BCM M18, M20 (view with lower instru-
ment panel LH removed)
4.
ECM E16 (view with ECM cover re-
moved)
5.
Generator E205, E209
6.
Daytime light relay 1 E103
7.
Daytime light relay 2 E104
8.
Combination switch (lighting and turn
signal switch) M28
9.
Combination meter M24
WKIA4958E
Part name
Description
BCM
• Receives combination switch (lighting and turn signal switch)
inputs via BCM combination switch reading function.
• Receives park brake applied input from the park brake switch.
• Receives engine running status from the ECM via CAN com-
munication.
IPDM E/R
Receives daytime light request from the BCM and activates the
daytime light relay.
Combination switch (lighting and turn signal switch)
Outputs lighting requests to the BCM.
DAYTIME RUNNING LIGHT SYSTEM
EXL-11
< SYSTEM DESCRIPTION >
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Parking brake switch
Outputs parking brake status to the combination meter which for-
wards that information to the BCM via CAN communication.
ECM
Outputs engine running status to the BCM.
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