Infiniti M35/M45 Y50. Manual — part 884

HEADLAMP (FOR CANADA) - DAYTIME LIGHT SYSTEM -

LT-81

DAYTIME LIGHT OPERATION

With the engine running, the lighting switch in the OFF or AUTO position (headlamp is not illuminate) and
parking brake released, the IPDM E/R receives input request signal from BCM to turn on daytime light. This
input is communicated across the CAN communication lines. The CPU of the IPDM E/R controls the daytime
light relay coil. When energized, this relay directs power

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through daytime light relay terminals 5 and 3

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through front combination lamp RH terminal 2

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through front combination lamp RH terminal 6

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through IPDM E/R terminal 27

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through 10A fuse (No. 72, located in IPDM E/R)

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through 10A fuse (No. 74, located in IPDM E/R)

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through IPDM E/R terminal 28

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to front combination lamp LH terminal 6.

Ground is supplied

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to combination lamp LH terminal 2

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through grounds E22 and E43.

With power and grounds supplied, the daytime lights illuminate. The high beam headlamps are now wired in
series and illuminate at a reduced intensity.

COMBINATION SWITCH READING FUNCTION

Refer to

BCS-3, "COMBINATION SWITCH READING FUNCTION"

AUTO LIGHT OPERATION

For auto light operation, refer to

LT-115, "System Description"

CAN Communication System Description

NKS004HQ

CAN (Controller Area Network) is a serial communication line for real time application. It is an on-vehicle mul-
tiplex communication line with high data communication speed and excellent error detection ability. Many elec-
tronic control units are equipped onto a vehicle, and each control unit shares information and links with other
control units during operation (not independent). In CAN communication, control units are connected with 2
communication lines (CAN H line, CAN L line) allowing a high rate of information transmission with less wiring.
Each control unit transmits/receives data but selectively reads required data only.

CAN Communication Unit

NKS004HR

Refer to

LAN-50, "CAN System Specification Chart"