Nissan Maxima Service and Repair Manual: Daytime running light system

System Diagram

Nissan Maxima. System Diagram

System Description

The headlamp system for Canada vehicles is equipped with a daytime light relay that activates the high beam headlamps at approximately half illumination whenever the engine is running. If the parking brake is depressed 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 depressed.

Component Parts Location

Nissan Maxima. Component Parts Location

  1. IPDM E/R E17, E18, E200, E201
  2. BCM M16,M17, M18, M19 (view with combination meter removed)
  3. Combination switch (lighting and turn signal switch) M28
  4. Combination meter M24
  5. Parking brake switch E35
  6. Daytime light relay E228

Component Description

After starting the engine with the parking brake released and the lighting switch in the OFF or 1ST position, the headlamp high beam automatically turns on. With the lighting switch in the 2nd position or with autolamps ON, the headlamps function the same as conventional light systems.

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 which in turn, provides power to the ground side of the RH high beam lamp. Power flows backward through the RH high beam lamp to the IPDM E/R, through the high beam fuses, through the LH high beam lamp circuit to the LH high beam lamp and on to ground. The high beam lamps are wired in series which causes them to illuminate at a reduced intensity.

Nissan Maxima. Component Description

  • Hi: "HIGH BEAM" position
  • Lo: "LOW BEAM" position
  • P: "FLASH TO PASS" position
  • ×: Lamp "ON"
  • -: Lamp "OFF"
  • : Lamp dims. (Added functions)
  • *: When starting the engine with the parking brake released, the daytime lights will operate.

    When starting the engine with the parking brake depressed, the daytime lights will not operate.

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    Nissan Maxima Service and Repair Manual

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