Question about 2003 Honda Pilot
The courtesy light on the bottom of the driver side door and all of the individual map lights do not come on automatically when I open the driver side door. The courtesy light on the bottom of the passenger side door and all of the individual map lights do come on automatically when I open any of the other doors. The light control switch on the dashboard is in the Door Activated position. This is a 2003 Honda Pilot. This doesn't seem like a fuse problem. Any suggestions?
The driver's door has a switch which tells the multiplexer control unit that the door is open and the control unit then switches on the lights. It sounds like the switch is not making contact when the driver's door is open. The lights work and the other door switches work--so it isn't a fuse or multiplexer problem.
Posted on Feb 28, 2009
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Posted on Jan 02, 2017
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The liftgate lamps
The courtesy lamp supply voltage circuit of the body control module (BCM) supplies battery positive voltage to the dome lamp, the liftgate lamps, and the map lamps. When any door is opened, the door jamb switch contacts close providing a door open input to the BCM. The BCM then provides a ground to the interior lamps with the switch in the AUTO position. The interior lamps receive a ground at G401 with the switch in the ON position.
Important: If the liftgate is opened after all the modules go to sleep, the dome light will not come on. The liftgate ajar switch input to the BCM will not wake up the BCM once it has gone to sleep, so the dome light will not come on. Once the BCM gets an input to wake it up, from remote keyless entry (RKE) or a door handle, the dome light will turn on when the liftgate is opened.
If the driver inadvertently leaves any interior lamp ON, the BCM will turn it OFF after a 20 minute time-out.
The courtesy lamps will turn OFF immediately if the ignition switch is turned to the ON position or approximately 20 seconds after all doors are closed.
The courtesy lamps are controlled by the body control module (BCM). Inputs from the dome lamp switch and the door ajar switches are monitored by the BCM. When a door ajar switch is closed, or the dome lamp switch is turned to the ON position, the BCM supplies the B+ for the courtesy lamps.
With out a factory Tech2 scan tool or equivalent an knowing how these systems work ,you best bet is to take your vehicle to the dealer or some other ASE certified repair shop !
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