High Beam Operation/Flash-to-Pass Operation
WARNING: This page is about a different car, the 2004 Nissan Quest. However, it is still accessible from the selected car via links, so may be relevant.
With the lighting switch in 2ND position and placed in HIGH or PASS position, the BCM (body control module) receives input requesting the headlamp high beams to illuminate. This input is communicated to the IPDM E/R (intelligent power distribution module engine room) across the CAN communication lines. The central processing unit of the IPDM E/R controls the headlamp high relay coil. When energized, this relay directs power
- to 10A fuse [No. 40, located in the IPDM E/R]
- through terminal 27 of the IPDM E/R
- to terminal 1 of headlamp RH, and
- to 10A fuse [No. 38, located in the IPDM E/R]
- through terminal 28 of the IPDM E/R
- to terminal 1 of headlamp LH.
Ground is supplied at all times
- to terminal 2 of headlamp LH and RH
- through body grounds E9, E15 and E24.
With power and ground supplied, the high beam headlamps and the HIGH BEAM indicator illuminate.