High Beam Operation/Flash-to-Pass Operation

WARNING: This page is about a different car, the 2005 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 receives input requesting the headlamp high beams to illuminate. This input is communicated to the IPDM E/R across the CAN communication lines. The CPU of the combination meter controls the ON/OFF status of the HIGH BEAM indicator. The CPU of the IPDM E/R controls the headlamp high relay coil. When energized, this relay directs power

Through 10A fuse (No. 40, located in the IPDM E/R)
Through IPDM E/R terminal 27
To daytime light relay terminal 1
Through daytime light relay terminal 2
To grounds E9, E15 and E24.

When energized, the daytime light relay directs power

Through daytime light relay terminal 3
To daytime light control unit terminal 8 and
To headlamp RH (high) terminal 1.

Also when the headlamp high relay is energized, it directs power

Through 10A fuse (No. 38, located in the IPDM E/R)
Through IPDM E/R terminal 28
To daytime light control unit terminal 5
Through daytime light control unit terminal 6
To headlamp LH (high) terminal 1.

Ground is supplied

To headlamp RH (high) terminal 2
Through grounds E9, E15 and E24, and
To headlamp LH (high) terminal 2
To daytime light control unit terminal 7
Through daytime light control unit terminal 9
Through grounds E9, E15 and E24.

With power and ground supplied, the high beam headlamps illuminate.