WARNING: This page is about a different car, the 2003 Infiniti M45. However, it is still accessible from the selected car via links, so may be relevant.

Power is supplied at all times

to BCM terminal 105
through 10A fuse [No.3, located in the fuse block (J/B) No. 1]
to key switch terminal 3
through 10A fuse [No.32, located in the fuse block (J/B) No. 2].

When the key switch is ON (key is inserted in ignition key cylinder), power is supplied

to BCM terminal 69
through key switch terminal 4.

When the ignition switch is ACC, power is supplied

to BCM terminal 60
through 10A fuse [No. 21, located in the fuse block (J/B) No. 1].

When door switch is in OPEN position, ground is supplied

to BCM terminal 142 (driver side), 37 (passenger side), 33 (Rear LH),143 (Rear RH)
through door switches terminal 1.

When door is unlocked, ground is supplied

to driver door control unit (LCU01) terminal 6 or passenger, rear LH, RH door control unit terminal 2
from terminal 2 of each door unlock sensor.

Electronic key signal input

to BCM terminal 27
through remote keyless entry receiver.

The remote keyless entry system controls operation of the

power door lock
hazard and horn reminder
trunk lid opener
panic alarm
keyless power window down (open)
auto door lock
map lamp.

BCM is connected to LCU01 via DATA LINE A-3.

When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

• You smell fuel, burning insulation, or see smoke.

• Brakes feel soft, pull hard to one side, or make grinding noises.

• The engine overheats, stalls repeatedly, or misfires under load.

• You are missing required tools, torque specs, or safe lifting equipment.

• You are not confident in the next step or safety outcome.

Safety Warning

Power Supply And Ground

Use the Manual With the Right Hardware

When to See a Mechanic

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