WARNING: This page is about a different car, the 2003 Infiniti QX4. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Cruise Control Circuit
Fig 2: Intelligent Cruise Control Circuit (1 of 3)
Fig 3: Intelligent Cruise Control Circuit (2 of 3)
Fig 4: Intelligent Cruise Control Circuit (3 of 3)