1 Check Intake Sensor Circuit Between Intake Sensor And Ground
WARNING: This page is about a different car, the 2004 Infiniti I35. However, it is still accessible from the selected car via links, so may be relevant.
Disconnect intake sensor harness connector.
Do approx. 5 volts exist between intake sensor harness connector terminal No. 1 and ground?
Fig 1: Checking Intake Sensor Circuit Between Intake Sensor And Ground