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Home >> Infiniti >> 2000 >> Q45 Base >> Repair and Diagnosis >> External Pages >> Different car >> Section 5 (Engine Controls - System & Component Testing) >> Miscellaneous Controls >> A/C Clutch Relay
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A/C Clutch Relay

WARNING: This page does not describe the selected car, but rather 9 other vehicles, including the 2000 Nissan Xterra, 2000 Nissan Sentra, 2000 Nissan Quest, 2000 Nissan Pathfinder, and 2000 Nissan Maxima. However, it is still accessible from the selected car via links, so may be relevant.
  1. A/C clutch relay is controlled by PCM. Under normal conditions, PCM will engage clutch relay by providing a ground circuit for relay windings. If PCM receives a wide open throttle signal from throttle position sensor while it is also receiving an A/C on signal from A/C auto amplifier, PCM will disengage relay.
  2. Remove A/C relay located in underhood relay box. Apply battery voltage to terminals No. 1 and 2. See Figure, Figure and Figure . Continuity should exist between terminals No. 3 and 5. When battery voltage is removed, continuity should not exist. Replace relay if continuity is not as specified.
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