A/C Clutch Relay
- The A/C clutch relay is controlled by ECU. Under normal conditions, ECU will engage clutch relay by providing a ground circuit for relay windings. If ECU receives a wide open throttle signal from throttle position sensor while it is also receiving a A/C on signal from A/C Auto Amplifier, ECU will disengage relay.
- A/C clutch relay (Blue or Green) is located in relay box on right side of engine compartment. On M30, relay is second one from rear. On Q45, relay is in rearmost position.
- Remove relay from relay box. Apply ground to terminal No. 2 of relay. See Fig 1
. Apply battery voltage to terminal No. 1 of relay. With relay energized, continuity should exist between terminals No. 3 and 4. No continuity should exist with relay de-energized.
Courtesy of NISSAN MOTOR CO., U.S.A.