nissan Workshop Repair Guides

Nissan and Datsun Workshop Manuals

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Air Conditioning Switch: Description and Operation

PURPOSE

To send a signal to the Engine Control Module (ECM), activating the fast idle control system, with the A/C on.

OPERATION

When the dash mounted A/C switch is closed, the ECM activates the system by grounding the A/C relay.
Once the A/C system is activated, the ECM will increase the duty cycle of the Idle Air Control-Auxiliary Air Control (IACV-ACC) Valve and
stabilize the idle.

Heating and Air Conditioning > Air Conditioning Switch > Component Information > Description and Operation

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