Integra (RS, LS) L4-1834cc 1.8L DOHC PFI (1995)
A/C Signal: Description and Operation
DESCRIPTION
The air conditioning (A/C) signal is used to inform the Engine Control Module (ECM) that a request for air conditioning has been made.
OPERATION
When the A/C switch is closed, pin A26 of the ECM is grounded, informing the ECM that the air conditioning has been turned on. The ECM then
controls the compressor relay and adjusts idle speed to compensate for compressor load.