D21 Hardbody 4WD V6-2960cc 3.0L SOHC MFI (VG30E) (1991)
A/C Relay: Description and Operation
The A/C relay (BLUE), located on the R.F. fender apron in between the relay box and the firewall, signals the ECU when the A/C compressor is
engaged. The ECU can then raise the idle to compensate for the added load.