Chart C10A - A/C Clutch Control

The A/C clutch control relay is ECM controlled to delay A/C clutch engagement .4 second after A/C is turned on. This allows the IAC adequate time to adjust engine RPM before the A/C clutch engages. The ECM also causes the relay to disengage the A/C clutch during Wide Open Throttle (WOT) operation. The A/C clutch control relay is energized when the ECM provides a ground path for circuit No. 366.

1. Checks operation of A/C cycling switch.
2. Checks to see if the ECM is controlling the A/C clutch control relay.
3. Checks for open circuit on either side of relay coil.

Fig 1: Chart C10A, Schematic, A/C Clutch Control (3.8L "C" & "H" Bodies)

Fig 2: Flow Chart C10A, A/C Clutch Control (3.8L "C" & "H" Bodies)