A/C Compressor Or Relay Failure
Diagnose A/C system if shorted to ground. If relay is faulty, an idle problem may exist. See ROUGH, UNSTABLE, INCORRECT IDLE, STALLING in the CCC TESTS W/O CODES article in this section.
IDLE SPEED ERROR FLOW CHART (2.8L, 4.3L, 5.0L, 5.7L & 7.4L ENGINES)
NOTE:
"Scan" Tool Must Be In Open Mode During This Check