Test Km: Step 1

1) No A/C: Check For Voltage at A/C Clutch  Check all A/C related fuses in fuse panel before proceeding with this test. Use only DVOM, not diagnostic tester, for this step. With key off, disconnect A/C clutch harness connector. Turn A/C switch to A/C position. Set DVOM on 20-volt scale. Start engine and wait 10 seconds. Measure voltage between the power side of the A/C clutch vehicle harness connector and negative battery terminal. If voltage is greater than 10.5 volts, EEC-IV system is okay, diagnose A/C system. If voltage is less than 10.5 volts, go to next step.