KM3 - Check Continuity Between WAC Relay and A/C Relay

- Key "OFF".

- Wide Open Throttle A/C Cut-Off (WAC) relay disconnected.

- Disconnect A/C relay.

- Measure resistance between the A/C relay output to the WAC relay at the A/C relay vehicle harness connector and the A/C relay input at the WAC relay vehicle harness connector.

- Is resistance less than 5.0 ohms?

Yes -- Reconnect WAC relay. Refer to Heating and Air Conditioning to check for proper input to A/C relay from B+, IGN RUN and A/C demand circuits; proper A/C relay operation, etc.

No -- Service open circuit. Reconnect WAC relay and A/C relay. Re-evaluate symptom.