KM7 - Check WAC Relay

- Key "OFF".

- Breakout box installed, Powertrain Control Module (PCM) disconnected.

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

- Disconnect A/C clutch.

- Key "ON", engine "OFF".

- A/C demand switch to "A/C On".

- Measure voltage between the power side of the A/C clutch vehicle harness connector and the battery negative post.

- Is voltage greater than 10.5 volts?

Yes -- Go to KM8. KM8 - Check ECT and TP Inputs

No -- Replace WAC relay. Remove breakout box. Reconnect all components. Re-evaluate symptom.