KF30 - Check Dual Function A/C Pressure Switch

- Key "OFF".

- Low Fan Control (LFC) relay disconnected.

- Reconnect High Fan Control (HFC) relay.

- Disconnect A/C Pressure Switch (ACPSW) (also known as Refrigerant Containment/Fan Function switch).

- Start engine.

- Does fan run?

Yes -- Key "OFF". Go to KF31. KF31 - Check PCM

No -- Key "OFF". Reconnect LFC and HFC relays. Go to Heating and Air conditioning/Testing and Inspection to check ACPSW operation.