A/C Relay Check

Remove A/C relay. See Fig 1 . Connect battery positive lead to relay terminal No. 1 (Red wire) and negative lead to relay terminal No. 2 (Blue/Black wire). Continuity should be present between relay terminals No. 3 (Green/Yellow wire) and No. 5 (Gray wire). If continuity is not present, replace relay.

Fig 1: Locating A/C Relay

Courtesy of VOLVO CARS OF NORTH AMERICA.