Circuit Opening Relay

Ensure ignition is off. Remove C/OPN relay from relay box at driver's side front corner of engine compartment, near battery.
To test C/OPN relay continuity, use ohmmeter to check for continuity and no continuity between specified terminals on C/OPN relay. See Fig 1. If there is no continuity between terminals No. 1 and 2, or there is continuity between terminals No. 3 and 5, replace relay.
Apply battery positive voltage across terminals No. 1 and 2. Using an ohmmeter, check that there is continuity between terminals No. 3 and 5. See Fig 2. If there is no continuity, replace relay.

Fig 1: Inspecting Circuit Opening Relay Continuity

Fig 2: Inspecting Circuit Opening Relay Operation