• Fan mode relay

(3) — (5): Continuity exists.

(1) — (4): Continuity exists.

(1) — (2): Continuity does not exist.

While applying battery voltage to the terminal between (3) and (5), check for continuity between (1) and (2).

If no continuity exists, replace the relay with a new part.

• A/C relay, main fan relay, sub fan relay

(3) — (4): Continuity exists.

(1) — (2): Continuity does not exist.

While applying battery voltage to the terminal between (3) and (4), check for continuity between (1) and (2).

If no continuity exists, replace the relay with a new part.