October 30: LEMON manuals on a temporary server, it is slow and having issues, download the manuals you need! Later in November we will switch back to the fast server.

Possible Causes

WARNING: This page is about a different car, the 2005 Lincoln LS. However, it is still accessible from the selected car via links, so may be relevant.

An open in circuit 30-FB3 (RD/OG)/30-FA1 (RD), 91S-FB3 (BN/BL) or 91S-FB4 (BN/GN).
A short to ground or voltage in circuit 91S-FB3 (BN/BL) or 91S-FB4 (BN/GN).
A short to voltage in circuit 91S-FB3 (BN/BL) or 91S-FB4 (BN/GN).
Coolant control valve.
Evaporator discharge air temperature sensor.
DATC module.