Defroster Switch Light Is Blinking: Wiring Diagram

WARNING: This page is about a different car, the 2013 Subaru Forester. However, it is still accessible from the selected car via links, so may be relevant.

Air Conditioning System < Refer to appropriate SYSTEM WIRING DIAGRAM. >

Fig 1: Air Conditioning System - Wiring Diagram (Defroster Switch Light Is Blinking)

Courtesy of SUBARU OF AMERICA, INC.

Step	Check	Yes	No
1 CHECK INDICATOR BLINKING. Turn the ignition switch to ON.	Does the indicator blink?	Go to step 2 .	System is normal.
2 CHECK INDICATOR BLINKING. Turn the ignition switch to OFF and wait for 3 minutes. Turn the ignition switch to ON again.	Does the indicator blink?	Go to step 3 .	System is normal.
3 CHECK AUTO A/C CONTROL MODULE POWER CIRCUIT. Turn the ignition switch to OFF. Disconnect the auto A/C control module harness connector. Measure the voltage between auto A/C control module and chassis ground after turning the ignition switch to the ON position. Connector & terminal (i88) No. 31 (+) - Chassis ground (-):	Is the voltage 9 V or less?	Check the harness for open or short circuit. Check the battery condition.	System is normal.