Engine Block Heater Inspection

WARNING: This page is about a different car, the 2003 Suzuki Vitara. However, it is still accessible from the selected car via links, so may be relevant.

Check continuity between terminal "a" and "c". If there is no continuity, replace it.
Check that there is no continuity between terminal "a" or "b" and "c". If there is continuity replace it.
Check continuity between terminal "c" and engine block heater body. If there is not continuity, replace it.

Fig 1: Identifying Engine Block Heater Terminals

Courtesy of SUZUKI OF AMERICA CORP.