Rear Window Defogger Timer Relay (If Equipped) Inspection

Disconnect rear defogger timer relay.
Connect (+) wire and (-) wire of 12 V battery to terminal "A", "B", "C", "D", and "test light (12 V, 3.4 W) (1)" as shown in figure.
Connect (-) wire of 12 V battery to terminal "E" and check if test light (1) come on.
After 10 minutes, if test light go out, it means that timer relay is operating.

Fig 1: Inspecting Rear Window Defogger Timer Relay
Courtesy of SUZUKI OF AMERICA CORP.