|Originally posted by Bloozberry:|
The defroster circuit also has a special relay that has an integral timer in it. If I recall correctly the first time you turn on the defroster the relay will stay energized for something like 15 minutes. Once it turns off, if you re-press the switch it will come on for something like 7 minutes each successive time after the first 15 minutes. It resets itself once you turn off the ignition. All this to say that it could be the defroster relay that's malfunctioned too. If you need a copy of the circuit from the FSM, just say so and I can post one for you.
10 then 5 or 5 then 2.5 depending on year. later cars have short on time. Times are labeled on the relay.
the "relay" is above brake pedal.
Most problem are defog grid on glass, switch, breaker is bad, or something is shorting and blow the breaker or fuse.
Relay maybe but is very reliable.
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