my rear defrost isn't working
Registered!!
Joined: Dec 2007
Posts: 978
Likes: 0
Rep Power: 256 
Re: my rear defrost isn't working
maybe you blew a fuse? or the connections got disconnected? there are 2 visible connections (i believe) from the window into 2 small sockets on each end of the window. if all that is good then your rear window is probably defective. it only takes one scratch of the defroster wire (on the window) to ruin it.
Thread Starter
Registered!!
Joined: Jun 2005
Posts: 44
Likes: 0
Rep Power: 0 Re: my rear defrost isn't working
i checked the fuse in the engine bay, i believe that is the only fuse for the rear defrost, and it is still good. also i never touched those two plugs, i will go check.
35+ Years Driving Japanese Autos
iTrader: (1)
Joined: Mar 2005
Posts: 4,904
Likes: 14
Rep Power: 309 Re: my rear defrost isn't working
The defroster relay is the one just to the left of the large metal case relay at top near center in the under hood fuse box.
When quiet you should be able to hear it and also feel it if you grab the case (have someone turn it on and off with key at position II engine off.
You could try removing it and re-seating it. Also many of the relays in there have the same part # and could be interchanged (keep track of 2 that are swapped)
When quiet you should be able to hear it and also feel it if you grab the case (have someone turn it on and off with key at position II engine off.
You could try removing it and re-seating it. Also many of the relays in there have the same part # and could be interchanged (keep track of 2 that are swapped)
Thread Starter
Registered!!
Joined: Jun 2005
Posts: 44
Likes: 0
Rep Power: 0 Re: my rear defrost isn't working
The defroster relay is the one just to the left of the large metal case relay at top near center in the under hood fuse box.
When quiet you should be able to hear it and also feel it if you grab the case (have someone turn it on and off with key at position II engine off.
You could try removing it and re-seating it. Also many of the relays in there have the same part # and could be interchanged (keep track of 2 that are swapped)
When quiet you should be able to hear it and also feel it if you grab the case (have someone turn it on and off with key at position II engine off.
You could try removing it and re-seating it. Also many of the relays in there have the same part # and could be interchanged (keep track of 2 that are swapped)
on the diagram thats on the cover, ill just follow the pictures LOL so i have to get the same relay, it may be the relay i have to see....
Re: my rear defrost isn't working
the thin wires on the window can easaly be damaged. did u have tint instaled and then removed it? could be it got damaged in the process. use an ohm meter and check each wire for an open.
also theres a antena amp in the passenger side C pillar. that went bad on my coupe and killed radio reception. it's basicly a switch that makes the rear defroster the radio antena when off. then feeds curent though it when on. try replacing that.
also theres a antena amp in the passenger side C pillar. that went bad on my coupe and killed radio reception. it's basicly a switch that makes the rear defroster the radio antena when off. then feeds curent though it when on. try replacing that.
Thread Starter
Registered!!
Joined: Jun 2005
Posts: 44
Likes: 0
Rep Power: 0 Re: my rear defrost isn't working
the thin wires on the window can easaly be damaged. did u have tint instaled and then removed it? could be it got damaged in the process. use an ohm meter and check each wire for an open.
also theres a antena amp in the passenger side C pillar. that went bad on my coupe and killed radio reception. it's basicly a switch that makes the rear defroster the radio antena when off. then feeds curent though it when on. try replacing that.
also theres a antena amp in the passenger side C pillar. that went bad on my coupe and killed radio reception. it's basicly a switch that makes the rear defroster the radio antena when off. then feeds curent though it when on. try replacing that.
35+ Years Driving Japanese Autos
iTrader: (1)
Joined: Mar 2005
Posts: 4,904
Likes: 14
Rep Power: 309 Re: my rear defrost isn't working
You could try swapping relays (quick, easy free)
Check for voltage at the connectors for the windows grid. One side should have voltage present (with defroster on) and the other side is grounded (just use caution working with the connectors on the glass and the grid lines)
Check for voltage at the connectors for the windows grid. One side should have voltage present (with defroster on) and the other side is grounded (just use caution working with the connectors on the glass and the grid lines)
Thread Starter
Registered!!
Joined: Jun 2005
Posts: 44
Likes: 0
Rep Power: 0 Re: my rear defrost isn't working
the relays are fine, and electric where are the power lines...its on the right side right in the trunk, i can see that there are lines there but its all bundled up...
35+ Years Driving Japanese Autos
iTrader: (1)
Joined: Mar 2005
Posts: 4,904
Likes: 14
Rep Power: 309 Re: my rear defrost isn't working
So... Do you have voltage and ground at the connectors going to the grid ??
Not sure of the wiring path used for them, But those wires should never flex or be moved much they should not be a problem.
The connectors at the grid may just need reseated or possibly cleaned a bit.
But I would be very careful with them !!
Not sure of the wiring path used for them, But those wires should never flex or be moved much they should not be a problem.
The connectors at the grid may just need reseated or possibly cleaned a bit.
But I would be very careful with them !!
Joined: Aug 2006
Posts: 2,978
Likes: 4
From: Charlotte
Rep Power: 292 Re: my rear defrost isn't working
you're not looking in the trunk. you need to pull the connectors off the window and check for power there.
Thread
Thread Starter
Honda Civic Forum
Replies
Last Post
ORskier
Mechanical Problems/Vehicle Issues and Fix-it Forum
2
May 3, 2015 12:54 PM
Braun
Mechanical Problems/Vehicle Issues and Fix-it Forum
0
Apr 23, 2015 09:03 PM
ashleymmackey
Mechanical Problems/Vehicle Issues and Fix-it Forum
6
Apr 18, 2015 09:48 PM
Pir8pete
General Honda Civic Forum Archive.
165
Mar 6, 2009 05:16 PM
