rear heater not working
10-13-2010, 01:04 PM
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rear heater not working
On my 92 4runner, the rear heater is not working. No power to it. Any ideas? Where is the fuse and the relay located? Can't seem to find anything about it on any of the searches.....
10-13-2010, 04:40 PM
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Relay Block #3 located under the right kick panel. Relay is top left looking at the block. The rear heater is fed off of the 20 amp heater fuse bottom left! (the 40amp is for the front heater) There is also a resistor in this circuit, this is how you get the two speeds and it will be located under the center console close to the heater and the 2 speed switch. If the 20 amp fuse is blown first check the resistor, it's probably shorted to ground. If the 20 amp fuse is intact and the heater still doesn't work, the coil side of the relay is fed off of the 10a. gauge fuse via the integration relay. Are there any other circuits not working? A faulty integration relay (underside of Junction Block #1 under left kick panel) can affect other circuits also.
Last edited by Hadmatt54; 10-13-2010 at 04:42 PM.
10-14-2010, 06:39 AM
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The only other issue I have is w/ the cruise control. Dash light shows that it is on, but it does not work. Everything else seems to be working fine. I don't think the two are related...
Hadmatt, thanks for the info, I will be pulling the right (passenger side) kick panel off and checking the relay and the fuses. I pulled the center console and did not see any problems. Just no power to the blower.
Hadmatt, thanks for the info, I will be pulling the right (passenger side) kick panel off and checking the relay and the fuses. I pulled the center console and did not see any problems. Just no power to the blower.
10-14-2010, 07:00 AM
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Relay Block #3 located under the right kick panel. Relay is top left looking at the block. The rear heater is fed off of the 20 amp heater fuse bottom left! (the 40amp is for the front heater) There is also a resistor in this circuit, this is how you get the two speeds and it will be located under the center console close to the heater and the 2 speed switch. If the 20 amp fuse is blown first check the resistor, it's probably shorted to ground. If the 20 amp fuse is intact and the heater still doesn't work, the coil side of the relay is fed off of the 10a. gauge fuse via the integration relay. Are there any other circuits not working? A faulty integration relay (underside of Junction Block #1 under left kick panel) can affect other circuits also.
10-20-2010, 07:00 AM
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Relay Block #3 located under the right kick panel. Relay is top left looking at the block. The rear heater is fed off of the 20 amp heater fuse bottom left! (the 40amp is for the front heater) There is also a resistor in this circuit, this is how you get the two speeds and it will be located under the center console close to the heater and the 2 speed switch. If the 20 amp fuse is blown first check the resistor, it's probably shorted to ground. If the 20 amp fuse is intact and the heater still doesn't work, the coil side of the relay is fed off of the 10a. gauge fuse via the integration relay. Are there any other circuits not working? A faulty integration relay (underside of Junction Block #1 under left kick panel) can affect other circuits also.
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