A/F Heater Relay (RAV4, Tacoma, Tundra 3.4L V6)
WARNING: This page does not describe the selected car, but rather 17 other vehicles, including the 2003 Toyota Tundra, 2003 Toyota Tacoma, 2003 Toyota Sienna, 2003 Toyota Sequoia, and 2003 Toyota RAV4. However, it is still accessible from the selected car via links, so may be relevant.
A/F heater relay may also be referred to as A/F HTR relay, A/F sensor relay or A/F relay. Constant battery voltage is supplied from battery, through A/F heater fuse to one side of A/F heater relay. A/F heater fuse may also be referred to as A/F fuse. When EFI main relay is energized, voltage is supplied to other side of A/F heater relay and A/F heater relay is energized. When A/F heater relay is energized, A/F heater relay provides battery voltage to +B terminal at Air Fuel (A/F) sensors. For A/F heater relay location, see A/F HEATER RELAY LOCATION .
A/F HEATER RELAY LOCATION
| Application | Location | ||
|---|---|---|---|
| Avalon & Camry | In Fuse/Relay Box At Driver's Side Front Corner Of Engine Compartment | ||
| Camry Solara | In Small Fuse/Relay Box At Driver's Side Front Corner Of Engine Compartment, In Front Of Battery | ||
| Highlander | In Fuse/Relay Box At Driver's Side Front Corner Of Engine Compartment, Just In Front Of Strut Tower | ||
| RAV4, Tacoma, Tundra 4.3L V6 & 4Runner 4.0L V6 | In Fuse/Relay Box At Driver's Side Front Corner Of Engine Compartment | ||
| Sienna | (1) | ||
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