Fuse Box Location (Avalon)
The fuse box on Avalon vehicles is mounted under the instrument panel to the left of the steering column.
Relay and fuse box (Solara and Camry)
On Solara and Camry, a single relay and fuse box is located in the engine compartment. On Avalon, the relay and fuse boxes are separate.
Relay location
Some relays are mounted near the driver's side suspension cover.
In the vehicles under consideration, relays are included in the circuits of such consumers as fuel system units, starter, fog lights, and horn. Relays are used for controlled switching on and off of a high-current consumer under the influence of a low-power electrical signal. Relays are mounted in mounting blocks in the engine compartment. The relay can be removed and checked; a faulty relay is replaced. The relay marking is applied to its body or to the mounting block panel.
Examination
Terminal designations of a typical 4-pin relay
Non-standard 4-pin relay
Some 4-pin relays have terminals numbered 1,2,3 and 5, however, their purpose is exactly the same as in relays with terminals 1 - 4.
Terminal designations of a typical 5-pin relay
1. The most reliable results are obtained by testing using a relay connection diagram. If there is no connection diagram, then perform tests taking into account the following. A pair of terminals of any relay is connected to a coil that ensures the relay is triggered. The remaining terminals are closed or opened in pairs when the coil is energized. As a rule, the layout of the relay terminals is indicated on its body.
2. Connect one of the relay coil terminals to the positive terminal of the battery via a wire with a thin wire as a fuse. Connect the second terminal to ground. After connecting, a click should be heard. If there is no click, then reverse the polarity of the connection (which must be observed on some relays).
3. Check for continuity between the relay terminals in accordance with the marking on the housing.
4. If the test results are negative, replace the relay.