Toyota 81980-12070 Flasher Assy, Turn Signal

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The flasher unit on T100 models is located under the instrument panel, behind the lower left finish panel, while on Tacoma and 4Runner models, it can be found in the passenger compartment fuse/relay block. A properly functioning flasher unit produces an audible click during operation; if turn signals fail on one side and the flasher does not click, a faulty turn signal bulb is likely. If both turn signals do not blink, the issue may stem from a blown turn signal fuse in the passenger compartment fuse box, a faulty flasher unit, a broken switch, or a loose connection. Before replacing a blown fuse, check the wiring for a short. To replace the flasher on a T100, remove the left lower finish panel and unplug the flasher, while for Tacoma or 4Runner models, simply unplug it from the passenger compartment fuse block. Ensure the replacement unit matches the original before installation, which follows the reverse of removal. For the hazard warning switch, pry it out of the dash and unplug it, then use an ohmmeter to check continuity between terminals 2 and 3 for the illumination circuit, and between terminals 7 and 10 when the switch is off, as well as between terminals 5, 6, and 9, and between terminals 7 and 8 when the switch is on. If the switch does not operate correctly, it should be replaced.

Various electrical accessories within the vehicle, such as the fuel injection system, horns, starter, air conditioning/heating system, and fog lights, utilize relays to transmit electrical signals to the respective components. Relays function by utilizing a low-current control circuit to open and close a high-current power circuit. A defective relay can result in improper component operation. These relays are typically situated in engine compartment fuse/relay boxes. In case of suspected relay malfunction, they can be removed and tested. Faulty relays need to be replaced as a complete unit. To test relays, usually marked for identification, it's important to recognize the control circuit terminals (connected to the relay coil) and the power circuit terminals (connected when the control circuit coil is energized). Fused jumper wires are used to connect the control circuit terminals to the positive battery terminal and the ground. A functional relay should click with these connections. Continuity checks are then performed between the power circuit terminals, following the relay markings. If any of the tests fail, the relay should be replaced.

The turn signal and hazard flasher are housed within a compact, canister-shaped unit situated in the relay center under the dashboard near the steering column. When functioning correctly, the flasher emits an audible clicking sound during its operation. If turn signals fail on one side and the characteristic clicking is absent, a faulty turn signal bulb is likely. If both turn signals do not blink, potential causes include a blown fuse, a malfunctioning flasher unit, a broken switch, or a loose/open connection. If a visual inspection of the fuse box reveals a blown turn signal fuse, check for wiring shorts before replacing the fuse. To replace the flasher, pull it out of its holder and unplug it, ensuring the replacement unit matches the original. Installation involves reversing the removal process.

The flasher unit on T100 models is located under the instrument panel, behind the lower left finish panel, while on Tacoma and 4Runner models, it can be found in the passenger compartment fuse/relay block. A properly functioning flasher unit produces an audible click during operation; if turn signals fail on one side and the flasher does not click, a faulty turn signal bulb is likely. If both turn signals do not blink, the issue may stem from a blown turn signal fuse in the passenger compartment fuse box, a faulty flasher unit, a broken switch, or a loose connection. Before replacing a blown fuse, check the wiring for a short. To replace the flasher on a T100, remove the left lower finish panel and unplug the flasher, while for Tacoma or 4Runner models, simply unplug it from the passenger compartment fuse block. Ensure the replacement unit matches the original before installation, which follows the reverse of removal. For the hazard warning switch, pry it out of the dash and unplug it, then use an ohmmeter to check continuity between terminals 2 and 3 for the illumination circuit, and between terminals 7 and 10 when the switch is off, as well as between terminals 5, 6, and 9, and between terminals 7 and 8 when the switch is on. If the switch does not operate correctly, it should be replaced.

Relays use a low-current circuit (the control circuit) to open and close a high-current circuit (the power circuit).

A faulty turn signal bulb is indicated if the turn signals fail on one side and the flasher unit does not click.

Relays are used to transmit electrical signals to various components in the vehicle, such as the fuel injection system, horns, starter, and fog lamps. They utilize a low-current circuit (the control circuit) to open and close a high-current circuit (the power circuit).

Make sure that the replacement unit is identical to the original. Compare the old one to the new one before installing it.

The various relays are mounted in several locations throughout the vehicle.

When the flasher unit is functioning properly, an audible click can be heard during its operation.

If the relay is defective, that component will not operate properly.

Installation is basically the reverse of removal. Be sure to push in the terminals of the electrical wire harness for the switch you are replacing until each one is securely locked in the connector.

If the relay doesn't click, try swapping the jumper wires on the control circuit terminals, as polarity may be critical for some relays.

Relays are used to transmit electrical signals to various components in the vehicle, such as the fuel injection system, horns, starter, air conditioning/heating system, and fog lights.

When the flasher unit is functioning properly, an audible click can be heard during its operation.

The relays are usually marked to help identify which terminals are for the control circuit and which are for the power circuit, often with a schematic molded into the relay cover.

If the turn signals fail on one side and the flasher unit does not make its characteristic clicking sound, it indicates a faulty turn signal bulb.

81980-32010 CORRECT WITH VIN