Contents: Examination ↓ Replacement ↓
Presence of voltage on the electric motor
When voltage is applied to terminal 5 (ground – terminal 4), the electric motor should rotate at low speed, and when voltage is applied to terminal 3, at high speed.
Examination
Caution! Before performing the test, locate the location of the relevant wires using the diagram (see Fig. subsection 12.2.17.). Keep in mind that the power wires are brighter in color and have a larger diameter than the ground wires.
If the wiper blades move too slowly, check the battery condition. If the battery is charged, remove the windshield wiper motor and check the freedom of movement of the wipers by hand. If necessary, lubricate all hinge joints or repair them. If this measure does not produce results, check the condition of the contacts, especially the ground connections. If all connections are normal, replace the motor.
If the windshield wiper does not work, check the fuse. If the fuse is good, connect the electric motor to ground with a separate jumper. If the electric motor turns on, repair the ground connection. Otherwise, turn on the windshield wiper and disconnect the electric motor connector.
Check for voltage on the electric motor (see fig. Presence of voltage on the electric motor). If there is voltage, check the electric motor by connecting it to the battery through a thin wire. If the electric motor turns on, check the freedom of movement of the rod. Otherwise, replace the electric motor. If there is no voltage on the electric motor, check the voltage at the switch. If there is no voltage at the switch, check the wiring from the fuse to the switch. If the wiring is good, the switch is faulty.
If the brushes only work at one speed, check the wiring and the circuit between the terminals of the electric motor. If the wiring is good, replace the switch.
If the brush frequency is not adjustable, check the wiring between the motor and the switch. If the wiring is OK, replace the controller.
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If the brushes do not return to the parked position when turned off, check the voltage at the electric motor with the ignition on and the wiper off. If there is voltage, the limit switch inside the electric motor is faulty. Replace the electric motor. If there is no voltage, check and repair the wiring between the fuse and the electric motor.
If the brushes continue to operate until the ignition is turned off, disconnect the connector from the switch. If the brushes stop, replace the switch. Otherwise, the limit switch inside the electric motor is faulty. Replace the electric motor.
If the brushes do not reach the parking position, check for obstructions and rod jamming. If everything is OK, check the wiring between the motor and the switch. If the wiring is OK, replace the motor.
Replacement
1. Remove the windshield frame trim and wiper arms.
2. For Camry and Solara models, remove the bolts (A) and disconnect the windshield wiper connector (B).
3. On Avalon models, remove the bracket (A), loosen the bolt (B) and disconnect the connector (C).
4. To remove the wiper linkage on Avalon models, remove the bolts shown.
5. Remove the electric motor with rods.
6. Loosen the bolts and remove the electric motor.
7. Installation is carried out in reverse order.