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Home >> Lexus >> 1997 >> LX 450 L6-4.5L (1FZ-FE) >> Repair and Diagnosis >> Wiper and Washer Systems >> Wiper Motor >> Testing and Inspection
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Wiper Motor: Testing and Inspection


1. INSPECT FRONT WIPER MOTOR OPERATION





Low Speed:
Connect the positive (+) lead from the battery to terminal 3 and negative (-) lead to terminal 1, and check that the motor operates at low speed.
If operation is not as specified, replace the motor.





High Speed:
Connect the positive (+) lead from the battery to terminal 2 and the negative (-) lead to terminal 1, and check that the motor operates at high speed.
If operation is not as specified, replace the motor.





Stopping at Stop Position:
a. Operate the motor at low speed and stop the motor operation anywhere except at the stop position by disconnecting positive (+) lead from terminal 3.





b. Connect terminal 3 and 5.
c. Connect the positive (+) lead from the battery to terminal 6 and the negative (-) lead to terminal 1 and check that the motor stops running at the stop position after the motor operates again.
If operation is not as specified, replace the motor.

Terminal Identification:




Reference:





2. INSPECT FRONT WIPER MOTOR CIRCUIT
Disconnect the connector from the motor and inspect the connector on the wire harness side, as shown.
If the circuit is not as specified, inspect the circuits connected to other parts.

3. INSPECT REAR WIPER MOTOR OPERATION





Low Speed:
Connect the positive (+) lead from the battery to terminal 3 and negative (-) lead to terminal 2, and check that the motor operates at low speed.
If operation is not at specified, replace the motor.

Stopping at Stop Position:





a. Operate the motor at low speed and stop the motor operation anywhere except at the stop position by disconnecting positive (+) lead from terminal 3.





b. Connect terminal 3 and 4.
c. Connect the positive (+) lead from the battery to terminal 1 and the negative (-) lead to terminal 2, and check that the motor stops running at the stop position after the motor operates again.
If operation is not as specified, replace the motor.

Terminal Identification:




Reference:





4. INSPECT REAR WIPER MOTOR CIRCUIT
Disconnect the connector from the motor and inspect the connector on the wire harness side, as shown.
If the circuit is not as specified, inspect the circuits connected to other parts.

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