Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSTOYOTA2001HIGHLANDER 2WD L4-2.4L (2AZ-FE)REPAIR AND DIAGNOSISWIPER AND WASHER SYSTEMSWIPER MOTORTESTING AND INSPECTION
2001 Toyota Highlander 2WD L4-2.4L (2AZ-FE)
Wiper Motor: Testing and Inspection
2001 Toyota Highlander 2WD L4-2.4L (2AZ-FE)SECTION Testing and Inspection
WINDSHIELD WIPER MOTOR ASSEMBLY
a. LO Operation Check
1. Connect the positive (+) lead from the battery to terminal 1 (+1) and the negative (-) lead to terminal 5 (E), check that the motor operates at low speed.
b. HI Operation Check
1. Connect the positive (+) lead from the battery to terminal 4 (+2) and the negative (-) lead to terminal 5 (E), check that the motor operates at high speed.
c. Automatic Stop Operation Check
1. Connect the positive (+) lead from the battery to terminal 1 (+1) and the negative (-) lead to terminal 5 (E), operate the motor at low speed and stop the motor operation anywhere except at the stop position by disconnecting positive (+) lead from terminal 1 (+1).
2. Connect terminals 1 (+1) and 3 (S).
3. Connect the positive (+) lead from the battery to terminal 2 (B), check that the motor stops running at the stop position after the motor operates again.
REAR WIPER MOTOR ASSEMBLY
a. Operation Check
1. Connect the positive (+) lead from the battery to terminal 3 (+B) and the negative (-) lead to terminal 1 (LS), check that the motor operates.
NOTE: The body earth should be connected.
b. Automatic Stop Position Operation Check
1. Connect the positive (+) lead from the battery to terminal 3 (+B) and the negative (-) lead to terminal 1 (LS).
NOTE: The body earth should be connected.
2. With the motor being rotated, disconnect terminal 3 (+B) and terminal 1 (LS) to stop the motor operation at any position except the automatic stop position.
3. Connect the positive (+) lead from the battery to terminal 3 (+B), check that the motor is restarted and automatically stopped.
a. LO Operation Check
1. Connect the positive (+) lead from the battery to terminal 1 (+1) and the negative (-) lead to terminal 5 (E), check that the motor operates at low speed.
b. HI Operation Check
1. Connect the positive (+) lead from the battery to terminal 4 (+2) and the negative (-) lead to terminal 5 (E), check that the motor operates at high speed.
c. Automatic Stop Operation Check
1. Connect the positive (+) lead from the battery to terminal 1 (+1) and the negative (-) lead to terminal 5 (E), operate the motor at low speed and stop the motor operation anywhere except at the stop position by disconnecting positive (+) lead from terminal 1 (+1).
2. Connect terminals 1 (+1) and 3 (S).
3. Connect the positive (+) lead from the battery to terminal 2 (B), check that the motor stops running at the stop position after the motor operates again.
REAR WIPER MOTOR ASSEMBLY
a. Operation Check
1. Connect the positive (+) lead from the battery to terminal 3 (+B) and the negative (-) lead to terminal 1 (LS), check that the motor operates.
NOTE: The body earth should be connected.
b. Automatic Stop Position Operation Check
1. Connect the positive (+) lead from the battery to terminal 3 (+B) and the negative (-) lead to terminal 1 (LS).
NOTE: The body earth should be connected.
2. With the motor being rotated, disconnect terminal 3 (+B) and terminal 1 (LS) to stop the motor operation at any position except the automatic stop position.
3. Connect the positive (+) lead from the battery to terminal 3 (+B), check that the motor is restarted and automatically stopped.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.