Washer motor does not operate

1. Pre-check and visual inspection

1) Verify that the wiper LO, HI, and INT or AUTO are normal.

2) Check for any interference from aftermarket electronic components such as two-way radios or lights.

Turn OFF or remove any aftermarket electronic components to ensure that there is no influence on inspections or operations.

2. Components inspection

1) Inspect the fuse.

If an abnormal condition such as a fuse blowout is found, inspect or repair the cause of the abnormal condition before replacing the fuse.

2) Inspect the wiper switch.

Refer to "9.Body, Cab, Accessories 9A.Lighting Systems combination switch inspection".

If a malfunction is found in the wiper switch, replace it.

Refer to "9.Body, Cab, Accessories 9A.Lighting Systems combination switch removal".

Refer to "9.Body, Cab, Accessories 9A.Lighting Systems combination switch installation".

3) Inspect the washer relay function.

If any abnormal conditions are found in the washer relay, replace it.

4) Inspect the washer motor.

Refer to "9.Body, Cab, Accessories 9B.Wiper, Washer Systems washer motor inspection".

If a malfunction is found in the washer motor, replace it.

Refer to "9.Body, Cab, Accessories 9B.Wiper, Washer Systems washer motor removal".

Refer to "9.Body, Cab, Accessories 9B.Wiper, Washer Systems washer motor installation".

5) Inspect the BCM.

Observe the DTC information, and replace the BCM if a malfunction is found.

Refer to "9.Body, Cab, Accessories 9Z.Body, Cab, Accessories Electrical Control BCM removal".

Refer to "9.Body, Cab, Accessories 9Z.Body, Cab, Accessories Electrical Control BCM installation".

Refer to "9.Body, Cab, Accessories 9Z.Body, Cab, Accessories Electrical Control BCM setting".

3. Circuit inspection

1) Check that the ground point is normal.

Repair or clean any ground points that are improperly installed or significantly dirty.

2) Check that the harnesses and connectors are normal.

Inspect for the following circuits for an open circuit, short, poor connections at the connectors, and abnormal conditions such as worn or bent harnesses.

Models with BCM

Models without BCM

Refer to "201.General Information 14A.Service Information Guide Preliminary and post procedures".