Toyota Tundra Service Manual: Inspection

(a) Check the LO operation.

(1) Connect the positive (+) battery lead to terminal 1 (+1) of the connector and the negative (-) battery lead to terminal 5 (E), and check that the motor operates at low speed (LO).

OK:

Motor operates at low speed (LO).

If the result is not as specified, replace the motor assembly.

(c) Check the automatic stop operation.

(1) Connect the positive (+) battery lead to terminal 1 (+1) of the connector and the negative (-) battery lead to terminal 5 (E). With the motor operating at low speed (LO), disconnect terminal 1 (+1) to stop the wiper motor operation at any position other than the automatic stop position.

(2) Using SST, connect terminals 3 (+S) and 1 (+1). Then connect the positive (+) battery lead to terminal 2 (B) of the connector to restart the motor operation at low speed (LO).

SST: 09843-18040

(3) Check that the motor stops automatically at the automatic stop position.

OK:

Automatically stops.

If the result is not as specified, replace the motor assembly.