Power Seat Motor: Testing and Inspection

INSPECT SLIDE MOTOR OPERATION




a. Connect the positive (+) lead from the battery to terminal 1 and the negative (-) lead to terminal 2, check that the motor turns counterclockwise.




b. Reverse the polarity, check that the motor turns clockwise.

If operation is not as specified, replace the seat adjuster.

INSPECT SLIDE MOTOR PTC THERMISTOR OPERATION




a. Connect the positive (+) lead from the battery to terminal 1, the positive (+) lead from the ammeter to terminal 2 and the negative (-) lead to the battery negative (-) terminal, then move the seat cushion to the front position.
b. Continue to apply voltage, check that current changes to less than 1 ampere within 4 to 90 seconds.




c. Disconnect the leads from terminals.
d. Approximately 60 seconds later, connect the positive (+) lead from the battery to terminal 2 and the negative (-) lead to terminal 1, check that the seat cushion begins to move backwards.

If operation is not as specified, replace the seat adjuster.

INSPECT FRONT VERTICAL MOTOR OPERATION




a. Connect the positive (+) lead from the battery to terminal 4 and the negative (-) lead to terminal 5, check that the motor turns counterclockwise.




b. Reverse the polarity, check that the motor turns clockwise.

If operation is not as specified, replace the seat adjuster.




INSPECT FRONT VERTICAL MOTOR PTC THERMISTOR OPERATION
a. Connect the positive (+) lead from the battery to terminal 4, the positive (+) lead from the ammeter to terminal 5 and the negative (-) lead to the battery negative (-) terminal, then move the seat cushion to the highest position.
b. Continue to apply voltage, check that the current changes to less than 1 ampere within 4 to 90 seconds.




c. Disconnect the leads from the terminals.
d. Approximately 60 seconds later, connect the positive (+) lead from the battery to terminal 5 and the negative (-) lead to terminal 4, check that the seat cushion begins to descend.

If operation is not as specified, replace the seat adjuster.

INSPECT REAR VERTICAL MOTOR OPERATION




a. Connect the positive (+) lead from the battery to terminal 3 and the negative (-) lead to terminal 6, check that the motor turns counterclockwise.




b. Reverse the polarity, check that the motor turns clockwise.

If operation is not as specified, replace the seat adjuster.

INSPECT REAR VERTICAL MOTOR PTC THERMISTOR OPERATION




a. Connect the positive (+) lead from the battery to terminal 3, the positive (+) lead from the ammeter to terminal 6 and the negative (-) lead to the battery negative (-) terminal, then move the seat cushion to the highest position.
b. Continue to apply voltage, check that the current changes to less than 1 ampere within 4 to 90 seconds.




c. Disconnect the leads from the terminals.
d. Approximately 60 seconds later, connect the positive (+) lead from the battery to terminal 6 and the negative (-) lead to terminal 3, check that the seat cushion begins to descend.

If operation is not as specified, replace the seat adjuster.

INSPECT RECLINING MOTOR OPERATION




a. Connect the positive (+) lead from the battery to terminal 2 and the negative (-) lead to terminal 1, check that the motor turns counterclockwise.




b. Reverse the polarity, check that the motor turns clockwise.

If operation is not as specified, replace the seat adjuster.

INSPECT RECLINING MOTOR PTC THERMISTOR OPERATION




a. Connect the positive (+) lead from the battery to terminal 1, the positive (+) lead from the ammeter to terminal 2 and the negative (-) lead to the battery negative (-) terminal, then recline the seat back to the most forward position.
b. Continue to apply voltage, check that the current changes to less than 1 ampere within 4 to 90 seconds.




c. Disconnect the leads from the terminals.
d. Approximately 60 seconds later, connect the positive (+) lead from the battery to terminal 2 and the negative (-) lead to terminal 1, check that the seat back starts to fall backward.

If operation is not as specified, replace the seat adjuster.

Using an ammeter:
INSPECT DRIVER'S DOOR PTC THERMISTOR OPERATION




a. Connect the negative (-) lead from the battery to terminal 2.
b. Connect the positive (+) lead from the ammeter to terminal 1 and the negative (-) lead to battery negative (-) terminal, and check that the current changes from approximately 3.2 A to less than 0.5 A within 20 to 70 seconds.




c. Disconnect the leads from terminals.
d. Approximately 60 seconds later, connect the positive (+) lead from the battery to terminal 2 and the negative (-) lead to terminal 1, and check that the door lock moves to the LOCK position.

If operation is not as specified, replace the door lock assembly.

Using an ammeter:
INSPECT PASSENGER'S DOOR PTC THERMISTOR OPERATION




a. Connect the negative (-) lead from the battery to terminal 6.
b. Connect the positive (+) lead from the ammeter to terminal 5 and the negative (-) lead to battery negative (-) terminal, and check that the current changes from approximately 3.2 A to less than 0.5 A within 20 to 70 seconds.




c. Disconnect the leads from terminals.
d. Approximately 60 seconds later, connect the positive (+) lead from the battery to terminal 6 and the negative (-) lead to terminal 5, and check that the door lock moves to the LOCK position.

If operation is not as specified, replace the door lock assembly.

Using an ammeter with a current-measuring probe:
INSPECT DRIVER'S DOOR PTC THERMISTOR OPERATION




a. Connect the positive (+) lead from the battery to terminal 1 and the negative (-) lead to terminal 2.
b. Attach a current-measuring probe to either the positive (+) lead or the negative (-) lead, and check that the current changes from approximately 3.2 A to less than 0.5 A within 20 to 70 seconds.




c. Disconnect the leads from terminals.
d. Approximately 60 seconds later, reverse the polarity, and check that the door lock moves to the LOCK position.

If operation is not as specified, replace the door lock assembly.

Using an ammeter with a current-measuring probe:
INSPECT PASSENGER'S DOOR PTC THERMISTOR OPERATION




a. Connect the positive (+) lead from the battery to terminal 5 and the negative (-) lead to terminal 6.
b. Attach a current-measuring probe to either the positive (+) lead or the negative (-) lead, and check that the current changes from approximately 3.2 A to less than 0.5 A within 20 to 70 seconds.




c. Disconnect the leads from terminals.
d. Approximately 60 seconds later, reverse the polarity, and check that the door lock moves to the LOCK position.

If operation is not as specified, replace the door lock assembly.