Checking the front seat adjustment switch

Check for continuity between the front seat adjustment switch connector pins

Fig. 1. Front seat adjustment switch connector

If the results are not as shown in the table, replace the switch.

Longitudinal adjustment

Output number

Position

switch

Result

1-94-6

Forward

conducted

6-4-9

Disabled

conducted

4-91-6

Back

conducted

Cushion adjustment (driver's seat)

If the results are not as shown in the table, replace the switch.

Output number

Position

switch

Result

1-10 4-5

Up

conducted

5-4-10

Disabled

conducted

1-5 4-10

Down

conducted

Cushion adjustment (passenger seat)

Output number

Position

switch

Result

1-7 4-8

Up

conducted

7-4-8

Disabled

conducted

1-84-7

Down

conducted

Seat back adjustment

Output number

Position

switch

Result

1-32-4

Forward

conducted

2-4-3

Disabled

conducted

1-2 3-4

Back

conducted

Checking the seat adjustment motors

Connect the battery to the terminals of the motor connector, check by changing the polarity of the voltage that the armature rotates in two directions.

Fig. 2. Seat Adjustment Motor Test Diagram

If the armature does not rotate in at least one direction, replace the motor.

Standard check

Polarity

Action

Battery (+) ─ 1

Battery (─) ─ 2

Counterclockwise

Battery (+) ─ 1

Battery (─) ─ 2

Clockwise

Checking thermal fuses

Connect the positive battery terminal to terminal "1", the positive ammeter wire to terminal "2", the negative ammeter wire to the negative battery terminal.

Turn on the motor to be tested, after stopping the seat in an extreme continue to apply voltage in this position.

Make sure the current drops to less than 1A in 4 to 90 seconds (fuse blows).

Disconnect the wires.

Approximately one minute later, apply reverse polarity voltage to the motor leads, the motor should turn on.

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