Power Seat Control System: Inspection

INSPECT DRIVER'S SEAT SWITCH CONTINUITY

Slide switch:

Fig 1: Inspecting Driver Seat Switch Continuity

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

SLIDE SWITCH SPECIFIED CONDITION

Switch Position	Tester Connection	Specified Condition
FRONT	2-11, 4-7	Continuity
OFF	4-11, 4-7	Continuity
BACK	2-7, 4-11	Continuity

Left switch:

LEFT SWITCH SPECIFIED CONDITION

Switch Position	Tester Connection	Specified Condition
UP	2-5, 4-8	Continuity
OFF	4-5, 4-8	Continuity
DOWN	2-8, 4-5	Continuity

Reclining switch:

RECLINING SWITCH SPECIFIED CONDITION

Switch Position	Tester Connection	Specified Condition
FORWARD	2-12, 4-6	Continuity
OFF	4-12, 4-6	Continuity
REAR	2-6, 4-12	Continuity

If continuity is not as specified, replace the switch.

INSPECT SLIDE MOTOR OPERATION

Fig 2: Inspecting Slide Motor Operation
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
1. Connect the positive (+) lead from the battery to terminal 3 and the negative (-) lead to terminal 2, check that the motor turns counterclockwise.
2. Reverse the polarity, check that the motor turns clockwise.
  If operation is not as specified, replace the seat adjuster.
INSPECT LIFTER MOTOR OPERATION

Fig 3: Inspecting Lifter Motor Operation
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
1. Connect the positive (+) lead from the battery to terminal 1 and the negative (-) lead to terminal 4, check that the motor turns counterclockwise.
  
  Fig 4: Identifying Lifter Motor Terminals
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Reverse the polarity, check that the motor turns clockwise.
  If operation is not as specified, replace the seat adjuster.
OPERATION CHECK FOR PTC IN POWER SEAT MOTOR
NOTE: Check should be conducted with the power seat motor attached to the adjuster.
1. Slide the seat as much as to the front or the back, and to the top bottom with the power seat switch.
  Wait for about 60 seconds.
2. Operate the power seat switch to the same directions and check the time it takes to shut-off the electric current (Motor operation sound stops.).
  Standard time to shut-off; about 4 - 40 seconds.
3. Wait for about 60 seconds after finishing the shut-off check, then operate the power seat switch to the opposite directions and make sure that the power seat motor functions.
  If operation is not as specified, replace the seat adjuster.
INSPECT RECLINING MOTOR PTC THERMISTOR OPERATION

Fig 5: Inspecting Reclining Motor PTC Thermistor Operation
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
1. Connect the positive (+) lead from the battery to terminal 5 and the negative (-) lead to the terminal 6, check that the motor turns counterclockwise.
2. Reverse the polarity, check that the motor turns clockwise.
  If operation is not as specified, replace the seat adjuster.