Front Power Seat Control System
Front Power Seat Control SystemON-VEHICLE INSPECTION
1. CHECK POWER SEAT FUNCTION
a. Check the basic function.
1. Check that each part functions properly (sliding, front vertical, lifter, reclining, lumbar support) when operating the power seat switches.
2. CHECK POWER SEAT MOTOR ASSEMBLY
a. Inspect the PTC operation inside the power seat motor assembly.
NOTICE:
- The inspection should be performed with the seat installed in the vehicle.
- Perform this inspection for every maximum position.
1. Move the seat to any of the maximum positions by operating the power seat switch, and keep the seat there for approximately 60 seconds.
2. Try to operate the power seat past the maximum position using the power seat switch and measure the time until the electrical current is shut off (motor operation sound will stop, inspection of current shut-off).
Standard: Approx. 4 to 90 seconds
3. Turn the power seat switch off after the inspection of current shut-off, and keep that condition for approximately 60 seconds.
4. Operate the power seat switch to move the seat to the opposite position and check that the motor operates.
3. CHECK LUMBAR SUPPORT ADJUSTER ASSEMBLY LH
a. Inspect the PTC operation inside the power seat motor.
NOTICE: The inspection should be performed with the seat installed to the vehicle.
1. Move the lumbar support to either the foremost or rearmost position by operating the lumbar support switch, and keep it there for approximately 60 seconds.
2. Try to move the lumbar support past the maximum position using the switch and measure the time until the electrical current is shut off (motor operation sound will stop, inspection of current shut-off).
Standard: Approx. 4 to 90 seconds
3. Turn the lumbar support switch off after the inspection of current shut-off, and keep that condition for approximately 60 seconds.
4. Operate the lumbar support switch to move the lumbar support to the opposite position and check that the motor operates.
4. CHECK MEMORY REACTIVATION FUNCTION (w/ Memory)
a. Turn the ignition switch ON and move the shift lever into the P range.
b. Move the seat into the foremost position and uppermost position using each seat switch.
c. Check that the buzzer sounds for 0.5 second and the seat position is recorded when the M1 switch is pressed while the SET switch is held down.
d. Move the seat out of the foremost position and uppermost position using each seat switch.
e. Check that the buzzer sounds for 0.5 second and the seat position is recorded when the M2 switch is pressed while the SET switch is held down.
f. Check that the buzzer sounds for 0.1 second and the seat automatically moves into the foremost position and uppermost position (set positions) when the M1 switch is pressed.
g. Check that the buzzer sounds for 0.1 second and the seat automatically moves out of the foremost position and uppermost position (set positions) when the M2 switch is pressed.
h. Check that the seat automatically moves into the set position when the M1 or M2 switch is pressed within 30 seconds after the ignition switch is turned OFF, the key is pulled out from the key cylinder and the driver side door is opened.
i. Move the seat into the maximum positions of the slide movement, and disconnect the negative terminal of the battery while the memory switch is pressed. Then leave the seat in the position for 3 minutes. The seat position memory will be erased.
j. Move the seat into all the maximum positions (front/ rear and up/down) using each seat switch.
k. Check that the seat does not move (the seat position is not recorded) when the M1 switch or the M2 switch is pressed, after the M1 switch 1 and M2 switch are pressed at one time while the SET switch is held down.
5. CHECK INITIALIZATION (w/ Memory)
a. When replacing the power seat switch (seat ECU), perform an initialization by moving the power seat into the foremost and uppermost position.
b. When replacing the D/C OUT fuse, perform an initialization by moving the power seat into the foremost and uppermost position.