Rear Power Seat Control System - Diagnostics: Inspection

INSPECT POWER SEAT MOTOR

Check operation of the reclining motor.
1. Check if the motor rotates smoothly when the battery is connected to the reclining motor connector terminals.

OK:

MEASUREMENT CONDITION AND SPECIFIED CONDITION

Measurement Condition	Specified Condition
Battery positive (+) --> 1 Battery negative (-) --> 2	Clockwise
Battery positive (+) --> 2 Battery negative (-) --> 1	Counterclockwise

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

Fig 1: Checking Operation Of Reclining Motor

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

INSPECT POWER SEAT MOTOR

Check operation of the headrest motor.
1. Check if the motor rotates smoothly when the battery is connected to the headrest motor connector terminals.

OK:

MEASUREMENT CONDITION AND SPECIFIED CONDITION

Measurement Condition	Specified Condition
Battery positive (+) --> 5 (UP) Battery negative (-) --> 1 (DOWN)	Clockwise
Battery positive (+) --> 1 (UP) Battery negative (-) --> 5 (DOWN)	Counterclockwise

Fig 2: Checking Operation Of Headrest Motor

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

INSPECT REAR SEAT MEMORY SWITCH LH

Measure the resistance between the terminals when the switch is operated.

Standard:

TESTER CONNECTION AND SPECIFIED CONDITION

Tester Connection	Switch Condition	Specified Condition
1 (SGND) - 7 (SET)	SET switch free	10 kΩ or higher
1 (SGND) - 7 (SET)	SET switch pushed	Below 1 Ω
1 (SGND) - 5 (M)	M switch free	10 kΩ or higher
1 (SGND) - 5 (M)	M switch pushed	Below 1 Ω
1 (SGND) - 2 (CAN)	C switch free	10 kΩ or higher
1 (SGND) - 2 (CAN)	C switch pushed	Below 1 Ω

If the result is not as specified, replace the switch.

Fig 3: Inspecting Rear Seat Memory Switch LH

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

INSPECT REAR SEAT MEMORY SWITCH RH

Measure the resistance between the terminals when the switch is operated.

Standard:

TESTER CONNECTION AND SPECIFIED CONDITION

Tester Connection	Switch Condition	Specified Condition
8 (SGND) - 2 (SET)	SET switch free	10 kΩ or higher
8 (SGND) - 2 (SET)	SET switch pushed	Below 1 Ω
8 (SGND) - 4 (M)	M switch free	10 kΩ or higher
8 (SGND) - 4 (M)	M switch pushed	Below 1 Ω
8 (SGND) - 7 (CAN)	C switch free	10 kΩ or higher
8 (SGND) - 7 (CAN)	C switch pushed	Below 1 Ω

Fig 4: Inspecting Rear Seat Memory Switch Rh

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

If the result is not as specified, replace the switch.

INSPECT VIBRATOR LH

Measure the resistance between the terminals.

Standard:

TESTER CONNECTION AND SPECIFIED CONDITION

Tester Connection	Specified Condition
1*1 (C2)-2(C1)	1.8 +/- 0.3 Ω
1 (C2) and 2*2 (C1) - Body ground	5 MΩ or more at DC 500 VM
3 (C3) - Body ground	0Ω

Fig 5: Inspecting Vibrator LH

HINT:

*1: Connect terminal 1 to the tester's positive (+) terminal.

*2: Terminals 1 and 2 should be connected together.

If the result is not as specified, replace the vibrator.

INSPECT VIBRATOR RH

Measure the resistance between the terminals.

Standard:

TESTER CONNECTION AND SPECIFIED CONDITION

Tester Connection	Specified Condition
1*1 (C2)-2(C1)	1.8 +/- 0.3 Ω
1 (C2) or 2*2 (C1) - Body ground	5 MΩ or more at DC 500 VM
3 (C3) - Body ground	0Ω

HINT:

*1: Connect terminal 1 to the tester's positive (+) terminal.

*2: Terminals 1 and 2 should be connected together.

If the result is not as specified, replace the vibrator.

Fig 6: Inspecting Vibrator RH