Section 212 (Power Back Door System): Inspection

WARNING: This page is about a different car, the 2004 Toyota Sienna. However, it is still accessible from the selected car via links, so may be relevant.

INSPECT POWER BACK DOOR MAIN SWITCH

Inspect the resistance of the main switch.

Standard:

POWER BACK DOOR MAIN SWITCH SPECIFICATIONS

Terminal No.	Condition	Specified Condition
4 - 5	Free (ON)	Below 1 Ω
4 - 5	Pushed (OFF)	10 kΩ or higher

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

Apply battery voltage and check the illuminates.

Standard:

BATTERY SPECIFICATIONS

Measurement Condition	Specified Condition
Battery positive (+) --> Terminal 1 Battery negative (-) --> Terminal 2	Illuminates

NOTE: Whether the switch illuminates or not will not affect the function of the LH side.

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

Fig 1: Inspecting Power Back Door Main Switch

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

INSPECT SATELLITE SWITCH

Inspect the resistance of the back door switch.

Standard:

SATELLITE SWITCH SPECIFICATIONS

Terminal No.	Condition	Specified Condition
3 - 5	Free (OFF)	10 kΩ or higher
3 - 5	Pushed (ON)	Below 1 Ω

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

Apply battery voltage and check whether the switch illuminates.

Standard:

BATTERY VOLTAGE SPECIFICATIONS

Measurement Condition	Specified Condition
Battery positive (+) --> Terminal 8 Battery negative (-) --> Terminal 7	Illuminates

NOTE: Whether the switch illuminates or not will not affect the function of the RH side.

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

Fig 2: Inspecting Satellite Switch

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

INSPECT BACK DOOR OPENER SWITCH

Inspect the resistance of the switch.

Standard:

BACK DOOR OWNER SWITCH SPECIFICATIONS

Terminal No.	Condition	Specified Condition
1 - 2	Free	10 kΩ or higher
1 - 2	Pushed	Below 1 Ω

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

Fig 3: Inspecting Back Door Owner Switch

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

INSPECT POWER BACK DOOR TOUCH SENSOR LH

Check the resistance of the sensor.

Standard:

POWER BACK DOOR TOUCH SENSOR LH SPECIFICATIONS

Terminal No.	Condition	Specified condition
1 - 2	Free	Approx. 1 kΩ
1 - 2	Pressed	Below 100 Ω

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

Fig 4: Inspecting Power Back Door Touch Sensor LH

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

INSPECT POWER BACK DOOR TOUCH SENSOR RH

Check the resistance of the sensor.

Standard:

POWER BACK DOOR TOUCH SENSOR RH SPECIFICATIONS

Terminal No.	Condition	Specified condition
1 - 2	Free	Approx. 1 kΩ
1 - 2	Pressed	Below 100 Ω

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

Fig 5: Inspecting Power Back Door Touch Sensor RH

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

INSPECT POWER BACK DOOR DRIVE UNIT

Remove the unit.

Apply battery voltage to the terminals and check the motor operation.

Standard:

POWER BACK DOOR DRIVE UNIT SPECIFICATIONS

Measurement Condition	Specified Condition
Battery positive (+) --> Terminal 8 Battery negative (-) --> Terminal 7	Open
Battery positive (+) --> Terminal 7 Battery negative (-) --> Terminal 8	Close

If the result is not as specified, replace the drive unit.

Check the resistance of the clutch terminals.

Standard:

TERMINALS SPECIFICATIONS

Terminal No.	Specified Condition
3 - 9	4.0 Ω

If the result is not as specified, replace the drive unit.

Reinstall the unit with the connector connected.

Fig 6: Inspecting Power Back Door Drive Unit
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Check the pulse of the pulse sensor.

Using an oscilloscope, check the pulse generated when the door is manually opened and closed.

Standard (Reference):

PULSE SENSOR SPECIFICATIONS

Terminal	1 - 2, 2 - 5
Tool setting	10 V/DIV., 10 ms/DIV.
Vehicle condition	Door moving

If the result is not as specified, replace the drive unit.

NOTE: A cycle of the pulse changes between approx. 10 to 20 msec. according to the speeds that the slide door is moving.

Fig 7: Checking Pulse Of Pulse Sensor

With the connector connected, check the voltage of the terminals of the power back door drive unit connector.

POWER BACK DOOR WARNING BUZZER

Check the resistance of the buzzer.

Standard:

BACK DOOR WARNING BUZZER SPECIFICATIONS

Terminal No.	Specified Condition
1 - 2	Approx. 1 kΩ

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

NOTE:

The circuit that causes the buzzer to sounds is built into the back door ECU, not around the buzzer.
Directly applying battery voltage to the buzzer does not cause the buzzer to sound.

Fig 8: Identifying Power Back Door Warning Buzzer