Toyota Sienna Service Manual: PBD Pulse Sensor Malfunction
DTC B2222 PBD Pulse Sensor Malfunction
DESCRIPTION
- A pulse sensor is built into the back door for a jam and foreign object detection and for back door position detection. The jam and foreign object detection feature of the pulse sensor monitors the operating speed of the back door while the power back door is in operation. The back door position detection feature of the pulse sensor monitors the back door location. If the back door position detection feature outputs a pulse signal that is out of the normal range, the power back door ECU will set DTC B2222.
- If DTC B2222 sets, the power back door system will be turned off. Thus, the back door can be moved freely and will be switched to manual operation mode (not electrically controlled).
- In order to restore the power back door system to normal operation mode, first solve the problem indicated by DTC B2222 and then manually close the back door fully (reset operation).
|
DTC No. |
DTC Detection Condition |
Trouble Area |
|
B2222 |
Power back door does not operate |
|
WIRING DIAGRAM
INSPECTION PROCEDURE
1 CHECK WIRE HARNESS (POWER BACK DOOR DRIVE UNIT - POWER BACK DOOR ECU)
- Disconnect the P12 unit and P13 ECU connectors.
- Check the resistance between the wire harness side connectors.
Resistance (Check for open circuit)
2 INSPECT POWER BACK DOOR DRIVE UNIT
- Remove the unit.
- Connect the battery positive (+) lead to terminal 3 and battery negative (-) terminal lead to terminal 9.
- Apply battery voltage to the terminals and check the motor operation.
OK
- Check the resistance of the clutch terminals.
Resistance
- Reinstall the unit with the connector connected.
- Check the pulse of the pulse sensor.
- Using an oscilloscope, check the pulse generated when the door is manually opened and closed.
Reference
HINT: A cycle of the pulse changes between approx. 10 to 20 msec. according to the speeds that the slide door is moving.
NOTICE: When disconnecting the drive unit, initialize the power back door system
REPLACE POWER BACK DOOR ECU
Diagnostic trouble code chart
If a malfunction code is displayed during the DTC check,
check the circuit listed for that code in the table below.
(Proceed to the page given for that circuit.)
POWER BACK DOOR SYSTEM
...
Power Back Door does not Operate
DESCRIPTION
The power back door operates only when the power back door main
switch is ON. The power back
door ECU controls the power back door by activating the back door motor
(built into ...
Other materials:
Using the mechanical key (vehicles with a smart key system)
To take out the mechanical key,
push the release button and take
the key out.
The mechanical key can only be
inserted in one direction, as the
key only has grooves on one side.
If the key cannot be inserted in a
lock cylinder, turn it over and reattempt
to insert it.
After using t ...
On-vehicle inspection
1. INSPECT CENTER AIRBAG SENSOR ASSEMBLY
(VEHICLE NOT INVOLVED IN COLLISION)
Perform a diagnosis system check.
2. INSPECT CENTER AIRBAG SENSOR ASSEMBLY
(VEHICLE INVOLVED IN COLLISION AND AIRBAG
HAS NOT DEPLOYED)
Perform a diagnosis system check.
3. INSPECT CENTER AIRBAG ...
Air Mix Damper Control Servo Motor Circuit (Driver Side)
DESCRIPTION
The air mix control servo motor (air mix damper servo sub-assembly) is
controlled by the A/C amplifier.
The air mix control servo motor moves the air mix damper by rotating (normal,
reverse) with electrical
power from the A/C amplifier.
This adjusts the mix ratio of the air t ...
