B2222

DTC B2222 PBD PULSE SENSOR MALFUNCTION

CIRCUIT DESCRIPTION

DTC Detection Condition:

- A pulse sensor is built into the power back door drive unit for 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 where the back door is. 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 will be switched to manual operation mode (not electrically controlled) and can be moved freely.
- 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).

NOTE: The power back door ECU records the back door positions in the memory. In the case where any of the batteries, fuses, power back door ECU and power back door drive unit are removed and then reinstalled, the power back door ECU loses the memory of the door positions. In such a case, resetting the power back door system is necessary. Please refer to the resetting operation specified.

Wiring Diagram:

Step 1:

Step 2:

INSPECTION PROCEDURE