B2221

DTC B2221 JAM PROTECTION PULSE SENSOR CIRCUIT ON BACK DOOR

AUTO UP/DOWN FUNCTION DOES NOT OPERATE

CIRCUIT DESCRIPTION

DTC Detection Condition:

The back door ECU monitors the condition of the power window motor and detects the position of the door glass by using pulse signals output from the 2 pulse sensors in the power window motor.

FAIL-SAFE
If the pulse sensor in the back door power window motor malfunctions (DTC B2221 is output), the power window functions will be restricted:
- The AUTO UP/ DOWN function is disabled.
- The MANUAL DOWN function via the transmitter is disabled.
- The MANUAL UP/DOWN function via the back door power window switch can be performed (the ignition switch ON).
- The MANUAL UP/DOWN function via the back door lock key cylinder can be performed (the ignition switch ON).

Wiring Diagram:

Step 1 - 2:

INSPECTION PROCEDURE