B2221

WINDSHIELD / WINDOWGLASS: POWER WINDOW CONTROL SYSTEM: B2221: Jam Protection Pulse Sensor Circuit on Back Door

DTC B2221 - Jam Protection Pulse Sensor Circuit on Back Door

DESCRIPTION

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





INSPECTION PROCEDURE

PROCEDURE

1. RESET POWER WINDOW REGULATOR MOTOR ASSEMBLY
(a) Turn the ignition switch ON.
(b) Open the back door glass.
(c) Press the back door power window switch until the door glass is fully closed, and continue to hold the switch 1 second more even after the door glass is fully closed.
(d) Check that the AUTO UP/DOWN function operates normally.

NG -- CHECK WIRE HARNESS (BACK DOOR ECU - WINDOW MOTOR) (BACK DOOR ECU - BODY GROUND)
OK -- END
2. CHECK WIRE HARNESS (BACK DOOR ECU - WINDOW MOTOR) (BACK DOOR ECU - BODY GROUND)




(a) Disconnect the B9 ECU connector.
(b) Disconnect the B11 motor connector.
(c) Check the continuity between the wire harness side connectors.
Standard:





(d) Check the continuity between the B9 ECU connector and the body ground.
Standard:





NG -- REPAIR OR REPLACE HARNESS AND CONNECTOR
OK -- REPLACE POWER WINDOW REGULATOR MOTOR ASSEMBLY