Power Window Control System: Fail-Safe

CHECK POWER WINDOW FAIL-SAFE FUNCTION

HINT:

If there is a malfunction in the power window system, some of the power window functions will be disabled.

Driver side power window

FAIL-SAFE TABLE - DRIVER SIDE POWER WINDOW

Malfunctioning Part	Disabled Function	Operative Function
Pulse sensor circuit in power window motor	AUTO UP/DOWN function Power window operation function after ignition OFF	Manual UP (fully pulled UP position) Manual DOWN Remote (AUTO and manual) Remote function after ignition OFF (AUTO and manual) MANUAL UP/DOWN function via driver side door lock key cylinder MANUAL DOWN function via transmitter
CPU in power window master switch	AUTO UP/DOWN function Remote function (AUTO and manual) MANUAL UP/DOWN function via driver side door lock key cylinder MANUAL DOWN function via transmitter	Manual UP (fully pulled UP position) Manual DOWN

Power windows except driver side power window

FAIL-SAFE TABLE - POWER WINDOWS EXCEPT DRIVER SIDE POWER WINDOW

Malfunctioning Part	Disabled Function	Operative Function
Pulse sensor circuit in power window motor CPU In power window master switch Communication between master switch and each power window switch	AUTO UP/DOWN function Power window operation function after ignition OFF MANUAL UP/DOWN function via driver side door lock key cylinder MANUAL DOWN function via transmitter	Manual UP function (fully pulled UP position) Manual DOWN function

CHECK SWITCH CONDITION WITH INTELLIGENT TESTER
HINT:

DTC B1221 is output when switches of the power window master switch are on. When these switches are off, DTC B1221 is not output. Using this DTC, you can check whether these switches are normal or not.