B2212

DTC B2212

CIRCUIT DESCRIPTION
The switch or circuit that failed and generated this diagnostic trouble code (DTC) is one of the power window switches or circuits that are built into the driver door switch assembly (DDSA). Power and ground for the switch contacts is internally supplied by the DDSA. Except for the power door serial data circuit, there are no external circuits concerned with power window operation from the DDSA. The DDSA contains a microprocessor which interprets the signals generated by the switches and assigns them a digital message. The DDSA then sends this message over the power door serial data circuit to the driver door module (DDM). The switches are not serviced separately.

CONDITIONS FOR RUNNING THE DTC
The DDM must be powered and must not have DTCs B1327-Battery Low Voltage or B1328-Battery High Voltage set for this DTC to set.

CONDITIONS FOR SETTING THE DTC
If the driver door module (DDM) receives the message that a DDSA window switch is closed for more than 15 continuous seconds the DDM sets this DTC.

ACTION TAKEN WHEN THE DTC SETS
- If the UP switch is closed for more than 15 seconds, both UP and DOWN movement is prohibited from the DDSA.
- If the DOWN switch is closed for more than 15 seconds, DOWN movement is prohibited while UP movement is permitted from the DDSA.
- If an express switch DTC is set, express function is disabled but regular window functions are not affected.
- All passenger door windows will operate normally from the passenger door window switch mounted to the associated passenger door.

CONDITIONS FOR CLEARING THE DTC
The DDM clears this current DTC when the switch signal is no longer received. The DTC is stored as a history DTC. The history DTC will clear either after 50 OFF/ON cycles of the ignition switch without a repeated failure or in response to a scan tool command.

TEST DESCRIPTION

Steps 1-6:

The numbers below refer to the step numbers on the diagnostic table.
2. This step checks the module input state using the normal input status.
3. This step checks to see that the input is seen by the module.