B2757

DTC B2757

CIRCUIT DESCRIPTION
The memory function switches are normally open and are wired to the driver door switch assembly (DDSA). When a memory recall switch is pressed, the switch pulls the 5 V circuit from the DDSA low. The DDSA senses that a memory recall signal was pulled low and a class 2 message is sent out identifying that the circuit is active.

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

CONDITIONS FOR SETTING THE DTC
If a memory recall switch circuit is active for more than 30 continuous seconds, the circuit will be considered shorted, and the driver door module (DDM) will set this DTC.

ACTION TAKEN WHEN THE DTC SETS
The DDM ignores the invalid switch input from the memory function switch and will not respond to it. The DDM will respond to all other valid switch inputs.

CONDITIONS FOR CLEARING THE DTC
The DTC automatically clears when the switch circuit setting the DTC is no longer active or the power to the DDM changes from OFF to ON.

TEST DESCRIPTION

Steps 1-6:

Steps 7-10:

The number below refer to the step number on the diagnostic table.
2. Checks the existing state of the memory recall switch by using the current state of the signal parameter.