B2241

DTC B2240-B2242

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 volt 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 driver door module (DDM) will set this DTC.

ACTION TAKEN WHEN THE DTC SETS
The DDM ignores the continuous signal from the DDSA for the memory function switch, rules it invalid, 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The DTC automatically clears when the switch circuit setting this DTC is no longer active or the power to the DDM changes from OFF to ON.

TEST DESCRIPTION

Steps 1-4:

Steps 5-10:

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