B2133

CIRCUIT DESCRIPTION
The memory function switches are normally open and are wired directly to the to the memory mirror module (MMM). When a memory recall switch is pressed, the switch pulls the 5 V signal circuit from the MMM low. The MMM senses that a memory recall signal was pulled low and a class 2 message is sent out to the memory seat module (MSM) identifying that the circuit is active. In response to this message the MSM performs the requested function.

CONDITIONS FOR RUNNING THE DTC
The MMM must be powered and can not have DTC B1982 - Device Power 1 Circuit High or B1983 - Device Power 1 Circuit Low as a current DTC 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 MMM will set this DTC.

ACTION TAKEN WHEN THE DTC SETS
^ The MMM ignores the invalid switch input from the memory function switch and will not respond to it.
^ The MMM will continue to respond to all other valid inputs from the other positioning switches.
^ All of the memory recall commands are ignored.

CONDITIONS FOR CLEARING THE DTC
^ The DTC automatically clears when the switch circuit setting this DTC is no longer active.
^ A history DTC will clear after 50 consecutive ignition cycles if the condition for the malfunction is no longer present.

TEST DESCRIPTION

Steps 1-8:

Steps 9-10:

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.