B2511

DTC B2511 Steering Wheel Control Conv Key Stuck:

CIRCUIT DESCRIPTION
Eight steering wheel control switches are used to control four audio and tour HVAC functions. When the vehicle is equipped with the cellular telephone option, four telephone switches take the place of the HVAC steering wheel controls. The steering wheel controls are configured as a resistive ladder network connected to the Dash Integration Module (DIM) across connector C1 terminal B3 and connector C2 terminal A1. When the vehicle is in ON, ACCY or RAP, battery voltage is provided from the DIM on CKT 1796 (DK BLU) to the steering wheel controls. Pressing a switch (or switches) causes a voltage to appear on return CKT 1375 (PPL) which has a value unique to the switch(es) pressed.

CONDITIONS FOR SETTING DTC
^ DTC B2511 only sets if B1952 or B1983 is not current in DIM memory.
^ DTC B2511 sets if the DIM determines that one of the audio steering wheel controls switches is stuck.

ACTION TAKEN WHEN THE DTC SETS
^ DTC B2511 is stored in the DIM memory.
^ The module disables the steering wheel control functions as long as this DTC is current.
^ This DTC does not cause a driver warning message to appear.

CONDITIONS FOR CLEARING DTC
^ A current DIC clears (status changes from current to history) if the conditions which caused the DTC to set are no longer present.
^ A history DTC clears after 50 consecutive ignition cycles if the condition for the malfunction is no longer present.

DIAGNOSTIC AIDS
Refer to Steering Wheel Controls in Entertainment for additional information about this system.

TEST DESCRIPTION
The numbers below refer to the step numbers on the diagnostic table:
1. Perform the Body Control Module Diagnostic System Check before continuing with the diagnosis of this DTC.
2. Clear all DTCs and cycle ignition to check that the DTC did not erroneously set.
8. Clear all DTCs after the repair procedure is complete.