B2217

Diagnostic Chart:

SCHEMATIC
Refer to Power Window Schematics Front Power Window Components schematic.

CIRCUIT DESCRIPTION
The simple bus interface provides a communications path from the LH power window switch to the driver door module (DDM). The DDM contains the following two types of software:
^ Switch message decoding software
^ Simple bus interface diagnostic software

The software enables the DDM to monitor the state of the LH front power window switch.

CONDITIONS FOR RUNNING THE DTC
^ All modules involved in the circuit must be powered.
^ No module involved in the circuit may have B1982 (battery voltage high) or B1983 (battery voltage low) set as a current DTC.
^ All modules involved in the circuit must be communicating (no current communication DTC set).

CONDITIONS FOR SETTING THE DTC
DTC B2217 will set if the right rear window switch is continuously closed in DOWN position for a period greater than 15 seconds.

DTCs B1982 (battery Voltage High) and B1983 (Battery Voltage Low) must not be current or the diagnostic will not run.

ACTION TAKEN WHEN THE DTC SETS
The switch command will be ignored until it again changes state.

CONDITIONS FOR CLEARING THE DTC
^ This DTC will set from current to history when the window DOWN input cycles OFF.
^ The history DTC will clear after 50 ignition cycles.

DIAGNOSTIC AIDS
^ A history DTC is evidence of a intermittent problem.
^ If DTC B2217 is current, cycle the ignition switch from OFF to RUN. If this DTC is still current, perform the following diagnostics.

TEST DESCRIPTION
The number(s) below refer to the step number(s) on the diagnostic table.
2. Check the module input state using the normal input status.
3. Check to see that the input is seen by the module.