B2208

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 front 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 B2208 sets any time the LH front power window Express switch is detected as being continuously closed, for a period greater than 15 seconds.
^ DTCs B1982 (Battery Voltage High) and B1983 (Battery Voltage Low) must not be current for the diagnostic program to set this DTC.

ACTION TAKEN WHEN THE DTC SETS
When this DTC is set, express functions are disabled but regular movement is not affected.

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

DIAGNOSTIC AIDS
A DTC retrieved as a history DTC with out a current DTC status indicates an intermittent problem. If the DTC is retrieved as a history DTC, cycle the ignition from ON to OFF and back to ON. If no current DTC is retrieved, check the connectors and circuits as outlined in the following test.

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.