B2212

Diagnostic Chart:

Schematic:

CIRCUIT DESCRIPTION
The circuit for the Passenger Window Switch on the LH Front Door consists of:
^ LH Front Power Window Switch
^ Simple Bus Interface (SBI)
^ Driver Door Module

The LH front power window switch assembly is different from the other power window switches on the vehicle in that it contains an internal microprocessor. This LH front power window switch assembly reports all switch activity in the form of SBI messages to the driver door module. The actual diagnostic software program for DTC B2212 is contained in the driver door module and this diagnostic is run once every 300 milliseconds. Problems involving the driver door module or SBI may set other DTCs and affect the operation of the power door locks and outside rear view mirror.

CONDITIONS FOR SETTING THE DTC
If the driver door module detects that the SBI messages from the LH front power window switch assembly show that the passenger window switch has been in the UP position for 15 continuous seconds, this DTC will be set current. This diagnostic will not run if either DTC B1982 (Battery Voltage High) or B1983 (Battery Voltage Low) are set current.

ACTION TAKEN WHEN THE DTC SETS
This DTC is dynamic, and as such, is current only while the problem is present. While this DTC is current, the driver door module will ignore the actuation of the passenger window switch from the LH Front Power Window Switch.

CONDITIONS FOR CLEARING THE DTC
^ This DTC will be set from current to history when the window UP input cycles off or the power mode changes from OFF to RUN.
^ The history DTC will clear after 50 ignition cycles.
^ Use the On-Board clearing DTC feature.
^ Use a scan tool.

DIAGNOSTIC AIDS
^ A history DTC is evidence of an intermittent problem, clear the DTC and cycle the ignition switch from OFF to RUN. Then perform the Diagnostic System Check.
^ If DTC B2212 is current, cycle the ignition switch from OFF to RUN. If this DTC is still current, perform the following diagnostic.

TEST DESCRIPTION
The numbers refer to the step numbers on the diagnostic table:
1. Perform the Power Door System Diagnostic System Check prior to continuing the diagnosis of this DTC.
2. This repair procedure requires power window switch replacement.
3. Clear all DTCs following repair procedure completion.