B2221

Diagnostic Chart:

SCHEMATIC
Refer to Door Lock/Indicator Schematics Left Front Power Door Components schematic.

CIRCUIT DESCRIPTION
The driver door lock switch is wired to the driver door window switch. The driver door window switch sends the lock switch information to the DDM via the SBI.

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
^ If the driver door lock switch input for UNLOCK remain closed continuously for 30 seconds, DTC B2221 sets.
^ 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 actuation will be ignored until the switch leaves the low state of the lock switch input The manual door lock levers and key locks will still function normally.

CONDITIONS FOR CLEARING THE DTC
^ This DTC will set from current to history when the UNLOCK 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.
4. Check to see that the signal lines to the module are open with the switch removed.
5. Determine that the signal circuits are not shorted.