B2960

Diagnostic Trouble Code Chart:

Wiring Schematic:

CIRCUIT DESCRIPTION
The Passlock module will read an analog voltage from the Passlock sensor. Based on an internal reference, the Passlock module will determine if the measured voltage is open, shorted to ground, a valid code, or a tamper code. There are 10 possible valid code combinations. The Passlock module will only accept the last learned valid code.

CONDITIONS FOR SETTING THE DTC
^ The Passlock module will inspect for a valid code when the ignition is rotated from ON to crank.
^ The Passlock module is reading a different code value than previously learned from the Passlock sensor.

ACTION TAKEN WHEN THE DTC SETS
^ The vehicle will not run if the fault occurs before the vehicle is started. The security telltale will be flashing.
^ If the vehicle is running when the fault occurs, the Passlock module will be in the fail enabled mode allowing the vehicle to start and run. The security telltale will be ON.

CONDITIONS FOR CLEARING THE DTC
^ The DTC will clear after an ignition cycle has occurred without the fault.
^ Passlock module history codes will be cleared after 100 ignition cycles with no current codes active.
^ Using a scan tool

DIAGNOSTIC AIDS
^ When replacing the Passlock sensor, all the sensor components; the lock, the sensor, the filter, and the harness, are included as a replacement part and must be replaced.
^ Use the scan tool in order to test the Passlock data voltage and the Passlock code.
^ Perform a visual inspection of the wiring and the connectors.
^ Inspect the Passlock sensor harness and the filter for an intermittent or poor connections (including the in-line connector). Refer to Intermittents and Poor Connections. Intermittents and Poor Connections

TEST DESCRIPTION
The numbers below refer to the numbers on the diagnostic table.
2. It the Passlock sensor has been replaced without the Passlock Learning Procedure, DTC B2960 will set.
3. This step will determine if the problem is in the Passlock sensor or the Passlock module. A 5 volt signal is normal for the Passlock signal input with the Passlock sensor disconnected.