P1630

Diagnostic Chart:

Wiring Diagram:

Circuit Description

This diagnostic test checks for the Enable Password Learning Flag indicating the PCM is in learn password mode. This mode allows the PCM to learn the password from the Passlock module at assembly or when being serviced. The password needs to be learned whenever the PCM or the Passlock module is replaced.

Conditions for Setting the DTC

When the Enable Learning Flag is set.

Action Taken When the DTC Sets

The Malfunction Indicator Lamp (MIL) will not illuminate.

CONDITIONS FOR CLEARING THE DTC

^ A History DTC will clear after forty consecutive warm-up cycles, if no failures are reported by this or any other emission related failure.

^ PCM battery voltage is interrupted.

^ Using a scan tool.


Diagnostic Aids

The PCM in learn mode is a DTC for the vehicle at the assembly plant, dealership and outside garage personnel as an indication that the learn mode is enabled. This means the PCM is now ready to learn a new password. Refer to Vehicle Theft Deterrent system for further diagnosis.