P1631

Theft Deterrent Password Incorrect:

Circuit Description

This test checks for mismatched passwords between the Instrument Panel Cluster (IPC) and PCM. Whenever the IPC or PCM are replaced, a theft learn procedure must be followed in order for the new password to be learned.

Conditions for Setting the DTC

Test Condition

Vehicle Anti-Theft system enabled.

Failure Conditions

^ Fuel disable lockout set.

^ An incorrect fuel continue password has been received.

Action Taken When the DTC Sets

^ The Malfunction Indicator Lamp (MIL) will not illuminate.

^ No message will be displayed.

Conditions for Clearing the DTC

^ A History DTC will clear after forty consecutive warm-up cycles with no failures of any non-emission related diagnostic test.

^ A Last Test Failed (current) DTC will clear when the diagnostic runs and does not fail.

^ PCM battery voltage is interrupted.

^ Using a Scan tool.