October 30: LEMON manuals on a temporary server, it is slow and having issues, download the manuals you need! Later in November we will switch back to the fast server.

Code Enable Criteria

WARNING: This page is about a different car, the 2001 Cadillac Seville. However, it is still accessible from the selected car via links, so may be relevant.

The following must occur for DTC to run::

A control module refuses all additional inputs.
A control module first writes information to a cell, or address, then adds 0.25 to value, and calculates a check sum. If this checksum minus 0.25 is not equal to a cell value, a control module will store DTC.