Procedures For Selecting Crank Position Sensing Decode Mode

WARNING: This page is about a different car, the 2003 Cadillac Seville and 2003 Cadillac DeVille. However, it is still accessible from the selected car via links, so may be relevant.

When diagnosing the Crankshaft Position (CKP) sensors, it may be necessary to enable a specific decode mode (Angle, Time A, or Time B). To enable a specific crank decode, using the scan tool, perform the following steps:

Turn ignition on, with engine off.
Select ENGINE OUTPUT CONTROLS.
Select CRANK POSITION SENSING DECODE MODE.
Select the desired mode (ANGLE, TIME A, or TIME B) and press SELECT STATE.
Command the decode mode by pressing COMMAND STATE.

The commanded state remains valid for the current ignition cycle. A specific decode mode can not be commanded with the engine running, or after commanding a desired decode mode. To command a different decode mode, you must cycle the ignition off and on.

If an intermittent condition is suspected, see INTERMITTENT CONDITIONS under SELF-DIAGNOSTIC SYSTEM.