Procedures For Selecting Crank Position Sensing Decode Mode

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.