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Home >> Cadillac >> 2007 >> STS V >> Repair and Diagnosis >> Body & Frame >> Ignition Switch/Steering Lock >> Immobilizer System >> Diagnostic Information and Procedures >> Scan Tool Data Definitions
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Scan Tool Data Definitions

Crank Request Signal

The scan tool displays Yes/No. The scan tool displays No until the ignition is placed into the START position, then Yes is displayed.

EC Ignition Relay Command

The scan tool displays On/Off. The scan tool displays the commanded state of the ignition 1 relay.

EC Ignition Relay Feedback

The scan tool displays the voltage feedback form the ignition 1 relay.

Engine Speed

The scan tool displays the speed of the engines crankshaft rotation from information received from the crankshaft position (CKP) sensor.

Gen F-Terminal Signal

The scan tool displays 0%-100%. The scan tool displays 0%-10% until the engine is started and the PCM receives a signal from the generator then OK is displayed.

Gen-L Terminal Signal Circuit

The scan tool displays On/Off. The scan tool displays Off until the engine is running, then the PCM supplies then the percentage value varies depending on electrical loads.

Ignition 1 Signal

The scan tool displays voltage as measured from the ignition switch ignition 1 position.

Starter Relay Circuit S

The scan tool displays Fault/OK. The scan tool displays Fault until the starter relay control circuit is grounded, then OK is displayed.

Starter Relay Command

The scan tool displays On/Off. The scan tool displays Off until engine start has been requested, then it reads On.

Vehicle Security Status

The scan tool displays the current vehicle theft deterrent (VTD) state.

VTD Auto Learn Timer

The scan tool displays Active/Inactive. The scan tool displays the current state of the VTD Auto. Learn Timer, which must time out three times in order for the relearn procedure to be complete.

VTD Fuel Disable Until Ignition Off

The scan tool displays Yes/No. The scan tool displays Yes when the PCM has received the fuel disable password from the VTD system. This indicates the PCM will not allow fuel delivery until the ignition is switched off prior to another start attempt.

VTD Fuel Disable

The scan tool displays Enable/Disable. The scan tool displays Enable when the PCM has received a disable password from the VTD system.

VTD Password Learn Enable

The scan tool displays Yes/No. The scan tool displays No until the VTD is placed in learn mode, then it will display Yes.