Scan Tool Data Definitions

Battery Voltage Signal: The scan tool displays 0-20 Volts. The scan tool displays the voltage as received by the module or the 72-08 battery voltage message from the body control module (BCM) over class 2 lines.
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.
GEN F-Terminal Signal: The scan tool displays 0-100%. The scan tool displays 0-10% until the engine is started and the powertrain control module (PCM) receives a signal from the generator then OK is displayed.
GEN L-Terminal Signal: The scan tool displays Voltage/No Voltage. The scan tool displays Voltage until the engine is running, then displays No Voltage when the engine is running.
Idle Boost Level: The scan tool displays amps. The scan tool displays the current engine idle boost level as commanded by the ECM/PCM.
Ignition 1 Signal: The scan tool displays 0-20 Volts. The scan tool displays the voltage as received on the ignition 1 circuit to the ECM/PCM.
Ignition Accessory Signal: The scan tool displays On and Off. The scan tool displays if the ignition 0 signal is On or Off.
Run/Crank Relay: The scan tool displays On or Off. The scan tool display actual state of the Run/Crank relay. It will display On when in a remote start event.
Run/Crank Relay Command: The scan tool displays On or Off. The scan tool displays the commanded state of the Run/Crank relay.
Starter Relay Command: The scan tool displays ON/OFF. The scan tool displays Off until engine start has been requested, then it reads On.
TR Sw.: The scan tool displays Park, Reverse, Neutral, Drive 5, Drive 4, Drive 3, Drive 2, Drive 1. The scan tool displays the position of the transmission range switch.