Scan Tool Data Definitions
- Battery Voltage Signal
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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).
- GEN F-Terminal Signal
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The scan tool displays 0-100%. The scan tool displays 0-10% until the engine is started and the powertrain control module engine control module (ECM) receives a signal from the generator then 5-90% is displayed.
- GEN L-Terminal Signal Command
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The scan tool displays On/Off. The scan tool displays Off until the engine is running, then the engine control module (ECM) supplies then the percentage value varies depending on electrical loads.
- GEN L-Terminal Signal Status
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The scan tool displays OK/Incomplete/Short Gnd/Open/Short B+. The scan displays the status of the Generator L terminal circuit.
- Ignition 1 Signal
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The scan tool displays 0-20 Volts. The scan tool displays the voltage as received on the Ignition 1 circuit to the ECM.
- Starter Relay Command
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The scan tool displays ON/OFF. The scan tool displays Off until engine start has been requested, then it reads On.
- Starter Relay Circuit History
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The scan tool displays Fault/OK/Invalid State. The scan tool displays Fault until the starter relay circuit history is grounded then OK is displayed.
- Starter Relay Circuit Status
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The scan tool displays OK/Incomplete/Short Gnd/Open/Short B+. The scan displays the status of the starter relay control circuit.
- PNP Switch
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The scan tool displays, In Gear/Park/Neutral/. The scan tool displays the position of the transmission range switch.