Scan Tool Parameter | System State | Expected Value | Definition |
|---|---|---|---|
Operating Conditions: Ignition ON/Engine OFF | |||
Battery Voltage Signal | __ | 12.3 V | The scan tool displays 0-20 volts. The scan tool displays the voltage as received by the module. |
Generator L Terminal Signal Command | __ | 0 Percent | The scan tool displays On/Off. The scan tool displays Off until the engine is running, at which time it will display On. |
Regulated Voltage Control Current Sensor | __ | Varies | The scan tool displays Amps. This controls how much current is going to or from the negative battery cable. |
Running State of Charge | __ | Varies | The scan tool displays percent. This calculates the battery's state of charge based on current and voltage over a long period of time. |
Scan Tool Output Control | Description |
|---|---|
GEN L-Terminal | The engine control module (ECM) commands the generator OFF by removing the 5-volt reference signal from the L terminal of the voltage regulator when you select OFF. The generator will then stop generating an output voltage. |
