Typical Scan Tool Data
WARNING: This page is about a different car, the 2011 GMC Yukon, 2011 Chevrolet Tahoe, and 2011 Cadillac Escalade. However, it is still accessible from the selected car via links, so may be relevant.
Autostop Inhibit Reasons
| Parameter Display | Autostop Inhibit or Autostart Reason |
|---|---|
| 4WD Low | Transfer case selector is in 4 wheel drive Low Range |
| Autostart/stop Override | Scan tool Output Control active |
| Aux. Trans. Pump With ECM Ambient Air Temperature less than 10°C (50°F)1 |
DTC P0C2B or P2797 set OR ECM Ambient Air Temperature less than 10°C (50°F)1 |
| Aux. Trans. Pump With ECM Ambient Air Temperature 10°C (50°F) - 15°C (59°F)1 |
DTC P0C2B or P2797 set OR TFT less than 35°C (95°F) or greater than 95°C (203°F) |
| Aux. Trans. Pump With ECM Ambient Air Temperature 15°C (59°F) - 20° (68°F)1 |
DTC P0C2B or P2797 set OR TFT less than 25°C (77°F) or greater than 95°C (203°F) |
| Aux. Trans. Pump With ECM Ambient Air Temperature greater than 20° (68°F)1 |
DTC P0C2B or P2797 set TFT less than 20°C (68°F) or greater than 95°C (203°F) |
| Battery Pack Temp | Hybrid Batt Min Cell Temp is less than 10°C (50°F) OR Hybrid Batt Max Cell Temp is Greater than 47°C (116°F) |
| Drvr Axle Torque Request | Depression of the accelerator pedal has exceeded the torque capability for electric-only or EV Mode propulsion |
| ECM Request | ECM DTC testing in progress or ECM DTCs present |
| ECT - High Limit | ECT 110°C (230°F) or greater Autostop if cools down to 90°C (194°F) once high temperature limit has been reached. |
| ECT - Low Limit With ECM Ambient Air Temperature 10°C (50°F) - 20°C (68°F)1 |
ECT less than 68°C (154°F) Autostart if cools down to 60°C (140°F) once high temperature limit has been reached |
| ECT - Low Limit With ECM Ambient Air Temperature greater than 20°C (68°F)1 |
ECT less than 49°C (120°F) Autostart if cools down to 44°C (111°F) |
| Hood Position | Open or faulted |
| Hybrid Batt. Pack Voltage | 250V or less When Autostop limit has been achieved, Autostart if voltage drops to 200V |
| Hybrid Batt. Pack Power | 15kW or less Power is dependent upon battery temperature. Observe Hybrid Battery Temperature parameters when Hybrid Batt. Pack Power inhibits Autostop. When Autostop limit has been achieved, Autostart if power drops to 12kW |
| Hybrid Battery state of charge | 50% or less When Autostop limit has been achieved, Autostart if state of charge drops to 46% |
| Internal combustion engine Run Time With ECM Ambient Air Temperature 10°C (50°F) - 15°C (59°F)1 |
Less than 20 seconds since ignition crank |
| Internal combustion engine Run Time With ECM Ambient Air Temperature greater than 15°C (59°F)1 |
Less than 5 seconds since ignition crank |
| Ignition Crank | Ignition key not in RUN - engine remote started |
| IMS Range | Gear Selector in Reverse or Manual |
| Invalid Signal | The hybrid powertrain control module has monitored invalid data and has stored a DTC |
| Inverter Temperature | Greater than 65°C (149°F) When Autostop limit has been achieved, Autostart at 70°C (158°F) |
| Min. Hybrid Batt. Module Voltage | The minimum hybrid battery module pair voltage is less than 14 volts. When Autostop limit has been achieved, Autostart if voltage drops to 12V. |
| Motor Temperature | Greater than 165°C (329°F) When Autostop limit has been achieved, Autostart at 170°C (338°F) |
| Operating Conditions | The current driving conditions inhibit autostop operation. This parameter should be displayed along with other inhibit reasons such as Drvr Axle Torque Request |
| Reduced Engine Power | The ECM is limiting engine torque output and has stored a DTC |
| Remote Start Request | The vehicle has been started by remote transmitter |
| Reverse Inhibit Command | The transmission gear selector has been placed in the Reverse position |
| Run/Crank Mode | serial data gateway module Power mode is not in RUN |
| System Voltage | 12V system voltage is out of range as monitored by the hybrid powertrain control module |
| Vehicle Speed | Vehicle speed is greater than allowed |
| 1 The hybrid powertrain control module monitors the ECM Ambient Air Temperature parameter to determine outside temperature. the ECM will default to 0°C (32°F) ambient air temperature if an IAT sensor DTC is present. | |