Circuit Description
This diagnostic trouble code (DTC) is used to indicate that the fuel level was
low during a misfire or lean condition. If this DTC is present, and no misfire or
lean condition is currently present, the vehicle may have simply run low on fuel.
DTC Descriptor
This diagnostic procedure supports the following DTC:
DTC P0313 Engine Misfire Low Fuel Level.
Conditions for Running the DTC
| • | DTCs P0106, P0107, P0108, P0117, P0118, P0122, P0123, P0336, P0337,
P0341, P0342, and P0502 are not set. |
| • | The engine speed is between 600-6,500 RPM and steady. |
| • | The ignition 1 voltage is between 11-16 volts. |
| • | The engine coolant temperature (ECT) is between -7°C and 120°C
(19°F and 248°F). |
| • | The fuel level is less than 15 percent. |
| • | The throttle angle is steady within 4 percent. |
| • | The antilock brake system (ABS) and the traction control system (TCS),
if equipped, is not active. |
| • | The torque management is not active. |
| • | The transmission is not changing gears. |
| • | The A/C clutch is not changing states. |
| • | The ECM is not in fuel shut-off or decel fuel cut-off mode. |
| • | The ECM is not receiving a rough road signal. |
| • | DTC P0313 runs continuously when the above conditions are met. |
Conditions for Setting the DTC
The ECM detects a crankshaft rotation speed variation indicating a misfire sufficient
to cause emission levels to exceed a predetermined value.
Action Taken When the DTC Sets
| • | The control module stores the DTC information into memory when
the diagnostic runs and fails. |
| • | The malfunction indicator lamp (MIL) will not illuminate. |
| • | The control module records the operating conditions at the time
the diagnostic fails. The control module stores this information in the Failure
Records. |
| • | The driver information center, if equipped, may display a message. |
Conditions for Clearing the DTC
| • | A current DTC Last Test Failed clears when the diagnostic runs
and passes. |
| • | A history DTC clears after 40 consecutive warm-up cycles,
if no failures are reported by this or any other non-emission related diagnostic. |
| • | Clear the DTC with a scan tool. |
Step
| Action
| Values
| Yes
| No
|
1
| Did you perform the Diagnostic System Check - Engine Controls?
| --
| Go to
Step 2
| Go to
Diagnostic System Check - Engine Controls
|
2
|
- Verify there is an adequate fuel supply in the tank. Add fuel if necessary.
- Using the scan tool, clear the DTCs.
- Select DTC and the specific DTC function.
- Enter the DTC number that was originally set.
- Operate the vehicle within the conditions to run for the original DTC.
Does the scan tool indicate that the diagnostic passed?
| --
| System OK
| Go to the applicable DTC table
|
