Circuit Description
If this DTC is set, and no misfire is currently present, the vehicle may simply
have been run while low on fuel. This DTC being present with a properly functioning
fuel sender circuit eliminates the need for a lengthy misfire diagnosis. In any case,
a misfire must have been detected. Verify that there is an adequate fuel supply in
the tank.
DTC Parameters
DTC P0313 will set when a misfire has been detected along with the following
events:
| • | Condition exists for longer than 30 seconds |
| • | Fuel tank contains less than 2.9 gallons of fuel |
| • | Engine speed between 520 and 6520 rpm |
| • | Traction control is not active |
| • | Engine has been running more than 5 seconds |
| • | IAT greater than -8°C (17°F) |
| • | EVAP diagnosis is not active |
| • | No TP or CKP codes are set |
Important: The misfire diagnostics are continually checked with the engine running when
the above conditions have been met.
P0313 is a (type D) DTC.
Diagnostic Aids
When attempting to diagnose an intermittent problem, use the Scan tool to review
malfunction history diagnostic information. This supplemental data can be used to
duplicate a problem.
If an injector, IC, or EGR DTC is active and the misfire DTC is active, diagnose
the other DTCs first.
Use the scan tool to monitor active misfire counts. If a specific cylinder misfires
under certain load conditions, it may be duplicated in the stall.
| • | Injector resistance = 14-23 ohms |
| • | Coil Pack Secondary Resistance = 8 to 15 K ohms |
| • | Wire Positioning on Coils - 1,3,5 2,4,6 |
