P0656
DTC P0656
CIRCUIT DESCRIPTION
The engine control module (ECM) creates the fuel gage output signal by pulsing the circuit to ground. The ECM monitors the voltage on the fuel gage output circuit. If the ECM determines that the voltage is out of the normal operating range, a DTC sets.
DTC DESCRIPTOR
This diagnostic procedure supports the following DTC:
DTC P0656 Fuel Level Output Circuit
CONDITIONS FOR RUNNING THE DTC
- The engine is running.
- The ignition 1 voltage is more than 10 volts.
- This DTC runs continuously once the above conditions are met.
CONDITIONS FOR SETTING THE DTC
The ECM detects that the commanded state of the driver and the actual state of the signal circuit do not match.
ACTION TAKEN WHEN THE DTC SETS
- The malfunction indicator lamp (MIL) will not illuminate.
- The ECM will store conditions which were present when the DTC was set as Failure Records data only.
- This information will not be stored in the Freeze Frame data.
CONDITIONS FOR CLEARING THE MIL/DTC
- DTCs can be cleared by using the scan tool.
- Disconnect the ECM battery feed for more than 10 seconds.
TEST
