Pinpoint Test G556798P1

Pinpoint Tests

Pinpoint Test G556798p1 : Evaporative System Incorrect Purge Flow

G556798t1 : CHECK FUEL FILLER CAP INSTALLATION AND CONDITION OF CANISTER, PIPES AND CONNECTORS
1. Make sure that the fuel filler cap is correctly installed and tightened.
2. Check the condition of the carbon canister.
3. Check the condition of all accessible pipes and connectors in the vapor line.

- Are the canister and all pipes and connectors in good condition?

->YES
GO to Pinpoint Test G556798t2.

->NO
REPAIR as necessary. CLEAR the DTC, test the system for normal operation.

G556798t2 : CHECK THAT THE PURGE VALVE IS OPERATING
1. Disconnect the vapor pipe from the inlet port of the evaporative purge valve.
2. RUN the engine for 2 minutes, making sure that the engine reaches normal operating temperature.
3. Check that the evaporative purge valve is operating, by touch or by sound (using a stethoscope, it will be possible to hear the valve operating).

- Is the valve operating?

->YES
CHECK for related DTCs. Refer to the DTC Index.

->NO
CHECK the purge valve circuits. GO to Pinpoint Test G556798p3.