Circuit/System Testing

WARNING: This page is about a different variant/trim than selected.

NOTE:

Perform the Circuit/System Verification before proceeding with the Circuit/System Testing.

Test for a blockage or restrictions in the EVAP system components listed below and repair as necessary.
- Evaporative Emission Vent System Hoses
- Evaporative Emission Canister
- Q13 Evaporative Emission Vent Solenoid Valve
- Evaporative Emission Vent Filter
Reconnect all previously disconnected EVAP hardware.
NOTE:
Refer to the GE 41413-A evaporative emissions system tester (EEST) operation manual for detailed instructions in Evaporative Emission System Diagnosis .
Remove the fuel fill cap and connect the CH 41415-30 fuel tank cap adapter to the fuel tank filler neck. Connect the GE 41413-A evaporative emissions system tester (EEST) to the CH 41415-30 fuel tank cap adapter.
Ignition ON, seal the EVAP system with a scan tool.
Turn the nitrogen/smoke valve on the GE 41413-A evaporative emissions system tester (EEST) to nitrogen.
NOTE:
DO NOT exceed the specified value in this step. Exceeding the specified value may produce incorrect test results.
Use the remote switch to activate the GE 41413-A evaporative emissions system tester (EEST) and pressurize the fuel tank to 5.0 in H20.
Verify the scan tool Fuel Tank Pressure Sensor parameter is 0 in H20 when commanding the EVAP Vent Solenoid Valve to OFF.
- If not 0 in H20
  Test for a blockage or a restriction in the EVAP vent hose or inlet. If the inlet or hose test normal, replace the Q13 Evaporative Emission Vent Solenoid Valve.
- If 0 in H20
Operate the vehicle within the conditions for running the DTC. You may also operate the vehicle within the conditions that you observed from the freeze frame/failure records data.
- If the DTC sets
  Refer to step 1 above.
- If the DTC does not set
All OK.