Hard To Fill With Fuel: Notes
The components that are used for tank venting, and will be diagnosed in this procedure are basically the same for every non PHEV vehicle. The only differences are the locations of the components within the system on each vehicle. The graphics below are intended for reference and depicts the general configuration of the system components for the W-Body vehicles with gas engines.
 Courtesy of CHRYSLER GROUP, LLC
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| CALL-OUT |
DESCRIPTION |
| 1 |
Grade Vent Valve (GVV) |
| 2 |
Auxiliary Fuel Delivery Pump/Level Sensor Module (if equipped) |
| 3 |
Multifunctional Control Valve (MFCV) |
| 4 |
Grade Vent Valve/Fuel Tank Pressure Sensor |
| 5 |
Double Port Grade Vent Valve |
| 6 |
Canister Tube |
| 7 |
Recirculation (Recirc) Tube |
| 8 |
Primary Fuel Delivery Pump/Level Sensor Module |
| 9 |
Inlet Check Valve (ICV) |
| 10 |
Fuel Filler Tube |
| CALL-OUT |
DESCRIPTION |
| 1 |
Purge Tube |
| 2 |
Fuel Filler Pipe |
| 3 |
Recirculation (Recirc) Tube |
| 4 |
Canister Tube |
| 5 |
Fuel Filler Cup |
| 6 |
Fresh Air Filter |
| 7 |
Filter Hose (Filter to ESIM) |
| 8 |
Evaporative System Integrity Monitor (ESIM) |
| 9 |
Charcoal Canister |
 Courtesy of CHRYSLER GROUP, LLC
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