|
|
10. EVAPORATIVE EMISSION LEAK DETECTION NOTE: A thorough visual inspection of the Evap system hoses, tubes, and connections may save time in Connect the SMOKE supply tip (black hose) to the service port (if equipped) or to the #8404-ADP adapter. Set the smoke/air control switch to SMOKE. NOTE: The flow meter indicator ball will not move at this point. NOTE: Make sure that smoke has filled the EVAP system by continuing to press the remote smoke/air start NOTE: For optimal performance, introduce smoke into the system for an additional 60 seconds; continue If a leak is concealed from view (i.e., top of fuel tank), release the remote smoke/air start button, and use the ultra- The exiting smoke deposits a residual fluid that is either bright green or bright yellow when viewed with a UV light. NOTE: The EVAP System is divided into three zones. A leak from any of these zones can cause this DTC to • — ZONE 1— 1 Fuel Cap 2 Recirculation Check Valve. 3 Vapor Recirculation Line. 4 Signal Vapor Line for FVM. 5 Flow Management Valve. 6 Fuel Tank to Canister Vapor Line. 7 Fuel Tank Vent (Check Valve). 8 Vapor Line to Canister. 9 Flow Control Orifice. 10 Control Valve. 11 Liquid Trap. 12 Fuel Tank. 13 Check valve. 14 Fuel Fill Tube to Tank connector. 15 Fuel Fill Tube Damaged or disconnected components. • — ZONE 2 — 1 Filter. 2 ESM. 3 Canister Vent Line. 4 Evap Canister. 5 Chassis Purge Valve. 6 Fuel Tank to Canister Vapor Line connection. 7 Evap Purge connection. • — ZONE 3 — 1 Evap Purge Vacuum Line. PM ENGINE ELECTRICAL DIAGNOSTICS - GPEC 9 - 371 |