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3. EVAPORATIVE SYSTEM INSPECTION Perform an inspection of the entire evaporative emission system. Check for the follow conditions: - Holes or cracks - Loose seal points - Evidence of damaged components - Incorrect routing of hoses and tubes - Loose or missing Fuel Filler Cap - Improper installation of the Fuel Fill Cap - Damaged Locking tabs on Cap and/or fill tube - Damaged seal points on Cap and/or fill tube - Fuel cap gasket seal Were any problems found? Yes >> Repair as necessary. Perform the PCM Verification Test Ver. 1 (Refer to 9 - ENGINE - DIAGNOSIS AND TESTING). No >> Go to 4 4. EVAPORATIVE SYSTEM LEAKING To continue testing you will need Miller Tool #8404A Evaporative Emission Leak Detector (EELD). WARNING: Keep lit cigarettes, sparks, flames, and other ignition sources away from the test area to prevent NOTE: The fuel tank should have between 20% and 80% of fuel tank capacity to properly test the EVAP Block the vent hose of the canister if using the service port. Connect shop air to the EELD. Set the smoke/air control switch to AIR. Insert the tester’s AIR supply tip (clear hose) into the appropriate calibration orifice on the tester’s control panel Press the remote smoke/air start button. Position the red flag on the air flow meter so it is aligned with the indicator ball. When the calibration is complete, release the remote button. The EELD flow meter is now calibrated in liters per Install the service port adapter #8404-14 on the vehicle’s service port and block the vent hose of the EVAP Canister Connect the Air supply hose from the EELD to the service port (if equipped) or to the #8404-ADP adapter. Press the remote button to activate AIR flow. NOTE: Larger volume fuel tanks, lower fuel levels, vehicles equipped with a Flow Management Valve may ABOVE the red flag indicates a leak present. BELOW the red flag indicates a sealed system. Is the indicator ball above the red flag? Yes >> Go to 5 No >> Refer to the Freeze Frame data recorded in step 1. If the data indicates that the vehicle was in motion when the DTC was set, verify that all hoses are properly connected. Perform the PCM Verification Test Ver. 1 (Refer to 9 - ENGINE - DIAGNOSIS AND TESTING). PM ENGINE ELECTRICAL DIAGNOSTICS - GPEC 9 - 395 |