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(P0455) EVAP SYSTEM LARGE LEAK (CONTINUED) 7. FUEL TANK PRESSURE SENSOR OPERATION Note: The fuel level must be below 85%, or the Tank Vent/Rollover Valves and the Fuel Tank Overfill Check Install the fuel filler cap adapter. Attach the fuel filler cap to the adapter. Connect a hand-held vacuum pump to the fuel filler cap adapter. Slowly apply vacuum while monitoring the fuel tank pressure sensor on the DRB III T . Do not exceed 66 mm Hg (2 in. Hg) while performing this step. Note: The fuel tank pressure sensor reads normally -1 hPa (-0.0145 psi). When the vacuum is applied and Did the fuel tank pressure sensor operate as described above? Yes >> Go To 8 No >> Replace the Fuel Level Sending Unit/Pressure Sensor. (Refer to 14 - FUEL SYSTEM/FUEL DELIVERY/ FUEL LEVEL SENDING UNIT / SENSOR - REMOVAL). Perform POWERTRAIN VERIFICATION TEST - VER 2. 8. INTERMITTENT CONDITION WARNING: WHEN THE ENGINE IS OPERATING, DO NOT STAND IN A DIRECT LINE WITH THE FAN. DO NOT T Freeze Frame information. If possible, try to duplicate the conditions under which the DTC was set. Refer to any Technical Service Bulletins (TSB) that may apply. Note: A loose fuel filler cap could have caused this DTC to set. Make sure fuel filler cap is tight and in good Check for the following conditions: - Holes or cracks - Loose seal points - Evidence of damaged components - Incorrect routing of hoses and tubes - Fuel filler cap gasket seal Were any of the above conditions found? Yes >> Repair as necessary. Perform POWERTRAIN VERIFICATION TEST - VER 2. No >> The condition that caused this symptom is currently not present. Inspect the related wiring harness for a possible intermittent condition. ZH ENGINE - ELECTRICAL DIAGNOSTICS 9 - 485 |