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EC-248 < COMPONENT DIAGNOSIS > [VK56DE] P0452 EVAP CONTROL SYSTEM PRESSURE SENSOR Check the following. • Harness connectors C1, E41 • Harness connectors E5, F14 • Harness for open or short between EVAP control system pressure sensor and ECM >> Repair open circuit or short to ground or short to power in harness or connectors. 9. CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR EC-248, "Component Inspection" OK or NG OK >> GO TO 10. NG >> Replace EVAP control system pressure sensor. 10. CHECK INTERMITTENT INCIDENT GI-35, "How to Check Terminal" and GI-38, "Intermittent Incident" >> INSPECTION END Component Inspection INFOID:0000000005149271 EVAP CONTROL SYSTEM PRESSURE SENSOR 1. Remove EVAP control system pressure sensor with its harness connector connected from EVAP canister. Always replace O-ring with a new one. 2. Install a vacuum pump to EVAP control system pressure sensor. terminal 32 and ground under the following conditions. CAUTION: • Always calibrate the vacuum pump gauge when using it. • Do not apply below -93.3 kPa (-700 mmHg, -27.56 inHg) or pressure over 101.3 kPa (760 mmHg, 29.92 inHg). 4. If NG, replace EVAP control system pressure sensor. Applied vacuum [kPa (mmHg, inHg)] Voltage (V) Not applied 1.8 - 4.8 -26.7 (-200, -7.87) 2.1 to 2.5 lower than above value PBIB1173E |