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(P0446) EVAP PURGE SOLENOID STUCK OPEN (CONTINUED) 3. CHECK EVAP PURGE SOLENOID FUNCTIONALITY Note: After disconnecting the Evap Purge vacuum connections, Using a hand vacuum pump, apply 330 mm Hg (10 in. Hg) to the can- Observe the vacuum gauge. With the DRB III T , actuate the PURGE CTRL VALVE. Does the vacuum drop when the solenoid is actuated? Yes >> Go To 4 No >> Replace the Evap Purge Solenoid.(Refer to 25 - EMIS- SIONS CONTROL/EVAPORATIVE EMISSIONS/EVAP/ PURGE SOLENOID - REMOVAL). Perform POWERTRAIN VERIFICATION TEST - VER 2. 4. EVAP VACUUM SUPPLY HOSE INSPECTION Turn the ignition off. Carefully inspect the Evap Purge Solenoid vacuum supply hose for proper routing. Check for a pinched or plugged vacuum hose to the Purge Solenoid. Inspect the vacuum port for any damage or restriction. Were any problems found? Yes >> Repair the vacuum supply hose/tube as necessary. Perform POWERTRAIN VERIFICATION TEST - VER 2. No >> Replace the EVAP Purge Solenoid. (Refer to 25 - EMISSIONS CONTROL/EVAPORATIVE EMISSIONS/ EVAP/PURGE SOLENOID - REMOVAL). 5. INTERMITTENT WIRING AND CONNECTORS The condition that caused this DTC to set is currently not present. Inspect the related wiring harness for a possible Note: Check connectors — Clean/repair as necessary. Poor pin to terminal connections can set DTCs. Note: Check for any Technical Service Bulletins that may apply. Were there any problems found? Yes >> Repair as necessary. Perform POWERTRAIN VERIFICATION TEST - VER 2. No >> The condition that caused this DTC to set is currently not present. Inspect the related wiring harness for a possible intermittent condition. ZH ENGINE - ELECTRICAL DIAGNOSTICS 9 - 465 |