DTC P0441, P0442, P0446 - EVAP Purge Control System

NOTE: This test is associated with DTCs P0441 - EVAP Purge Valve Permanently Open, P0442 - EVAP System Small Leak Detected and P0446 - EVAP Purge Valve Permanently Closed.

Install scan tool. Start engine and check if DTC P0441, P0442 or P0446 is present. If DTC is present, go to next step. If DTC is not present, problem is intermittent. See INTERMITTENTS in TESTS W/O CODES article.
Turn ignition off. Disconnect EVAP purge solenoid harness connector. Turn ignition on. Connect DVOM between solenoid harness connector terminal No. 2 and ground. Battery voltage should be present. If battery voltage is present, go to next step. If battery voltage is not present, check circuit between terminal No. 2 and ECM. See appropriate wiring diagram in WIRING DIAGRAMS article.
Turn ignition off. Disconnect ECM harness connector. Check for continuity between ECM harness connector terminal No. 36 and solenoid harness connector terminal No. 1. If continuity is not present, repair circuit as necessary. If continuity is present, go to next step.
Reconnect ECM and EVAP purge solenoid harness connector. Check EVAP related hoses and ensure they are not leaking or clogged. Repair or replace as necessary. Clear DTC. See CLEARING CODES under Self Diagnostic System section. Retest system. If DTC resets, replace ECM.