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Test TC-113A - EVAP Purge Flow Monitor Failure

NOTE: For connector terminal ID, see CONNECTOR IDENTIFICATION DIRECTORY. For component location see wiring diagram in the WIRING DIAGRAMS article.
NOTE: Replacing PCM will not correct this problem. Evaporative (EVAP) purge solenoid may also be referred to as EVAP solenoid.
  1. Using scan tool, monitor EVAP PURGE SOLENOID state. Start engine. Allow engine to reach normal operating temperature.
  2. Disconnect EVAP solenoid-to-EVAP canister hose at EVAP solenoid. Ensure no continuous vacuum flow exists through EVAP solenoid while scan tool displays duty cycle more than zero percent.
    CAUTION: DO NOT  use more than 5 psi in following step.
  3. Turn ignition off. Disconnect EVAP solenoid-to-EVAP canister vacuum hose at EVAP solenoid. Attempt to blow air through vacuum hose. If air flows, EVAP solenoid and hoses are okay. Test is complete. Perform TEST VER-5A.
  4. Disconnect EVAP solenoid-to-EVAP canister vacuum hose at EVAP canister. Attempt to blow air through vacuum hose. If air flows, replace EVAP canister and perform TEST VER-5A. If air does not flow, replace vacuum hose and perform TEST VER-5A.
  5. Turn engine off, ignition on. Disconnect EVAP solenoid-to-throttle body hose at EVAP solenoid. Connect a vacuum gauge to disconnected hose. Start engine and allow it to idle. If gauge does not read manifold vacuum, repair restriction in hose, throttle body or intake manifold and perform TEST VER-5A. If gauge reads manifold vacuum, go to next step.
  6. Reconnect EVAP solenoid-to-throttle body hose. Connect vacuum gauge to canister side of EVAP solenoid. If vacuum reading is not 3-7 in. Hg, replace EVAP solenoid and perform TEST VER-5A. If vacuum reading is 3-7 in. Hg, go to next step.
  7. Connect vacuum pump to EVAP solenoid-to-EVAP canister hose. Apply more than 2 in. Hg vacuum. If canister does not hold more than 2 in. Hg, replace EVAP solenoid and perform TEST VER-5A. If canister holds more than 2 in. Hg, go to next step.
  8. Check for plugged hose or vent port on EVAP canister. Repair hose as necessary and perform TEST VER-5A. If vent port is plugged, clean plugged vent port and retest. If no plugs exist, replace EVAP canister and perform TEST VER-5A.
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