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Home >> Mazda >> 2003 >> Tribute LX, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 26 (Engine Controls - Self-Diagnostics) >> Diagnostic Tests >> DTC P1449: Canister Drain Cut Valve Open Or Short >> Diagnosis & Repair Procedure

Diagnosis & Repair Procedure

WARNING: This page is about a different car, the 2002 Mazda Protege5 and 2002 Mazda Protege. However, it is still accessible from the selected car via links, so may be relevant.
  1. Check for related service bulletins. Repair as necessary and go to next step.
  2. Turn ignition switch off and then on. Check if DTC P1449 is present. DTC is present, go to next step. If DTC is not present, problem is intermittent. See INTERMITTENTS in TROUBLE SHOOTING - NO CODES article.
  3. Turn ignition switch off. Disconnect CDCV harness connector. Check for loose, damaged or corroded terminals. If any problems are found, repair or replace as necessary. After repair, go to step  9. If no problem is found, go to next step.
  4. Measure resistance between CDCV harness connector terminals. If resistance is 17-21 ohms, go to next step. If resistance is not 17-21 ohms, replace CDCV. After repair, go to step  9.
  5. Turn ignition switch on, engine off. Measure voltage between ground and CDCV harness connector terminal "A" (White/Red wire). If battery voltage is present, go to next step. If battery voltage is not present, repair open in White/Red wire between CDCV harness connector terminal "A" and main relay harness connector. See WIRING DIAGRAMS article. After repair, go to step  9.
  6. Turn ignition switch off. Disconnect PCM 104-pin harness connector. Check for loose, damaged or corroded terminals. If any problems are found, repair or replace as necessary. After repair, go to step  9. If no problem is found, go to next step.
  7. Check for continuity between ground and CDCV harness connector terminal "B" (Blue/Orange wire). If continuity is not present, go to next step. If continuity is present, repair short to ground in circuit between CDCV harness connector terminal "B" (Blue/Orange wire) and PCM 104-pin harness connector terminal No. 18 (Yellow wire). After repair, go to step  9.
  8. Connect 104-pin Breakout Box (49-UN01-130) to PCM harness connector only. See Figure. Turn ignition switch on, engine off. Measure voltage between ground and CDCV harness connector terminal "B" (Blue/Orange wire). If battery voltage is present, repair short to power in circuit between CDCV harness connector terminal "B" (Blue/Orange wire) and PCM 104-pin harness connector terminal No. 18 (Yellow wire). See Figure. See WIRING DIAGRAMS article. After repair, go to next step. If battery voltage is not present, check for continuity between CDCV harness connector terminal "B" (Blue/Orange wire) and breakout box terminal No. 18.
    • If continuity is present, go to next step.
    • If continuity is not present, repair open in circuit between CDCV harness connector terminal "B" (Blue/Orange wire) and PCM 104-pin harness connector terminal No. 18 (Yellow wire). After repair, go to next step.
  9. Reconnect all connectors. Turn ignition switch off and then on. Check for DTCs. See RETRIEVING DIAGNOSTIC TROUBLE CODES  under SELF-DIAGNOSTIC SYSTEM. If DTC P1449 is present, replace PCM and go to next step. If DTC P1449 is not present, go to next step.
  10. Cycle ignition switch from off to on. Check for DTCs. See RETRIEVING DIAGNOSTIC TROUBLE CODES  under SELF-DIAGNOSTIC SYSTEM. If no other DTCs are present, testing is complete. If any other DTC is present, go to applicable test and repair.
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