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Home >> Mazda >> 2000 >> Protege ES, Standard >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Self-Diagnostics - 1.8L >> Diagnostic Trouble Code Tests >> DTC P0453: EVAP System, Pressure Sensor High Input >> Diagnosis & Repair Procedure

Diagnosis & Repair Procedure

  1. Ensure FREEZE FRAME PID data has been recorded. Check service bulletins. Go to next step.
  2. Using scan tool, access PID/DATA MONITOR. Record PID data for FTP V. If data is more than 4.8 volts, go to next step. If data is 4.8 volts or less, problem is intermittent (not current).
  3. Turn ignition off. Inspect FTP harness connector. If no problem is found, go to next step. If problem is found, repair as necessary. go to step  12 .
  4. Check continuity between FTP sensor harness terminal "A" (Brown wire) and ground. If continuity is not present, go to next step. If continuity is present, go to step  6 .
  5. Disconnect X-13 connector, located in front of fuel tank. Check continuity between X-13 female harness connector terminal "E" (Orange wire) and ground. If continuity is present, repair open in Brown wire between X-13 male connector terminal "E" and FTP sensor terminal "A". If continuity is not present, repair open in Orange wire between X-13 female connector terminal "E" and PCM terminal No. 91. After repairs, go to step  12 .
  6. Check X-13 connector terminals. If no problem is present, go to next step. If any problem is present, repair as necessary and go to step  12 .
  7. Check continuity between X-13 male harness connector terminal "A" (Pink/Blue wire) and terminal "C" (Red wire). If continuity is not present, go to next step. If continuity is present, repair short between circuits. Go to step  12 .
  8. Check continuity of Red wire between FTP sensor harness connector terminal "B" and X-13 male harness connector terminal "C". If continuity is present, go to next step. If continuity is not present, repair open Red wire. Go to step  12 .
  9. Disconnect PCM connector. Inspect PCM and harness connector terminals. If no problem is found, go to next step. If problem is found, repair as necessary. Go to step  12 .
  10. Check continuity between X-13 female harness connector terminal "A" (Pink/Black wire) and terminal "C" (Red/Black wire). If continuity is not present, go to next step. If continuity is present, repair short between circuits. Go to step  12 .
  11. Connect breakout box to harness connector. Leave PCM disconnected. Check continuity of Red/Black wire between X-13 female harness connector terminal "C" and breakout box terminal No. 62. If continuity is present, go to next step. If continuity is not present, repair open Red/Black wire. Go to next step.
  12. Connect all connectors. Turn ignition on. Erase DTC. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION - MIATA, MILLENIA, MPV & PROTEGE article. Using scan tool, access PID/DATA MONITOR. Check PID data for FTP V. FTP V should be .2-4.8 volts. Check for DTCs. If same DTC is pending, replace PCM. If DTC is not pending, go to next step.
  13. Erase DTC. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION - MIATA, MILLENIA, MPV & PROTEGE article. If any DTC is present, go to appropriate test. If no DTC is present, test is complete.
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