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Home >> Mazda >> 2003 >> Protege5 Standard >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Self-Diagnostics >> Diagnostic Tests >> DTC 2009: Variable Tumble Control System Solenoid Valve Circuit - Low Input >> Diagnostic Procedure

Diagnostic Procedure

  1. Verify Related Repair Information Availability -  Turn ignition off. Connect scan tool to DLC-2. Turn ignition on, engine off. Monitor for FREEZE FRAME DATA and ensure data has been recorded. Check service bulletins for repair information related to this DTC. If repair information is not available, go to next step. If repair information is available, perform diagnosis and repair as necessary. After repair, go to step  10.
  2. Classify Intermittent Concern Or Continuous Concern -  Using scan tool, clear DTCs. See CLEARING DIAGNOSTIC TROUBLE CODES  under SELF-DIAGNOSTIC SYSTEM. Start engine and allow to reach normal operating temperature. Check for DTCs. If DTC P2009 is present, go to next step. If DTC P2009 is not present, problem is intermittent. See INTERMITTENTS in TROUBLE SHOOTING - NO CODES article.
  3. Classify Open Circuit Or Short To Ground Malfunction -  Disconnect manifold vacuum hose at VTCS solenoid valve. Connect vacuum pump to VTCS solenoid valve and apply vacuum. If vacuum does not hold for 5 seconds, go to next step. If vacuum holds for 5 seconds, go to step  5.
  4. Inspect Passage Control Of VTCS Solenoid Valve -  Turn ignition off. Disconnect VTCS solenoid valve 2-pin harness connector. Apply vacuum to VTCS solenoid valve. If vacuum does not hold for 5 seconds, replace VTCS solenoid valve. After repair, go to step  10. If vacuum holds for 5 seconds, repair short circuit to ground in Pink wire between VTCS solenoid valve terminal "B" and PCM 104-pin harness connector terminal No. 73. After repair, go to step  10.
  5. Inspect VTCS Solenoid Valve Connector For Poor Connection -  Turn ignition off. Check for poor connection due to damaged, pulled-out terminals, corrosion, etc. If no problem is found, go to next step. If any problem is found, repair as necessary. After repair, go to step  10.
  6. Inspect VTCS Solenoid Valve -  Measure resistance between VTCS solenoid valve terminals. If resistance reading is 22-26 ohms, go to next step. If resistance reading is not as specified, replace VTCS solenoid valve. After repair, go to step  10.
  7. Inspect VTCS Solenoid Valve Power Supply Circuit For Open Circuit -  Turn ignition on. Measure voltage between VTCS solenoid valve harness connector terminal "A" (White/Red wire) and ground. If battery voltage is present, go to next step. If battery voltage is not present, repair open circuit in White/Red wire between VTCS solenoid valve harness connector terminal "A" and main relay 4-pin harness connector terminal "D". See appropriate WIRING DIAGRAM under ENGINE PERFORMANCE in SYSTEM WIRING DIAGRAMS. After repair, go to step  10.
  8. Inspect PCM Connector For Poor Connection -  Turn ignition off. Disconnect PCM 104-pin harness connector. Check for poor connection due to damaged, pulled-out terminals, corrosion, etc. If no problem is found, go to next step. If any problem is found, repair as necessary. After repair, go to step  10.
  9. Inspect VTCS Solenoid Valve Control Circuit For Open Circuit -  Reconnect VTCS solenoid valve harness connector. Connect 104-pin Breakout Box (49-UN01-130) to PCM harness connector only. See Figure. Turn ignition on. Measure voltage between ground and breakout box terminal No. 73. See Figure. If battery voltage is present, go to next step. If battery voltage is not present, repair open or short circuit in Pink wire between PCM 104-pin harness connector terminal No. 73 and VTCS solenoid valve harness connector terminal "B". See appropriate WIRING DIAGRAM under ENGINE PERFORMANCE in SYSTEM WIRING DIAGRAMS. After repair, go to next step.
  10. Verify Trouble Shooting Of DTC P2009 Completed -  Reconnect all connectors. Turn ignition on, engine off. Using scan tool, clear DTCs. See CLEARING DIAGNOSTIC TROUBLE CODES  under SELF-DIAGNOSTIC SYSTEM. Start engine. Using scan tool, ensure ECT PID is more than 149°F (65°C) and RPM PID less than 3250 RPM. Check for DTCs. See RETRIEVING DIAGNOSTIC TROUBLE CODES  under SELF-DIAGNOSTIC SYSTEM. If DTC P2009 is present, replace PCM. For PCM removal and installation, see POWERTRAIN CONTROL MODULE under COMPUTERIZED ENGINE CONTROLS in REMOVAL, OVERHAUL & INSTALLATION article. After repair, go to next step. If DTC P2009 is not present, go to next step.
  11. Verify After Repair Procedure -  Using scan tool, perform After Repair Procedure. See AFTER REPAIR PROCEDURE . If no other DTCs are present, testing is complete. If any other DTC is present, follow appropriate DTC diagnostic procedure. See DIAGNOSTIC TROUBLE CODE DEFINITIONS .
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