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Home >> Suzuki >> 2001 >> Swift GL, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Self-Diagnostics >> Diagnostic Tests >> DTC P0505: Target Idle Speed Not Obtained >> Diagnosis & Repair Procedure
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Diagnosis & Repair Procedure

  1. Perform DTC CONFIRMATION TEST . If DTC P0505 is set, go to next step. If DTC P0505 is not set, problem is intermittent. System is okay at this time. See TROUBLE SHOOTING - NO CODES article.
  2. If using scan tool, go to next step. If not using scan tool check IAC valve operation. See IDLE CONTROL SYSTEM in SYSTEM & COMPONENT TESTING article. If IAC valve is okay, problem is intermittent. System is okay at this time. See TROUBLE SHOOTING - NO CODES article. If IAC valve is not okay, go to step  4.
  3. Clear DTCs. See CLEARING DIAGNOSTIC TROUBLE CODES  under SELF-DIAGNOSTIC SYSTEM. Turn ignition off. Connect scan tool. Start engine and allow it to reach normal operating temperature. Select MISC TEST on scan tool and command RPM to increase and decrease. If RPM increases and decreases as commanded, problem is intermittent. System is okay at this time. See TROUBLE SHOOTING - NO CODES article. If RPM does not increase and decrease as commanded, go to next step.
  4. Turn ignition off. Disconnect IAC valve connector. Check for poor terminal contact at IAC valve connector. If poor terminal contact is found, repair as necessary and go to DTC CONFIRMATION TEST . If terminal contact is okay, disconnect PCM 22-pin connector C23. Check for poor terminal contact at PCM 22-pin connector C23. If poor terminal contact is found, repair as necessary and go to DTC CONFIRMATION TEST . Go to next step.
  5. If terminal contact is okay, check for open or short in circuits between IAC valve, ground, main relay and PCM. See wiring diagram in WIRING DIAGRAMS article. Repair as necessary and go to DTC CONFIRMATION TEST . If wiring is okay, replace IAC valve and go to DTC CONFIRMATION TEST .
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