Safety Warning

DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.

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HOMESERVICE MANUALSHYUNDAI2003SANTA FE BASE, AUTOMATICREPAIR AND DIAGNOSISENGINE PERFORMANCETESTING & DIAGNOSISENGINE CONTROLS - SELF-DIAGNOSTICS - 2.4LDIAGNOSTIC TESTSDTC P0507: IDLE AIR CONTROL SYSTEM - RPM HIGHER THAN EXPECTEDINSPECTION/REPAIRW/HARNESS INSPECTIONCONTROL CIRCUIT INSPECTION

2003 Hyundai Santa Fe Base, Automatic

Control Circuit Inspection

2003 Hyundai Santa Fe Base, AutomaticSECTION Control Circuit Inspection

Check for short to battery in harness.
1. Ignition "OFF".
2. Disconnect ISCA connector and PCM connector.
3. Measure resistance between terminal 2 of IACS harness connector and terminal 1 of harness connector.
4. Measure resistance between terminal 2 of IACS harness connector and terminal 3 of harness connector.
  Specification: Infinite
  
  Fig 1: Measuring Resistance Between Terminal 2 Of ISCA Harness Connector And Terminal 1 Of Harness Connector
5. Is the measured resistance within specifications?
  YES
  - Go to " 2 Check for short to ground in harness" as below.
  NO
  - Check for short to battery in harness.
  - Repair or replace as necessary and then, go to "VERIFICATION OF VEHICLE REPAIR " procedure.
Check for short to ground in harness.
1. Ignition "OFF".
2. Disconnect ISCA connector and PCM connector.
3. Measure resistance between terminal 1 of harness connector and chassis ground.
4. Measure resistance between terminal 3 of harness connector and chassis ground.
  Specification: Infinite
  
  Fig 2: Measuring Resistance Between Terminal 1 Of Harness Connector And Chassis Ground
5. Is the measured resistance within specifications?
  YES
  - Go to " 3 Check for open in harness" as below.
  NO
  - Check for short to battery in harness.
  - Repair or replace as necessary and then, go to "VERIFICATION OF VEHICLE REPAIR " procedure.
Check for open in harness.
1. Ignition "OFF".
2. Disconnect ISCA connector and PCM connector.
3. Measure resistance between terminal 1 of ISCA harness connector and terminal 28 of PCM harness connector.
4. Measure resistance between terminal 3 of ISCA harness connector and terminal 14 of PCM harness connector.
  
  Fig 3: Measuring Resistance Between Terminal 3 Of ISCA Harness Connector And Terminal 14 Of PCM Harness Connector
5. Is the measured resistance within specifications?
  YES
  - Go to "COMPONENT INSPECTION " procedure.
  NO
  - Check for open in harness.
  - Repair or replace as necessary and then, go to "VERIFICATION OF VEHICLE REPAIR " procedure.

RENDER: 1.0x

NO RELATED

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

• You smell fuel, burning insulation, or see smoke.
• Brakes feel soft, pull hard to one side, or make grinding noises.
• The engine overheats, stalls repeatedly, or misfires under load.
• You are missing required tools, torque specs, or safe lifting equipment.
• You are not confident in the next step or safety outcome.