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 MANUALSHYUNDAI2005SANTA FE GLS, 2.7 D, AWDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT VARIANT/TRIMSECTION 4 (ENGINE CONTROL SYSTEM DIAGNOSIS (3.5L) (1 OF 2))DTC TROUBLESHOOTING PROCEDURESDTC P0203: INJECTOR CIRCUIT/OPEN-CYLINDER 3CONTROL CIRCUIT INSPECTION

2005 Hyundai Santa Fe GLS, 2.7 D, AWD

Control Circuit Inspection

2005 Hyundai Santa Fe GLS, 2.7 D, AWDSECTION Control Circuit Inspection

WARNING: This page is about a different variant/trim than selected.

Check for short to ground in harness
1. Ignition "OFF"
2. Disconnect injector connector.
3. Measure resistance between terminal 1 of injector harness connector and chassis ground.
  Specification : Infinity
  
  Fig 1: Measuring Resistance Between Terminal 1 Of Injector Harness Connector And Chassis Ground
  Courtesy of HYUNDAI MOTOR CO.
4. Is the measured resistance within specification?
  Yes
  - Go to next step .
  NO
  - Check for short to ground 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 injector connector and PCM connector.
3. Measure resistance between terminal 1 of injector harness connector and terminal 26/C121-A of PCM harness connector.
  Specification : Approx. below 1Ω
  
  Fig 2: Measuring Resistance Between Terminal 1 Of Injector Harness Connector And Terminal 26/C121-A Of PCM Harness Connector
  Courtesy of HYUNDAI MOTOR CO.
4. 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.