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 P0103: MASS OR VOLUME AIR FLOW CIRCUIT HIGH INPUTSIGNAL CIRCUIT INSPECTION

2005 Hyundai Santa Fe GLS, 2.7 D, AWD

Signal Circuit Inspection

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

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

Check voltage
1. Ignition "OFF"
2. Disconnect MAF sensor connector.
3. Ignition "ON" & Engine "OFF"
4. Measure voltage between terminal 1 of MAF sensor harness connector and chassis ground.
  Specification : Below 1V
  
  Fig 1: Measuring Voltage Between Terminal 1 Of MAF Sensor Harness Connector And Chassis Ground
  Courtesy of HYUNDAI MOTOR CO.
5. Is the measured voltage within specifications?
  YES
  - Go to "COMPONENT INSPECTION " procedure.
  NO
  - Go to next step .
Check for short to battery in harness
1. Ignition "OFF"
2. Disconnect MAFS connector.
3. Measure resistance between terminal 1 and 2 of MAF sensor harness connector.
4. Measure resistance between terminal 1 and 4 of MAF sensor harness connector.
  Specification : Infinity
  
  Fig 2: Measuring Resistance Between Terminal 1 And 4 Of MAF Sensor Harness Connector
  Courtesy of HYUNDAI MOTOR CO.
5. Is the measured resistance within specifications?
  YES
  - Go to "GROUND CIRCUIT INSPECTION " procedure.
  NO
  - Check short to battery in signal 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.