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 MANUALSHYUNDAI2011SANTA FE GLS, 3.5 G, AWDREPAIR AND DIAGNOSISENGINE PERFORMANCETESTING & DIAGNOSISENGINE CONTROL SYSTEM DIAGNOSIS (3 OF 3) - G3.5 DOHCDTC P0638: THROTTLE ACTUATOR CONTROL RANGE/PERFORMANCE (BANK 1)INSPECTION/REPAIRSYSTEM INSPECTION

2011 Hyundai Santa Fe GLS, 3.5 G, AWD

System Inspection

2011 Hyundai Santa Fe GLS, 3.5 G, AWDSECTION System Inspection

Visual Inspection
1. Check the installation condition between MAPS and throttle body.
2. Check deformation, crack or installation of throttle valve (body)
3. Has a problem been found?
  YES
  - Substitute with a known-good throttle body and check for proper operation. If the problem is corrected, replace throttle body and then go to VERIFICATION OF VEHICLE REPAIR .
  NO
  - Go to 2.

Check MAPS

IG "OFF" and install a scantool
Connect probe to MAPS and TPS to check signal waveform by using oscilloscope function.

ENG "ON" and monitor signal waveform during acceleration and deceleration.

Specification : Signal waveform will be displayed as follows:

VOLTAGE SPECIFICATIONS

Pressure (kPa)	Voltage (V)
20	0.79
46.66	1.84
101.32	4.0

Fig 1: Signal Waveform Data - MAPS And TPS

Courtesy of HYUNDAI MOTOR CO.

Is the relationship between the MAP and the TPS correct?
YES
- Go to COMPONENT INSPECTION .
NO
- Substitute with a known - good MAFS and check for proper operation. If the problem is corrected, replace MAFS and go to VERIFICATION OF VEHICLE REPAIR .

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.