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.

SYS.OK|MANUAL.DB● LIVE

HOMESERVICE MANUALSKIA2015FORTE5 SX, STANDARD TRANSREPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE PERFORMANCETESTING & DIAGNOSISENGINE CONTROL SYSTEM DIAGNOSIS (1 OF 2) - 1.6LDTC P0121: THROTTLE/PEDAL POSITION SENSOR/SWITCH 'A' CIRCUIT RANGE/PERFORMANCECOMPONENT INSPECTION

2015 Kia Forte5 SX, Standard Trans

Component Inspection

2015 Kia Forte5 SX, Standard TransSECTION Component Inspection

Check TPS Performance
1. IG KEY "OFF".
2. Connect CH A probe to signal terminal MAPS and CH B probe to signal terminal of TPS connector.
3. Warm up the engine to normal operating temperature.
4. Measure signal waveform of MAPS and TPS together by stepping on and off the accelerator pedal.
  Specification: Refer to SIGNAL WAVEFORM & DATA
  
  Fig 1: Scantool Display - TPS Signal Waveform
  Courtesy of KIA MOTORS AMERICA, INC.
Confirm Part Inspection
1. Does the TPS operate properly? (Check variation)
  YES
  - Go to "VERIFICATION OF VEHICLE REPAIR " procedure.
  NO
  - Substitute with a known-good TPS and check for proper operation. If the problem is corrected, replace TPS and then go to "VERIFICATION OF VEHICLE REPAIR " procedure.

RENDER: 1.0x

NO RELATED

Recommended Tools & Savings

Use the Manual With the Right Hardware

Pair factory procedures with proven DIY tools so the instructions are easier to execute.

Affiliate disclosure: We may earn a commission at no extra cost to you.

Shop Manual-Ready Tools Free Quote Check Quote Shield Pro

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.