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 MANUALSKIA2015FORTE LX, AUTOMATIC TRANSREPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE PERFORMANCETESTING & DIAGNOSISENGINE CONTROL SYSTEM DIAGNOSIS (1 OF 2) - 1.8LDTC P0326: KNOCK SENSOR 1 CIRCUIT RANGE/PERFORMANCE (BANK 1)COMPONENT INSPECTION

2015 Kia Forte LX, Automatic Trans

Component Inspection

2015 Kia Forte LX, Automatic TransSECTION Component Inspection

Component Resistance Inspection
1. Measure resistance between signal terminal and ground terminal of the sensor connector (Component side).
  Specification: Approx. 5MΩ at 20°C (68°F)
Output Signal Inspection
1. Remove knock sensor from vehicle and secure (across mounting boss) in a shop vise.
2. Set up an oscilloscope as follows:
  Channel A (+): Signal terminal, (-): Ground terminal
3. Rap on vise with a ball peen hammer while monitoring oscilloscope screen (there should be a spike of less than 1 volt with each hammer strike).
  Specification: knock sensor send a voltage spike with hammer strikes
Installation Torque Inspection
1. Check the installation torque of the knock sensor.
  Specification: Approx. 16 ~ 28N.m (160~250 kg.cm, 11.8~18.4 lb.ft)
2. Has a problem been found?
  YES
  - Check knock sensor for contamination, deterioration, or damage. Substitute with a known-good sensor and check for proper operation. If the problem is corrected, replace sensor and then go to "VERIFICATION OF VEHICLE REPAIR " procedure.
  NO
  - Check for poor connection between PCM/ECM and component: backed out terminal, improper mating, broken locks or poor terminal to wire connection. Repair as necessary and 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.