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 MANUALSKIA2015OPTIMA SX TURBOREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT VARIANT/TRIMSECTION 107 (ENGINE CONTROL SYSTEM DIAGNOSIS (2 OF 3) - 2.4L (EXCEPT HEV))DTC P0564: CRUISE CONTROL MULTI-FUNCTION INPUT A CIRCUITWIRING INSPECTIONSIGNAL CIRCUIT INSPECTION
2015 Kia Optima SX Turbo
Signal Circuit Inspection
2015 Kia Optima SX TurboSECTION Signal Circuit Inspection
WARNING: This page is about a different variant/trim than selected.
■ Check Signal Circuit Voltage
- IG key OFF.
- Disconnect 'CRUISE REMOCON SWITCH' connector.
- IG key ON.
- Measure voltage between 'Signal (Cruise sw)' terminal of 'CRUISE REMOCON SWITCH' harness connector and chassis ground.
Specification : 4.8V ~ 5.1V
- Is the measured value within specification?
YES
- Go to "COMPONENT INSPECTION " procedure.
NO
- Go to CHECK SHORT IN SIGNAL CIRCUIT procedure below.
■ Check Short in Signal Circuit
- IG key OFF.
- Disconnect 'CRUISE REMOCON SWITCH' connector and Cluster connector.
- Check resistance between 'Signal (Cruise sw)' terminal and 'CRUISE MAIN' terminal of 'CRUISE REMOCON SWITCH' harness connector.
- Check resistance between 'Signal (Cruise sw)' terminal and 'Ground (Cruise sw)' terminal of 'CRUISE REMOCON SWITCH' harness connector.
Specification : Infinite
- Is the measured value within specification?
YES
- Go to CHECK OPEN IN SIGNAL CIRCUIT procedure below.
NO
- Repair short in signal circuit, and go to "VERIFICATION OF VEHICLE REPAIR " procedure.
■ Check Open in Signal Circuit
- IG KEY OFF.
- Disconnect 'CRUISE REMOCON SWITCH' connector and Cluster connector.
- Measure resistance between 'Signal (Cruise sw)' terminal of 'CRUISE REMOCON SWITCH' harness connector and 'Signal (Cruise sw)' terminal of PCM connector.
Specification : Below 1.0Ω
- Is the measured value within specification?
YES
- Go to "COMPONENT INSPECTION " procedure.
NO
- Repair open between 'Signal (Cruise SW)' terminal of 'CRUISE REMOCON SWITCH' harness connector and 'Signal (Cruise sw)' terminal of PCM connector, and 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.