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Home >> Hyundai >> 2016 >> Santa Fe XL Base >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Control System Diagnosis (3 Of 3) >> DTC P2122: Accelerator Position Sensor 1 Signal Circuit Low Input >> Wiring Inspection >> Signal Circuit Inspection
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Signal Circuit Inspection

■ Check short to ground in harness 

  1. IG "OFF".
  2. Disconnect APS connector and PCM connector.
  3. Measure resistance between APS 1 signal terminal of APS harness connector and chassis ground. (Measurement "A")
  4. Measure resistance between APS 1 signal and APS 1 (2) ground terminals of APS harness connector. (Measurement "B")

    Specification:  Infinite

  5. Is the measured resistance within specification?

    YES 

    • Go to "Check open in harness" as follows.

    NO 

■ Check open in harness 

  1. IG "OFF". Disconnect APS connector and PCM connector.
  2. Measure resistance between APS 1 signal terminal of APS harness connector and APS 1 signal terminal of PCM harness connector.

    Specification:  Approx. below 1Ω.

  3. Is the measured resistance within specification?

    YES 

    • Go to "Component Inspection" procedure below.

    NO