Mike's Workshop Manuals: Service manuals for every vehicle
Home >> Hyundai >> 2021 >> Veloster N Standard Trans >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System Diagnosis (3 Of 3) >> DTC P2123-00: Accelerator Position Sensor 1 Signal Circuit High Input >> Wiring Inspection >> Signal Circuit Inspection

Signal Circuit Inspection

Check Item Specifications Prerequisite Condition Terminal (+) Terminal (-)
Signal Circuit for short to Power - Voltage Approx. 0V
  1. Disconnect APS connector
  2. Ignition SW 'ON'
APS1 signal terminal of APS harness Chassis GND
  1. Is voltage within specification?

    YES 

    • Go to next procedure.

    NO 

Check Item Specifications Prerequisite Condition Terminal (+) Terminal (-)
Ground Circuit for open - Resistance Below 1Ω
  1. Ignition SW 'OFF'
  2. Disconnect APS & ECM connector
Both ends of APS1 Ground lines between ECM and APS harness
  1. Is resistance within specification?

    YES 

    • Go to next procedure.

    NO