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Home >> Hyundai >> 2025 >> Kona SEL, 4WD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System Diagnosis - 2.0 (14 Of 15) >> DTC P262B-00: Control Module Power Off Timer Performance >> DTC Inspection >> Inspection for PCM Power Circuit Open/Short Circuit

Inspection for PCM Power Circuit Open/Short Circuit

  1. Turn IGN Switch OFF.
  2. Disconnect the PCB block "PCB-C" connector and the PCM connector.
  3. Using a multi-tester, check the resistance of the power side terminal of the "PCB-C" connector and the body ground to check whether the wiring is short-circuited.
  4. Using a multi-tester, check the resistance between the "PCB-C" connector power side terminal and the PCM power terminal to check if the wiring is disconnected.
  5. Check the resistance to check for disconnection or short-circuiting of the wiring line on the PCM engine control relay ON power side.

    Information 

    If the resistance value is measured during short-circuit inspection, short-circuit with peripheral parts/wiring can be suspected. (wiring inspection section)

    While shaking the wiring, Inspection for short-circuit area through the change value of resistance.

    Information 

    If excessive resistance is measured during disconnection inspection, short-circuit with other wiring/wiring failure/intermediate connector failure are suspected.

    In this case, a problem could occur as normal voltage/current is not energized to the circuit.

    Locate the faulty part through inspection by section, and repair it.

    List of Inspection Normal value Inspection Condition Probe (+) Probe (-)
    PCB Block ↔ PCM
    Short to wiring harness    		 Infinity (∞) Ω
    1. IGN Switch "OFF"
    2. Separation of PCB block PCB-C connector
    3. Separation of PCM connector
    		 PCB Block PCB-C connector side
    2. Main relay "ON" power     		 Chassis Ground 
    List of Inspection Normal value Inspection Condition Probe (+) Probe (-)
    PCB Block ↔ PCM
    Open in wiring harness    		 Approx. 1Ω or below
    1. IGN Switch "OFF"
    2. Separation of PCB block PCB-C connector
    3. Separation of PCM connector
    		 PCB Block PCB-C connector side
    2. Main relay "ON" power     		 PCM Connector side
    1. Main relay "ON" power 
    PCB Block ↔ PCM
    Open in wiring harness    		 PCB Block PCB-C connector side
    2. Main relay "ON" power     		 PCM Connector side
    2. Main relay "ON" power 

    OK 

    Go to "Inspection for PCM Ground Circuit"  procedure.

    NG 

    Repair the wiring and replace the assembly.

    If there is no problem with the wiring, Inspection for PCM.

    Go to "Final DTC checking"  procedure.

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