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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

Inspection for PCM Power Circuit

  1. Turn IGN switch ON.
  2. Check the voltage value of the engine relay "ON" power terminal on the PCM side using a multi-tester.
  3. If the voltage is faulty, Inspection for wiring harness.
    List of Inspection Normal value Inspection Condition Probe (+) Probe (-)
    Engine Relay ON ↔ PCM supply power About 12V (battery voltage)
    1. IGN Switch "ON"
    		 PCM Connector side
    1. Main relay "ON" power     		 Chassis Ground 
    Engine Relay ON ↔ PCM
    supply power    		 PCM Connector side
    2. Main relay "ON" power     		 Chassis Ground 

    Information 

    Engine relay ON The faulty part according to the power cable inspection can be predicted as follows.

    Measurement Result Possible Cause
    When voltage is not output Wire break/"ECU1" fuse/"PCB-C" intermediate connector/PCB block needs to be checked
    When output below the specified voltage Battery check/Wiring check required
    At about 0V output Short to the wiring harness/ground (chassis)

    OK 

    Go to "Inspection for PCM Ground Circuit"  procedure.

    NG 

    Go to "Inspection for PCM Power Circuit Open/Short Circuit"  procedure.

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