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Home >> Hyundai >> 2025 >> Kona SEL, 4WD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System Diagnosis - 2.0 (10 Of 15) >> DTC P0603-00: Internal Control Module Keep Alive Memory (KAM) Error >> DTC Inspection >> Inspection For PCM Ground Circuit

Inspection For PCM Ground Circuit

  1. Turn IGN switch ON.
  2. Check ground terminal of PCM using multi-tester.
  3. Check the PCM ground terminal voltage value.
  4. If the voltage is faulty, Inspection For wiring harness.
    List of Inspection Normal value Inspection Condition Probe (+) Probe (-)
    PCM Ground Approx. 0V
    1. IGN Switch "OFF"
    2. Disconnect the PCM connector
    		 PCM Connector side
    3. Ground     		 Chassis Ground 
    PCM Connector side
    4. Ground     		 Chassis Ground 

Information 

The failure part according to the PCM ground wire inspection can be expected as follows:

Measurement Result Possible Cause
When voltage is not output Wiring disconnection/Need to check GC201 ground terminal

OK 

Go to "Final DTC Checking"  procedure

NG 

Go to "Inspection For Open In PCM Ground Circuit"  procedure.

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