LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Kia >> 2006 >> Rio LX, Standard >> Repair and Diagnosis >> Engine Performance >> System >> DTC Troubleshooting Procedures (2 Of 2) >> DTC U0001 Can Communication Bus >> Component Inspection
October 30: LEMON manuals on a temporary server, it is slow and having issues, download the manuals you need! Later in November we will switch back to the fast server.

Component Inspection

  1. CAN BUS Terminus Resistance Check (Component side)
    1. Key "OFF".
    2. Disconnect ECM/PCM connector.
    3. Measure the resistance between terminal 12 and 27 of ECM/PCM connector. (Component side)

      Measure the resistance between terminal 84 and 62 of ECM/PCM connector. (Component side)

      Specification: 120 ± 10Ω

      Fig 1: Measuring Resistance Between Terminal 12 And 27 Of ECM/PCM Connector And Ground (A/T)
      G04862371Courtesy of KIA MOTORS AMERICA, INC.
      Fig 2: Measuring Resistance Between Terminal 84 And 62 Of ECM/PCM Connector
      G04862376Courtesy of KIA MOTORS AMERICA, INC.
    4. Is the measured resistance within specification?

      YES 

      • Fault is intermittent caused by poor contact in the sensor's and/or ECM/PCM's connector or was repaired and ECM/PCM memory was not cleared. Thoroughly check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage. Repair or replace as necessary and go to "VERIFICATION OF VEHICLE REPAIR " procedure.

      NO 

      • Substitute with a known - good ECM/PCM and check for proper operation.
      • If the problem is corrected, replace ECM/PCM and go to "VERIFICATION OF VEHICLE REPAIR " procedure.
      NOTE: There is a memory reset function on scantool that can erase optional parts automatically detected and memorized by ECM/PCM.
      Before or after testing ECM/PCM on the vehicle, use this function to reuse the ECM/PCM
scientia non olet · About LEMON Manuals