Component Inspection

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)
  Courtesy of KIA MOTORS AMERICA, INC.
  
  Fig 2: Measuring Resistance Between Terminal 84 And 62 Of ECM/PCM Connector
  Courtesy 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