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. (C01-2) (Component side)
  Measure the resistance between terminal 84 and 62 of ECM/PCM connector. (C01) (Component side)
  
  Specification: 120 ± 10Ω
  
  Fig 1: Measuring Resistance Between Terminal 12 & 27/C01-2 Of PCM Connector & Chassis Ground (A/T)
  Courtesy of HYUNDAI MOTOR CO.
  
  Fig 2: Measuring Resistance Between Terminal 84 & 62/C01 Of ECM Connector & Chassis Ground (M/T)
  Courtesy of HYUNDAI MOTOR CO.
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.