Terminal and Connector Inspection

WARNING: This page is about a different variant/trim than selected.

Many malfunctions in the electrical system are caused by poor harness and terminals. Faults can also be caused by interference from other electrical systems, and mechanical or chemical damage.
Thoroughly check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage.
Has a problem been found?
YES
- Repair as necessary and go to VERIFICATION OF VEHICLE REPAIR .
NO
- Go to "CAN Communication Circuit Inspection (VDC/ESC ECM ↔ 4WD ECM) ".

CAN Communication Circuit Inspection (VDC/ESC ECM ↔ 4WD ECM)
1. Ignition "OFF"
2. Disconnect 4WD ECM connector and VDC/ESC ECM connector.
3. Measure the resistance between CAN-HIGH terminal of 4WD ECM harness connector and CAN-HIGH terminal of VDC/ESC ECM harness connector.
4. Measure the resistance between CAN-LOW terminal of 4WD ECM harness connector and CAN-LOW terminal of VDC/ESC ECM harness connector.
  Specification: below 1 Ω
  
  Fig 1: Measuring Resistance Between CAN-HIGH Terminal Of 4WD ECM Connector And CAN-HIGH Terminal Of VDC/ESC ECM Connector
  Courtesy of HYUNDAI MOTOR CO.
  
  Fig 2: Identifying PCM And 4WD ECM Connectors Terminals
  Courtesy of HYUNDAI MOTOR CO.
5. Is the measured resistance within specification?
  YES
  - Substitute with a known - good ECM and check for proper operation. If the problem is corrected, replace ECM and go to VERIFICATION OF VEHICLE REPAIR .
  NO
  - Check for open/short in harness.
  - Repair as necessary and then go to VERIFICATION OF VEHICLE REPAIR .