Signal Circuit Inspection

Check open in harness
1. IG "OFF" and disconnect battery sensor and ECM connector.
2. Check resistance between LIN terminal of battery sensor harness Connector and ECM harness connector.
  Specification: Below 1.0Ω
  
  Fig 1: Checking Resistance Between LIN Terminal Of Battery Sensor Harness Connector And ECM Harness Connector
  Courtesy of HYUNDAI MOTOR AMERICA
3. Is the measured resistance within specification?
  YES
  - Go to " 2 Check short to battery in harness" as follows.
  NO
  - Repair open in harnesses and go to "VERIFICATION OF VEHICLE REPAIR ".
Check short to battery in harness
1. IG "OFF" and disconnect battery sensor and ECM connector.
2. IG "ON"
3. Measure the voltage between LIN terminal of battery sensor harness connector and chassis ground.
  Specification: Approx. 0V
  
  Fig 2: Measuring Voltage Between LIN Terminal Of Battery Sensor Harness Connector And Chassis Ground
  Courtesy of HYUNDAI MOTOR AMERICA
4. Is the measured voltage within specification?
  YES
  - Go to " 3 Check short to ground in harness" as follows.
  NO
  - Repair short to battery in harnesses and go to "VERIFICATION OF VEHICLE REPAIR ".
Check short to ground in harness
1. IG "OFF" and disconnect battery sensor and ECM connector.
2. Check resistance between LIN terminal of battery sensor harness Connector and chassis ground.
  Specification: Infinity
  
  Fig 3: Checking Resistance Between LIN Terminal Of Battery Sensor Harness Connector And Chassis Ground
  Courtesy of HYUNDAI MOTOR AMERICA
3. Is the measured resistance within specification?
  YES
  - Go to "COMPONENT INSPECTION " as follows.
  NO
  - Repair short to ground in harnesses and go to "VERIFICATION OF VEHICLE REPAIR ".