Signal Circuit Inspection

■ Open Check 

1. Ignition "OFF" & Engine "OFF".
2. Disconnect TPMS ECU, PCM and ABS ECU connector.
3. Measure resistance between CAN HIGH, LOW terminal of the TPMS ECU harness connector and CAN HIGH, LOW terminal of the PCM harness connector.
4. Measure resistance between CAN HIGH, LOW terminal of the TPMS ECU harness connector and CAN HIGH, LOW terminal of the ABS ECU harness connector.
5. Measure resistance between Vehicle speed in terminal of the PCM harness connector and Vehicle speed out terminal of the ABS ECU harness connector.
6. Measure resistance between FR WSS Power terminal of the ABS ECU harness connector and FR WSS Power terminal of the FR WSS harness connector.
7. Measure resistance between FR WSS Signal terminal of the ABS ECU harness connector and FR WSS Signal terminal of the FR WSS harness connector.

   Specification  : 0

   Fig 1: Measuring Resistance Between FR WSS Signal Terminal And FR WSS Signal Terminal

   Courtesy of HYUNDAI MOTOR AMERICA
   Fig 2: TPMS ECU Connector Terminals

   Courtesy of HYUNDAI MOTOR AMERICA
8. Is the measured resistance within specifications?

   YES 

   • Faulty FR WSS, ABS ECU and PCM may cause this DTC.

   NO 

   • Substitute with a known-good component and check for proper operation. If problem is corrected, it's failure should cause this DTC. After doing an appropriate repair, Go to "VERIFICATION OF VEHICLE REPAIR " procedure.

     Repair in speed signal circuit between each control unit harness connector and TPMS receiver harness connector and then go to "VERIFICATION OF VEHICLE REPAIR " procedure.