Monitor Scantool Data

IG "ON" & Engine "OFF".
Connect Scan tool and clear the DTCs.

Fig 1: Scantool Display - DTC
Courtesy of HYUNDAI MOTOR AMERICA
Is DTC P1679 displayed again?
YES
- Fault is intermittent caused by poor contact in ICU's and/or PCM connector or was repaired and PCM memory was not cleared. Therefore, Check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage. Repair or replace as necessary and then go to "Verification of Vehicle Repair " procedure.
NO
- Substitute with a known-good ICU and/or PCM and check for proper operation. and then go to "Verification of Vehicle Repair " procedure.
- After replacing ICU and/or PCM, perform Key teaching procedure with scantool.