P1878

DTC P1878: Torque Converter Clutch Shudder

DTC Detecting Condition and Trouble Area






DTC Confirmation Procedure

1) Connect scan tool to DLC with ignition switch OFF.
2) Clear DTCs in TCM and ECM memories by using scan tool.
3) Start engine and warm it up to normal operating temperature.
4) Drive vehicle with 3rd or 4th gear in "D" range and slip controlled lock-up ON for 20 seconds or longer referring to "Automatic Gear Shift Table" in Road Test Road Test.
5) Stop vehicle.
6) Check DTC, pending DTC and freeze-frame data.

DTC Troubleshooting

1.
Was "A/T System Check" performed?
YES -
Go to Step 2.
NO -
Go to A/T System Check A/T System Check.

2. Change A/T fluid referring to Removal and Replacement A/T Fluid Change.
Check DTC after performing DTC Confirmation Procedure.

Is DTC P1878 still indicated?
YES -
Faulty torque converter clutch. Replace torque converter.
NO -
System is in good condition.