Repair Procedures: Inspection

1. The DCT system can be more quickly diagnosed for troubles by using the vehicle diagnostic system (KDS). (Refer to "DOUBLE CLUTCH TRANSMISSION SYSTEM DTCS ").

   KDS provides the following information. 

   1. Self diagnosis: Inspects and displays diagnostic trouble code (DTC)
   2. Sensor data: Checks the system input/output value status
   3. Forced operation: Checks the system operating status
   4. Additional function: Controls system options, zero point adjustment and other functions

Component inspection 

1. TCM ground circuit test: Measure resistance between TCM and chassis ground using the backside of TCM harness connector as TCM side check point.

   Specification:  Below 1Ω

2. TCM connector test: Disconnect the TCM connector and visually check the ground terminals on TCM side and harness side for bent pins or poor contact pressure.
3. If problem is not found in Steps 1 and 2, the TCM could be faulty. If so, replace the TCM with a new one, and then check the vehicle again. If the vehicle operates properly, then the problem was likely with the TCM.
4. The original TCM re-test: Install the original TCM (may be faulty) into a known-good vehicle and check the vehicle. If the problem occurs again, replace the original TCM with a new one. If problem does not occur, this is intermittent problem. If the problem does not occur, the problem was likely with other parts.