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DTC Troubleshooting

WARNING: This page is about a different car, the 2010 Suzuki Kizashi. However, it is still accessible from the selected car via links, so may be relevant.
DTC TROUBLESHOOTING CHART

Step Action YES NO
1  DTC recheck 
  1. Clear DTC, see DTC CLEARANCE .
  2. Confirm that ignition mode of keyless push start system is "OFF".
  3. Perform DTC CONFIRMATION PROCEDURE , and check DTC.

Is DTC P0602 still detected? 
Go to Step 2. Check for intermittent trouble, see INTERMITTENT CONNECTION AND POOR CONTACT INSPECTION .
2  TCM reprogramming check 
Was reprogramming of TCM executed? 
Execute reprogramming of TCM correctly once again. Go to Step 3.
3  TCM power supply and ground circuits check 
  1. Check TCM power supply and ground circuits, see TCM Power Supply and Ground Circuit Check .

Are they in good condition? 
Substitute a known-good TCM and recheck DTC, see Transmission Control Module (TCM) Removal and Installation  Repair or replace defective wire harness.