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Home › Suzuki › 2006 › Grand Vitara Base, RWD, Automatic › Repair and Diagnosis › Engine Performance › Engine Control Systems › Engine General Information And Diagnosis › Diagnostic Information And Procedures › DTC P1603: TCM Trouble Code Detected › DTC Troubleshooting

DTC Troubleshooting

DTC TROUBLESHOOTING CHART

Step Action YES NO
1  Was "Engine and Emission Control System Check" performed?  Go to Step 2. Go to ENGINE AND EMISSION CONTROL SYSTEM CHECK .
2  DTC check 
  1. Check DTC of TCM referring to DTC CHECK .

Is there any DTC(s)? 		 Go to applicable DTC diagnostic flow chart. Substitute a known-good ECM and recheck.
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