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Home >> Suzuki >> 2007 >> Grand Vitara Base, AWD, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 65 (Engine General Information & Diagnosis) >> Diagnostic Information And Procedures >> DTC P1603: TCM Trouble Code Detected >> DTC Troubleshooting
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DTC Troubleshooting

WARNING: This page is about a different car, the 2008 Suzuki Grand Vitara. However, it is still accessible from the selected car via links, so may be relevant.
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 troubleshooting. Substitute a known good ECM and recheck.
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