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Home >> Suzuki >> 2009 >> Grand Vitara Base, Automatic >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Automatic Transmission - 4AT >> Diagnostic Information and Procedures >> DTC P0602/P1702: Control Module Programming Error/Internal Control Module Memory Check Sum Error >> DTC Troubleshooting
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DTC Troubleshooting

DTC TROUBLESHOOTING CHART

Step Action YES NO
1  DTC check 
  1. Clear DTC referring to DTC CLEARANCE  .
  2. Turn ignition switch to OFF position.
  3. Turn ignition switch to ON position and recheck DTC.

Is DTC P0602 or P1702 still detected? 		 Substitute a known-good TCM and recheck. Intermittent trouble. Check for intermittent referring to INTERMITTENT AND POOR CONNECTION INSPECTION .
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