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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 EGR valve power supply circuit check 
  1. With ignition switch OFF, disconnect EGR valve coupler.
  2. With ignition switch ON, check EGR valve harness terminal voltage between "BLU/BLK" wire terminal "a" and ground, "BLU/BLK" wire terminal "b" and ground.
G04097411

Is each voltage 10 - 14 V? 		 Go to Step 3. Faulty "BLU/BLK" wire.
3 EGR valve stepping motor coil circuit check 
  1. With ignition switch OFF, connect EGR valve coupler and disconnect ECM couplers.
  2. Check resistance between "C51 -2-20" and "C51 -2-4", "C51-2-5", "C51-2-16", "C51-2-17".

Is each resistance 20 -24 Ω at 20 °C (68 °)? 		 Intermittent trouble or faulty ECM. Check for intermittent referring to "INTERMITTENT AND POOR CONNECTION INSPECTION ". "LT GRN", "LT GRN/ WHT", "LT GRN/RED", "LT GRN/YEL" wire open or faulty EGR valve.
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