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DTC Troubleshooting

DIAGNOSTIC PROCEDURES 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.

Is there DTC(s) other than P2404? 		 Go to troubleshooting for applicable DTC(s). Go to Step 3.
3  EVAP leak detection pump and its circuit check 
  1. Check EVAP leak detection pump and its circuit according to Step 3 through 4 of DTC P2400  .

Are they in good condition? 		 Go to Step 7. Repair or replace defective wire harness.
4  EVAP vent valve circuit check 
  1. Check EVAP vent valve circuit according to Step 2 through 3 of DTC P0449  .

Are they in good condition? 		 Go to Step 5. Repair or replace defective wire harness.
5  EVAP leak check module check 
  1. Check EVAP leak detection pump, EVAP vent valve and EVAP leak check pressure sensor, see EVAP LEAK CHECK MODULE INSPECTION .

Are they in good condition? 		 Go to Step 6. Replace EVAP leak check module, see EVAP CANISTER REMOVAL AND INSTALLATION .
6  Wire harness check 
  1. Push engine switch to change ignition mode to "OFF"
  2. Check for proper terminal connection to "C01", "E01" and EVAP leak check module connectors.
  3. If connections are OK, perform DTC confirmation procedure and recheck DTC.

Is DTC P2404 detected again? 		 Replace ECM and recheck DTC, see ECM REMOVAL AND INSTALLATION . Intermittent trouble.
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