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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  Fuel filler cap check 
  1. Check fuel filler cap is SUZUKI genuine parts and tightness.
  2. Check fuel filler cap gasket for uneven filler neck imprint, foreign material pinched and damage.
  3. Check fuel filler neck and fuel tank for installation, deformation and looseness.

Is result satisfactory? 		 Go to Step 3. Repair or replace defective part.
3  Pressurization test 
  1. Perform pressurization test, see EVAPORATIVE EMISSION SYSTEM LEAK INSPECTION .

Is any leak detected? 		 Go to Step 4. Go to Step 7.
4  Smoke test 
  1. Perform smoke test, see EVAPORATIVE EMISSION SYSTEM SMOKE TEST .

Is there any leak part? 		 Repair leaking and then go to Step 3 again. Go to Step 5.
5  EVAP canister purge valve check 
  1. Check EVAP canister purge valve, see EVAP CANISTER PURGE VALVE INSPECTION .

Is check result satisfactory? 		 Go to Step 6. Replace EVAP canister purge valve, see THROTTLE BODY AND INTAKE MANIFOLD COMPONENTS .
6  EVAP vent valve circuit and EVAP leak check pressure sensor circuit check 
  1. Check EVAP vent valve circuit and EVAP leak check pressure sensor circuit in EVAP leak check module, see EVAP LEAK CHECK MODULE INSPECTION .

Is check result satisfactory? 		 Go to Step 7. Replace EVAP leak check module, see THROTTLE BODY AND INTAKE MANIFOLD COMPONENTS .
7  EVAP vent valve and EVAP leak check pressure sensor check 
  1. Check EVAP vent valve and EVAP leak check pressure sensor in EVAP leak check module, see EVAP LEAK CHECK MODULE CIRCUIT INSPECTION .

Is check result satisfactory? 		 Go to Step 8. Replace EVAP leak check module, see THROTTLE BODY AND INTAKE MANIFOLD COMPONENTS .
8  Fuel level sensor and Its circuit check 
  1. Check fuel level sensor and its circuit, see DTC P0461 .

Are they in good condition? 		 Go to Step 9. Repair or replace defective parts or wire harness.
9  DTC recheck 
  1. Replace EVAP leak check module, see EVAP CANISTER REMOVAL AND INSTALLATION .
  2. Perform DTC confirmation procedure and check DTC.

Is DTC P0456 detected? 		 Replace ECM and recheck DTC, see ECM REMOVAL AND INSTALLATION . End.
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