System Inspection

System Inspection

Canister Air-Filter inspection
1. Disassemble the Canister Air-Filter and hose from their respective positions.
2. Check the Canister air-filter for contamination.
3. Is Canister Air-Filter contaminated with dust ?
YES
1) Replace as necessary and go to "Verification of Vehicle Repair" procedure
NO
1) Go to "Canister Closing Valve (CCV) inspection" procedure
Canister Closing Valve (CCV) inspection
1. Reconnect all EVAP hardware that was previously disconnected
2. Disconnect hose connecting Canister Closing Valve (CCV) to canister
3. Ignition "ON" & Engine "OFF"
4. Blow air to the canister side of the valve and verify air escapes to the air filter side.
5. Install scantool and select "CANISTER CLOSE VALVE" on the Actuation Test mode
6. Activates "CANISTER CLOSE VALVE" by pressing "STRT (F1)" key
7. Blow air into hose and verify air does not escape.
8. Repeat this procedure 4 or 5 times to ensure CCV reliability.
9. Is CCV working properly ?

CAUTION:
If hose was pinched or restricted:
- Fueling would be difficult if not impossible.
- Restriction or blockage could cause pressure to accumulate in tank triggering a P0451.

YES
1) Check for poor connection between ECM and component: backed out terminal, improper mating, broken locks or poor terminal to wire connection. Repair as necessary and go to "Verification of Vehicle Repair" procedure
NO
1) If CCV was stuck closed, inspect all lines and canister for liquid fuel. Replace any contaminated components and blow out lines. Check CCV for contamination, deterioration, or damage. Substitute with a known-good CCV and check for proper operation. If the problem is corrected, replace CCV and then go to "Verification of Vehicle Repair" procedure.