DTC Troubleshooting
DTC TROUBLESHOOTING PROCEDURES
| 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 |
Barometric pressure (EVAP leak check pressure) sensor check
- Check EVAP leak check pressure sensor for performance referring to "EVAP Leak Check Pressure Sensor (combine with BARO sensor) Inspection" under EVAP LEAK CHECK MODULE INSPECTION
.
Are they in good condition?
|
Go to Step 3. |
Replace EVAP leak check module. |
| 3 |
EVAP system check
- Check the following parts for clogged.
- EVAP canister
- EVAP canister air suction filter
- EVAP passage
- EVAP vent valve in EVAP leak check module
Are they in good condition?
|
Go to Step 4. |
Clean, repair or replace. |
| 4 |
Wire harness check
- Check EVAP leak check pressure circuit referring to step 3 of DTC P2228 / P2229: BAROMETRIC PRESSURE CIRCUIT LOW / HIGH (EVAP LEAK CHECK MODEL) .
Is it in good condition?
|
Substitute a known-good ECM and recheck. |
Repair or replace defective wire harness. |