Kia Optima Hybrid: Engine Control System / NVLD(Natural Vacuum Leakage Detection) Repair procedures
| Removal |
| 1. |
Turn the ignition switch OFF and disconnect the battery negative (-) terminal. |
| 2. |
Disconnect the NVLD connector (A). |
| 3. |
Disconnect the ventilation hoses (B,C).
|
| 4. |
Remove the NVLD after by loosening the bolts (A).
|
| Installation |
| • |
Install the component with the specified torques. |
| • |
Note that internal damage may occur when the component is dropped.
If the component has been dropped, inspect before installing.
|
| 1. |
Install in the reverse order of removal. |
NVLD mounting bolt:
2.3 ~ 3.3 N.m (0.2 ~ 0.3 kgf.m, 1.7 ~ 2.5 lb-ft) |
| Inspection |
| 1. |
Turn ignition switch OFF. |
| 2. |
Disconnect the NVLD connector. |
| 3. |
Remove the NVLD. |
| 4. |
Connect the hose (A) to the canister hose connected port as below. |
| 5. |
After immersing the hose (A) in water, Apply more than 6 mbar (positive) pressure to Atmosphere port (B). |
| 6. |
If the NVLD is normal, many bubbles will indicate large leak.
|
| 1. |
Connect power supply line and ground line to the NVLD terminals as below. |
| 2. |
Measure current between the NVLD terminal 1 and battery (+) terminal during NVLD switch open. |
| 3. |
Measure current between the NVLD terminal 1 and battery (+) terminal during NVLD switch closed. |
| 4. |
Measure current between the NVLD terminal 2 and battery (+) terminal during NVLD switch open. |
| 5. |
Check the current is within the specification.
|
NVLD(Natural Vacuum Leakage Detection) Schematic Diagrams
Circuit Diagram ...
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Description Canister Close Valve (CCV) is installed on the canister ventilation line. It seals evaporative emission control system by shutting the canister from the atmosphere when leakage detecting system ...
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