Kia Optima: Repair procedures
| Inspection |
When the engine is shut off, the pressure change in the fuel
tank by the ambient temperature is monitored by NVLD and when the engine
is started, ECM judges whether there is a leak or not through the
monitored data.
If a leak is detected, ECM displays DTC P0455 or P0456.
| Process overview |
If a leak is detected by NVLD, inspect the vehicle as the
flow chart below to distinguish whether the error was caused by leakage
of fuel system or NVLD itself.
| Leakage Test with FTPS(Fuel Tank Pressure Sensor) |
If a leak is detected by NVLD, leakage test with FTPS is
performed more than 3~5 times to check tank system components. This test
is only for production line or service shop to check where the real
cause(NVLD or fuel system) of DTC P0455 or P0456 is.
| 1. |
Turn the ignition switch OFF. |
| 2. |
Connect the GDS to Data Link Connector (DLC). |
| 3. |
Start the engine. |
| 4. |
Select “Vehicle, Model year, Engine, System”. |
| 5. |
Select “Vehicle S/W Management”. |
| 6. |
Select “Inspection / Test”. |
| 7. |
Select “Evap. Leak Test” |
| 8. |
Perform the test in accordance with the image below. |
Schematic Diagrams
Schematic Diagram
Canister
The Canister is filled with charcoal and absorbs evaporated
fuel vapor from the fuel tank. The gathered fuel vapor in canister is
drawn into the intake manifold by t ...
Canister Repair procedures
Removal
1.
Turn the ignition switch OFF and disconnect the auxiliary battery 12 (V) negative (-) terminal.
2.
Lift the vehicle.
3.
Remove the rear muffler hanger (A).
4.
Remove the re ...
See also:
Engine Temperature Gauge
This gauge shows the temperature of the engine coolant when the ignition switch
is ON.
If the gauge pointer moves beyond the normal range area toward the H position,
it indicates overheating that ...
Inspection
1.
Check the hands free remote control
switch for resistance between terminals in each switch position.
Switch
Connector
terminal
...
Output Speed Sensor. Troubleshooting
Signal Waveform
Fig 1) Input/Output speed sensor at low speedFig 2) Input/Output speed sensor
at high speed
...
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