Kia Optima Hybrid: Evaporative Emission Control System / 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 the ECM/PCM ...

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 rear suspension damper ...

Other information:

Kia Optima Hybrid (TF HEV) 2016-2020 Service Manual: High Voltage Shut-off Procedures


High Voltage Shut-off Procedures     Be sure to read and follow the “General Safety Information and Caution” before doing any work related with the high voltage system. Failure to follow the safety instructions may result in serious electrical injuries.     • High voltage components: ...

Kia Optima Hybrid (TF HEV) 2016-2020 Service Manual: Accelerator Position Sensor (APS) Repair procedures


Inspection 1. Connect the GDS on the Data Link Connector (DLC). 2. Turn the ignition switch ON. 3. Measure the output voltage of the APS 1 and 2 at C.T and W.O.T. AcceleratorPositionOutput Voltage (V)APS1APS2C.T0.7 ~ 0.80.29 ~ 0.46W.O.T3.85 ~ 4.351.93 ~ 2.18 ...

© 2024 Copyright www.koptimatfhev.com