P0456 EVAP CONTROL SYSTEM
EC-319
< DTC/CIRCUIT DIAGNOSIS >
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DTC Confirmation Procedure
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NOTE:
• If DTC P0456 is displayed with P0442, first perform trouble diagnosis for DTC P0456.
• After repair, make sure that the hoses and clips are installed properly.
• If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at
least 10 seconds before conducting the next test.
TESTING CONDITION:
• Open engine hood before conducting the following procedure.
• If any of following conditions are met just before the DTC confirmation procedure, leave the vehicle
for more than 1 hour.
- Fuel filler cap is removed.
- Refilled or drained the fuel.
- EVAP component part/parts is/are removed.
• Before performing the following procedure, confirm that battery voltage is more than 11V at idle.
WITH CONSULT
1. Turn ignition switch ON and select “DATA MONITOR” mode with CONSULT.
2. Make sure the following conditions are met.
FUEL LEVEL SE: 0.25 - 1.4V
COOLAN TEMP/S: 0 - 32
°C (32 - 90°F)
FUEL T/TMP SE: 0 - 35
°C (32 - 95°F)
INT/A TEMP SE: More than 0
°C (32°F)
If NG, turn ignition switch OFF and leave the vehicle in a cool place (soak the vehicle), or refill/drain fuel
until the output voltage of the “FUEL LEVEL SE” meets within the range above and leave the vehicle for
more than 1 hour. Then start from step 1.
3. Turn ignition switch OFF and wait at least 10 seconds.
4. Turn ignition switch ON.
5. Select “EVP V/S LEAK P0456/P1456” of “EVAPORATIVE SYSTEM” in “DTC WORK SUPPORT” mode
with CONSULT.
Follow the instructions displayed.
6. Make sure that “OK” is displayed.
If “NG” is displayed, refer to
EC-320, "Diagnosis Procedure"
.
NOTE:
• If the engine speed cannot be maintained within the range displayed on CONSULT screen, go to
EC-117, "Basic Inspection"
.
• Make sure that EVAP hoses are connected to EVAP canister purge volume control solenoid
valve properly.
Overall Function Check
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WITH GST
Use this procedure to check the overall function of the EVAP very small leak function. During this check, a 1st
trip DTC might not be confirmed.
CAUTION:
• Never use compressed air, doing so may damage the EVAP system.
• Never start engine.
• Never exceeded 4.12 kPa (0.042 kg/cm
2
, 0.6 psi).
1. Attach the EVAP service port adapter (commercial service tool)
securely to the EVAP service port.
BBIA0620E