Code 0111
SYSTEM DESCRIPTION
NOTE: If DTC P1447 is displayed with P0510, perform trouble diagnosis for DTC P0510 first.
In this evaporative emission (EVAP) control system, purge flow occurs during non-vehicle stopped conditions (M/T models) and non-closed throttle conditions. Purge volume is related to air intake volume. Under normal purge conditions (non-closed throttle), the EVAP canister purge volume control valve and EVAP canister purge control valve are open. Purge flow exposes the EVAP control system pressure sensor to intake manifold vacuum.
ON BOARD DIAGNOSIS LOGIC
Under normal conditions (non-closed throttle), sensor output voltage indicates if pressure drop and purge flow are adequate. If not, a fault is determined.
DTC CONFIRMATION PROCEDURE
CAUTION: Always drive vehicle at a safe speed.
NOTE: If "DTC Confirmation Procedure" has been previously conducted, always turn ignition switch "OFF" and wait at least 5 seconds before conducting the next test.
TESTING CONDITION: Always perform at a temperature above 5 °C (41 °F).
With CONSULT
1. Start engine and warm it up to normal operating temperature.
2. Turn ignition switch "OFF" and wait at least 5 seconds.
3. Start engine and let it idle for at least 1 minute.
4. Select "PURG CN/V & S/V P1493" of "EVAPORATIVE SYSTEM" in "DTC WORK SUPPORT" mode with CONSULT.
5. Touch "START".
6. When the following conditions are met, "TESTING" will be displayed on the CONSULT screen. Maintain the conditions continuously until "TESTING" changes to "COMPLETED". (It will take at least 30 seconds.)
If "TESTING" is not displayed after 5 minutes, retry from step 2.
7. Make sure that "OK" is displayed after touching "SELF-DIAG RESULTS" and go to the following step. If "NG" is displayed, refer to "Diagnostic Procedure" of DTC P1493.
8. Select "PURG VOL CN/V P1444" of "EVAPORATIVE SYSTEM" in "DTC WORK SUPPORT" mode with CONSULT.
9. Touch "START".
If "COMPLETED" is displayed, go to step 11.
10. When the following conditions are met, "TESTING" will be displayed on the CONSULT screen. Maintain the conditions continuously until "TESTING" changes to "COMPLETED". (It will take at least 20 seconds.)
If "TESTING" is not displayed after 5 minutes, retry from step 2.
11. Make sure that "OK" is displayed after touching "SELF-DIAG RESULTS" and go to the following step. If "NG" is displayed, refer to "Diagnostic Procedure" of DTC P1444.
12. Select "PURG FLOW P1447" of "EVAPORATIVE SYSTEM" in "DTC CONFIRMATION" mode with CONSULT.
13. Touch "START".
14. When the following conditions are met, "TESTING" will be displayed on the CONSULT screen. Maintain the conditions continuously until "TESTING" changes to "COMPLETED". (It will take at least 35 seconds.)
If "TESTING" is not displayed after 5 minutes, retry from step 2.
15. Make sure that "OK" is displayed after touching "SELF-DIAG RESULTS". If "NG" is displayed, refer to "Diagnostic Procedure".
Overall Function Check
Use this procedure to check the overall monitoring function of the EVAP control system purge flow. During this check, a 1st trip DTC might not be confirmed.
Without CONSULT
1. Start engine and warm it up to normal operating temperature.
2. Turn ignition switch "OFF", wait at least 5 seconds.
3. Start engine and wait at least 70 seconds.
4. Set voltmeter probes to ECM terminal 67 (EVAP control system pressure sensor signal) and ground.
5. Check EVAP control system pressure sensor value at idle speed.
6. Establish and maintain the following conditions for at least 1 minute.
Verify that EVAP control system pressure sensor value stays 0.1 V less than the value at idle speed for at least 1 second.
7. If NG, go to "Diagnostic Procedure".
1 CHECK EVAP CANISTER:
2 CHECK PURGE FLOW:
3 CHECK PURGE FLOW:
4 CHECK EVAP PURGE LINE:
5 CHECK EVAP PURGE HOSE AND PURGE PORT:
6 CHECK ONE-WAY VALVE:
7 CHECK EVAP CANISTER PURGE CONTROL SOLENOID VALVE:
8 CHECK EVAP CANISTER PURGE VOLUME CONTROL VALVE:
9 CHECK EVAP CANISTER PURGE CONTROL VALVE:
10 CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR HOSE:
11 CHECK HARNESS CONNECTOR:
12 CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR AND CIRCUIT:
13 CHECK EVAP CANISTER VENT CONTROL VALVE AND O-RING:
14 CHECK EVAP PURGE LINE:
15 CLEAN EVAP PURGE LINE:
16 CHECK INTERMITTENT INCIDENT:
DIAGNOSTIC PROCEDURE
COMPONENT INSPECTION
ONE-WAY VALVE
Check one-way valve air passage continuity.
If NG, replace one-way valve.
Make sure to install one-way valve with the colored side facing the vacuum.