ENGINE (DIAGNOSTICS)(H4DO) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)
DTC P2420 EVAP SYSTEM SWITCHING VALVE CONTROL CIRCUIT HIGH
DTC detecting condition:
Immediately at fault recognition
CAUTION:
After servicing or replacing faulty parts, perform Clear Memory Mode Clear Memory Mode > OPERATION">, and Inspection Mode Inspection Mode > PROCEDURE">.
Wiring diagram:
Engine electrical system Engine Electrical System">
STEP | CHECK | YES | NO |
1.CHECK HARNESS BETWEEN ECM AND LEAK CHECK VALVE ASSEMBLY CONNECTOR.
1) Turn the ignition switch to OFF.
2) Disconnect the connector from the leak check valve assembly.
3) Turn the ignition switch to ON.
4) Measure the voltage between leak check valve assembly and chassis ground.
Connector & terminal
(R400) No. 1 (+) — Chassis ground (−):
Is the voltage 10 V or more?
Repair the short circuit to power in harness between ECM connector and leak check valve assembly connector.
Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC P2420 EVAP SYSTEM SWITCHING VALVE CONTROL CIRCUIT HIGH">Go to Step 2.
2.CHECK LEAK CHECK VALVE ASSEMBLY.
1) Turn the ignition switch to OFF.
2) Check the switching valve of the leak check valve assembly. Leak Check Valve Assembly > INSPECTION">
Is the check result OK?
Repair the poor contact in the leak check valve assembly connector.
Replace the leak check valve assembly. Leak Check Valve Assembly">
1. OUTLINE OF DIAGNOSIS
Detect the open or short circuit in Evaporative Leak Check Module switching valve.
Judge as NG if out of specification.
2. COMPONENT DESCRIPTION
(1) | Leak check valve ASSY | (5) | Vacuum pump | (9) | Fuel tank |
(2) | Switching valve | (6) | Drain filter | (10) | Canister |
(3) | Reference orifice (0.02 inch orifice) | (7) | Purge control solenoid valve | ||
(4) | Pressure sensor | (8) | Intake manifold |
3. EXECUTION CONDITION
Secondary Parameters | Execution condition |
Battery voltage | ≥ 10.9 V |
Evaporative emission system switching valve command | ON |
4. GENERAL DRIVING CYCLE
Always perform the diagnosis continuously.
5. DIAGNOSTIC METHOD
If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.
Malfunction Criteria | Threshold Value |
Measured EVAP system switching valve current | ≥ 12 A |
Time Needed for Diagnosis: 2500 ms
Malfunction Indicator Light Illumination: Illuminates as soon as a malfunction occurs.
Removal
FUEL INJECTION (FUEL SYSTEMS)(H4DO) > Engine Coolant Temperature SensorREMOVAL1. Disconnect the ground cable from battery.2. Drain engine coolant. Engine Coolant > REPLACEMENT">3. Disconnect the connector (A) from the engine coolant temperature sensor, and remove the engine coolant te ...
Installation
EXTERIOR/INTERIOR TRIM > Rear BumperINSTALLATIONInstall each part in the reverse order of removal.CAUTION:Before installing the bumper face, match the claws on the bracket - rear bumper with the engaging position of flange section on the bumper face side. If the engaging position is not correct, ...
Inspection
FUEL INJECTION (FUEL SYSTEMS)(H4DO) > Manifold Absolute Pressure SensorINSPECTION1. Check that the manifold absolute pressure sensor has no deformation, cracks or other damages.2. Connect dry-cell battery positive terminal to terminal No. 3 and dry-cell battery ground terminal to terminal No. 1, ...