DTC P2420: EVAP System Switching Valve Control Circuit High: Notes
WARNING: This page is about a different variant/trim than selected.
1. -
DTC detecting condition:
Immediately at fault recognition
Wiring diagram:
Engine Electrical System Ref. to WIRING SYSTEM (CROSSTREK MODEL (HEV))>ENGINE ELECTRICAL SYSTEM .
CAUTION:
Use the check board when measuring the ECM terminal voltage and resistance. Ref. to ENGINE (DIAGNOSTICS) (H4DO (HEV))>GENERAL DESCRIPTION>PREPARATION TOOL>HOW TO USE CHECK BOARD
.
NOTE:
After the faulty parts are repaired or replaced, perform the final check in Basic Diagnostic Procedure. Ref. to ENGINE (DIAGNOSTICS) (H4DO (HEV))>BASIC DIAGNOSTIC PROCEDURE>PROCEDURE
.
- CHECK HARNESS BETWEEN ECM AND LEAK CHECK VALVE ASSEMBLY (SHORT TO POWER SUPPLY)
.
- Turn the ignition switch to OFF.
- Disconnect the connector from the leak check valve assembly.
- Turn the ignition switch to ON.
- Measure the voltage between leak check valve assembly and chassis ground.
Connector & terminal
(AD85) No. 1 (+) - Chassis ground (-):
Is the voltage 10 V or more?
Yes : Repair the short circuit to power in harness between ECM connector and leak check valve assembly connector.
No : Go to 2.
- CHECK LEAK CHECK VALVE ASSEMBLY
.
- Turn the ignition switch to OFF.
- Check the switching valve of the leak check valve assembly. Ref. to EMISSION CONTROL (AUX. EMISSION CONTROL DEVICES) (H4DO (HEV))>LEAK CHECK VALVE ASSEMBLY>INSPECTION>CHECK SWITCHING VALVE .
Is the check result OK?
Yes : Repair the poor contact in the leak check valve assembly connector.
No : Replace the leak check valve assembly. Ref. to EMISSION CONTROL (AUX. EMISSION CONTROL DEVICES) (H4DO (HEV))>LEAK CHECK VALVE ASSEMBLY .