Subaru Crosstrek Service Manual: Dtc p2402 evap system leak detection pump control circuit high
ENGINE (DIAGNOSTICS)(H4DO) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)
DTC P2402 EVAP SYSTEM LEAK DETECTION PUMP 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. 4 (+) — 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 P2402 EVAP SYSTEM LEAK DETECTION PUMP CONTROL CIRCUIT HIGH">Go to Step 2.
2.CHECK LEAK CHECK VALVE ASSEMBLY.
1) Turn the ignition switch to OFF.
2) Check the vacuum pump 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 vacuum pump.
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 |
Measured EVAP system leak detection pump current | ≥ 12 A |
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 |
Battery voltage | ≥ 10.9 |
Terminal output voltage when ECM outputs ON signal | High |
Time Needed for Diagnosis: 2500 ms
Malfunction Indicator Light Illumination: Illuminates as soon as a malfunction occurs.
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Other materials:
Power saving function
The keyless access function will be
disabled in the following cases to protect
the access key battery and the vehicle
battery.
Case 1: When the keyless access function and the remote keyless entry
system have not been used for 2 weeks
or longer while all doors are locked
To recover the ...
Tachometer
The tachometer shows the engine speed
in thousands of revolutions per minute.
CAUTION
Do not operate the engine with the
pointer of the tachometer in the red
zone. In this range, fuel injection will
be cut by the engine control module
to protect the engine from overrevving.
The engine will ...
To help prevent corrosion
Wash the vehicle regularly to prevent
corrosion of the body and suspension
components. Also, wash the vehicle
promptly after driving on any of the
following surfaces.
roads that have been salted to prevent
them from freezing in winter
mud, sand, or gravel
coastal roads
After the win ...
