Subaru Crosstrek manuals

Subaru Crosstrek Service Manual: Dtc p0459 evap system (cpc) purge control valve "a" circuit high

ENGINE (DIAGNOSTICS)(H4DO) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)

DTC P0459 EVAP SYSTEM (CPC) PURGE CONTROL VALVE "A" CIRCUIT HIGH

DTC detecting condition:

Detected when two consecutive driving cycles with fault occur.

Trouble symptom:

Improper idling

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">

STEPCHECKYESNO

1.CHECK HARNESS BETWEEN ECM AND PURGE CONTROL SOLENOID VALVE CONNECTOR.

1) Turn the ignition switch to OFF.

2) Disconnect the connector from ECM.

3) Disconnect the connector from the purge control solenoid valve.

4) Turn the ignition switch to ON.

5) Measure the voltage between ECM connector and chassis ground.

Connector & terminal

(B134) No. 11 (+) — Chassis ground (−):

Is the voltage 10 V or more?

Repair the short circuit to power in the harness between ECM connector and purge control solenoid valve connector.

Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC P0459 EVAP SYSTEM (CPC) PURGE CONTROL VALVE "A" CIRCUIT HIGH">Go to Step 2.

2.CHECK PURGE CONTROL SOLENOID VALVE.

1) Turn the ignition switch to OFF.

2) Measure the resistance between purge control solenoid valve terminals.

Terminals

No. 1 — No. 2:

Is the resistance less than 1 ??

Replace the purge control solenoid valve. Purge Control Solenoid Valve">

Repair the poor contact of ECM connector.

1. OUTLINE OF DIAGNOSIS

Detect open or short circuit of the purge control solenoid valve.

Judge as NG when the ECM output level differs from the actual terminal level.

2. COMPONENT DESCRIPTION

(A)

To canister

(B)

To intake manifold

3. EXECUTION CONDITION

Secondary Parameters

Execution condition

12 V battery system voltage

≥ 10.9 V

Purge control duty ratio

≥ 25%

4. GENERAL DRIVING CYCLE

Always perform the diagnosis after starting the engine.

5. DIAGNOSTIC METHOD

If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.

Judgment Value

Malfunction Criteria

Threshold Value

Measured solenoid valve for purge control current

≥ 12 A

Time Needed for Diagnosis: 2500 ms

Malfunction Indicator Light Illumination: Illuminates when malfunction occurs in 2 continuous driving cycles.

Dtc p0458 evap system (cpc) purge control valve "a" circuit low
ENGINE (DIAGNOSTICS)(H4DO) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)DTC P0458 EVAP SYSTEM (CPC) PURGE CONTROL VALVE "A" CIRCUIT LOWDTC detecting condition:Detected when tw ...

Dtc p0500 vehicle speed sensor "a" circuit
ENGINE (DIAGNOSTICS)(H4DO) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)DTC P0500 VEHICLE SPEED SENSOR "A" CIRCUITDTC DETECTING CONDITION:Immediately at fault recognitionCAUTI ...

Other materials:

Locking and unlocking
Release button Mechanical key While pressing the release button of the access key, take out the mechanical key. Lock or unlock the driver's door with the mechanical key in the procedure described in "Locking and unlocking from the outside" F2-5. NOTE After locking or unlocking, ...

Installation
LIGHTING SYSTEM > Headlight AssemblyINSTALLATIONCAUTION:Install so that the front end of the under cover (b) comes inside the bumper face - front (a), and the front end of the mud guard (c) comes outside the bumper face - front (a).1. Install each part in the reverse order of removal.Tightening t ...

Dtc c0038 rl pressure reducing valve malfunction
VEHICLE DYNAMICS CONTROL (VDC) (DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)DTC C0038 RL PRESSURE REDUCING VALVE MALFUNCTIONNOTE:For the diagnostic procedure, refer to “C0064 NORMAL CLOSING VALVE 2 MALFUNCTION”. Diagnostic Procedure with Diagnostic Trouble C ...

© 2016-2021 Copyright www.sucross.com