Subaru Crosstrek Service Manual: Dtc p0506 idle control system rpm - lower than expected

Subaru Crosstrek Service Manual / Engine (diagnostics)(h4do) / Diagnostic procedure with diagnostic trouble code (dtc) / Dtc p0506 idle control system rpm - lower than expected

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

DTC P0506 IDLE CONTROL SYSTEM RPM - LOWER THAN EXPECTED

DTC DETECTING CONDITION:

Detected when two consecutive driving cycles with fault occur.

TROUBLE SYMPTOM:

• Hard to start the engine.

• Engine does not start

• Improper idling

• Engine stall

CAUTION:

After servicing or replacing faulty parts, perform Clear Memory Mode Clear Memory Mode > OPERATION">, and Inspection Mode Inspection Mode > PROCEDURE">.

STEP	CHECK	YES	NO

1.CHECK FOR ANY OTHER DTC ON DISPLAY.

Is any other DTC displayed?

Check the appropriate DTC using the “List of Diagnostic Trouble Code (DTC)”. List of Diagnostic Trouble Code (DTC)">

Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC P0506 IDLE CONTROL SYSTEM RPM - LOWER THAN EXPECTED">Go to Step 2.

2.CHECK AIR CLEANER ELEMENT.

1) Turn the ignition switch to OFF.

2) Check the air cleaner element.

Is there excessive clogging on air cleaner element?

Replace the air cleaner element. Air Cleaner Element">

Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC P0506 IDLE CONTROL SYSTEM RPM - LOWER THAN EXPECTED">Go to Step 3.

3.CHECK ELECTRONIC THROTTLE CONTROL.

1) Remove the electronic throttle control. Throttle Body > REMOVAL">

2) Check the electronic throttle control.

Are foreign matter found inside electronic throttle control?

Remove foreign matter from electronic throttle control.

Perform the diagnosis of DTC P2101. Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC P2101 THROTTLE ACTUATOR "A" CONTROL MOTOR CIRCUIT RANGE/PERFORMANCE">

1. OUTLINE OF DIAGNOSIS

Detect the malfunction that actual engine speed is not close to target engine speed during idling. Judge as NG when actual engine speed is not close to target engine speed during idling.

2. EXECUTION CONDITION

Secondary parameters	Execution condition
Battery voltage	≥ 10.9 V
Barometric pressure	≥ 75.1 kPa (563 mmHg, 22.2 inHg)
Lambda value (left and right)	≥ 0.85 and < 1.151
Vehicle speed	0 km/h (0 MPH)
Engine coolant temperature	≥ 60 °C (140 °F)
Elapsed time after starting the engine	≥ 10 s
Accelerator pedal position	While idling
Elapsed time after gear position change (P ←> D or N ←> D)	> 5 s
Cold start diagnosis	Not in operation
Main feedback	In operation
Idle speed control feedback	In operation

3. GENERAL DRIVING CYCLE

Perform the diagnosis continuously at idling after warming up engine.

4. 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
Actual engine speed − Targeted engine speed	< −100 rpm

Time needed for diagnosis: 15 s ? 1 time(s)

Malfunction indicator light illumination: Illuminates when malfunction occurs in 2 continuous driving cycles.

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 ...

Dtc p0507 idle control system rpm - higher than expected

ENGINE (DIAGNOSTICS)(H4DO) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)DTC P0507 IDLE CONTROL SYSTEM RPM - HIGHER THAN EXPECTEDDTC DETECTING CONDITION:Detected when two consecutive dri ...

Other materials:

Engine hood
CAUTION Exercise extreme caution when closing the engine hood of your Subaru Ascent to avoid trapping fingers or other objects, which may lead to injury. Do not apply excessive force when closing the hood. Forcing it down may deform the metal structure and affect proper alignment. Be e ...

Dtc b2a05 left speaker/audio circuit
TELEMATICS SYSTEM (DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)DTC B2A05 LEFT SPEAKER/AUDIO CIRCUITDiagnosis start condition:When ACC is ON.DTC detecting condition:Speaker impedance is more than 10 k? for 100 ms. (Detached speaker connection, etc.)Trouble symptom:• ...

Inspection
CONTINUOUSLY VARIABLE TRANSMISSION(TR580) > Secondary Pressure SensorINSPECTION1. Start and warm up the engine.2. Depress the brake pedal, and shift the select lever to “D” range.3. Shift the select lever to “P” or “N” range.4. Depress the brake pedal and hold ...