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DTC P0507 IDLE CONTROL SYSTEM RPM HIGHER THAN EXPECTED

DTC P0507 IDLE CONTROL SYSTEM RPM HIGHER THAN EXPECTED

OUTLINE OF DIAGNOSIS

Detect the malfunction that actual engine speed is not close to target engine speed during idling.

Judge NG when actual engine speed is not close to target engine speed during idling.

ENABLE CONDITION

Secondary Parameters Enable Conditions
Engine coolant temperature

≥ 70°C (158°F)

Battery voltage

≥ 10.9 V

Atmospheric pressure

> 75.1 kPa (563 mmHg, 22.2 inHg)

Fuel level

≥ 9.6 litres (2.54 US gal, 2.11 Imp gal)

After engine starting

≥ 10.5 seconds

Feedback in ISC

In operation

Lambda

0.81 ←→ 1.1

After air condition switching ON-OFF, OFF-ON

> 5.1 seconds

After in-manifold pressure change more than 4 kPa (30 mmHg, 1.2 inHg)

> 5.1 seconds

After neutral switch ON-OFF event

> 5.1 seconds

Vehicle speed

0 km/h (0 MPH)



GENERAL DRIVING CYCLE

Always perform diagnosis during idling after engine warmed.

DIAGNOSTIC METHOD

Abnormality Judgment

Judge NG when the continuous time of completing the malfunction criterion below becomes more than the time needed for diagnosis (10 seconds × 3 times).

Judgment Value

Malfunction Criteria Threshold Value
Actual − target eng. speed

≥ 200 rpm

Feedback correction for idle air control solenoid valve

Min.



Time Needed for Diagnosis: 10 seconds × 3 times

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

Normality Judgment

Judge OK and clear NG when the continuous time of completing the malfunction criterion below becomes more than the time needed for diagnosis (10 seconds).

Judgment Value

Malfunction Criteria Threshold Value
Actual − target eng. speed

< 200 rpm



DTC CLEAR CONDITION


When the OK idling cycle was completed 40 times in a row

When “Clear Memory” was performed


MALFUNCTION INDICATOR LIGHT CLEAR CONDITION


When the OK driving cycle was completed 3 times in a row



When “Clear Memory” was performed


FAIL SAFE

None

ECM OPERATION AT DTC SETTING

Memorize the freeze frame data. (For test mode $02)