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Home >> Subaru >> 2019 >> BRZ Series.Gray >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (Diagnostics) (2 Of 3) >> EFI System (FA20) >> DTC P0506: ISC Valve Characteristic {1} Low; DTC P0507: ISC Valve Characteristic {1} High >> Circuit description >> Monitor Description
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Monitor Description

The ECM performs idle speed control (ISC) by monitoring the idle speed and airflow at idle. When the difference between the target engine idle speed and actual engine idle speed exceeds the threshold value for 30 seconds or more, the ECM judges it as an ISC system failure.

MONITOR STRATEGY

Related DTCs P0506: Idle speed control (ISC) functional check
P0507: Idle speed control (ISC) functional check
Required Sensors/Components (Main) Electronic throttle control system
Required Sensors/Components (Related) Crankshaft position sensor
E.F.I. water temperature sensor
Vehicle speed sensor
Frequency of Operation Continuous
Duration 15 seconds
MIL Operation 2 operation cycle
Sequence of Operation None
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