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Home >> Subaru >> 2015 >> WRX Base >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Diagnostic Trouble Code (DTC) Detecting Criteria (H4DOTC) (Except STI) >> Diagnostic Trouble Code (DTC) Detecting Criteria >> DTC P050A Cold Start Idle Air Control System Performance >> Enable Conditions

Enable Conditions

ENABLE CONDITIONS

Secondary Parameters Enable Conditions
<Idle speed diagnosis>
Atmospheric pressure ≥ 75 kPa (563 mmHg, 22.2 inHg)
Battery voltage ≥ 10.9 V
Vehicle speed ≤ 2 km/h (1.3 MPH)
Engine coolant temperature ≤ 75°C (167°F)
Intake air amount sum value < Value from Map
Elapsed time after gear position change (P ←→ D or N ←→ D) ≥ 3000 ms
Throttle opening angle < 0.312%
Elapsed time after starting the engine ≥ 2000 ms
<Final ignition timing diagnosis>
Atmospheric pressure ≥ 75 kPa (563 mmHg, 22.2 inHg)
Battery voltage ≥ 10.9 V
Vehicle speed ≤ 2 km/h (1.3 MPH)
Engine coolant temperature ≤ 75°C (167°F)
Intake air amount sum value < Value from Map
Elapsed time after gear position change (P ←→ D or N ←→ D) ≥ 3000 ms
Throttle opening angle < 0.312%
Target retard amount ≥ 10°CA

Map 

ENGINE COOLANT TEMPERATURE SPECIFICATION

Engine coolant temperature at engine starting °C (°F) -40 (-40) -30 (-22) -20 (-4) -10 (-14) 0 (32) 10 (50) 20 (68) 30 (86)
Intake air amount sum value g (oz) 723 (25.5) 723 (25.5) 603 (21.27) 683 (24.09) 710 (25.04) 687 (24.23) 570 (20.1) 607 (21.41)
ENGINE COOLANT TEMPERATURE SPECIFICATION

Engine coolant temperature at engine starting °C (°F) 40 (104) 50 (122) 60 (140) 70 (158) 75 (167)
Intake air amount sum value g (oz) 607 (21.41) 607 (21.41) 553 (19.5) 467 (16.47) 467 (16.47)