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Home >> Subaru >> 2019 >> WRX STI >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Control System (Diagnostics) (STI) (2 Of 4) >> Diagnostic Procedure with Diagnostic Trouble Code (DTC) >> DTC P050A: Cold Start Idle Control System Performance >> Execution Condition

Execution Condition

Secondary parameters Execution condition
<Idle speed diagnosis>
Battery voltage ≥ 10.9 V
Barometric pressure ≥ 75.1 kPa (563 mmHg, 22.2 inHg)
Vehicle speed ≤ 2km/h (1.2MPH)
Engine coolant temperature ≤ 60°C (140°F)
Throttle position < 0.37°
Integrated value of intake air amount < Value of Map 1
Elapsed time after starting the engine ≥ 2000 ms
<Final ignition timing diagnosis>
Battery voltage ≥ 10.9 V
Barometric pressure ≥ 75.1 kPa (563 mmHg, 22.2 inHg)
Engine coolant temperature ≤ 60°C (140°F)
Throttle position < 0.37°
Integrated value of intake air amount < Value of Map 2
Target retard amount ≥ 6°CA
TEMPERATURE SPECIFICATION - MAP 1

Engine coolant temperature at engine starting °C (°F) -40 (-40) -30 (-22) -20 (-4) -10 (14) 0 (32) 10 (50) 20 (68) 30 (86)
Integrated value of intake air amount (g (oz)) 950 (33.51) 925 (32.62) 900 (31.74) 870 (30.68) 840 (29.63) 620 (21.87) 420 (14.81) 310 (10.93)
Engine coolant temperature at engine starting °C (°F) 40 (104) 50 (122) 60 (140) 70 (158) 80 (176) 90 (194) 100 (212) 110 (230)
Integrated value of intake air amount (g (oz)) 260 (9.17) 210 (7.41) 170 (6) 170 (6) 170 (6) 170 (6) 170 (6) 170 (6)
TEMPERATURE SPECIFICATION - MAP 2

Engine coolant temperature at engine starting °C (°F) -40 (-40) -30 (-22) -20 (-4) -10 (14) 0 (32) 10 (50) 20 (68) 30 (86)
Integrated value of intake air amount (g (oz)) 950 (33.51) 925 (32.62) 900 (31.74) 870 (30.68) 840 (29.63) 620 (21.87) 420 (14.81) 310 (10.93)
Engine coolant temperature at engine starting °C (°F) 40 (104) 50 (122) 60 (140) 70 (158) 80 (176) 90 (194) 100 (212) 110 (230)
Integrated value of intake air amount (g (oz)) 260 (9.17) 210 (7.41) 170 (6) 170 (6) 170 (6) 170 (6) 170 (6) 170 (6)