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Home >> Subaru >> 2024 >> BRZ tS >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (Diagnostics) (2 Of 4) >> Diagnostic Procedure with Diagnostic Trouble Code (DTC) >> DTC P050A: Cold Start Idle Control System Performance >> General Description >> Execution Condition

Execution Condition

SECONDARY PARAMETERS AND EXECUTION CONDITION - IDLE SPEED DIAGNOSIS

Secondary parameters Execution condition DTC
Battery voltage 10.9 V or more P050A
Barometric pressure 75.1 kPa (563 mmHg, 22.2 inHg) or more
Vehicle speed 2 km/h (1.2MPH) or less
Throttle position Less than 0.25°
Integrated value of intake air amount Less than value of Map1
Elapsed time after gear position change (P ←→ D or N ←→ D) 2000 ms or more
Elapsed time after starting the engine 2000 ms or more
SECONDARY PARAMETERS AND EXECUTION CONDITION - FINAL IGNITION TIMING DIAGNOSIS (IDLE)

Secondary parameters  Execution condition  DTC 
Battery voltage 10.9 V or more P050B
Barometric pressure 75.1 kPa (563 mmHg, 22.2 inHg) or more
Throttle position Less than 0.25°
Integrated value of intake air amount Less than value of Map2
Elapsed time after gear position change
(P ←→ D or N ←→ D)
2000 ms or more
Target retard amount (N range) Value of Map3 or less
Target retard amount (D range) Value of Map4 or less
TEMPERATURE SPECIFICATION - MAP 1

Coolant temperature at first engine start (°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)) 850 (29.98) 850 (29.98) 800 (28.22) 750 (26.45) 700 (24.69) 650 (22.93) 600 (21.16) 550 (19.4)
Coolant temperature at first engine start (°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)) 500 (17.64) 573 (20.21) 645 (22.75) 654 (23.07) 663 (23.38) 0 (0) 0 (0) 0 (0)
TEMPERATURE SPECIFICATION - MAP 2

Coolant temperature at first engine start (°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)) 850 (29.98) 850 (29.98) 800 (28.22) 750 (26.45) 700 (24.69) 650 (22.93) 600 (21.16) 550 (19.4)
Coolant temperature at first engine start (°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)) 500 (17.64) 573 (20.21) 645 (22.75) 654 (23.07) 663 (23.38) 0 (0) 0 (0) 0 (0)
TEMPERATURE SPECIFICATION - MAP 3

Engine coolant temperature (°C (°F)) -40 (-40) -30 (-22) -20 (-4) -10 (14) 0 (32) 10 (50) 20 (68) 30 (86)
Target retard amount (°CA) 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5
Engine coolant temperature (°C (°F)) 40 (104) 50 (122) 60 (140) 70 (158) 80 (176) 90 (194) 100 (212) 110 (230)
Target retard amount (°CA) 15.5 15.5 15.5 14.5 13.5 13.5 13.5 13.5
TEMPERATURE SPECIFICATION - MAP 4

Engine coolant temperature (°C (°F)) -40 (-40) -30 (-22) -20 (-4) -10 (14) 0 (32) 10 (50) 20 (68) 30 (86)
Target retard amount (°CA) 8.5 8.5 8 7 7 7 7 7
Engine coolant temperature (°C (°F)) 40 (104) 50 (122) 60 (140) 70 (158) 80 (176) 90 (194) 100 (212) 110 (230)
Target retard amount (°CA) 7 5 4 4 4 4 4 4