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Home >> Subaru >> 2017 >> Impreza Base, 4D Sedan, Standard Trans >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (Diagnostics) (P0171 To P0685) >> 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 or more
Barometric pressure 75.1kPa (563mmHg, 22.2 in Hg) or more
Vehicle speed 2km/h (1.2MPH) or less
Throttle position Less than 0.37°
Integrated value of intake air amount Less than value of Map 1
Elapsed time after gear position change
(P ←→ D or N ←→ D)
2000ms or more
Elapsed time after starting the engine 2000ms or more
<Final ignition timing diagnosis>
  • Idle diagnosis

Battery voltage
10.9 V or more
Barometric pressure 75.1kPa (563mmHg, 22.2 in Hg) or more
Vehicle speed 2km/h (1.2MPH) or less
Integrated value of intake air amount Less than value of Map 2
Elapsed time after gear position change
(P ←→ D or N ←→ D)
2000ms or more
Target retard amount in CSERS Value of Map 3 or less (before top dead center)
  • Non-idle diagnosis

Battery voltage
10.9 V or more
Barometric pressure 75.1kPa (563mmHg, 22.2 in Hg) or more
Integrated value of intake air amount Less than value of Map 2
Elapsed time after gear position change
(P ←→ D or N ←→ D)
0ms or more
Retard amount Value of Map 4 or more
ENGINE COOLANT TEMPERATURE SPECIFICATIONS

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) 1000 (35.26) 961 (33.9) 923 (32.54) 884 (31.18) 845 (29.82) 807 (28.46) 768 (27.1) 730 (25.74)
ENGINE COOLANT TEMPERATURE SPECIFICATIONS

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) 691 (24.38) 623 (21.96) 554 (19.54) 485 (17.12) 417 (14.7) 348 (12.28) 279 (9.85) 211 (7.43)
ENGINE COOLANT TEMPERATURE SPECIFICATIONS

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) 1000 (35.26) 961 (33.9) 923 (32.54) 884 (31.18) 845 (29.82) 807 (28.46) 768 (27.1) 730 (25.74)
ENGINE COOLANT TEMPERATURE SPECIFICATIONS

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) 691 (24.38) 623 (21.96) 554 (19.54) 485 (17.12) 417 (14.7) 348 (12.28) 279 (9.85) 211 (7.43)
ENGINE COOLANT TEMPERATURE SPECIFICATIONS

Engine coolant temperature °C (°F) -40(-40) -30(-22) -20(-4) -10(14) 0(32) 10(50) 20(68) 30(86) 40(104) 50(122) 60(140)
Target retard amount in CSERS (°CA) 14.5 14.5 11.5 9.5 9.5 1.5 -5.5 -5.5 -5.5 -3.5 -1.5
ENGINE COOLANT TEMPERATURE SPECIFICATIONS

Engine coolant temperature °C (°F) 70(158) 80(176) 90(194) 100(212) 110(230)
Target retard amount in CSERS (°CA) 0.5 1.5 1.5 1.5 1.5
ENGINE COOLANT TEMPERATURE SPECIFICATIONS

  Engine coolant temperature °C (°F)
-40(-40) -30(-22) -20(-4) -10(14) 0(32) 10(50) 20(68) 30(86)
Target retard amount in CSERS (g/rev) 0.55 9 9 9 9 9 9 9 9
0.6 4 4 4 4 4 4 4 4
0.65 0 0 0 0 0 0 0 0
(°CA)
ENGINE COOLANT TEMPERATURE SPECIFICATIONS

  Engine coolant temperature °C (°F)
40(104) 50(122) 60(140) 70(158) 80(176) 90(194) 100(212) 110(230)
Target retard amount in CSERS (g/rev) 0.55 9 9 9 8.5 4 4 4 4
0.6 4 4 4 2 1.5 1.5 1.5 1.5
0.65 0 0 0 0 0 0 0 0
(°CA)