Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2016 Subaru Outback 2.5iFACTORY OEM SERVICE PROCEDURE
Execution Condition
| Secondary Parameters | Execution condition |
|---|---|
| < Idle speed diagnosis > | |
| Barometric pressure | ≥ 75.1 kPa (563 mmHg, 22.2 inHg) |
| Battery voltage | > 10.9 V |
| Vehicle speed | ≤ 2 km/h (1.2 MPH) |
| Engine coolant temperature | ≤ 60 °C (140 °F) |
| Intake air amount sum value | ≤ Value of Map 1 |
| Elapsed time after gear position change (P ←→ D or N ←→ D) | ≥ 3000 ms |
| Throttle valve opening angle | < 0.37 ° |
| Fuel property | Not extremely low volatility |
| Elapsed time after starting the engine | ≥ 2000 ms |
| < Final ignition timing diagnosis > | |
| Barometric pressure | ≥ 75.1 kPa (563 mmHg, 22.2 inHg) |
| Battery voltage | > 10.9 V |
| Vehicle speed | ≤ 2 km/h (1.2 MPH) |
| Engine coolant temperature | ≤ 60 °C (140 °F) |
| Intake air amount sum value | ≤ Value of Map 2 |
| Elapsed time after gear position change (P ←→ D or N ←→ D) | ≥ 3000 ms |
| Throttle valve opening angle | < 0.37 ° |
| Fuel property | Not extremely low volatility |
| Commanded ignition timing retard | ≥ Value from Map 3 |
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) | 40 (104) | 50 (122) | 60 (140) | 70 (158) | 80 (176) | 90 (194) | 100 (212) | 110 (230) |
| Intake air amount sum value g (oz) | 2000 (70.54) | 1800 (63.49) | 1500 (52.91) | 675 (23.81) | 550 (19.4) | 450 (15.87) | 390 (13.76) | 320 (11.29) | 260 (9.17) | 210 (7.41) | 180 (6.35) | 180 (6.35) | 180 (6.35) | 180 (6.35) | 180 (6.35) | 180 (6.35) |
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) | 40 (104) | 50 (122) | 60 (140) | 70 (158) | 80 (176) | 90 (194) | 100 (212) | 110 (230) |
| Intake air amount sum value g (oz) | 2000 (70.54) | 1800 (63.49) | 1500 (52.91) | 675 (23.81) | 550 (19.4) | 450 (15.87) | 390 (13.76) | 320 (11.29) | 260 (9.17) | 210 (7.41) | 180 (6.35) | 180 (6.35) | 180 (6.35) | 180 (6.35) | 180 (6.35) | 180 (6.35) |
TEMPERATURE SPECIFICATION - MAP 3
| Engine coolant temperature | -40 °C (-40 °F) | -30 °C (-22 °F) | -20 °C (-4 °F) | -10 °C (14 °F) | 0 °C (32 °F) | 10 °C (50 °F) | 20 °C (68 °F) | 30 °C (86 °F) | 40 °C (104 °F) | 50 °C (122 °F) | 60 °C (140 °F) |
| Commanded ignition timing retard (CVT model) | 21 °CA | 21 °CA | 21 °CA | 21 °CA | 21 °CA | 21 °CA | 21 °CA | 21 °CA | 21 °CA | 21 °CA | 21 °CA |
| Commanded ignition timing retard (MT model) | 11 °CA | 11 °CA | 11 °CA | 11 °CA | 11 °CA | 11 °CA | 11 °CA | 11 °CA | 11 °CA | 11 °CA | 11 °CA |
Factory Service Tools
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
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