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.
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HOMESERVICE MANUALSSUBARU2007FORESTER F4-2.5L DOHC TURBOREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTTRANSMISSION CONTROL SYSTEMSTESTING AND INSPECTIONSCAN TOOL TESTING AND PROCEDURES
2007 Subaru Forester F4-2.5L DOHC Turbo
Scan Tool Testing and Procedures
2007 Subaru Forester F4-2.5L DOHC TurboSECTION Scan Tool Testing and Procedures
Inspection Mode
PROCEDURE
WARNING: Observe the traffic law when driving on public roads.
Shift the select lever to "D" range, and then drive the vehicle at 60 km/h (37 MPH) for at least 10 seconds.
AT OIL TEMP Warning Light Display
OPERATION
When any on-board diagnostics item is malfunctioning, AT OIL TEMP warning light blinks from the time malfunction is detected after starting the engine until ignition switch is turned to OFF. The malfunctioning part or unit can be determined by a DTC during the on-board diagnostics operation. Problems which occurred previously can also be identified through the memory function. If the AT OIL TEMP warning light does not show a problem (although a problem is occurring), the problem can be determined by checking the performance characteristics of each sensor using Subaru Select Monitor. Indicator light signal patterns are as shown in the figure.
INSPECTION
DIAGNOSIS: The AT OIL TEMP warning light circuit is open or shorted.
TROUBLE SYMPTOM:
^ When the ignition switch is turned ON (engine OFF), AT OIL TEMP warning light does not illuminate.
^ When the on-board diagnostics is performed, the AT OIL TEMP warning light remains illuminated.
CHECK POWER SUPPLY AND GROUND CIRCUIT
PROCEDURE
WARNING: Observe the traffic law when driving on public roads.
Shift the select lever to "D" range, and then drive the vehicle at 60 km/h (37 MPH) for at least 10 seconds.
AT OIL TEMP Warning Light Display
OPERATION
When any on-board diagnostics item is malfunctioning, AT OIL TEMP warning light blinks from the time malfunction is detected after starting the engine until ignition switch is turned to OFF. The malfunctioning part or unit can be determined by a DTC during the on-board diagnostics operation. Problems which occurred previously can also be identified through the memory function. If the AT OIL TEMP warning light does not show a problem (although a problem is occurring), the problem can be determined by checking the performance characteristics of each sensor using Subaru Select Monitor. Indicator light signal patterns are as shown in the figure.
INSPECTION
DIAGNOSIS: The AT OIL TEMP warning light circuit is open or shorted.
TROUBLE SYMPTOM:
^ When the ignition switch is turned ON (engine OFF), AT OIL TEMP warning light does not illuminate.
^ When the on-board diagnostics is performed, the AT OIL TEMP warning light remains illuminated.
WIRING DIAGRAM:
Step 1:
Step 2-Step 7:
CHECK POWER SUPPLY AND GROUND CIRCUIT
WIRING DIAGRAM:
Step 1-Step 2:
Step 3-Step 8:
RENDER: 1.0x
NO RELATED
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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.