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 MANUALSSUBARU2014FORESTER 2.5I, ENG CD FB25BA, STANDARD TRANSREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT VARIANT/TRIMSECTION 6 (AUTOMATIC TRANSMISSION CVT (TR580) - SERVICE INFORMATION)TIME LAG TESTINSPECTION
2014 Subaru Forester 2.5i, Eng CD FB25BA, Standard Trans
Time Lag Test: Inspection
2014 Subaru Forester 2.5i, Eng CD FB25BA, Standard TransSECTION Inspection
WARNING: This page is about a different variant/trim than selected.
NOTE:
When the select lever is shifted while the engine is idling, there will be a certain time elapse or lag before shock is felt. This symptom helps to check the condition of forward clutch and reverse brake.
- Perform the test at normal operation CVTF temperature of 60 - 80°C (140 - 176°F).
- Be sure to allow one minute or more interval between tests.
- Make three measurements and take the average value.
- Apply the parking brake.
- Start the engine. Check the idle speed. (A/C OFF)
- Shift the select lever from "N" to "D" range. Using a stop watch, measure the time elapsed from shifting the lever until the shock is felt.
Time lag standard:
1.5 seconds or less
If "N" → "D" time lag is longer than specified:
- Secondary pressure (line pressure) is too low.
- Forward clutch worn
- Forward clutch piston malfunction
- Control valve body malfunction
- Learning incomplete
- In the same manner, measure the time lag when shifting from "N" range to "R" range.
Time lag standard:
1.5 seconds or less
If "N" → "R" time lag is longer than specified:
- Secondary pressure (line pressure) is too low.
- Reverse brake worn
- Reverse brake piston malfunction
- Control valve body malfunction
- Learning incomplete
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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.