Time Lag Test: Inspection

WARNING: This page is about a different car, the 2004 Subaru Outback, 2004 Subaru Legacy, and 2004 Subaru Baja. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: If the select lever is shifted while the engine is idling, there will be a certain time elapse or lag before the shock can be felt. This is used for checking the condition of the low clutch, reverse clutch, low & reverse brake and one-way clutch.

Perform the test at normal operating fluid temperature 70 to 80°C (158 to 176°F).
Be sure to allow a 1 minute interval between tests.
Make three measurements and take the average value.
1. Fully apply the parking brake.
2. Start the engine. Check the idling speed (A/C OFF).
3. Shift the select lever from "N" to "D" range. Using a stop watch, measure the time it takes from shifting the lever until the shock is felt.
  Time lag: Less than 1.2 seconds If "N" --> "D" time lag is longer than specified:
  - Line pressure too low
  - Low clutch worn
  - One-way clutch not operating properly
4. In the same manner, measure the time lag for "N" --> "R".
  Time lag: Less than 1.5 seconds
  
  If "N" --> "R" time lag is longer than specified:
  - Line pressure too low
  - Reverse clutch worn
  - Low & reverse brake worn
  - Wear of D-ring