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Test Procedure

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  1. Engine and transmission must be at normal operating temperature (122-176°F (50-80°C). Start engine and ensure idle RPM is within specification. See IDLE SPEED SPECIFICATIONS . On 4WD models, ensure transfer case gearshift lever is in "H2" position.
  2. On all models, apply service and parking brakes. Using stop watch, measure time until engagement shock is felt when gearshift lever is shifted from "N" to "D". Allow one minute interval between tests. Perform time measurements 2 more times and calculate average value. Time should be less than 1.2 seconds.
  3. Use same procedure to test time lag when gearshift lever is moved from "N" to "R". Time lag should be less than 1.5 seconds. If time lag is not to specification, check for the following conditions:
    • If "N" to "D" time lag exceeds specification, check for low main line pressure, worn forward clutch or overdrive one-way clutch not operating correctly.
    • If "N" to "R" time lag exceeds specification, check for low main line pressure, worn direct clutch, worn 1st and reverse brake or overdrive one-way clutch not operating correctly.
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