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Test Procedure

WARNING: This page is about a different car, the 2012 RAM Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Line Pressure Reading
GC0109560Courtesy of CHRYSLER GROUP, LLC
1 - LINE PRESSURE ADAPTER 100009-1
2 - OIL PRESSURE GAUGE C-3293SP
NOTE:

The AS68RC utilizes closed loop control of pump line pressure. The pressure readings may therefore vary greatly but should always follow line pressure.

All pressure readings should be taken with the transmission fluid level full, transmission oil at the normal operating temperature. Check the transmission for proper operation in each gear position that is in question or if a specific element is in question.

WARNING:

The line pressure test should be performed by two people. One person moves away from the vehicle and checks the condition of the tires and wheel chocks. The other person performs the test. Failure to follow these instruction may result in personal injury or may be fatal.

  1. Fully apply the parking brake.
  2. Apply wheel chocks.
  3. Remove the line pressure sensing plug and install adapter fitting (special tool #10009, Adapters, Line Pressure) (1) and the oil pressure gauge (special tool #C-3293-SP, Gauge, Pressure 0-300 P.S.I.) (2).
  4. Start the engine and allow it to warm up until the ATF reaches a temperature of 50 - 80° C (120 - 175° F).
  5. Depress the brake pedal firmly. While holding down the brake pedal firmly shift into the D range, measure and record the oil pressure at idle.
    WARNING:

    If the engine speed does not reach the stall level and the rear wheel start to turn, ease off the accelerator and stop the test. Failure to follow these instruction may result in personal injury or may be fatal.

  6. Fully depress the accelerator pedal. Quickly measure and record the oil pressure at stall speed.

    Take measurements in a similar manner for the R range.

  7. Remove adapter fitting (special tool #10009, Adapters, Line Pressure) (1) and the oil pressure gauge (special tool #C-3293-SP, Gauge, Pressure 0-300 P.S.I.) (2).
  8. Install the line pressure sensing plug and tighten to 27 N.m (20 ft.lbs.)
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