AUTOMATIC TRANSMISSION FLUID (ATF) INSPECTION [5R55S]

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Automatic Transmission Fluid (ATF) Condition Inspection

1.  Hold the larger drain plug with a wrench and remove the small (center) fluid level indicating plug.

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2.  Check the ATF level.

3.  Observe the color and the odor of the ATF.

•  Under normal circumstances the color should be dark reddish, not brown or black.

4.  Allow the ATF to drip onto a facial tissue and examine the stain.

•  If evidence of solid material is found, the fluid pan should be removed for further inspection.

•  If ATF contamination or transmission failure is confirmed by the sediment in the bottom of the fluid pan, the transmission must be disassembled and completely cleaned.

5.  Install the small (center) fluid level indicating plug.

Automatic Transmission Fluid (ATF) Level Inspection

1.  Connect the M-MDS to the vehicle DLC-2 16-pin connector.

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2.  Verify the ATF temperature using the PID/data monitor “TFT”.

3.  Warm up the automatic transmission until the ATF temperature is 27—49 °C {80—120 °F}.

4.  Move the range selector lever slowly through each gear, stopping in each position and allowing the transmission to engage.

5.  Place the selector lever in the P position.

Note

•  With the engine running and the vehicle set as close to level as possible, position it on a hoist.

6.  Hold the larger drain plug with a wrench and remove the small (center) fluid level indicating plug.

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7.  Install the SST into the pan.

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Note

•  Prior to filling the SST with clean ATF, make sure that the canister is clean.

8.  Fill the SST with clean ATF.

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9.  Hang the SST under the vehicle. Position it upright and close to the transmission.

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10.  Connect the SST.

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•  Connect the open end of the fluid hose from the SST (49 UN30 7D4650) to the SST (49 UN30 7437) at the bottom of the fluid pan.

11.  Apply a maximum of 206.85 kPa {2.11 kgf/cm², 30.0 pis} to the open end of the vacuum/pressure hose from the rubber tip air nozzle. Fluid will immediately start flowing out of the SST into the fluid pan.

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12.  Add 0.5 L {0.5 US qt, 0.4 lmp qt} of ATF into the fluid pan. Stop the process by releasing the air pressure and removing the air nozzle from the end of the hose.

13.  Inspect the ATF level in the SST.

•  If the fluid drains back into the canister, the transmission is full.

•  If no fluid drains back, more fluid will need to be added. Repeat Steps 11 and 12.

14.  Once the transmission is full, place a hand vacuum pump on the open end of the vacuum/pressure hose on the SST and apply vacuum to the system. This will pull out any extra fluid trapped in the system and direct it into the container.

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15.  Make sure that the ATF temperature is between 27—49 °C {80—120 °F}.

16.  Allow the ATF to drain.

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•  When the ATF comes out as a thin stream or drip, the ATF is at the correct level.

17.  Install the small (center) fluid level indicating plug.

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18.  Check the operation of the transmission by moving the selector lever slowly through each gear, stopping in each position and allowing the transmission to engage.