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Home >> Saturn >> 2002 >> LW200 Automatic >> Repair and Diagnosis >> External Pages >> Different car >> Section 312 (Automatic Transaxle - 4T40-E/4T45-E - Diagnosis (DTC P0719 To DTC P0757)) >> Diagnostic Trouble Codes >> DTC P0733 (3.0L - L81) >> Test Description

Test Description

WARNING: This page is about a different car, the 2003 Saturn LW300, 2003 Saturn LW200, 2003 Saturn L300, and 2003 Saturn L200. However, it is still accessible from the selected car via links, so may be relevant.

The numbers below refer to the step numbers on the diagnostic table.

  1. 3:  This step tests for low fluid level, which may cause slipping, and result in an incorrect gear ratio.
  2. 4:  This step verifies that the correct 3rd gear ratio occurs for commanded 3rd gear.
  3. 5:  This step tests for low line pressure.
DTC P0733

Step Action Value(s) Yes No
1 Did you perform the Diagnostic System Check - in Engine Controls? - Go to Step 2  Go to DIAGNOSTIC SYSTEM CHECK - ENGINE CONTROLS in Self-Diagnostics - 3.0L or DIAGNOSTIC SYSTEM CHECK -- ENGINE CONTROLS in Self-Diagnostics - 2.2L
2
  1. Visually inspect the transmission cooling system for fluid leaks.
  2. Repair leaks as necessary.
Refer to Fluid Leak DiagnosisDid you find and correct a condition?		 - Go to Step 8  Go to Step 3 
3  Did you perform the Transmission Fluid Checking Procedure? - Go to Step 4  Go to TRANSMISSION FLUID CHECKING PROCEDURE
4 
  1. Install a scan tool.
  2. Turn ON the ignition, with the engine OFF.
    IMPORTANT: Before clearing the DTC, use the scan tool in order to record the Failure Records. Using the Clear Info function erases the Failure Records from the TCM.
  3. Record the DTC Failure Records.
  4. Clear the DTC.
  5. Use the scan tool snapshot mode in order to record commanded gear and gear ratio.
  6. Drive the vehicle in D3 and record the 3rd gear ratio.
Is the 3rd gear ratio within the specified parameters?		 0.91:1-1.07:1 Go to Diagnostic Aids Go to Step 5 
5  Did you perform the Line Pressure Check Procedure? - Go to Step 6  Go to LINE PRESSURE CHECK PROCEDURE
6
  1. Inspect the following items:
    • The Direct Clutch Plates slipping, dragging or damaged.

      Refer to Clutch Plate Diagnosis

    • The Direct Clutch assembly for:
      • Piston and Seal Assembly (518) binding, cracked or leaking.
      • Snap Ring (520) out of position.
      • Housing Retainer and Ball Assembly missing or out of position.
      • Return Spring (519) binding.
      • Direct/Coast Clutch Input Shaft and Housing (502) damaged, cracked or restricted oil feed holes.

        Refer to Direct/Coast Clutch, Reaction Carrier Disassemble in Automatic Transaxle - 4T40-E/4T45-E (Overhaul).

    • The Driven Sprocket Support Seals (403) leaking.

      Refer to Driven Sprocket Support Assembly Disassemble in Automatic Transaxle - 4T40-E/4T45-E (Overhaul).

  2. Repair any of the above items as necessary.
Did you complete the repair?		 - Go to Step 7  -
7
  1. Change the AT fluid and filter.

    Refer to Oil Filter and Seal Replacement in Automatic Transaxle - 4T40-E/4T45-E (Overhaul).

  2. Inspect the AT fluid for correct level.
  3. Add new fluid as necessary.
    IMPORTANT: The Clear TAPS function will clear all adapt cells. This may affect transmission performance. The TCM will update the adapt cell values as the vehicle is driven.
  4. Use the scan tool in order to perform the following:
    • Reset oil life monitor to 100%.
    • Clear TAPS.
Did you complete the above procedures?		 - Go to Step 8  -
8 Perform the following procedure in order to verify the repair:
  1. Select DTC.
  2. Select Clear Info.
  3. Operate the vehicle under the following conditions:
    • The TFT is 50-130°C (122-266°F).
    • Drive the vehicle in D3 with the TP angle greater than 15% in order to obtain a correct 3rd gear ratio for 7 seconds.
  4. Select Specific DTC.
  5. Enter DTC P0733.

Has the test run and passed?		 - Go to Step 9  Go to Step 2 
9 With the scan tool, observe the stored information, capture info. and DTC info.
Does the scan tool display any DTCs that you have not diagnosed?		 - Go to DIAGNOSTIC TESTS in Self-Diagnostics - 2.2L or DIAGNOSTIC TESTS in Self-Diagnostics - 3.0L System OK
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