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Home >> Cadillac >> 2004 >> CTS Base, 3.2 N >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 28 (Automatic Transmission - 5L40-E (DTC P0115 To P0742)) >> Automatic Transaxle Diagnosis >> DTC P0732 >> Test Description

Test Description

WARNING: This page is about a different variant/trim than selected.

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 2nd gear ratio occurs for commanded 2nd gear. If necessary, use the Shift Transmission function of the scan tool in order to command 2nd gear for the length of time necessary to read the gear ratio from the display.
  3. 5:  This step tests for low line pressure.
DTC P0732

Step Action Value(s) Yes No
1 Did you perform the Diagnostic System Check - Automatic Transmission? - Go to Step 2  Go to Diagnostic System Check - Automatic Transmission
2
  1. Visually inspect the transmission cooling system for fluid leaks.
  2. Repair leaks as necessary.
Refer to Fluid Leak Diagnosis .Did you find and correct a condition?		 - Go to Step 12  Go to Step 3 
3  Perform the Transmission Fluid Checking Procedure. Refer to Transmission Fluid Checking Procedure .
Is the action complete?		 - Go to Step 4  -
4 
  1. Install a scan tool.
  2. Turn ON the ignition, with the engine OFF.
    3. IMPORTANT:
    • Before clearing the DTC, use the scan tool in order to record the ECM and the TCM Failure Records. Using the Clear Info function erases the Failure Records from the ECM and TCM.
    • Using the Clear Info function erases stored DTCs in both the ECM and 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 D2 and record the 2nd gear ratio.
Is the 2nd gear ratio within the specified range?		 2.44:1-2.10:1 Go to Intermittent Conditions in Engine Controls - 2.6L and 3.2L or Intermittent Conditions in Engine Controls - 3.6L (LY7) Go to Step 5 
5  Perform the Line Pressure Check Procedure. Refer to Line Pressure Check Procedure .
Is the action complete?		 - Go to Step 6  -
6
  1. Remove the transmission oil pan. Refer to Automatic Transmission Fluid/Filter Replacement .
  2. Inspect the bottom of the pan for excessive sediment.
Did you find excessive amounts of sediment?		 - Go to Step 10  Go to Step 7 
7 Inspect for the following conditions:
  • 1-2 shift solenoid valve assembly (368) mechanically stuck off or leaking
  • 1-2 shift control valve (366) stuck
  • 1-2 shift valve (387) stuck

    Refer to Rear Control Valve Body Disassemble in Transmission Unit Repair article.

  • The control valve body and accumulator assembly (47) for the second clutch accumulator (330-333) leaking
  • The automatic transmission case (24) for the center support fluid passage sleeve (38) leaking

Refer to Control Valve Body Accumulator Assembly Disassemble and Control Valve Body Accumulator Assembly Assemble in Transmission Unit Repair article.
Did you find any of the above conditions?		 - Go to Step 9  Go to Step 8 
8 Has the control valve body been serviced within the past 3 months or 4 828 km (3,000 miles)? - Go to Step 10  Go to Step 9 
9 Repair or replace the control valve body.
Refer to Control Valve Body Accumulator Assembly Replacement .
Is the action complete?		 - Go to Step 12  -
10 Inspect for the following conditions:
  • Second clutch backing plate retainer ring (527) out of position or damaged
  • Second clutch plate assembly (524 or 525) slipping, dragging or damaged
  • Second clutch apply plate (523) seized or damaged
  • Second clutch piston (520) cracked, damaged or worn
  • Second clutch spring (521) damaged

    Refer to Center Support Disassemble and Center Support Assemble in Transmission Unit Repair article.

  • The planetary carrier assembly for 2nd clutch sprag assembly (547) not holding or damaged

    Refer to Input and Reaction Carrier Disassemble in Transmission Unit Repair article.


Did you find any of the above conditions?		 - Go to Step 11  -
11 Repair or replace the transmission.
Refer to Transmission Replacement (2.6L and 3.2L) and/or Transmission Replacement (3.6L (LY7)) .
Is the action complete?		 - Go to Step 12  -
12
  1. Replace the AT fluid and filter.

    Refer to Automatic Transmission Fluid/Filter Replacement .

  2. Inspect for the correct level of AT fluid.
  3. Add new fluid as necessary.
    4. IMPORTANT: The Reset Transmission Adapts 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 Reset Transmission Adapts.
Did you complete the above procedures?		 - Go to Step 13  -
13 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 20-130°C (68-266°F).
    • The engine torque is greater than 55 N.m (41 lb ft).
    • Drive the vehicle in D5 with the throttle position angle greater than 10 percent in order to obtain a correct 2nd gear ratio for 2 seconds.
  4. Select Specific DTC.
  5. Enter DTC P0732.

Has the test run and passed?		 - Go to Step 14  Go to Step 2 
14 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 Trouble Code (DTC) List in Engine Controls - 2.6L and 3.2L or Diagnostic Trouble Code (DTC) List in Engine Controls - 3.6L (LY7) System OK
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