DTC P0732. Saturn L300/LW300 2004

For 1990-2009 cars only

Makes 🢒 Saturn 🢒 2004 🢒 L300/LW300 🢒 Transmission/Transaxle 🢒 Automatic Transaxle - 4T40-E/4T45-E 🢒 DTC P0732

DTC P0732 3.0L

Circuit Description

The TCM calculates gear ratio based on data from the automatic transmission input shaft speed and vehicle speed sensors. The TCM compares the known transmission gear ratio to a calculated ratio for each commanded gear.

If the TCM detects an incorrect 2nd gear ratio, indicating excessive slip or drag within the transmission, DTC P0732 sets. DTC P0732 is a type C DTC.

Conditions for Running the DTC

•	No MAF DTCs P0101, P0102, or P0103.

•	No MAP DTCs P0107 or P0108.

•	No TP DTCs P0121, P0122 or P0123.

•	No VSS DTCs P0502 or P0503.

•	No ISS DTCs P0716 or P0717.

•	No TFP manual valve position switch DTC P1810.

•	The engine run time is greater than 5 seconds.

•	The TFP manual valve position switch is not indicating PARK or NEUTRAL.

•	The transmission fluid temperature is 20-130°C (68-266°F).

•	The TP angle is greater than 15 percent.

•	The vehicle speed is 8 km/h (5 mph) or greater.

Conditions for Setting the DTC

The TCM commands 2nd gear and one of the following conditions occurs for 7 seconds:

•	The gear ratio is greater than 7.90:1.

•	The gear ratio is 2.23:1 to 2.87:1.

•	The gear ratio is 1.71:1 to 2.02:1.

•	The gear ratio is 1.07:1 to 1.54:1.

•	The gear ratio is 0.71:1 to 0.91:1.

•	The gear ratio is less than 0.60:1.

Action Taken When the DTC Sets

•	The TCM does not request the ECM to illuminate the malfunction indicator lamp (MIL).

•	The TCM requests the ECM to illuminate the service vehicle soon (SVS) lamp.

•	The TCM commands maximum line pressure.

•	The TCM freezes transmission adaptive functions.

•	The TCM records the operating conditions when the Conditions for Setting the DTC are met. The TCM stores this information as Failure Records.

•	The TCM stores DTC P0732 in TCM history.

Conditions for Clearing the SVS Lamp/DTC

•	The TCM clears the SVS lamp request when the condition no longer exists.

•	A scan tool can clear the SVS Lamp/DTC.

•	The TCM clears the DTC from TCM history if the vehicle completes 40 warm-up cycles without a non-emission-related diagnostic fault occurring.

•	The TCM cancels the DTC default actions when the fault no longer exists and the DTC passes.

Diagnostic Aids

•	Ask the customer about overloading the vehicle, exceeding the trailer-towing limit, or towing in Overdrive.

•	Inspect for intermittent automatic transmission input shaft speed sensor circuit conditions.

•	Inspect for intermittent vehicle speed sensor circuit conditions.

•	Ensure that the current calibration is correct for the final drive ratio.

•	Refer to Range Reference .

Test Description

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

This step tests for low fluid level, which may cause slipping, and result in an incorrect gear ratio.

This step verifies that the correct 2nd gear ratio occurs for commanded 2nd gear.

This step tests for low line pressure.

Step

Action

Value(s)

Yes

Did you perform the Diagnostic System Check - Engine Controls?

Go to Step 2

Go to Diagnostic System Check - Engine Controls in Engine Controls - 3.0L (L81)

Visually inspect the transmission cooling system for fluid leaks.
Repair leaks as necessary.

Refer to Fluid Leak Diagnosis .

Did you find and correct a condition?

Go to Step 8

Go to Step 3

Did you perform the Transmission Fluid Checking Procedure?

Go to Step 4

Go to Transmission Fluid Check

Install a scan tool.
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 .

Record the DTC Failure Records.
Clear the DTC.
Use the scan tool snapshot mode in order to record commanded gear and gear ratio.
Drive the vehicle in D2 and record the 2nd gear ratio.

Is the 2nd gear ratio within the specified parameters?

1.54:1-1.71:1

Go to Diagnostic Aids

Go to Step 5

Did you perform the Line Pressure Check Procedure?

Go to Step 6

Go to Line Pressure Check

Inspect for the following conditions:

•	The 2nd clutch plates for slipping, dragging or being damaged

•	Refer to Clutch Plate Diagnosis .

•	The 2nd clutch assembly for:

-	The piston and seal assembly (404) binding, cracked, or leaking

-	Snap ring (406) out of position

-	Return spring (405) binding

-	Driven sprocket support (95) damaged, leaking or porous

-	Refer to Driven Sprocket Support Assembly Disassemble .

•	The second roller clutch (452) for being damaged or not holding

•	Refer to Reverse Input and Second Roller Clutch Disassemble .

•	The forward clutch plates for:

Slipping

Dragging

-	Being damaged

-	Refer to Clutch Plate Diagnosis .

•	The forward clutch assembly for:

-	The piston and seal assembly (607) binding, being cracked or leaking

-	Inner seal (608) for plugged orifice

-	Snap rings (600, 605) out of position

-	Housing (609) cracked or plugged feed hole

-	Housing retainer and ball assembly missing or out of position

-	Return spring (606) binding

-	Refer to Forward Clutch Assembly Disassemble .

•	The lo roller clutch (652) for being damaged or not holding

•	The forward clutch support (114) for:

Porosity

Leaking

-	Damaged seal rings

-	Plugged feed holes

-	Refer to Forward Clutch Support, Roller Clutch Disassemble .

•	The input sprag (515) for being damaged or not holding

•	Refer to Direct/Coast Clutch, Reaction Carrier Disassemble .

Repair any of the above items as necessary.

Did you complete the repair?

Go to Step 7

Change the AT fluid and filter.

Refer to Automatic Transmission Fluid Filter and Seal Replacement .

Inspect the AT fluid for correct level.
Add new fluid as necessary.

Important: The Clear TAP function will clear all adapt cells. This may affect transmission performance. The will update the adapt cell values as the vehicle is driven.