Did you perform the Powertrain Diagnostic System Check?

--

Go to Step 2

Go to Diagnostic System Check - Engine Controls (2.2 L) or Diagnostic System Check - Engine Controls (2.4 L) in Engine Controls

2

Did you perform the Transmission Fluid Checking Procedure?

--

Go to Step 3

Go to Transmission Fluid Check

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 PCM.

3. Record the DTC Failure Records.
4. Clear the DTC.
5. Use the Scan Tool snapshot mode in order to record the shift times.
6. Drive the vehicle in D4 in order to obtain 1-2, 2-3, and 3-4 shift times.
7. Record the shift times.

Did all the shift times exceed the specified value?

0.65 second

Go to Step 4

Go to Step 6

4

Did you perform the Line Pressure Check Procedure?

--

Go to Step 5

Go to Line Pressure Check

1. Inspect the transmission for the following conditions:

•	Low fluid level caused by external leaks

•	Clogged fluid filter

•	Out-of-position fluid filter

•	Internal fluid passage leaks

•	Casting porosity or damage

•	Damaged gasket or spacer plate

•	Out-of-position gasket or spacer plate

•	Contaminated PC solenoid valve

•	Damaged PC solenoid valve

•	Stuck PC solenoid valve

•	Stuck pressure regulator valve train

•	Leaking pressure regulator valve train

•	Stuck torque signal valve train

•	Leaking torque signal valve train

•	Leaking oil pump

•	Damaged oil pump

•	Inadequate oil pump suction

•	Oil pump cavitation

2. Repair any of the above conditions as necessary.

Refer to Transmission Overhaul in Transmission Unit Repair Manual.

Did you complete the repair?

--

Go to Step 12

--

Did the 1-2 shift time exceed the specified value?

0.65 second

Go to Step 9

Go to Step 7

Did the 2-3 shift time exceed the specified value?

0.65 second

Go to Step 10

Go to Step 8

Did the 3-4 shift time exceed the specified value?

0.65 second

Go to Step 11

--

1. Inspect the 1-2 shift circuit for the following conditions:

•	Leaking 1-2 accumulator piston seals

•	Rolled 1-2 accumulator piston seals

•	Cut 1-2 accumulator piston seals

•	Leaking 2nd clutch piston seals

•	Rolled 2nd clutch piston seals

•	Cut 2nd clutch piston seals

•	Burned 2nd clutch plates

•	Damaged 2nd clutch plates

•	Broken 2nd clutch springs

•	Out-of-position 2nd clutch springs

•	Damaged 2nd clutch piston

•	Leaking driven sprocket support seals

•	Damaged driven sprocket support seals

•	Internal fluid passage leaks

•	Casting porosity or damage

•	Damaged gasket or spacer plate

•	Out-of-position gasket or spacer plate

•	Slipping forward clutch

•	Cracked or damaged driven sprocket support

•	Damaged sprag clutch (not holding)

•	2nd roller clutch damaged (not holding)

2. Repair the 1-2 shift circuit as necessary.

Refer to Transmission Overhaul in Transmission Unit Repair Manual.

Did you complete the repair?

--

Go to Step 12

--

1. Inspect the 2-3 shift circuit for the following conditions:

•	Leaking 2-3 accumulator piston seals

•	Rolled 2-3 accumulator piston seals

•	Cut 2-3 accumulator piston seals

•	Leaking direct clutch piston seals

•	Rolled direct clutch piston seals

•	Cut direct clutch piston seals

•	Burned direct clutch plates

•	Damaged direct clutch plates

•	Broken direct clutch springs

•	Out-of-position direct clutch springs

•	Damaged direct clutch pistons

•	Leaking driven sprocket support seals

•	Damaged driven sprocket support seals

•	Damaged driven sprocket support

•	Damaged (or not holding) sprag clutch

•	Internal fluid passage leaks

•	Casting porosity or damage

•	Damaged gasket or spacer plate

•	Out-of-position gasket or spacer plate

2. Repair the 2-3 shift circuit as necessary.

Refer to Transmission Overhaul in Transmission Unit Repair Manual.

Did you complete the repair?

--

Go to Step 12

--

1. Inspect the 3-4 shift circuit for the following conditions:

•	Leaking 3-4 accumulator piston seals

•	Rolled 3-4 accumulator piston seals

•	Cut 3-4 accumulator piston seals

•	Leaking intermediate/4th servo piston seals

•	Rolled intermediate/4th servo piston seals

•	Cut intermediate/4th servo piston seals

•	Burned intermediate/4th band

•	Out-of-position intermediate/4th band

•	Damaged intermediate/4th band

•	Slipping intermediate/4th band

•	Internal fluid passage leaks

•	Casting porosity or damage

•	Damaged gasket or spacer plate

•	Out-of-position gasket or spacer plate

•	Slipping direct clutch

•	Damaged intermediate/4th servo pin

•	Seized intermediate/4th servo pin

•	Damaged intermediate/4th servo piston

•	Cracked intermediate/4th servo cover

•	Leaking intermediate/4th servo cover

2. Repair the 3-4 shift circuit as necessary.

Refer to Transmission Overhaul in Transmission Unit Repair Manual.

Did you complete the repair?

--

Go to Step 12

--

1. Change the AT fluid and filter.

Refer to Automatic Transmission Fluid Filter and Seal Replacement .

2. Inspect the transmission 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 transmission will update the adapt cell values as the vehicle is driven.

4. Use the Scan Tool in order to perform the Clear TAPS function.

Did you complete the above procedures?

--

Go to Step 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:

•	Drive the vehicle in D4 in order to obtain 1-2, 2-3, and 3-4 shifts.

•	Shift times must be less than 0.65 second.

4. Select Specific DTC.
5. Enter DTC P1811.

Has the test run and passed?

--

System OK

Go to Step 1