GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Pontiac 🢒 2006 🢒 Vibe - FWD 🢒 DTC 🢒 DTC P2716

Circuit Description

The throttle pressure that is applied to the primary regulator valve modulates the line pressure causing the line pressure solenoid valve to precisely modulate and create line pressure according to throttle position or engine load. This modulation action controls the line pressure which in turn provides smoother shifts between gears.

When the powertrain control module (PCM) receives the throttle position opening angle, the PCM controls the line pressure by sending a predetermined duty cycle to the solenoid valve.

The line pressure solenoid valve controls the transaxle line pressure for smooth transaxle operation based on signals from the throttle position (TP) sensor and the vehicle speed sensor (VSS).

When the PCM detects a continuous open or short to ground in the line pressure solenoid circuit, then DTC P2716 sets.

DTC P2716 is a type B DTC.

DTC Descriptor

This diagnostic procedure supports the following DTC:

DTC P2716 Line Pressure Control Solenoid

Conditions for Running the DTC

PCM detects a open or short to ground in line pressure solenoid circuit.

Conditions for Setting the DTC

DTC P2716 sets when either of the following conditions occurs:

    • The PCM detects an open in the solenoid circuit.
    • The PCM detects an short to ground in the solenoid circuit.

Action Taken When the DTC Sets
    • At the time of the first failure, the PCM records the operating conditions when the Conditions for Setting the DTC are met. The PCM stores this information as a Failure Record.
    • The PCM illuminates the malfunction indicator lamp (MIL) during the first consecutive failure in which the Conditions for Setting the DTC are met.
    • The PCM turns OFF power to the solenoid.
    • The PCM stores DTC P2716 in PCM history.

Conditions for Clearing the MIL/DTC
    • A scan tool can clear the MIL/DTC.
    • The PCM clears the DTC from PCM history if the vehicle completes 40 warm-up cycles without an emission related diagnostic fault occurring.

Test Description

The number below refers to the step number on the diagnostic table.

  1. Listen for an audible click when the solenoid energizes.

DTC P2716

Step

Action

Yes

No

Schematic Reference: Automatic Transmission Controls Schematics

1

Did you perform the Diagnostic System Check - Vehicle?

Go to Step 2

Go to Diagnostic System Check - Vehicle in Vehicle DTC Information

2

  1. Install a scan tool.
  2. Start the vehicle.

    3. Important: 

       • Before clearing the DTC, use the scan tool in order to record the powertrain control module (PCM) Freeze Frame Failure Records. Using the Clear Info function erases the Freeze Frame Failure Records from the PCM.
       • Using the Clear Info function erases stored DTCs in the PCM.

  3. Record the DTC Freeze Frame and Failure Records.
  4. Clear the DTC.
  5. Use the scan tool in order to command the PC Solenoid output control.

Does the line pressure decrease and increase as commanded?

Go to Step 4

Go to Step 3

3
  1. Turn OFF the ignition.
  2. Disconnect the PCM.
  3. Test the circuit from the PCM to the line pressure solenoid for a open or short to ground in the circuit. Refer to Testing for Short to Ground in Wiring Systems.

Did you find a condition?

Go to Step 6

Go to Step 5

4
  1. Remove the transmission oil pan.
  2. Test the line pressure solenoid wiring from the 6-way connector to the solenoid connector for the following conditions:
    3. • An open circuit
    • A short to ground
    • Refer to Testing for Short to Ground in Wiring Systems.

Did you find a condition?

Go to Step 7

Go to Step 8

5

Replace the PCM. Refer to Powertrain Control Module Programming and Setup in Programming and Setup.

Is the action complete?

Go to Step 9

--

6

Perform the necessary wiring repairs. Refer to Wiring Repairs in Wiring Systems.

Is the action complete?

Go to Step 9

--

7

Replace the internal transmission wiring harness. Refer to Solenoids and Wiring Harness Replacement.

Is the action complete?

Go to Step 9

--

8

Replace the line pressure solenoid valve. Refer to Solenoids and Wiring Harness Replacement.

Is the action complete?

Go to Step 9

--

9

Perform the following procedure in order to verify the repair:

  1. Select DTC.
  2. Select Clear Info.
  3. Turn ON the ignition, with the engine OFF.
  4. Select Specific DTC.
  5. Enter DTC P2716.

Has the test run and passed?

Go to Step 10

Go to Step 2

10

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 - Vehicle in Vehicle DTC Information

System OK