06 Corolla Pressure Control Solenoid D Electrical Fault

P2716 Pressure Control Solenoid 'D' Circuit Malfunction
Possible Causes Setting Conditions

• Shift solenoid (SLT) connector is damaged (check pins for damage, moisture)
• Shift solenoid (SLT) control circuit is open or shorted to ground
• Shift solenoid (SLT) has failed (electrical fault)
• ECM has failed the solenoid is under/ behind the transmission pan

The check engine light n or reduced power light comes on when the on-board computer detects a fault in engine driveability or performance, transmission control system or transmission, or the emissions system, and a fault code is set and stored in the computer. Faults that can set the check engine light can range from a vaccuum leak, engine mis-fire, low engine compression, faulty sensor such as O2 sensor or other engine sensor, hydraulic pressure loss in transmission, transmission shift solenoid, open/short in wiring harness, emission evaporative system leak, or one of over a hundred different reasons. The only way to know what set a fault code and turned the check engine light on is to have a diagnostic scanner hooked up to the on-board computer and read it for stored diagnostic fault codes. Many auto parts stores will do this service for free- (like auto zone)check with you local parts stores. If none in your area do, then you will have to take it to a shop and pay to have the computer read for stored fault codes. Without knowing the fault codes numbers, it would be irresponsible to guess as to the cause as there are hundreds of possible causes.

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P2716 -Pressure Control Solenoid "D" Electrical (Shift
Solenoid Valve SLT)
Trouble Area:
1. Open or short in shift solenoid valve SLT circuit. (repair harness wiring)
2. Shift solenoid valve SLT defective. (replace)
3. ECM defective. (replace with a good known one)

DTC P2716 - Pressure Control Solenoid "D" Electrical (Shift Solenoid Valve SLT)

If you need to test this electrical components and wiring. Tell me if you need the TSB about this DTC.

If I'm not mistaken this is an circuit fault code, so you need to check the integrity of the electrical circuit to the solenoid (look for rodent damage on the wiring harness that runs over top of the transmission). Check the resistance of the solenoid itself (poss bad solenoid). It could also be a faulty PCM (computer) If all input tests come back normal and there are no PCM software updates available. Due to the system complexity, I recommend having a qualified repair shop diagnose this concern. -hope this helps

There is a Bulletin on this concern, and it is a warrantable condition for 8 years or 80,000 miles so you are still covered by the factory warranty.
The problem is a logic issue in the PCM. The correction is a new PCM with updated software.


Reference bulletin #TC015-07

The contents are below:

TRANSMISSION & CLUTCH
TC015-07 Title:
HARSH SHIFT AND M.I.L. "ON"
DTC P2716 Models:
'05 - '07 Corolla & Matrix (1ZZ-FE) September 20, 2007

Introduction
Some 2005 - 2007 model year Corolla and Matrix vehicles equipped with an automatic transaxle may exhibit a harsh shift condition and a M.l.L. ON" with DTC P2716 stored.
Improvements have been made to the Engine Control Module (ECM) (SAE term:
Powertrain Control Module/PCM) to reduce the possibility of this condition occurring.

Applicable Vehicles
^ 2005 - 2007 model year Corolla and Matrix (2WD) vehicles equipped with the 1ZZ-FE engine.
Warranty Information
Applicable Warranty*:
This repair is covered under the Toyota Federal Emissions Warranty. This warranty is in effect for 96 months or 80,000 miles, whichever occurs first, from the vehicle's in-service date.



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YES! The P-2716 code IS a common problem.

I am glad that you did not pay for the repair, because the repair is a new computer.

Fortunatly for you, there is a technical service bulleting from Toyota; they will replace it for FREE!

Call your nearest Toyota dealership, tell them you have a P-2716, and make an appointment. They will replace the Electronic Control Unit (the computer) at no charge.

The part is roughly 950 dollars.

Same issue.

There is a service bulletin on this. Toyota will replace computer. I have a 2007 Corolla S with 56,000 miles

It can all be explained here: http://matrixowners.com/tsb/T-TC014-06.pdf

BOTTOM LINE: TAKE IT TOYOTA BEFORE THE WARRANTY EXPIRES @ 80,000 MILES OR 8 YEARS OF OWNERSHIP.

I had mine taken care of today free of charge, and hassle free, thanks to the service crew at Condit's Toyota.