DTC P2723 or P2724
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Perform
the Diagnostic
System Check - Vehicle prior to using this diagnostic procedure. |
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Review
Strategy
Based Diagnosis for an overview of the diagnostic approach. |
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Diagnostic
Procedure Instructions provides an overview of each diagnostic category. |
DTC P2723:
Clutch Pressure Control (PC) Solenoid 5 - Stuck Off
DTC P2724: Clutch Pressure Control (PC) Solenoid 5 -
Stuck On
The following fault
table will help determine if a hydraulic circuit or an incorrect position of a
valve train component affects the transmission operation.
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Component |
Cause |
DTCs |
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1-2-3-4 and 3-5-R
Clutch Housing Assembly |
1-2-3-4 clutch backing
plate retaining ring not seated, causing the piston to over-travel and cut
1-2-3-4 clutch piston seal |
P2723 |
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Lower Control Valve
Body Assembly |
Clutch select
valve 3 stuck OFF - debris, sediment, binding or scored bore |
P2723 |
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Upper Control Valve
Body Assembly |
1-2-3-4 Clutch
regulator valve stuck - debris, sediment, binding or scored bore |
P2723 |
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|
Fluid Pump Cover
Assembly |
|
P2723 |
The clutch pressure
control (PC) solenoid 5 is integral to the control solenoid (w/body
and TCM) valve assembly and has no serviceable parts. The PC solenoid 5 is
a normally high-pressure control solenoid which provides fluid pressure to the
1-2-3-4 clutch regulator valve. The TCM controls the solenoid pressure by
regulating the exhaust fluid. When the TCM commands the solenoid off, the
exhausting fluid is stopped and the 1-2-3-4 pressure is high. When commanded on,
the clutch PC solenoid 5 regulates the amount of exhausting transmission
fluid. Solenoid power is supplied by the TCM through a high side
driver (HSD). The HSD protects the circuits and components that the TCM
powers. Should the circuit overload the driver will shutdown.
After the overload is removed the HSD reset.
Conditions
for Running the DTC
P2723
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No
DTCs P0716 or P0717. |
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No
DTCs P0722 or P0723. |
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No
DTCs P1825 or P1915. |
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The
transmission input shaft speed is greater than 60 RPM. |
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1-2-3-4
clutch is commanded ON. |
P2724
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No
DTCs P0716 or P0717. |
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No
DTCs P0722 or P0723. |
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No
DTCs P1825 or P1915. |
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The
transmission input speed is equal to or greater than 200 RPM. |
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The
transmission output shaft speed is equal to or greater than 200 RPM. |
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1-2-3-4
clutch is commanded OFF. |
Conditions
for Setting the DTC
P2723
The TCM detects an
incorrect on-coming clutch gear ratio, or flare, when the 1-2-3-4 clutch is
commanded ON for 0.5 seconds and either fail case
below is achieved:
Fail
Case 1
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Output
shaft speed is greater than 60 RPM. |
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The
transmission input shaft speed is greater than 75 RPM from the
anticipated input shaft speed. |
Fail
Case 2
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Output
shaft speed is less than 60 RPM. |
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The
transmission input shaft speed is greater than 75 RPM from the
anticipated input shaft speed. |
P2724
The TCM detects an
incorrect off-going clutch gear ratio, or tie-up, when the 1-2-3-4 clutch is
commanded OFF for 0.5 seconds and the following is achieved:
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The
1-2-3-4 clutch commanded pressure is 0 kPa for
a calculated amount of time. |
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The
transmission input shaft speed is less than 40 RPM from the anticipated
input shaft speed. |
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The
output shaft speed is greater than 60 RPM. |
Action
Taken When the DTC Sets
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DTCs
P2723 and P2724 are Type A DTCs. |
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The
TCM freezes transmission adaptive functions. |
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DTC P2723
defaults to Reverse, Park, Neutral, 5th, or 6th gear. |
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DTC P2724
defaults to Reverse, Park, Neutral, 1st, or 2nd gear. |
Conditions
for Clearing the DIC/DTC
DTCs P2723 and P2724 are
Type A DTCs.
When attempting to set
transmission performance DTCs, observe the Freeze Frame and Failure Records to
assist in duplicating the failure conditions.
Schematic
Reference
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Connector
End View Reference
Electrical
Information Reference
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DTC
Type Reference
Powertrain Diagnostic Trouble Code (DTC) Type Definitions
Scan
Tool Reference
Control
Module References for scan tool information
Special
Tools
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DT-47825
Control Solenoid Test Plate |
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DT-47825-10
Jumper Harness |
Important: Before clearing the DTC, use
the scan tool in order to record the Freeze Frame and Failure Records.
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If
the DTC resets, go to Circuit/System Testing. |
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If
the pressure is out of specification, correct this concern first. |
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If
the DTC resets, continue on with testing. |
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If
a concern is found, repair or replace the control solenoid (w/body and TCM)
valve assembly. |
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If
the solenoid is found to be leaking or stuck closed, replace the control
solenoid (w/body and TCM) valve assembly. |
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If
a concern if found in the valve body, repair or replace the valve body as
necessary. |
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If
a concern is found in the 1-2-3-4 clutch assembly, repair or replace as
necessary. |
Perform the Control
Solenoid Valve and Transmission Control Module Assembly Inspection .
|
Operating Conditions |
Normal Operation |
Stuck OFF |
Stuck ON |
|
Steady State Gears 1,
2, 3, 4 |
1, 2, 3, 4 |
Neutral |
1, 2, 3, 4 |
|
Steady State Gears 5,
6 |
5, 6 |
5, 6 |
1, 2, 3, 4 |
|
Garage Shift |
Park/Neutral/Reverse to Drive |
Neutral |
Drive Gear |
|
Downshift from gears
5, 6 to 1, 2, 3, 4 |
1, 2, 3, 4 |
Neutral |
1, 2, 3, 4 |
|
Upshift from gears 1, 2, 3, 4
to 5, 6 |
5, 6 |
5, 6 |
1, 2, 3, 4 |
Perform the Diagnostic
Repair Verification after completing the diagnostic procedure.
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Control
valve body replacement. Refer to Control
Valve Lower Body and Upper Body Replacement . |
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Control
solenoid (w/body and TCM) valve assembly replacement. Refer to Control
Module References for replacement, setup, and programming. |
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1-2-3-4
clutch assembly repair or replace. Refer to 1-2-3-4
and 3-5 Reverse Clutch Overhaul . |
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Perform
the Service
Fast Learn Adapts if internal transmission repairs are performed. |