DTC P2723 or P2724
| DTC P2723 or P2724 |
| Diagnostic Instructions |
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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.
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| DTC Descriptors |
DTC P2723
Pressure Control Solenoid Valve 5 Stuck Off
DTC P2724
Pressure Control Solenoid Valve 5 Stuck On
| Circuit/System Description |
The clutch pressure control (PC) solenoid 5 is part of the control solenoid valve assembly which has no serviceable components. The clutch's pressure control solenoid 5 regulates the transmission fluid pressure (TFP) to 1-2-3-4 clutch's regulator valve that controls the pressure to the 1-2-3-4 clutch. The transmission control module (TCM) calculates gear ratio based on the RPM signals from the input speed sensor (ISS) and the output speed sensor (OSS). The TCM compares the expected transmission gear ratio to the calculated gear ratio for each commanded gear.
| Conditions for Running the DTC |
P2723
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DTC P0101, P0102, P0103, P0106, P0107, P0108, P0171, P0172, P0174, P0175, P0201, P0202, P0203, P0204, P0205, P0206, P0207, P0208, P0300, P0301, P0302, P0303, P0304, P0305, P0306, P0307, P0308, P0401, P042E, P0716, P0717, P0722, P0723, or P182E is not set.
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The ignition voltage is 8.6 volts or greater.
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The high side driver (HSD) is enabled.
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The output speed is 16 RPM or greater, or the throttle position is 0.5 percent or greater.
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The throttle position signal is valid.
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The engine speed is 400 RPM or greater for 5 seconds.
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The transmission fluid temperature (TFT) is -7°C (19°F) or greater.
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P2724
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DTC P0101, P0102, P0103, P0106, P0107, P0108, P0171, P0172, P0174, P0175, P0201, P0202, P0203, P0204, P0205, P0206, P0207, P0208, P0300, P0301, P0302, P0303, P0304, P0305, P0306, P0307, P0308, P0401, P042E, P0716, P0717, P0722, P0723, or P182E is not set.
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The ignition voltage is 8.6 volts or greater.
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The HSD is enabled.
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The TFT is -7°C (19°F) or greater.
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The transmission output shaft speed is 350 RPM or greater.
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The transmission input speed is 200 RPM or greater.
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The commanded and attained range is not 1st gear.
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| Conditions for Setting the DTC |
P2723
The TCM has detected an incorrect gear ratio or neutral condition when the 1-2-3-4 clutch is commanded ON. This condition must occur 3 times.P2724
The TCM has detected an incorrect gear ratio change when the 1-2-3-4 clutch is commanded OFF during a shift. This condition must occur 3 times.| Action Taken When the DTC Sets |
P2723
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DTC P2723 is a Type A DTC.
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The TCM freezes transmission adaptive functions.
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The TCM commands maximum line pressure.
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The TCM inhibits Tap Up/Down function.
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The TCM inhibits manual shifting of forward gears.
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The TCM limits the transmission to Reverse and fifth gear operation.
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P2724
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DTC P2724 is a Type A DTC.
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The TCM freezes transmission adaptive functions.
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The TCM commands maximum line pressure.
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The TCM inhibits Tap Up/Down function.
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The TCM inhibits manual shifting of forward gears.
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The TCM limits the transmission to Reverse, first, or third gear operation.
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| Conditions for Clearing the DIC/DTC |
DTCs P2723 and P2724 are Type A DTCs.
| Diagnostic Aids |
Before performing a road test, configure and setup the scan tool for snapshot mode. This allows you to display, monitor, and verify multiple transmission data parameters at one time, after the road test.
| Reference Information |
Connector End View Reference
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Component Connector End Views
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Inline Harness Connector End Views
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Description and Operation
Transmission General Description
Electrical Information Reference
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Circuit Testing
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Connector Repairs
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Testing for Intermittent Conditions and Poor Connections
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Wiring Repairs
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DTC Type Reference
Powertrain Diagnostic Trouble Code (DTC) Type Definitions
Scan Tool Reference
Control Module References for scan tool information
| Circuit/System Verification |
| 1. |
Engine idling in Park, with parking brake applied and drive wheels chocked. |
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| 2. |
Perform the
Transmission Fluid Level and Condition Check
to verify correct fluid level and condition.
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| 3. |
Monitor the Transmission Fluid Pressure Switch 4 parameter with a scan tool. Place the gear select lever in Park, Reverse, and Neutral range. Verify the Transmission Fluid Pressure Switch 4 parameter states are correct for Park, Reverse, and Neutral. Refer to
Transmission Fluid Pressure Switch Logic
.
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| 4. |
Place the gear select lever in Drive range. Command the shift transmission with a scan tool through all forward ranges. Verify the Transmission Fluid Pressure Switch 4 parameter states are correct for all forward ranges. Refer to
Transmission Fluid Pressure Switch Logic
.
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Engine idling in Park, verify with a scan tool the Transmission ISS/OSS Supply Voltage parameter displays OK.
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Engine idling in Park. Observe the Transmission ISS parameter on the scan tool, while varying the engine speed. The Transmission ISS parameter should vary with engine speed and not drop out.
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Operate the vehicle at 16-32 km/h (10-20 mph) while observing the Transmission OSS parameter on the scan tool. The Transmission OSS parameter should vary with the vehicle speed and not drop out.
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Perform the road test . Verify the transmission operation performs as indicated, in the road test instructions |
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Review the scan tool snapshot data. Verify the following transmission data parameters display the correct values for each gear range.
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Transmission ISS
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Transmission OSS
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Pressure Control Solenoid Valve 5 Pressure Command
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Transmission Fluid Pressure Switch 4
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After you complete the steps described above, check the diagnostic trouble code is not reset by driving the vehicle according to the conditions for running diagnostic trouble codes (DTC). You can also drive the vehicle according to the conditions you see in Freeze Frame/ Failure records. If the vehicle passes the circuit/system verification procedure, then stop. Do not perform the circuit/system test or component test as this may result in unnecessary part replacement. Refer to
Testing for Intermittent Conditions and Poor Connections
.
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| Circuit/System Testing |
| 1. |
Perform the
line pressure check
. Check that the transmission's line pressure is within the range specified in the table Line PC-solenoid valve pressure. Refer to
Solenoid Valve Pressure
.
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| 2. |
If not within the specified ranges, refer to
Fluid Pressure High or Low
.
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| 3. |
Remove control solenoid valve assembly Q8 with ignition OFF. See
Replacing control solenoid valve assembly and transmission control module
.
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Perform the
Test of the control solenoid valve assembly and the transmission control module's solenoid performance
. A pressure change should occur for each solenoid.
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If the Q8 control solenoid valve assembly does not pass the performance test, replace the Q8 control solenoid valve assembly.
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Listed in the table below, are conditions for each component that could set DTC P2714 or P2715. Carefully inspect each component for that condition. Repair or replace as necessary.
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| DTCs | Component | Condition | |||||||||||||||
| P2723 | Control Valve Upper Body Assembly (349) | Manual shift detent (w/shaft position switch) lever assembly not engaged with manual shaft | |||||||||||||||
| P2723 | Control Valve Upper Body Assembly (349) | Clutch select valve 3 (345) stuck Off - debris, binding, damaged valve, or scored bore | |||||||||||||||
| P2723 P2724 | Lower Control Valve Body Assembly (374) |
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| P2723 P2724 | Q8 Control Solenoid Valve Assembly (314) |
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| P2723 | 1-2-3-4 Clutch Assembly (51) | 1-2-3-4 clutch piston (414) cracked/damaged/leaking | |||||||||||||||
| P2723 | 1-2-3-4 Clutch Assembly (51) | 1-2-3-4 clutch backing plate retaining ring (429) not seated/oriented, causing clutch pack/piston overtravel | |||||||||||||||
| P2723 | Low and Reverse Clutch Assembly (OWC) |
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| P2723 | A/Trans Case (51) | 1-2-3-4 clutch fluid passage seal (65) damaged/leaking | |||||||||||||||
| P2723 |
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| P2723 | A/Trans Fluid Filter Assembly (201) | Oil filter (201) or filter seal (202) loose or damaged | |||||||||||||||
| P2723 | Reaction Sun Gear Assembly (466) |
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| Repair Instructions |
| Note | ||
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Perform the
Resetting of the transmission's adaption
after all transmission repairs.
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Before replacing the TCM, perform the
Control Solenoid Valve and Transmission Control Module Assembly Inspection
.
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Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
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Control Valve Lower Body and Upper Body Replacement
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Low and Reverse Clutch and 1-2-3-4 Clutch Plate Removal
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Control Module References
for control solenoid valve assembly replacement, setup, and programming
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