P2719
DTC P2719-P2721
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis Strategy Based Diagnosis for an overview of the diagnostic approach.
* Diagnostic Procedure Instructions Diagnostic Procedure Instructions provides an overview of each diagnostic category.
DTC Descriptors
DTC P2719
-
Pressure Control Solenoid 4 System Performance
DTC P2720
-
Pressure Control Solenoid 4 Control Circuit Low Voltage
DTC P2721
-
Pressure Control Solenoid 4 Control Circuit High Voltage
Diagnostic Fault Information
Circuit/System Description
The transmission control module supplies 12 volts to the clutch pressure control solenoid 4 through the high side driver 1 circuit. The transmission control module controls the clutch pressure control solenoid 4 through the clutch pressure control solenoid 4 control circuit. The normally low clutch pressure control solenoid 4 flows fluid to the 1-3 reverse clutch, or cools motor 1 depending on shift solenoid 1 position, when commanded ON and exhausts fluid when commanded OFF. The clutch pressure control solenoid 4 regulates the transmission fluid pressure to the 1-3 reverse clutch. The clutch pressure control solenoid 4 is part of the control solenoid valve assembly and is not serviced separately.
Conditions for Running the DTC
* The propulsion system is active.
* The system voltage is 11-16 V.
Conditions for Setting the DTC
P2719
The transmission control module detects an internal electrical performance malfunction of the clutch pressure control solenoid 4 control circuit for 1 second.
P2720
The transmission control module detects an internal low voltage electrical malfunction of the clutch pressure control solenoid 4 control circuit for 1 second.
P2721
The transmission control module detects an internal high voltage electrical malfunction of the clutch pressure control solenoid 4 control circuit for 1 second.
Action Taken When the DTC Sets
* P2719 is a Type B DTC.
* P2720 and P2721 are Type A DTCs.
Conditions for Clearing the DTC
* P2719 is a Type B DTC.
* P2720 and P2721 are Type A DTCs.
Diagnostic Aids
When this fault is present the system waits for a performance or clutch slip DTC to set.
Reference Information
Schematic Reference
Automatic Transmission Controls Schematics Electrical Diagrams
Connector End View Reference
Component Connector End Views Hybrid/EV Battery Pack X1
Electrical Information Reference
* Circuit Testing Circuit Testing
* Connector Repairs Connector Repairs
* Testing for Intermittent Conditions and Poor Connections Testing for Intermittent Conditions and Poor Connections
* Wiring Repairs Wiring Repairs
DTC Type Reference
Powertrain Diagnostic Trouble Code (DTC) Type Definitions Powertrain Diagnostic Trouble Code (DTC) Type Definitions
Scan Tool Reference
Control Module References Programming and Relearning for scan tool information
Circuit/System Verification
1. Vehicle ON, verify the transmission fluid temperature is between 50-80°C (122-176°F).
2. Drive the vehicle, observe the scan tool Pressure Control Solenoid Valve 4 Test Status parameters. The reading should display OK.
• If the reading is not within the specified range, replace the Q8 control solenoid valve assembly.
Repair Instructions
Perform the Diagnostic Repair Verification Verification Tests after completing the diagnostic procedure.
* Control Module References Programming and Relearning for Control Solenoid Valve Assembly and Transmission Control Module Assembly replacement, programming, and setup.
* Perform the Reset Transmission Adapts Programming and Relearning following all transmission related repairs.