P215C
DTC P215C
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 Instructionsprovides an overview of each diagnostic category.
DTC Descriptor
DTC P215C
- Output Shaft Speed (OSS) - Wheel Speed Correlation
Diagnostic Fault Information
Typical Scan Tool Data
Circuit/System Description
The output speed sensor assembly has 2 internal hall-effect type sensors, and is capable of sensing both speed and direction. The output speed sensor assembly mounts to the A/T rear case assembly and is connected to the control solenoid valve assembly through a wire harness and connector. The sensor faces the hybrid direct, 2-3-4 clutch housing assembly machined teeth surface. The sensor receives 8.3-9.3 volts on the OSS supply voltage circuit from the transmission control module (TCM). As the output shaft rotates, the sensor produces a signal frequency based on the machined surface of the output shaft.
The two sensor elements in the output speed sensor assembly are spaced approximately 1/2 a tooth apart.
* When the vehicle is moving in a forward direction, sensor A detects a particular tooth before sensor B.
* When the vehicle is moving in a reverse direction, sensor B detects a particular tooth before sensor A.
The electronics in the sensor combine the two signals and send a signal with a different pulse width. This signal is interpreted by the TCM for speed and direction and is transmitted through the serial data circuits to the engine control module (ECM) and the hybrid powertrain control module. The ECM, hybrid powertrain control module and TCM compare the OSS signal with the ABS wheel speed sensor signal.
Conditions for Running the DTC
* The vehicle speed is greater than 10 km/h (6 mph).
* Output speed calculated from the wheel speed sensors and the motors is less than 150 RPM.
* The difference between the calculated output speed from the motors and the calculated output speed from the wheel speed sensors is less than 100 RPM.
Conditions for Setting the DTC
The TCM OSS signal and the average ABS wheel speed sensor and the drive motor signals differ by greater than 140 RPM for greater than 10 seconds.
Action Taken When the DTC Sets
* P215C is a Type B DTC.
* The TCM calculates output speed based on the ABS wheel speed and the drive motor speed signals.
* The TCM calculates vehicle speed based on the wheel speed sensors.
Conditions for Clearing the DTC
P215C is a Type B DTC.
Diagnostic Aids
* Vehicles equipped with a transfer case may set this DTC if the vehicle is moving while the transfer case is in the Neutral selection. Review the freeze frame records with a scan tool to identify if this DTC was set by the vehicle operator. Explain proper transfer case shifting procedures as necessary.
* Inspect the output speed sensor, harness, and connector pins for metallic debris and the hybrid direct, 2-3-4 clutch housing assembly machined teeth for damage or misalignment. Even one bent or misaligned tooth, and or contact with the output speed sensor, may cause this DTC to set. Proper torque of 9-13 Nm (80-115 lb in) to the output speed sensor assembly mounting bolt is critical to proper output speed sensor operation. The hybrid system is very sensitive to the output speed sensor signal for overall operation.
Reference Information
Schematic Reference
Automatic Transmission Controls Schematics 2ML70 - Automatic Transmission
Connector End View Reference
Component Connector End Views Connector End Views By Name
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 Relearningfor scan tool information.
Circuit/System Verification
Operate the vehicle at 16-32 km/h (10-20 mph) while observing the Transmission OSS and ABS wheel parameters on the scan tool. Inspect for the following mechanical conditions:
* Loose, misaligned, output speed sensor
* Broken driveline components
The OSS and ABS wheel speed signal displays should not vary by greater than 10 km/h (6 mph).
Circuit/System Testing
Note: For vehicles equipped with a transfer case, review Diagnostic Aids.
1. Verify that output speed sensor DTCs P0721, P0722, or P0723 are not set in the TCM.
• If any of the DTCs are set, refer to Diagnostic Trouble Code (DTC) List - Vehicle Diagnostic Trouble Code (DTC) List - Vehicle.
2. Verify that ABS DTCs C0035-C0050, C1207-C1210, C1221-C1228, C1232-C1235, C005A, C0245, or C122E are not set in the electronic brake control module (EBCM).
• If any of the DTCs are set, refer to Diagnostic Trouble Code (DTC) List - Vehicle Diagnostic Trouble Code (DTC) List - Vehicle.
3. Inspect the output speed sensor, harness, and connector pins for metallic debris and the hybrid direct, 2-3-4 clutch housing assembly machined teeth for damage or misalignment. Even one bent or misaligned tooth, and or contact with the output speed sensor, may cause this DTC to set. Proper torque of 9-13 Nm (80-115 lb in) to the output speed sensor assembly mounting bolt is critical to proper output speed sensor operation. The hybrid system is very sensitive to the output speed sensor signal for overall operation.
• If damage is observed, replace the damaged component.
4. Program the control module which set the DTC with the latest software version and retest for DTCs.
• If the DTC resets, replace the control module which set the DTC.
Repair Instructions
Perform the Diagnostic Repair Verification Verification Tests after completing the diagnostic procedure.
* Output Speed Sensor Replacement 2ML70 - Automatic Transmissionfor Output Speed Sensor replacement.
* Rear Case and Gasket Replacement for Hybrid Direct, 2-3-4 Clutch Housing Assembly replacement.
* Control Module References Programming and Relearningfor ECM or HPCM replacement, programming and setup.