P215B
DTC P215B
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 Descriptor
DTC P215B
- Vehicle Speed - Output Shaft Speed (OSS) Correlation
Diagnostic Fault Information
Typical Scan Tool Data
Circuit/System Description
The A/Trans Output Speed Sensor Assembly has 2 internal hall-effect type sensors, and is capable of sensing both speed and direction. The output speed sensor is internal to the transmission and mounts to the A/Trans case assembly and is connected to the transmission control module (TCM) through the control solenoid valve assembly and transmission internal harness. The A/Trans Output Speed Sensor Assembly faces the park gear machined teeth surface. The sensor receives 8.3-9.3 volts on the OSS supply voltage circuit from the 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 transmission control module 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 transmission control module compare the output speed sensor signal with the anti lock brake system (ABS) wheel speed sensor signal. The TCM is part of the control solenoid valve assembly and is not serviced separately. The hybrid powertrain control module is part of the drive motor generator power inverter module and is not serviced separately.
Conditions for Running the DTC
* The vehicle speed is greater than 10 km/h (6 mph).
* The vehicle is not in Park or neutral.
Conditions for Setting the DTC
ECM
The ECM OSS signal and the ABS wheel speed sensor signals differ by greater than 10 km/h (6 mph) for more than 10 seconds.
Hybrid Powertrain Control Module
The ECM OSS signal and the ABS wheel speed sensor signals differ by greater than 10 km/h (6 mph) for more than 10 seconds.
Action Taken When the DTC Sets
ECM
* The ECM commands reduced vehicle power.
* PROPULSION POWER REDUCED message is displayed on the driver information center.
Hybrid Powertrain Control Module
The hybrid powertrain control module calculates the transmission output speed.
Conditions for Clearing the DTC
ECM
P215B is a Type A DTC.
Hybrid Powertrain Control Module
P215B is a Type B DTC.
Diagnostic Aids
The hybrid system is very sensitive to the OSS signal for overall operation.
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. Inspect for broken driveline components.
2. Operate the vehicle at 16-32 km/h (10-20 mph) while observing the Transmission OSS and ABS wheel parameters on the scan tool.
The OSS and ABS wheel speed signal displays should not vary by greater than 10 km/h (6 mph).
Circuit/System Testing
1. Verify that DTC C0035-C0050, C1207-C1210, C1221-C1228, C1232-C1235, C005A, C0245, C122E, P0721, P0722, P0723, U0073, U0074, U0077, U0101, U0129, or U1833 is not set.
• If any of the DTCs are set, refer to Diagnostic Trouble Code (DTC) List - Vehicle Diagnostic Trouble Code (DTC) List - Vehicle.
2. 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.
* Control Module References Programming and Relearning for ECM or Drive Motor Generator Power Inverter Module, also called the Power Inverter Module, replacement, programming, and setup.
* Perform the Reset Transmission Adapts Programming and Relearning following all transmission related repairs.