DTC P150C
Diagnostic Instructions
DTC Descriptor
DTC P150C: Transmission Control Module Engine
Speed Request Signal Message Counter Incorrect
Circuit/System Description
To improve vehicle shift feel, the transmission control
module (TCM) is constantly sending the engine control
module (ECM) serial data messages with information regarding
its request for modifying engine speed or torque. The ECM sets this
code when it detects a discrepancy in the structure of this message
causing its integrity to be questioned.
An intermittent fault in the controller area network (CAN)
circuits will cause DTC P150C to set.
Conditions for Running the DTC
| • |
No other CAN errors are present. |
Conditions for Setting the DTC
The ECM detects greater than 2 message count errors.
Action Taken When the DTC Sets
| • |
The ECM Disables engine speed requests from
transmission. |
| • |
DTC P150C is a Type B DTC. |
| • |
The TCM commands maximum line pressure during
shifts. |
Conditions for Clearing the DTC
DTC P150C is a Type B DTC.
Reference Information
Description and Operation
Data Link Communications Description and Operation
DTC Type Reference
Powertrain Diagnostic Trouble Code (DTC) Type Definitions
Scan Tool Reference
Control Module References for scan tool information
Circuit/System Verification
Repair Instructions
Perform the
Diagnostic Repair Verification after completing the diagnostic
procedure.
Control Module References for control solenoid valve assembly
replacement, set-up, and programming.
|
