Pinpoint Tests DP: Powertrain Control Module (Pcm) Vehicle Speed: Introduction
WARNING: This page is about a different variant/trim than selected.
WARNING:
To prevent the risk of high-voltage shock, always follow precisely all warnings and service instructions, including instructions to depower the system. The high-voltage system utilizes approximately 300 volts DC, provided through high-voltage cables to its components and modules. The high-voltage cables and wiring are identified by orange harness tape or orange wire covering. All high-voltage components are marked with high-voltage warning labels with a high-voltage symbol. Failure to follow these instructions may result in serious personal injury or death.
The vehicle has three methods of calculating vehicle speed:
- from the anti-lock brake system (ABS)
- from the transmission control module (TCM)
- from the PCM engine speed and the TCM generator speed
This pinpoint test is intended to determine which of the three vehicle speed inputs caused the PCM vehicle speed diagnostic trouble code (DTC).