Title: Inspect the operation of the automated mechanical transmission and manual electronic shift controls, and others related to the transmission.
Course: Diesel Equipment Technology III (20107-III) > Section: Drive Train: Servicing the Transmission

Inspection should include

- checking the shift, range, and splitter solenoids; shift motors; indicators; speed and range sensors; electronic control units and transmission control units (ECU/TCU); neutral in gear and reverse switches; and wiring harness
- following original equipment manufacturer (OEM) guidelines for proper troubleshooting steps
- test-driving the unit to verify proper operation.

ASE 1: II. Drive Train: C. Transmission (P-1)

Process/Skill Questions:

- How are faults verified in an automated transmission?
- Would low voltage cause shifting or performance issues?
- How would a short to the ground affect voltage?