ASEP 152 - Automatic Transmission Level 2

Credits: 1
Instructional Contact Hours: 2

Practices the service and repair of many automatic transmissions. Practices ASE Education Foundation tasks to AST (Automotive Service Technology) level related to automatic transmissions. Requires meeting all related GM ASEP training requirements.

Prerequisite(s): ASEP 102 or AUTO 102 previously or concurrently and AUTO 149 previously or concurrently
Corequisite(s): None
Lecture Hours: 15 Lab Hours: 15
Meets MTA Requirement: None
Pass/NoCredit: No

Outcomes and Objectives

1. Diagnose and complete Level 2 ASE Education Foundation tasks as listed below:

A. Research vehicle service information such as fluid type, vehicle service history, service precautions, technical service bulletins, and recalls including vehicles equipped with advanced driver assistance systems (ADAS).

B. Identify automatic transmission and transaxle components and configurations.

C. Retrieve and record DTCs, OBD monitor status, and freeze frame data; clear codes and data when directed.

D. Inspect transmission fluid condition; check fluid level; inspect for leaks on transmission or transaxle equipped with a dipstick.

E. Inspect transmission fluid condition; check fluid level; inspect for leaks on transmission or transaxle not equipped with a dipstick.

F. Diagnose transmission/transaxle gear reduction/multiplication concerns using driving, driven, and held member (power flow) principles.

G. Diagnose pressure concerns in a transmission using hydraulic principles (Pascal's Law).

H. Identify and interpret transmission/transaxle concerns, differentiate between engine performance and transmission/transaxle concerns; determine needed action.

I. Diagnose fluid loss and condition concerns; determine needed action.

J. Perform stall test; determine needed action.

K. Perform lock-up converter system tests; determine needed action.

L. Perform pressure tests on transmissions/transaxles equipped with electronic pressure control; determine needed action.

M. Diagnose electronic transmission/transaxle control systems using appropriate test equipment and service information.

I. In-Vehicle Transmission/Transaxle related Tasks:

A. Inspect, adjust, and/or replace external manual valve shift linkage, transmission range sensor/switch, and/or park/neutral position switch.

B. Drain and replace fluid and filter(s); use proper fluid type per manufacturer specification.

C. Perform relearn procedures.

D. Inspect, replace and/or align power train mounts.

E. Inspect for leakage; replace external seals, gaskets, and bushings.

F. Inspect, test, adjust, repair, and/or replace electrical/electronic components and circuits.

II. Off-Vehicle Transmission and Transaxle related Tasks:

A. Describe the operational characteristics of a continuously variable transmission (CVT).

B. Describe the operational characteristics of a hybrid vehicle drive train.

C. Remove and reinstall transmission/transaxle and torque converter; inspect engine core plugs, rear crankshaft seal, dowel pins, dowel pin holes, and mating surfaces.

D. Inspect, leak test, flush, and/or replace transmission/transaxle oil cooler, lines, and fittings.

E. Inspect converter flex (drive) plate, converter attaching bolts, converter pilot, converter pump drive surfaces, converter end play, and crankshaft pilot bore.