Transmissions Control Systems

Diagnostic Trouble Code Chart

Transaxle Tester
The Transaxle Tester is used to diagnose electronically controlled transaxle and is used in conjunction with the pinpoint tests. The tests should be carried out in order. Installing the Transaxle Tester allows separation of the vehicle electronics and the transaxle electronics. See the Transaxle Tester manual for these tests.
^ Bench Testing - Engine Off
^ Resistance/Continuity Test
^ Solenoid Voltage Test
^ Dynamic Testing - Engine On
^ EPC Solenoid
^ Transaxle Engagement
^ Upshifts/Downshifts
^ Torque Converter Clutch (TCC) Engagement
^ Coast Clutch Engagement
^ Turbine Shaft Speed (TSS) Sensor
^ Output Shaft Speed (OSS) Sensor
^ Transmission Range (TR) Sensor
^ Switch Test - Park/Neutral, Backup Lamp, and Operational Circuits