Transmission Identification

HYDRA-MATIC 4T60-E Automatic Transaxle.:

PCM Input/Output Control Of Transmission.:

Solenoid Operation:

The HYDRAMATIC 4T60-E transmission is electronically controlled by the Powertrain Control Module (PCM). Transmission shifts are carried out by electro-hydraulic solenoids as requested by the PCM. Inputs to the PCM determine the shift pattern and Torque Converter Clutch (TCC) operation.

Four solenoids in the transaxle respond to the PCM signals. Two solenoids, SHIFT A and SHIFT B, control shifts. The TCC APPLY and TCC Pulse Width Modulation (TCC MOD or PWM MOD) solenoids control the apply and release of the TCC.

There are no trouble codes for the shift solenoids. PCM code DTC 39 indicates a TCC fault.