Automatic Transmission Control Module – Mazda (aw27189e1a)

Automatic Transmission Control Module converts a physical condition into a signal the powertrain module acts on. The module compares that signal against an expected range at every start-up, so a failing unit is usually logged before it becomes a driveability complaint.

Replace the Control Module when the fault repeats with the harness already ruled out, when resistance drifts as the part heats up, or when a connector has corroded past cleaning. Swapping a sensor to chase a wiring fault is the most common wasted repair on these circuits.

For this Control Module the reference is aw27189e1a, in our Transmission Control range. Compare it with the number on the part you are replacing rather than with a photograph.

Genuine MAZDA part for the Control Module. Where the manufacturer has superseded a number, the current reference is the one that ships.