Lorenzo Ortiz from Phillips Transmission had a 2005 Acura TSX with the MCTA five-speed transmission come into his shop for repairs. After it was repaired and installed into the vehicle, it had a new problem. The car would not start. The immobilizer lamp was flashing and the scan tool could not communicate with the engine control module, yet all other modules would communicate.
The customer had multiple concerns: 30-40 mph is the top speed, drive modes won’t switch, neutrals out in reverse, stuck in low gear at times, can’t shift manually, only works in drive Stored DTC 2767, Component Y3/6n3 (speed sensor) is faulty.
Anthony Nuzzo, the owner of Accord Transmission & Differential, originally gave us a call on a 2003 Saab 9-3 2.0L Turbo, using the AW50-40LE transmission that was experiencing a harsh engagement into reverse when hot. His tech Pete Morreale was out on vacation so Anthony was handling the diagnostics, making him quite a busy man.
Their turbine-speed sensors look similar but won’t interchange.
At first glance you might think the AX4S and AX4N turbine-speed sensors are the same. However, a closer look will show you that the AX4S sensor is a little longer – which means you easily could install the wrong sensor in a unit by mistake.