First thing the tech did go into engine room and find the PCUs. Mine were located next to each other towards rear of starboard engine. With power off he unplugged connections to the pcu and reconnected to the opposite one. He did have to unscrew one of them because they were just a bit to far apart for wiring to reach the connections. He then had me start the engines. Both started but threw a code because the are “matched” to their respective engine controllers. This was done to verify that the PCU was not the problem. He then swapped them back and installed the donor HCU. It was preprogrammed for my engine. Once installed you have to perform a calibration for the shift controls. That was fairly easy to do. These were all recommended trouble shooting steps from Volvo Tech Support. They guided the tech through the repair.
First thing the tech did go into engine room and find the PCUs. Mine were located next to each other towards rear of starboard engine. With power off he unplugged connections to the pcu and reconnected to the opposite one. He did have to unscrew one of them because they were just a bit to far apart for wiring to reach the connections. He then had me start the engines. Both started but threw a code because the are “matched” to their respective engine controllers. This was done to verify that the PCU was not the problem. He then swapped them back and installed the donor HCU. It was preprogrammed for my engine. Once installed you have to perform a calibration for the shift controls. That was fairly easy to do. These were all recommended trouble shooting steps from Volvo Tech Support. They guided the tech through the repair.
I had no error codes. The dash would not power up and go through the system checks. When the tech hooked up the computer with Vodia there were no codes showing because they clear with key cycle.
