Right, you have changed shift motor, angle sensor, ECU and shift buttons, so if it is electrical, it is a loose wire in the harness. Just to be certain, check the voltage across the battery with engine running, should be 13v to 14.5v, as voltages outside this can upset the ECU. As the fault is intermittent, are you absolutely certain it will change on the emergency lever correctly EVERY TIME?
One other point, Honda sent out a batch of faulty angle sensors about ten years ago, all decent dealers should have disposed of them, but you never know, just to be certain you didn't buy a dud, they have "Made in Mexico" written on them.
|