j spec toyota mirror ecu wiring problem

Will do. I will let you know the outcome when I get a chance to finsh wiring this weekend.

Just jumping in on this but ( please enlighten me or correct me if I'm on the wrong path ereh ) unless the ECM cuts power through a voltage detecting circuit, won't the contant power going to the mirror eventually burn out the motor ?Jeff

Velocity Custom Home Theater

Mobile Audio/Video Specialist

Morden, Manitoba CANADA

Velocity Motors wrote: Just jumping in on this but ( please enlighten me or correct me if I'm on the wrong path ereh ) unless the ECM cuts power through a voltage detecting circuit, won't the contant power going to the mirror eventually burn out the motor ?

The point is that the Mirror Tilting ECU ONLY operates on that pin (12) when the car is at ACC or ON. When the car is off, the voltage is at 0. So the bypass was to have the constant 12V+ ONLY go live when the car was off and disable when the car is turned on. A sort of a timeshare for that same PIN connector.

Not sure if you meant that the mirror will always be trying to fold with the 12V constant, but remember that the input will be added pre-switch. So w/o pressing the button, the mirror sees no juice. The end result is that when the car is turned to the off position, the relay will kick 12V+ to the fold trigger and allow the juice to be added to the shared PIN 12 without the fear of shorting the dormant mirror ECU. As soon as the ignition is turned on, the juice will be stopped to the fold button and the mirror ECU will be allowed to do its job uninterrupted. Yes, this means that the fold button will only work with the car off, but this seems like a reasonable compromise.