power button

[seventh path]

one of my friends has a 3 ltr auto and his power button doesn't work any more......i was wondering if there's a switch in the auto that i can fix or whether anyone else canm tell me whats wrong......

[Professor Vert.]

its a very simple circuit, check there is power at one side of the switch on the shifter, if there is then try earthing it to the body somewhereand see if the light comes on. theres no switch in the auto, shift patterns are controlled by the trans ECU which i think is located to the right of the steering wheel and down about knee height behind some plastic. If there's no power at the switch, trace thatwire backto the trans ECU and check for power out at the ECU, if none there then possibly a faulty ECU. You'll probly want good reliable wiring diagrams.