kmoenck

At some point in the past couple months, all the power windows stopped working on my 92 ls400. Everything else seems to be fine (power locks, tilt, etc...). Fuses and circuit breaker appear to be ok. I have the wiring diagram and have tested power at the circuit breaker (ok) and power at pin 9 in the connector for the master control switch. With the key on, pin 9 has no power. I suspect the power main relay or the theft deterrent ECU that activates it but I'm having trouble locating the relay (not sure where to look).

Is there one relay that controls both the power windows and moonroof and if so, where is it? Or is there something else I should be looking at? Any help would be appreciated.

- Kaj Moenck

vicious

good q, my passenger window (93 ls400) switch is dying out.. have to use my drivers side switch to roll it down lol

RA40

iTrader: (6)

On a Nissan I once owned, the switch contacts had all kinds of carbon deposits on the contacts. This prevented the window switches from working properly. Maybe worth a shot to open the switch assembly up (if possible) and spray some electrical contact cleaner in there.