i have constant 12v, good batt signal, good ign power, good ground to the ecm pins. i have tried my original ecu 99 gs300 and it seems to have lost communication and i’ve tried a 2000 gs300 ecu and it has no communication either. surely a pfl ecu on a pfl would work?? im lost and close to parting out or selling the car ( tons of goodies really don’t want to )
had the infamous annoying no start security light. checked transponder antenna amplifier and cleaned the module, had capacitors replaced in ECU, had cloned a new key off my master key and still no luck. My car just died ( PRNDL ) on dash wouldn’t illuminate, can’t connect scanner to OBD and on HVAC control panel it wouldn’t show temp outside, and the coolant gauge went straight to cold.
asides all the yappin i was wondering if i can use a 2000 gs300 ecu on my 1999 , my 1999 PN is 89661-3A551, PN on 2000 gs ecu is 89666-30030
i have the skills and equipment to de solder and resolder my IC900 chip from my ecu to the “new“ ecu.
PLEASE LET ME KNOW ASAP THE CAR IS STRANDED AT A GAS STATION AND I HAVE A 2000 GS ECU ON HAND