95 Disco: Cruise control isn't working. Master switch lights up, vac hoses ok. Pump never comes on. Have checked pump off of vehicle and it works fine. Ran diagnostics in manual and it leads me to a bad ECU. I have the ECU in hand and would like to troubleshoot it. I have checked for cold solder joints - broken lands and all is ok. Does anyone have any info on troubleshooting the ecu or anything else I can try??

 

No diag on the ECU itself. Do a search, some good info here.

 

thanks, I have searched and no help. I have since found a guy that has one that he will sell.

 

dont buy it till you check the combo switch (brake vacume and elec switch ) adjustment

 

check the vaccum diaphram on the top of the engine. did you check the the "t" connector with the vaccum lines? hope it helps. gotta love a rover. duboff