Hi
I am needing some advice from someone who knows the electronic workings of the Rover ECU's - 14CU
My car is a 1990 Plus 4 however the M16 engine will be an '89 model. Apparently the 14CU unit was only used for that one year (the unit is mounted near the glove box under the dash) and there is a separate Ignition Control Unit which is mounted on the firewall in the engine bay. This motor has no catalysts fitted and is just 1 year prior to the fitting of the OBD diagnostic plugs.
All the information I can access on the internet deals mostly with the 14CUX ECU's and all as fitted to the V8 models. not the Plus 4's.
Questions?
1. Can I test with a multimeter whether the ECU is working correctly?
2. Would it be possible to exchange a 14CUX ECU (maybe from an early Range Rover/Discovery) for the 14CU unit or are they totally incompatible? I'm assuming the programming will be different being from a V8?
3. If incompatible, can units/chips be sourced that will work for the 4 cylinder Rovers ECU's?
4. The wiring diagram shows a diagnostic socket (and I have found this near the coil in the engine bay). It is a 3 pin horizontal plastic socket. I'm assuming Rover dealers from the era must have had something to plug into this and get some sort of feedback from the ECU. Has anyone had experience with using this?
It would be great if someone can help. Have fuel, spark and compression but something not talking to something else and can't get the engine to start!! Frustrating!!
Thanks.
Col.
