I have a 1.5jz running a standalone ECU for the engine and i opted to keep the stock ECU to retain my factory features(such as Coolant temp on the cluster, Air conditioning etc)
The car runs and drives amazing, just need to get these 2 last things sorted out......
So i have wired up both the A/C stuff and Engine coolant temp sensor, even went out of my way to weld a bung to the JZ water-neck to hide it and make it look nice... but the cluster isn't moving and the air conditioning isn't working.
I can lock the Air conditioning compressor by jumping the relay and the AC blows cold(so i know my wiring is good, i also put a can of R134 in the system to get the system at least started, i also checked all my wiring with a multimeter so i know its good). It seems as though the stock ECU (specifically the multiplex, BEANS language) is NOT communicating with the cluster(in this case the coolant temp) or the air conditioning controls...
Is there any wiring that i'm missing for the multiplex to work?
As of right now my E3 and E4 connectors are plugged into the stock ECU(completely untouched), my A/C Clutch lock sensor(E34 on plug E7) is wired into the ECU, and engine coolant temp is wired (to C24 on plug E5, one wire for the temp sensor is ground and one side goes to the ECU, correct?) & my airbags controller/unit is gone(not sure if this messes with the multiplex?)
Everything else on my cluster works(tach signal, speedo & even fuel gauge so im confident the cluster is plugged in all the way)
i dont know why it's not working, any help would be greatly appreciated.
I'm assuming something with the multiplex is messed up since neither the engine coolant temp works or the AC wants to work on its own...
Do i need to wire in any crankshaft or cam shaft sensors to the stock ECU to alert the Stock ECU that the engine is running? i can't find any information on this
(attached is the diagram i'm referencing in case anyone needs to reference what i'm referring too)
The car runs and drives amazing, just need to get these 2 last things sorted out......
So i have wired up both the A/C stuff and Engine coolant temp sensor, even went out of my way to weld a bung to the JZ water-neck to hide it and make it look nice... but the cluster isn't moving and the air conditioning isn't working.
I can lock the Air conditioning compressor by jumping the relay and the AC blows cold(so i know my wiring is good, i also put a can of R134 in the system to get the system at least started, i also checked all my wiring with a multimeter so i know its good). It seems as though the stock ECU (specifically the multiplex, BEANS language) is NOT communicating with the cluster(in this case the coolant temp) or the air conditioning controls...
Is there any wiring that i'm missing for the multiplex to work?
As of right now my E3 and E4 connectors are plugged into the stock ECU(completely untouched), my A/C Clutch lock sensor(E34 on plug E7) is wired into the ECU, and engine coolant temp is wired (to C24 on plug E5, one wire for the temp sensor is ground and one side goes to the ECU, correct?) & my airbags controller/unit is gone(not sure if this messes with the multiplex?)
Everything else on my cluster works(tach signal, speedo & even fuel gauge so im confident the cluster is plugged in all the way)
i dont know why it's not working, any help would be greatly appreciated.
I'm assuming something with the multiplex is messed up since neither the engine coolant temp works or the AC wants to work on its own...
Do i need to wire in any crankshaft or cam shaft sensors to the stock ECU to alert the Stock ECU that the engine is running? i can't find any information on this
(attached is the diagram i'm referencing in case anyone needs to reference what i'm referring too)