No they're coded.
Get someone capable to check the power and grounds on the ECU.
If there's a fault in the wiring then the ECU won't power up.
So there'd be no communication with any diagnostic device.
On a brighter note the engine management light is controlled by the ECU so it's clearly part working.
Get the three letter from the vin number and I'll post which terminal to test,
Your looking for RHS OR RHY RHZ.
Posted on Wednesday 27th of September 2017Don't understand this? Ask a question