Quote:
Originally Posted by F30ed
The Pump is not just a motor with 2 wires. It has controller and connected over BSD network to DME. If DME detects any electrical malfunction than error code recorded. It can not detect mechanical problem though. If pump stops pumping due to mechanical problem, ECU will never know that.
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Except it will by means of water temp sensors located on the engine and the radiator. If there is no coolant flow water temp sensors will show this. The fault stored will be for the coolant pump mechanically blocked.