Question

An electronically-controlled diesel engine will not start. Any of these could be the cause EXCEPT a failed:

(A) camshaft position sensor.
(B) engine control module (ECM). (C) ECM ground circuit.
(D) throttle position sensor (TPS).

Answer 1

The most likely cause of an electronically-controlled diesel engine not starting would be a failed Engine Control Module (ECM).

Step-by-step explanation:

The most likely cause of an electronically-controlled diesel engine not starting would be a failed Engine Control Module (ECM). The ECM is responsible for controlling and coordinating various engine functions, including fuel injection and ignition timing. If the ECM is not functioning properly, it can prevent the engine from starting.

The other options listed - a failed camshaft position sensor, ECM ground circuit, and throttle position sensor - can also cause issues with the engine but would typically result in poor performance or other symptoms rather than a complete failure to start.

Therefore, the correct answer is (B) engine control module (ECM).