When a EST fails to validate a handshake with a module what is the first step the technician should perform?

A. Check the functionality of the EST and the connection cables.
B. Reboot the PCM and attempt the handshake again.
C. Start a databus diagnostic routine.
D. Remove the module and diagnose.


Answer: A

Trades & Technology

You might also like to view...

Destructive tests ensure that the welding process has been performed properly, that the joint design was correct, and that the proper filler metal was selected.

Answer the following statement true (T) or false (F)

Trades & Technology

After installing a crankshaft, what is the measurement taken with a dial indicator mounted on one end of the crankshaft and gently prying the crankshaft to the front and rear of the engine?

What will be an ideal response?

Trades & Technology

Proper care of shop equipment includes _________

A) Tuning up every 6 months B) Keeping equipment clean C) Keeping equipment lubricated D) Both B and C

Trades & Technology

A circuit that has infinite resistance is said to be a/an __________ circuit.

A. open B. short C. closed D. shunt

Trades & Technology