Problem: When trying to start the engine,
the starter momentarily engaged then stopped.
Details: The tech found that, while
attempting to crank/start the engine, the starter solenoid was
only powered for a split second. He connected a scan tool and
retrieved an A0C1 (Output Terminal 50) diagnostic trouble code.
The ALLDATA Tech-Assist consultant suggested he open the Car
Access System (CAS) module to inspect for signs of burned spots
on the circuit board.
Confirmed Repair: When the tech opened the
CAS module, he found several burned circuits. He replaced the CAS
module. After the repair, the engine started and ran normally.