- Confirmed the customer's complaint and found the engine did not start. Performed an inspection of the ignition system and found no faults. Connected an inline spark tester to a spark plug, cranked the engine and found the lamp illuminated brightly. Inspected the air intake system and detected no obvious faults. Connected a smoke machine to the engine intake manifold, induced smoke into the system and found no leaks. Connected a fuel pressure gauge to the fuel pump outlet, cranked the engine and found the fuel pressure was not present. Removed the fuel pump from fuel tank, visually inspected the fuel pump and found the fuel pump testing good. Removed and test fuel pump on the engine bay. Fuel pump on engine bay also tested good. Connected a battery charger to the battery and charged the battery. Used a battery conductance tester to test the battery, and found that the battery was able to conduct the specified amount of current, which verified that it was good. Connected a scan tool, attempted to retrieve diagnostic trouble codes and found the powertrain control module did not communicate. Performed an inspection of the powertrain control module wiring harness and connector and detected no obvious faults. Disconnected the powertrain control module connector, inspected the connector and connector terminals and found no faults. With the ignition on and the engine off, used a multi-meter to check for the presence of voltage and ground at the powertrain control module connector and found both were present. Using the multi-meter, measured the resistance of the powertrain control module communication circuits and found the resistance was within the specified range. The results of these tests verified the powertrain control module was faulty.
- REMOVE ALL NECESSARY COMPONENTS. REMOVE AND REPLACE ENGINE CONTROL MODULE. ASSEMBLE TOGETHER AND MAKE ALL NECESSARY ADJUSTMENTS. TEST ALL AFFECTED AREAS.
- COMPUTER PROGRAMMING
DELFINO G. gave our service a 5 star review on 9/17/2022