DTC U016C: Lost Communication With Fuel Pump Control Module B

U016C - LOST COMMUNICATION WITH FUEL PUMP CONTROL MODULE B

Description: The PCM monitors the fuel pump monitor 2 (FPM2) circuit for the presence of a duty cycled signal. If the FPM2 circuit is fixed at a low or high voltage, the PCM begins to increment a counter. The test fails when the PCM is still not detecting a duty cycled signal on the FPM2 circuit after a calibrated amount of time.
Possible Causes: FPM2 circuit open or short to ground FPM2 circuit short to voltage VPWR fuel circuit open GND circuit open Damaged fuel pump control module relay
Diagnostic Aids:
Application	Key On Engine Off	Key On Engine Running	Continuous Memory
All	GO to PINPOINT TEST KC .