Advanced Diagnostics

DTC P0627: Fuel Pump Control Module System Malfunction (Engine Type: J35A8)




General Description
The fuel pump control module system monitors the voltage applied to the fuel pump in response to the duty signal from the engine control module (ECM)/powertrain control module (PCM). When the voltage applied to the fuel pump is normal, the fuel pump control module system outputs a high diagnosis signal, and when the voltage applied is abnormal, it outputs a low signal. The ECM/PCM monitors this diagnosis signal whenever the engine is running.

When the diagnosis signal from the fuel pump control module system is low for a set time or more, the ECM/PCM detects a malfunction and a DTC is stored.




Monitor Execution, Sequence, Duration, DTC Type, OBD Status




Enable Conditions

Malfunction Threshold
The diagnosis signal is low for at least 2 seconds.

Diagnosis Details

Conditions for illuminating the MIL
When a malfunction is detected, the MIL comes on and the DTC and the freeze frame data are stored in the ECM/PCM memory.

Conditions for clearing the MIL
The MIL will be cleared if the malfunction does not recur during three consecutive trips in which the diagnostic runs.

The MIL, the DTC, and the freeze frame data can be cleared by using the scan tool Clear command or by disconnecting the battery.