DTC Advanced Diagnostics: P2623: General Description
The high pressure fuel pump adjusts the pressure of the fuel rail internal combustion and is controlled by the powertrain control module (PCM) ON/OFF command. The injector driver IC controls the high pressure fuel pump driver circuit according to the drive commands output from the microcomputer (MCU) and drives the high pressure fuel pump. The injector driver IC monitors injector currents and terminal voltage of the PCM and transmits results to the MCU. If the monitored conditions are abnormal for a specified time, the PCM detects a malfunction and stores a DTC.
Monitor Execution, Sequence, Duration, DTC Type
| Execution | Continuous |
| Sequence | None |
| Duration | 0.5 second or more |
| DTC Type | One drive cycle, MIL on |