General Information

Engine

Engine Control - P0626 Generator Field/F Terminal Circuit High - General Information

Component Location





General Description

Alternator output and power demand of all electrical loads and systems must be matched to each other as ideally as possible so that the entire system is reliable and trouble-free in operation. The ECM monitors alternator output deviation from the signal of the FR terminal of the alternator when the engine is running

DTC Description

ECM sets DTC P0626 if the ECM detects output duty signal higher than the possible range of a properly operating alternator

DTC Detecting Condition





Schematic Diagram





Signal Waveform & Data








Signal waveform at alternator #3 terminal
Fig 1) Normal waveform with ignition "ON"
Fig 2) All electrical load "OFF" with idle
Fig 3) A/C, Rear defrost, Head lamp "ON" with idle