General Information

Engine Control
P0201 Injector Circuit/Open-Cylinder 1 - General Information

Component Location





General Description

Injectors jet out high pressure fuel caculated by ECM to each cyliders. Direct and separated injections improve fuel efficiency and engine power.
The IDB(injector driver box) controls injector operation. If the IDB receives signal for injector operation from ECM, IDB boosts the voltage and uses current by voltage difference between HIGH and LOW side of injector circuit as injector operating current.

DTC Description

If there is Open in injector #1circuit (IDB ~ injector #1), ECM sets DTC P0201.

DTC Detecting Condition





Specification





Diagnostic Circuit Diagram





Signal Waveform & Data




Fig.1) Normal waveform of Injector High/Low side line at idle.