General Information

Engine Control
P020C Cylinder 3 Injector Timing (Injector Input Line Circuit Error) - General Information

Component Location





General Description

Injectors jet out high pressure fuel caculated by PCM 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 PCM, 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 or short in injector #3 control circuit (PCM ~ IDB), PCM sets DTC P020C.

DTC Detecting Condition





Diagnostic Circuit Diagram





Signal Waveform & Data




Fig.1) Normal waveform of injector control circuit at idle.