Kia Carnival (2009+). Instruction — part 255

COMPONENT INSPECTION

1. Check signal waveform of CMPS and CKPS using a scantool.

Specification : Refer to "WAVE FORM"

Fuel System

Engine Control System - Injector

Fuel System

2009 > G 2.7 DOHC >

INSPECTION

FUNCTION AND OPERATION PRICIPLE

Based on information from various sensors, the PCM measures the fuel injection amount. The fuel injector is a
solenoid-operated valve and the fuel injection amount is controlled by length of time that the fuel injector is held open.
The PCM controls each injector by grounding the control circuit. When the PCM energizes the injector by grounding
the control circuit, the circuit voltage should be low (theoretically 0V) and the fuel is injected. When the PCM de-
energizes the injector by opening control circuit, the fuel injector is closed and circuit voltage should momentarily peak.

If an injector connector is disconnected for more than 46 seconds while the engine runs, the PCM will determine
that the cylinder is misfiring and cut fuel supply. So be careful not to exceed 46 seconds. But the engine runs
normally in 10 seconds after turning the ignition key off.

SPECIFICATION

Item

Specification

Coil Resistance (!)

13.8 ~ 15.2! at 20°C (68°F)

CIRCUIT DIAGRAM

COMPONENT INSPECTION

1. Turn ignition switch OFF.

2. Disconnect injector connector.

3. Measure resistance between injector terminals 1 and 2.