Hyundai i-30: Engine Control System / Injector
Description and operation
The GDI injector is similar to a standard injector, but sprays fuel at a much
higher pressure directly into the combustion chamber and has a swirl disc to
get the fuel swirling as it exits the nozzle. This aids in atomization of the
fuel.
The ECM controls both the feed circuits (high side) to feed voltage to the injectors
and the ground circuits (low side) to energize the injectors. Also, the feed
for 2 injectors comes from the same driver set. As the ignition coils are paired
with cylinders (1-4 and 2-3), the injectors are also set up in pairs.
Specifications
Item
|
Specification
|
Coil Resistance (Ω)
|
1.19 - 1.31 [20°C (68°F)]
|
Schematic diagrams
Harness Connector
Repair procedures
|
1. |
Turn the ignition switch OFF.
|
|
2. |
Disconnect the injector connector.
|
|
3. |
Measure resistance between the injector terminals 1 and 2.
|
|
4. |
Check that the resistance is within the specification.
|
Specification : Refer to "Specification"
|
|
| •
|
In case of removing the high pressure fuel pump, high pressure
fuel pipe, delivery pipe, and injector, there may be injury
caused by leakage of the high pressure fuel. So don’t do any
repair work right after engine stops.
|
|
|
1. |
Turn the ignition switch OFF and disconnect the battery negative (-)
cable.
|
|
2. |
Release the residual pressure in fuel line.
(Refer to Fuel Delivery System - "Release Residual Pressure in Fuel
Line")
|
• |
When removing the fuel pump relay, a Diagnostic Trouble
Code (DTC) may occur. Delete the code with the diagnostic
tool after completion of "Release Residual Pressure
in Fuel Line" work.
|
|
|
|
3. |
Remove the delivery pipe & injector assembly.
(Refer to Fuel Delivery System - "Delivery Pipe")
|
|
4. |
Disconnect the wiring connector and then separate the injector (A) from
the delivery pipe (B).
|
|
1. |
Install in the reverse order of removal.
|
• |
Do not reuse the used bolt.
|
|
• |
Do not reuse the used injector fixing clip.
|
|
• |
Do not reuse the high pressure fuel pipe.
|
|
• |
Do not reuse the combustion seal (A).
|
|
• |
Be careful not to apply oil to combustion seal.
|
|
• |
Do not reuse the O-ring (A), support disk (B), rubber
washer (C).
|
|
• |
When replacing the rubber washer, the steal plate part
should be faced the cylinder installation part and the
rubber plate part should be faced the injector body
part.
|
|
• |
Apply the engine oil to the injector O-ring.
|
|
• |
When inserting the injector, be careful not to damage
the injector tip.
|
|
|
| •
|
In order to prevent from oil leak, replacement of combustion
seal should follow the below procedure.
|
|
|
1. |
Remove the combustion seal (A).
|
• |
Be careful not to damage the injector while remove the
combustion seal.
|
|
• |
Remove the combustion seal using a nipper.
|
|
|
|
2. |
Before the assembly of the sealing ring the groove must be cleaned using
a clean cloth.
|
|
3. |
Install the combustion seal using a special service tool (SST No. :
09353-L1100).
|
(1) |
Place the seal installing guide (A) (SST No.: 09353-2B000) on
the tip of the injector not to damage the injector tip (B).
|
|
(2) |
Install the combustion seal (A) to the seal installing guide.
|
|
(3) |
Input the seal to A direction of the installer, and push it
to B direction until it reaches the combustion seal installation
area.
|
• |
The complete assembly must not take longer than
2 to 3 seconds.
|
|
|
|
(4) |
Install the compressor (A) and disconnect it after rotating
3-4 times to left and right direction.
|
|
(5) |
Check the combustion seal (A) installation.
|
|
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Other information:
Repair procedures
Replacement
•
Put on gloves to prevent hand injuries.
•
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Categories
Seat belt warning
Driver’s seat belt warning
■ Instrument cluster
As a reminder to the driver, the seat
belt warning light will illuminate for
approximately 6 seconds each time
you turn the ignition switch ON
regardless of belt fastening.
read more
Oil Pressure & Oil Temperature Sensor (OPTS)
Differential Pressure Sensor (DPS)