Hyundai: Engine D4FA. Manual - part 46

DIESEL CONTROL SYSTEM

FLA -55

INPUT THE NUM.
OF ALL CYL.
AT ONE TIME 

1. HYUND

1. HYUNDAI 

AI VEHICLE DIA

VEHICLE DIAGNOSIS 

GNOSIS 

VEHICLE N

VEHICLE NAME

AME

EGNG102A

CAUTION

1.

When "WRITING FAIL" is displayed ON
Hi-scan(Pro), input injector data (7digits) of
each cylinder into a new ECM again as prior
procedure.

LGJF502A

2.

If the glow lamp is flashed and DTC P1586
is detected ignition switch ON, take proper
steps refering to "P1586 DTC Troubleshoot-
ing procedure".

FLA -56

FUEL SYSTEM

ENGINE COOLANT
TEMPERATURE SENSOR (ECTS)

ENGINE COOLANT TEMPERATURE

SENSOR (ECTS)

ECD22F3A

The ECTS is located in the engine coolant passage. It
detects the coolant temperature and sends to the ECM.
It has a thermistor which is sensitive to change according
to the coolant temperature. The electric resistance of a
thermistor decreases in response to temperature rise.
The ECM uses this information to control the injection
quantity and fan operation.

ECTS

AFGF300F

SPECIFICATION

Temperature 

 (

)

-20 (-4)

0 (32)

20 (68)

40 (104)

60 (140)

80 (176)

100 (212)

110 (230)

120 (248)

14.13 ~16.83

5.79

2.31 ~ 2.59

1.15

0.59

0.32

0.19

0.15

0.17

Sensor Resistance (

)

Between Pin 1 and 3 (For ECTS)

Temperature 

 (

)

60 (140)

85 (185)

110 (230)

125 (257)

125

42.6 ~ 54.2

22.1 ~ 26.2

15.2

Sensor Resistance ( )

Between Pin 1 and 2 (For Gauge)

EFNF537A

CIRCUIT DIAGRAM

ECTS

ECM

ECTS signal

Ground

1

C101-1 (58)

C101-1 (41)

Cluster

3

2

C127

Harness side

3

2

1

EGNG109A

DIESEL CONTROL SYSTEM

FLA -57

SIGNAL WAVEFORM

ECTS signal should be smooth and continuous without any 
sudden changes.
As the engine warms up, ECTS signal will drop.

EFNF539A

COMPONENT INSPECTION

1.

Remove the ECTS from the engine coolant passage.

2.

With the temperature sensing portion of the ECTS
immersed in hot engine coolant, check the resis-
tance.(Refer to "SPECIFICATION")

EFNF541A

<Sensor connector>

1

2

3

LGJF500W

3.

If the resistance deviates from the standard value
greatly, replace the sensor.

FLA -58

FUEL SYSTEM

CAMSHAFT POSITION SENSOR
(CMPS)

CAMSHAFT POSITION SENSOR

(CMPS)

E7DC4BAB

CMPS detects the teeth target wheel and provides ECM
with the information on the current position of piston and
cylinder.
ECM uses this signal to determine the fuel injection timing
and ignition timing.

CMPS

AWJF300G

CIRCUIT DIAGRAM

CMPS

ECM

GROUND

CMPS signal

3

C101-1(20)

C101-1(50)

Main relay

2

1

C105

Harness side

3

2

1

EGNG110A

SIGNAL WAVWFORM

This illustration shows waveform of Crankshaft Position 
Sensor(CKPS) and Camshaft Position Sensor(CMPS)
simultaneously. The middle area indicates reference points of
CKPS and CMPS.

CMP reference point

CKP reference point

LGJF500Y