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
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