Hyundai HX145 LCR, Manual

Page: 410 / 702

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9. MALFUNCTION OF NEGATIVE 2 PRESSURE SENSOR 9. MALFUNCTION OF NEGATIVE 2 PRESSURE SENSOR
Fault code : HCESPN 124, FMI 0~4
Before carrying out below procedure, check all the related connectors are properly inserted.
INSPECTION PROCEDURE INSPECTION PROCEDURE
※
1) 1)
Wiring diagram Wiring diagram
CN-52
17
MCU
CN-51
3
13
CD-71
NEGATIVE 2 PRESSURE SENSOR
SUPPLY
SIG
RETURN
A
B
C
CN-1
4
6
2
300L6MS13
·
Cause Remedy
Defective MCU
Short circuit or
poor connection
between CN-52-
(17)-CN-1(2)
Detective N2
pressure sensor
Short circuit or
poor connection
between CN-1(2)-
CD-71(B)
Short circuit or
poor connection
between
CD-71(A)-CN-1(4)
or CD-71(C)-CN-
1(6)
Short circuit or
poor connection
between CN-1(4)-
CN-51(3) or CN-1
(6) - CN-51(13)
Replace
Replace or repair
Replace or repair
Replace or repair
Replace or repair
Replace or repair
Check voltage
between CN-52
(17) - GND
YES
YES
YES
NO
NO
NO
SPEC :
Starting switch ON :
24
±
2V
SPEC :
Starting switch ON :
24
±
2V
Check voltage
between
CN-1(4)-(6)
Check voltage
between
CN-1(2)-GND
Check voltage
between
CD-44(A)-(C)
YES
NO
SPEC :
Actuator operating: 1~5V
See TEST 13
SPEC :
Actuator operating: 1~5V