Hyundai HX140L, Manual

Page: 495 / 819

6-47
5. MALFUNCTION OF PUMP 1 PRESSURE SENSOR (SERIAL NO. : -#0610)
Fault code : HCESPN 120, FMI 0~4
Before carrying out below procedure, check all the related connectors are properly inserted.
INSPECTION PROCEDURE
侍
1)
Wiring diagram
CN-52
29
MCU
CN-51
3
13
CD-42
PUMP 1 PRESSURE SENSOR
SUPPLY
SIG
RETURN
A
B
C
CN-1
4
6
5
300L6MS05
余
Cause Remedy
Defective MCU
Short circuit or
poor connection
between CN-52-
(29)-CN-1(5)
Detective P1
pressure sensor
Short circuit or
poor connection
between CN-1(5)-
CD-42(B)
Short circuit or
poor connection
between
CD-42(A)-CN-1(4)
or CD-42(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
(29) - GND
YES
YES
YES
NO
NO
NO
SPEC :
Starting switch ON :
24
佳
2V
SPEC :
Starting switch ON :
24
佳
2V
Check voltage
between
CN-1(4)-(6)
Check voltage
between
CN-1(5)-GND
Check voltage
between
CD-42(A)-(C)
YES
NO
SPEC :
Actuator operating: 1~5V
See TEST 9
SPEC :
Actuator operating: 1~5V