Hyundai HX140L, Manual

Page: 531 / 819

6-69-14
8. MALFUNCTION OF NEGATIVE 1 PRESSURE SENSOR (SERIAL NO. : #0611-)
Fault code : HCESPN 123, FMI 0~4
Before carrying out below procedure, check all the related connectors are properly inserted.
INSPECTION PROCEDURE
侍
1)
Wiring diagram
22
UNITED MCU
NEGATIVE 1 PRESSURE SENSOR
CN-51
32
31
CD-70
SUPPLY
SIG
RETURN
A
B
C
CN-1
4
6
1
140L6MS111
余
Cause Remedy
Defective united
MCU
Short circuit or
poor connection
between CN-51-
(22)-CN-1 (1)
Detective N1
pressure sensor
Short circuit or
poor connection
between CN-1 (1)-
CD-70 (B)
Short circuit or
poor connection
between
CD-70 (A)-CN-1
(4) or CD-70 (C)-
CN-1 (6)
Short circuit or
poor connection
between CN-1 (4)-
CN-51 (32) or
CN-1 (6) - CN-51
(31)
Replace
Replace or repair
Replace or repair
Replace or repair
Replace or repair
Replace or repair
Check voltage
between CN-51
(22) - GND
YES
YES
YES
NO
NO
NO
SPEC : 24
佳
2V
Starting switch ON
SPEC : 24
佳
2V
Starting switch ON
Check voltage
between
CN-1 (4)-(6)
Check voltage
between
CN-1 (1)-GND
Check voltage
between
CD-70 (A)-(C)
YES
NO
SPEC : 1~5V
Actuator operating
See TEST 12
SPEC : 1~5V
Actuator operating