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