Error Code [24] (Trouble In Engine Speed Sensor System) Is Displayed - Komatsu PC58UU-3 Shop Manual

TROUBLESHOOTING
E-1 Error code [24] (Trouble in engine speed sensor system) is displayed
• Turn starting switch OFF.
• Disconnect M9.
• 2,100 – 2,500 z
• Turn starting switch OFF.
• Disconnect G2.
• 2,100 – 2,500 z
E-1 Related electrical circuit diagram
20-316
(6)
Is resistance between M9 (male) (1) –
(2) normal?
YES
Is resistance between G2 (female) (39)
– (40) normal?
YES
Cause
1
Defective engine speed sen-
NO
sor (Internal disconnection,
defective contact, short cir-
cuit with chassis ground)
Disconnection, defective con-
2
tact, or short circuit with
chassis ground in wiring har-
NO
ness between G2 (female)
(40) – M9 (female) (2) or
between G2 (female) (39) –
M9 (female) (1)
Defective controller
E-1
Remedy
Replace
Repair or
replace
Replace
PC58UU-3