NUOMAN NM-E10 MINI - Page 57

Shandong Nuoman Engineering Machinery Co.,Ltd
Business Room, No. 7, Zhongshan West Road, Gulou Street Office, Yanzhou Dist., Jining, Shandong, CN
TEL/Fax:+8618266821667 Whatsapp/Wechat:+8618266821667
Possible causes
Standard value in regular condition and reference value of fault diagnosis
Between 105 and
Unlocked
1MΩ
GND
Locked
Below 1Ω
★Turn the start switch of engine to OFF as preparation and keep it at OFF during
diagnosis. If all PS, GND, signals and engine start input are correct while engine
start output is abnormal, the engine starter relay fails.
Start motor fault
Engine or start motor
Engine start switch
Voltage
6
(open circuit or short
PS; terminal B and
circuit inside)
20~30V
GND
Start
Input of engine start,
20~30V
terminal C and GND
★Turn the start switch of engine to OFF as preparation and keep it at OFF during
7
Alternator fault
diagnosis.
Voltage
Below 1V
★Turn the start switch of engine to OFF as preparation and keep it at OFF during
Disconnected wire
diagnosis.
8
harness (disconnect
from connector or
Resistance
Below 1
poor contact)
★Turn the start switch of engine to OFF as preparation and keep it at OFF during
Poor GND of wire
diagnosis.
9
harness (contact with
earth circuit)
Resistance
Above 1M
Short circuit of wire
★Turn the start switch of engine to OFF as preparation and keep it at OFF during
10
harness (contact with
diagnosis.
24V circuit)
Voltage
Below 1V
2. Engine flames out during operation
Symptom
●Engine flames out during operation
Causes
Standard value in regular condition and reference value of fault
diagnosis
Disconnected wire
★Turn the start switch of engine to OFF as preparation and keep it at
1
harness (disconnect from
OFF during diagnosis.
connector or poor
Between CN-12T ② and CN-132F ⑥
Resistance
Below 1
contact)
Poor GND of wire
★Turn the start switch of engine to OFF as preparation and keep it at
OFF during diagnosis.
2
harness (contact with
earth circuit)
Between CN-12T ② and CN-132F ⑥
Resistance
Above 1M
44