WCM CTX8010C Operations & Parts Manual page 50

Possible causes
Start motor fault
6 (open circuit or short
circuit inside)
7 Alternator fault
Disconnected wire
harness (disconnect
8
from connector or
poor contact)
Poor GND of wire
9 harness (contact with
earth circuit)
Short circuit of wire
10 harness (contact with
24V circuit)
2. Engine flames out during operation
Symptom
Causes
Disconnected wire
harness (disconnect from
1
connector or poor
contact)
Poor GND of wire
2 harness (contact with
earth circuit)
Standard value in regular condition and reference value of fault diagnosis
Between 105 and
GND
★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.
Engine or start motor
PS; terminal B and
GND
Input of engine start,
terminal C and GND
★Turn the start switch of engine to OFF as preparation and keep it at OFF during
diagnosis.
★Turn the start switch of engine to OFF as preparation and keep it at OFF during
diagnosis.
★Turn the start switch of engine to OFF as preparation and keep it at OFF during
diagnosis.
★Turn the start switch of engine to OFF as preparation and keep it at OFF during
diagnosis.
●Engine flames out during operation
Standard value in regular condition and reference value of fault
diagnosis
★Turn the start switch of engine to OFF as preparation and keep it at
OFF during diagnosis.
Between CN-12T ② and CN-132F ⑥
★Turn the start switch of engine to OFF as preparation and keep it at
OFF during diagnosis.
Between CN-12T ② and CN-132F ⑥
Unlocked
Locked
Engine start switch
Start
Resistance
Resistance
Voltage
44
1MΩ
Below 1Ω
Voltage
20~30V
20~30V
Voltage
Below 1V
Below 1
Above 1M
Below 1V
Resistance Below 1
Resistance Above 1M