TROUBLESHOOTING
M-8
M-8 Preheating is not being used but preheating display lights up
* Before carrying out troubleshooting, check that all the related connectors are properly inserted.
* Always connect any disconnected connectors before going on to the next step.
2YEs
Defective monitor panel
yEs Is voltage between
1
- PO1 (8) and chassis -
_ ground normal?
Contact of 24V wiring
Is voltage between
harness with wiring harness
wiring of starting
s between starting switch
switch terminal Rl - l Ov
NO
terminal Rl - HO3 (21, or
and chassis ground
l TurTurctaarti.“g
between PO1 (8) - HO3 (2) -
normal?
El1 (male) (1)
l ov
Defective starting switch
* Turn starting
NO
(contact between terminal 8
switch ON.
and terminal Rl)
l Disconnect
terminal Rl.
M-8 Related electric circuit diagram
HO3
Starting switch M 1 ( M4 )
Ell(X2)
t24v
f
Monitor panel
r relay
:-i
Electrical intake
air heater
Remedy
Replace
Repair or
replace
Replace
rfT XOSDD188
20-250
a
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