PC58UU-3 20-608-1
TROUBLESHOOTING
Serial No.: 22001 and up
M-8 Related electrical circuit diagram
Cause Remedy
• Start engine.
• Measure voltage between
alternator terminal L and chas-
sis ground.
• 13.5 – 14.5 V
1
Is voltage at alternator terminal L nor-
mal?
NO
YES
Defective generation by alter-
nator
Replace
2
Contact with chassis ground
in wiring harness between
F27 (female) – alternator
terminal L
Defective monitor panel
• Start engine.
• 13.5 – 14.5 V
Is voltage between F27 (female) (10)
and (3), (4) normal?
NO
Repair or
replace wiring
harness
YES
Replace
M-8
(6)
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