5.11.7
Checking Electrical System
1.
Push the SELECT button (C) on the ground speed
lever (GSL) or the SELECT button (B) on the cab
display module (CDM) until the CDM display (A)
displays VOLTS. The display indicates the condition of
the battery and alternator. Refer to Table
and Alternator Condition, page 340
Figure 5.33: M155/M205 Cab Display
Module (CDM)
Figure 5.34: M105 Cab Display Module (CDM)
Table 5.4 Battery and Alternator Condition
Ignition
Engine
Reading
Indicated Condition
13.8–15.0
Normal
>16.0 (see note)
Regulator out of adjustment
Running
<12.5 (see note)
Alternator not working
or
Regulator out of adjustment
ON
Shut down
12.0
Battery normal
NOTE:
Display flashes voltage reading accompanied by a single loud tone every 30 minutes until condition is fixed.
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340
Revision A