ELECTRICAL
6-12 Z580/Z593/Z595 Diesel Service Manual
6
Temperature Sender
How It Works
Testing
Purpose
Location
A continuous tone will sound when the engine tempera-
ture switch connects to ground as the engine reaches a
certain temperature (Fig. 668).
The temperature sender is a temperature-dependent
variable resistor. As the coolant temperature increases,
the internal resistance decreases. This causes a change
in voltage applied to the water temperature gauge, which
indicates a higher temperature.
Fig 668 CLR DSC-2538
The temperature sender is located on the top of the
engine block on the front end of the engine (Fig. 669).
Connect a positive lead from a 12 volt battery to the
+ terminal on the back of the audible alarm. Connect
the negative lead to the S terminal on the back of the
audible alarm. The alarm should emit a continuous tone.
Fig 669 PICT-4163
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