Winnebago 1987-1989 LeSharo Service Manual page 292

DIAGNOSTIC
XR25
CONNECTING THE XR25
The XR25 comes with all the electrical cables
necessary for each test. Each cable is identified on
page F2-17 with a letter designation.
Cable "T" is an extension cable and can be either
the round or ribbon variety. Cable "T" connects
the XR25 to either cable "V" or "W". Included
also are two alligator clips to connect to the
battery as a power source for the XR25 tester.
NOTE: If the power leads are reversed, the XR25
will not operate, but it will not be
damaged either. Each test schematic wi II
indicate proper connection.
IMPORTANT
As soon as power leads are properly connected,
the XR25 will perform internal circuit diagnosis.
Monitor each indication display in sequence,
followed by very brief tone. The display (5) will go
through a series of numbers (1111 thru 9999) then
finish with all zeros (0000).
Checking Connections and Input Circuits:
This check is necessary if internal circuit diagnosis
is correct but display indicates no reading.
• Connect the extension "T" to the XR25
• Connect cable "V" to extension "T"
• Connect the red terminal to battery
+
• Connect the black terminal to battery -
• Depress key "0", then key
*
• The display should indicate : COP
• Connect the yellow and green terminals to
vehicle ground. .
• Correct indication will be illumination of the
right side bar graphs.
1-2-3-4-5-6-7-8
Should one or more displays remain illuminated
on the left, the extension is cut or improperly
connected.
F2-18
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