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Guardian Technologies 4582 & 4987 Manual De Usuario

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RESULTS:
1. If continuity or zero was measured in Step 3 or Step 4 replace
the FSS.
2. (Units without Hourmeter) If correct resistance was measured
refer to flow chart, repair or replace Wire 14 between the FSS
and Resistor (R1).
3. (Units with Hourmeter) Refer back to flow chart.
TEST 48 - CHECk HOURMETER
PROCEDURE:
1. Disconnect Wire  14  from  the  hourmeter.  Install  new  10  Amp
fuse. Set Start Run Stop Switch (SW1) to start.
2. Check to see if fuse blew open.
RESULTS:
1. If fuse did not blow open replace the hour meter.
2. If fuse still blew repair or replace Wire 14 between the Resistor
(R1) and the Hour Meter (HM) or between the HM and the Fuel
Shutoff Solenoid (FSS).
TEST 49 - CHECk WIRE 15b
PROCEDURE:
1. Set a voltmeter to measure resistance.
2. Disconnect Wire  15B  from  the  Start  Stop  Relay  (SSR)  (see
Figure 6-56) . Connect one meter test lead to Wire 15B previ-
ously  removed.  Connect  the  other  meter  test  lead  to  frame
ground. Approximately 20K ohms should be measured.
3. If  continuity  or  zero  resistance  was  measured  remove  the  J2
connector from the printed circuit board and repeat Step 2.
20 kohm
SSR
15B
14
13
9
10
12
5
1
2
6
4
8
229
0
18
14
15
15
15
Figure 6-56. – Check Wire 15B
RESULTS:
1. If continuity was measured in Step 2 but not in Step 3, replace
the printed circuit board.
2. If  continuity  was  measured  in  Step  3, Wire  15B  is  shorted
to  ground,  repair  or  replace Wire  15B  between  the  SSR  and
printed circuit board.
TEST 50 - CHECk WIRE 167
PROCEDURE:
1. Set a voltmeter to measure resistance.
2. Disconnect Wire  167  from  the  Start-Run-Stop  Switch  (SW1).
Connect one meter test lead to Wire 167 previously removed.
Connect the other meter test lead to frame ground. See Figure
6-57. INFINITY should be measured.
3. If  continuity  or  zero  resistance  was  measured  remove  the  J2
connector from the printed circuit board and repeat Step 2.
167
(START)
0
15
15
17
4
5
6
1
2
3
RUN
STOP
0
OL
Figure 6-57. Check Wire 167
RESULTS:
1. If continuity was measured in Step 2 but not in Step 3, replace
the printed circuit board.
2. If  continuity  was  measured  in  Step  3  wire  167  is  shorted  to
ground,  repair  or  replace Wire  167  between  the  SW1  and
printed circuit board.
TEST 51 - CHECk WIRES 11S & 44S
PROCEDURE:
1. Set a voltmeter to measure resistance.
2. Disconnect  the  J2  connector  from  the  printed  circuit  board.
section 6
Diagnostic tests
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