Briggs & Stratton 040298, Service & Troubleshooting Manual

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2
2
Cranking Problems
TEST 7 - Check Battery Components
1. Check the condition and electrical integrity of the
battery and all wires, connectors, and cables
throughout the unit. Some areas for particular focus
are:
• Battery state of charge
• Battery connections
• Generator grounds, wiring, and connections
• Starter contactor
2. Inspect the 15 Amp fuse. Replace if necessary.
If the fuse is replaced, reset the fault code detection system.
See
Resetting the Fault Code Detection System.
3. Remove the screws to gain access to the control
panel board. See How to Access control panel Board.
4. Make sure all the wires and connections are securely
attached to the back of the control panel board
(Figure 28).
Figure 28
5. Check the unit grounding cable and connections.
6. If electrical components are OK, proceed to
TEST 8 -
Check Starter Contactor Signal.
TEST 8 - Check Starter Contactor Signal
1. Set control panel system switch to OFF .
2. Reset the fault code detection system. See Resetting
the Fault Code Detection System .
3. Gain access to the starter contactor located near the
battery.
4. Connect the positive ( + ) test lead of the meter to Wire
#56 at the contactor terminal ( A , Figure 29). Connect
the negative ( - ) test lead of the meter to ground.
Figure 29
5. Set the control panel system switch to AUTO and
push MANUAL OVER-RIDE to start unit.
6. While the engine start cycle is in progress, the
voltage reading should be above 9.6VDC.
Remember that the control panel only delivers 12VDC to the
starter contactor for 10-15 seconds then pauses.
• If voltage is present, but the starter won’t engage,
proceed to TEST 10 - Check Starter.
• If no voltage is present, proceed to TEST 9 -
Check control panel Board Output.
TEST 9 - Check Control Panel Board Output
1. During the crank cycle, measure the DC voltage
between Pin #3, Wire #56, and ground at Pin #2,
Wire #0 (
A , Figure 30).
Figure 30
• If no voltage is measured at the control panel
board, replace the control panel.
• Reset the exercise timer. See Resetting the
Exercise Timer.
Not
for
Reproduction