11
Test Procedures
TROUBLESHOOTING AND ELECTRICAL SYSTEM
1.4. Set the multimeter to 20 VDC.
1.5. Place the probes to measure the voltage between the end of the red wire (w122) and the frame ground
1.6. Monitor the multimeter. The reading should indicate 0 volts with the key in the OFF position. The reading
should indicate approximately 12 VDC when the key is in the ON and START positions; if the multimeter
does indicate 12 VDC, proceed to step 2. If the reading does not indicate approximately 12VDC with the
key in the ON and START positions, check the following items:
– Key switch (starter circuit).
See Test Procedure 4 – Key Switch (Starter Circuit) on page 11-17.
– Diode 2, 3 and 4.
See Test Procedure 7 – Wire Harness Diodes on page 11-21.
2.
Check the carburetor solenoid coil.
2.1. Disconnect battery and spark plug wire(s).
See Disconnecting the Battery – Gasoline Vehicles on
2.2. Set the multimeter to 200 ohms.
2.3. Measure the resistance between the wire lead of the carburetor solenoid and the engine (ground)
. The resistance should be approximately 35 ohms.
2.4. If the resistance reading is incorrect, replace the carburetor solenoid.
See the Briggs & Stratton Vanguard
engine manual (CC P/N 103568101).
W
A
R
N
IN
G
W
A
R
N
IN
G
1145
Figure 11-44
Check for Voltage Between Harness and
Ground
1146
Figure 11-45
Measure Resistance of Carburetor Solenoid
Coil
TEST PROCEDURE 17 – Low Oil Warning Light Circuit
See General Warning on page 1-2.
If the low oil warning light stays on, test the oil pressure switch.
See the Briggs & Stratton Vanguard engine
manual (CC P/N 103568101).
If the low oil warning light does not illuminate and the vehicle is low on oil, proceed
to step 1.
See following NOTE.
NOTE:
The low oil warning light should illuminate when the key switch is turned to the ON position. After the engine
has been started, the low oil warning light should remain illuminated until the oil pressure switch has been
activated.
1.
Disable the vehicle.
See Disabling the Vehicle on page 1-3.
2.
Raise the hood and remove the access panel.
3.
Ensure that the wires on the oil warning light are connected correctly and are tight. If they are not, rewire
or tighten as necessary.
4.
Disconnect the 18-gauge blue/white wire (w41) from the low oil warning light terminal.
5.
Leave the 18-gauge purple wire (w40) connected to the low oil warning light.
Page 11-32
2009-2012 XRT 950 Maintenance and Service Manual