Briggs & Stratton VANGUARD 810 EFI Repair Manual page 19

Section 2: Troubleshooting DTCs
Step
1. Remove probe from terminal J2-02, and back
probe terminal J1-09 (Black wire) of ECM J1
(Grey) connector.
2. Connect terminal J1-09 back probe to red meter
test lead on DVOM.
4
3. Connect black meter test lead on DVOM to a
known good ground.
4. Observe reading on DVOM.
5. Is resistance 1.0 ohm or less?
Figure 2-3 Fuse/Relay Block.
1
10
Figure 2-4 ECM J2 Connector (Black).
Check ECM Power and Grounds
Scan and Non-Scan Diagnostics
Action
Ignition Fuse
J2-02 J2-15 J2-18
(Page 2 of 2)
1
9
18
10
Figure 2-5 ECM J1 Connector (Grey).
Yes
Look for open or short
System OK.
in ECM ground circuit.
15
No
9
18
J1-09