Briggs & Stratton VANGUARD 810 EFI Repair Manual page 63

Section 2: Troubleshooting DTCs
Step
1. Disconnect and reconnect cylinder 2 ignition coil and
ECM J1 (Grey) connectors.
1 2. Turn Ignition ON, Engine OFF. Clear codes.
3. Turn Ignition OFF, and then back ON.
4. Does DTC return?
1. Turn Ignition OFF.
2. Disconnect ignition coil connector.
2
3. Install Briggs & Stratton Noid Light (Part No. 19623).
4. Observe Noid Light while cranking engine.
5. Does Noid Light fl ash (but very dimly)?
1. Turn Ignition OFF.
2. Back probe (using fused patch cord) terminal A (Yel-
low wire) of ignition coil connector.
3. Connect terminal A back probe to red meter test
lead on DVOM.
3
4. Connect black meter test lead on DVOM to a known
good ground.
5. Set DVOM to read volts DC.
6. Turn Ignition ON, Engine OFF.
7. Does DVOM read 12.2-13.5 volts DC?
1. Turn Ignition OFF.
2. Remove probe from terminal A, and back probe ter-
minal B (Violet/White wire) of ignition coil connector.
3. Connect terminal B back probe to red meter test
lead on DVOM.
4. Disconnect ECM J1 connector
4
5. Back probe terminal J1-10 (Violet/White wire) of
ECM J1 connector.
6. Connect terminal J1-10 back probe to black meter
test lead on DVOM.
7. Set DVOM to read resistance.
8. Does DVOM read 0.5 ohms or less?
A
Figure 2-49 Cylinder 2 Ignition Coil Connector.
DTC P0352 Cylinder 2 Ignition Coil Fault
Scan and Non-Scan Diagnostics
Action
B
A B
Yes
Go to step 2.
Circuit OK.
Replace igni-
tion coil.
Go to step 4.
Replace
ignition coil.
1
10
J1-10
Figure 2-50 ECM J1 Connector (Grey).
59
No
Problem
corrected.
Go to step 3.
Reading is below
12.2 volts DC.
Perform visual and
continuity check of
Main Power Relay
and 20 amp
Battery fuse (Yellow).
Resistance reading
is above 0.5 ohms.
Repair or replace
EFI wire harness.
9
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