Briggs & Stratton BIG BLOCK EFI, Repair Manual

Page: 63 / 142

Section 2: Troubleshooting DTCs 59
DTC P0352 Cylinder 2 Ignition Coil Fault
Scan and Non-Scan Diagnostics
Step Action Yes No
1
1. Disconnect and reconnect cylinder 2 ignition coil and
ECM J1 (Grey) connectors.
2. Turn Ignition ON, Engine OFF. Clear codes.
3. Turn Ignition OFF, and then back ON.
4. Does DTC return? Go to step 2.
Problem
corrected.
2
1. Turn Ignition OFF.
2. Disconnect ignition coil connector.
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)?
Circuit OK.
Replace igni-
tion coil.
Go to step 3.
3
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.
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?
Go to step 4.
Reading is below
12.2 volts DC.
Perform visual and
continuity check of
Main Power Relay
and 20 amp
Battery fuse (Yellow).
4
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
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?
Replace
ignition coil.
Resistance reading
is above 0.5 ohms.
Repair or replace
EFI wire harness.
1
9
10
18
A
B
A B
J1-10
Figure 2-49 Cylinder 2 Ignition Coil Connector. Figure 2-50 ECM J1 Connector (Grey).