Briggs & Stratton BIG BLOCK EFI, Руководство по ремонту

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Section 2: Troubleshooting DTCs 47
Step Action Yes No
1
1. Disconnect and reconnect cylinder 1 fuel injector and
ECM J2 (Black) 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 fuel injector connector.
3. Install Briggs & Stratton Noid Light (Part No. 19623).
4. Start and run engine.
5. Does Noid Light fl ash?
Replace fuel
injector.
Go to step 3.
3
1. Turn Ignition OFF.
2. Remove Noid Light and connect fuel injector connector.
3. Back probe (using fused patch cord) terminal A (Red
wire) of fuel injector connector.
4. Connect terminal A back probe to red meter test lead
on DVOM.
5. Connect black meter test lead to a known good ground.
6. Set DVOM to read volts DC.
7. Turn Ignition ON, Engine OFF.
8. 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. Disconnect fuel injector connector.
3. Disconnect ECM J2 connector.
4. Back probe terminal B (Lt. Blue/Black wire) of fuel
injector connector.
5. Connect terminal B back probe to red meter test lead
on DVOM.
6. Back probe terminal J2-05 (Lt. Blue/Black wire) of ECM
J2 connector.
7. Connect terminal J2-05 back probe to black meter test
lead on DVOM.
8. Set DVOM to read resistance.
9. Does DVOM read less than 0.5 ohms?
Control circuit
is OK.
Reading is above
0.5 ohms. Check
terminals for corro-
sion or replace EFI
wire harness.
NOTE: If DTC still
present after re-
placement of EFI
wire harness, then
replace ECM due to
failed injector driver.
DTC P0201 Cylinder 1 Fuel Injector Fault
Scan and Non-Scan Diagnostics
1
9
10
18
J2-05
A
B
A
B
Figure 2-34 Cylinder 1 Fuel Injector Connector.
Figure 2-35 ECM J2 Connector (Black).