Briggs & Stratton BIG BLOCK EFI, Repair Manual

Page: 69 / 142

Section 2: Troubleshooting DTCs 65
Step Action Yes No
1
1. Disconnect and reconnect ECM J2 (Black) connector.
2. Turn Ignition ON, Engine OFF.
3. Clear codes.
4. Turn Ignition OFF, and then back ON.
5. Does DTC return?
Go to step 2.
Problem
corrected.
2
1. Turn Ignition OFF.
2. Connect red meter test lead on DVOM to battery
positive (+) post.
3. Connect black meter test lead on DVOM to battery
negative (-) post.
4. Set DVOM to read volts DC.
5. Does DVOM read 12.2-14.5 volts DC?
Go to step 3. Go to step 5.
3
1. Back probe terminal J2-18 (Red wire) of ECM J2 con-
nector.
2. Connect terminal J2-18 back probe to red meter test
lead on DVOM.
3. Connect black meter test lead on DVOM to a known
good ground.
4. Turn Ignition ON, Engine OFF.
5. Observe voltage on DVOM.
6. Is reading within 0.5 volts of battery voltage?
Go to step 4. Go to step 8.
4
1. Turn Ignition OFF.
2. Back probe terminal J2-15 (Red wire) of ECM J2 con-
nector.
3. Connect terminal J2-15 back probe to red meter test
lead on DVOM.
4. Connect black meter test lead on DVOM to a known
good ground.
5. Turn Ignition ON, Engine OFF.
6. Observe voltage on DVOM.
7. Is voltage within 0.5 volt of battery voltage?
Go to step 5. Go to step 9.
DTC P0562 System Voltage Low
Non-Scan Diagnostics
(Page 1 of 2)
1
9
10
18
J2-15 J2-18
Figure 2-54 ECM J2 Connector (Black).