
166
KENR6933
Troubleshooting Section
G.
Turn the keyswitch to the ON position.
H.
Perform the “Injector Solenoid Test” at least two
times.
Expected Result:
Exchanging the harness between the two injectors
caused the fault to move to the other injector.
Results:
•
OK – There is a fault with the injector harness
under the valve cover.
Repair:
Repair the injector harness or replace the
injector harness under the valve cover.
Use the electronic service tool in order to clear all
logged diagnostic codes and then verify that the
repair eliminates the fault.
STOP.
•
Not OK – The injector may be faulty.
Repair:
Replace the faulty injector. Refer to
Disassembly and Assembly, “Electronic Unit
Injectors - Remove” and Disassembly and
Assembly, “Electronic Unit Injectors - Install”.
Restore the wiring to the correct injectors.
Perform the “Injector Solenoid Test”.
Use the electronic service tool in order to clear all
logged diagnostic codes and then verify that the
repair eliminates the fault.
STOP.
Test Step 7. Check the ECM for an Open
Circuit
Electrical shock hazard. The electronic unit injec-
tor system uses 67-73 volts.
A.
Turn the keyswitch to the OFF position. A strong
electrical shock hazard is present if the keyswitch
is not turned OFF.
B.
Disconnect connector P2 from the ECM.
C.
Remove the supply wire and the return wire for
the suspect injector from connector P2. Install a
jumper wire into connector P2 in order to provide
a short between the supply and the return of the
suspect injector.
D.
Reinstall connector P2 to the ECM.
E.
Turn the keyswitch to the ON position.
F.
Perform the “Injector Solenoid Test” at least two
times.
Expected Result:
The electronic service tool displays “Current Above
Normal” for the cylinder with the jumper wire.
Note:
On six cylinder engines, shorting a shared
supply will affect the status of three injectors. Ignore
the status of the other injectors that are on the shared
supply.
Results:
•
OK – The ECM is OK.
Repair:
On six cylinder engines, if the three
injectors that share a supply indicate “Open Circuit”
fault codes, the open circuit is probably caused by
a faulty ECM.
Repair the engine harness or replace the engine
harness, as required.
Use the electronic service tool in order to clear all
logged diagnostic codes and then verify that the
repair eliminates the fault.
STOP.
•
Not OK – There may be a fault with the ECM.
Repair:
Temporarily connect a test ECM.
Remove the jumper wire from connector P2 and
reinstall the injector wires.
Perform the “Injector Solenoid Test”.
If the test ECM
fi
xes the fault, reconnect the
suspect ECM.
If the fault returns with the suspect ECM, replace
the ECM. Refer to the Troubleshooting Guide,
“Replacing the ECM”.
Use the electronic service tool in order to clear all
logged diagnostic codes and then verify that the
repair eliminates the fault.
STOP.
Summary of Contents for 1106C Genset
Page 1: ...May 2007 Troubleshooting 1106C Genset PK Engine KENR6933 00 ...
Page 19: ...KENR6933 19 Troubleshooting Section g01178875 Illustration 6 ...
Page 186: ...186 KENR6933 Index Section ...
Page 187: ...KENR6933 187 Index Section ...
Page 188: ...Copyright 2007 Perkins Engines Company Limited All Rights Reserved Printed in U K ...