160 KENR6933
Troubleshooting Section
•
Not OK – The diagnostic codes indicate the
cylinder numbe
rs that have faulty injectors.
Repair: Replace the faulty injectors.
Use the electronic service tool in order to program
the replacement injector trim files . Refer to
Troubleshoot
ing, “Injector Trim File” for further
information.
Use the electr
onic service tool in order to clear the
logged codes.
Turn the keys
witch to the ON position.
Start the engine.
Use the electronic service tool in order to perform
the “Fuel System Verification Test”. If the cylinders
indicate “PA
SS”, then the fault has been cleared.
Use the electronic service tool in order to clear all
logged diagn
ostic codes and then verify that the
repair eliminates the fault.
STOP.
Test Step 3. Ch eck the ECM
A. Temporarily connect a test ECM.
Note: The tes
t ECM must be correctly programmed.
Refer to Troubleshooting, “Replacing the ECM”.
B. Use the elec
tronic service tool in order to perform
the “Fuel System Verification Test”. Verify that the
test eliminates the fault.
Note: The “Fuel System Verification Test” will indicate
if the cylinder has a “Pass” or “Fail”. If the cylinders
indicate “
Pass” then the fault has been cleared.
C. If the test ECM eliminates the fault, reconnect the
suspect EC
M.
D. Use the electronic service tool in order to perform
the “Fuel S
ystem Verification Test”.
Expected Result:
The test ECM clears the fault. Using the electronic
service tool in order to perform the “Fuel System
Verificat
ion Test” with the suspect ECM indicates a
“FAIL” condition.
Results:
•
OK – The test ECM eliminates the fault and the
suspect ECM indicates a “FAIL” condition. Replace
the faulty ECM
. 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 test ECM did not eliminate the fault.
Carefully repeat this procedure from Test Step 1.
i02755837
Injector Solenoid Circu it - Test
System Operation Description:
Use this procedure to troubleshoot any suspected
faults with the injector solenoids.
Use this procedure for the following diagnostic codes:
•
0001-05 Cylinder #1 Injector current below normal
•
0001-06 Cylinder #1 Injector current above normal
•
0002-05 Cylinder #2 Injector current below normal
•
0002-06 Cylinder #2 Injector current above normal
•
0003-05 Cylinder #3 Injector current below normal
•
0003-06 Cylinder #3 Injector current above normal
•
0004-05 Cylinder #4 Injector current below normal
•
0004-06 Cylinder #4 Injector current above normal
•
0005-05 Cylinder #5 Injector current below normal
•
0005-06 Cylinder #5 Injector current above normal
•
0006-05 Cylinder #6 Injector current below normal
•
0006-06 Cylinder #6 Injector current above normal
Perform this procedure under conditions that are
identical to the conditions that exist when the fault
occurs. Typically, faults with the injector solenoid
occur when the engine is warmed up and/or when
the engine is under vibration (heavy loads).
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