Perkins M216C - Page 217

KENR9126 217
Troubleshooting Section
2. If the fault is eliminated, reconnect the suspect
wastegate regu
lator. If the fault returns,
permanently install the replacement wastegate
regulator.
STOP.
•
Not OK – Diagn
ostic code 526-6 is still active.
Proceed to Test Step 7.
Test Step 7.
Create an Open Circuit at the
ECM
A. Turn the keyswitch to the OFF position.
B. Remove the wires from P2:17 and P2:19 in order
to create an open circuit at the ECM.
C. Turn the keyswitch to the ON position. Access the
“Diagnostics Tests” on the electronic service tool.
Activate
the “Turbo Wastegate Solenoid Test”.
W ait at least 30 seconds in order for the result to
be displayed.
D. Check for active diagnostic codes on the electronic
service tool.
Expected Result:
Diagnos
tic code 526-5 is now active.
Results:
•
OK – Diagnostic code 526-5 is now active. There
is a short circuit in the harness between the ECM
and th
e wastegate regulator.
Repair: Repair the harness or replace t he harness.
Use the electronic service tool in order to clear all
logged diagnostic codes and then verify that the
repa
ir eliminated the fault.
STOP.
•
Not OK – Diagnostic code 526-6 is still present.
Rep
air: Perform the following procedure:
1. Make sure that the latest flash file for the
app
lication is installed in the ECM. Refer to
Troubleshooting, “Flash Programming”.
2. Co
ntact the Global Technical Support Center.
Note: This consultation can greatly reduce the repair
ti
me.
3. If the Global Technical Support Center
r
ecommends the use of a test ECM, install a
test ECM. Refer to Troubleshooting, “Replacing
the ECM”.
4. Use the electronic service tool to recheck the
system for a cti
ve diagnostic codes.
5. IfthefaultisresolvedwiththetestECM,
reconnect the
suspect ECM.
6. If the fault returns with the suspect ECM,
replace the E
CM.
7. Use the electronic service tool in order to clear
all logged d
iagnostic codes and then verify that
the repair eliminates the fault.
STOP.