KENR9126 215
Troubleshooting Section
Results:
•
Diagnostic codes 526-5 and/or 526-6 are active
and/or logged – Proceed to Test Step 2.
•
No Codes – The fault seems to be resolved.
Repair: For i
ntermittent faults, refer to
Troubleshooting, “Electrical Connectors - Inspect”.
STOP.
Test Step 2. Inspect Electrical Connectors
and Wiring
A. Thoroughly inspect the P2/J2 ECM connector and
the P511 connector for the wastegate regulator.
Refer to Tr
oubleshooting, “Electrical Connectors -
Inspect” for details.
B. Perform a 4
5 N (10 lb) pull test on each of the
wires that are associated with the wastegate
solenoid.
C. Check the screw for the ECM connector for the
correcttorqueof5.0N·m(44lbin).
Expected Result:
All conn
ectors, pins, and sockets are completely
coupled and/or inserted and the harness is free of
corrosion, abrasion, and pinch points.
Results:
•
OK – Th
e harness is OK. Proceed to Test Step 3.
•
Not OK – There is a fault in the connectors and/or
the ha
rness.
Repair: Repair the connectors or the harness or
repl
ace the connectors or the harness. Ensure that
all of the seals are correctly installed and ensure
that the connectors are completely coupled.
Use the electronic service tool in order to clear all
logged diagnostic codes and then verify that the
repa
ir eliminates the fault.
STOP.
Test Step 3. Determine the Diagnostic
Code that is A ctive
A. Tu
rn 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.
B
.
D
etermine if the fault is related to either of the
following:
•
“Low current” (open circuit)
•
“High current” (short circuit)
Expected Resu
lt:
The electronic service tool displays no diagnostic
codes.
Results:
•
OK – There are no active codes.
Repair: The
original codes may have been caused
by a loose connector. If this is an intermittent fault,
refer to Troubleshooting, “Electrical Connectors -
Inspect”.
STOP.
•
Not OK – Diagnostic code 526-5 is active at this
time. Proceed to Test Step 4.
•
Not OK – Diagnostic code 526-6 is active at this
time. Proceed to Test Step 6.
•
Not OK – Diagnostic code 526-7 is active at this
time. Proceed to Test Step 4.
Test Step 4. C reate a Short Circuit in the
Harness at the Solenoid
A. Turn th
e keyswitch to the OFF position.
B. Disconnect the P511 connector for the wastegate
regul
ator.
C. Fabricate a jumper wire between P511:1 and
P511:
2inordertocreateashortcircuit.
D. Turn the keyswitch to the ON position. Access the
“Dia
gnostics Tests” on the electronic service tool.
Activate the “Turbo Wastegate Solenoid Test”.
Wait at least 30 seconds in order for the result to
be di
splayed.
E. Check for active diagnostic codes on the electronic
ser
vice tool.
Expected Result:
Diagnostic code 526-6 is now active.
Re
sults:
•
OK – Diagnostic code 526-6 is now active. There
is
a fault in the wastegate regulator.
Repair: Perform the following procedure:
1. Temporarily connect a replacement wastegate
regulator.
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