212 KENR9126
Troubleshooting Section
Results:
•
OK – The engine harness and the ECM are OK.
Repair: Tempo
rarily connect a new sensor to
the harness, but do not install the new sensor in
the transmission. Verify that there are no active
diagnostic c
odes for the sensor. If there are no
active diagnostic codes for the sensor, permanently
install the new sensor. Clear any logged diagnostic
codes.
STOP.
•
Not OK – The 03 d iagnostic code remains active
with the jumper in place. Proceed to Test Step 6.
Test Step 6. Check the Operation of the
ECM
A. Remove th
e electrical power from the ECM.
B. Check the operation of the ECM by creating an
open circ
uitattheECM:
a. Remove terminal P2-49 (signal).
b. Remove terminal P2-44 (return).
c. Resto re
the electrical power to the ECM.
Monitor the “Active Diagnostic Code” screen
on the electronic service tool. Wait at least 30
second
s for activation of the code.
An 03 diagnostic code should be active for the
senso
r.
C. Check the operation of the ECM by creating a
short
at the ECM:
a. Install a wire jumper between terminals P2-49
(sig
nal) and P2-44 (return).
b. Monitor the “Active Diagnostic Code” screen on
elec
tronic service tool. W ait at least 30 seconds
for activation of the code.
An 0
4 diagnostic code should be active when
the wire jumper is installed.
c. Rem
ove the wire jumper. Return all wiring to
the original configuration.
Ex
pected Result:
An 03 diagnostic code is active when the signal
wi
re is removed from the ECM connector. A n 04
diagnostic code is active when the signal wire is
connected to the return wire.
Results:
•
OK – The ECM is working properly. The problem
is in the wiring between the ECM and the harness
connector. Th
ere may be a problem in a connector.
Repair: Repair the wire and/or the connector.
Replace part
s, if necessary.
Verify that the problem is resolved.
STOP.
•
Not OK – One o
f the following conditions exists:
The 03 diagnostic code is not active when the
sensor signal wire is disconnected. The 04
diagnosti
c code is not active when the wire jumper
is installed.
Repair: Re
place the ECM. Refer to electronic
troubleshooting T roubleshooting, “Replacing the
ECM”. Verify that the original problem is resolved.
STOP.
i04012416
Wastegate Solenoid - Test
System Operation Description:
This procedure is only applicable to engines that
have a wastegate regulator.
Use this procedure under the following
conditions:
Use this procedure if another procedure has directed
you here. Use this procedure if any of the following
diagn
ostic codes are active:
•
0526-05 Turbo Wastegate Drive current below
norm
al
•
0526-06 Turbo Wastegate Drive current above
norm
al
•
0526-07 Turbo Wastegate Drive not responding
pro
perly
Some engine models will have a turbocharger with
an e
lectronically controlled wastegate. Typically, the
wastegate is a mechanical valve that is used in the
turbocharger in order to regulate the intake manifold
pr
essure to a set value.
The control system for the electronically controlled
wa
stegate precisely regulates the intake manifold
pressure by using a wastegate regulator to control
the wastegate.
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