KENR9126 159
Troubleshooting Section
C. If a sensor must be replaced or a sensor must be
reinstalled, c
omplet e all of the following tasks:
•
Lubricate the “O” ring with clean engine
lubricating o
il.
•
Ensure that the plug for the sensor has a seal
inside the co
nnector body. If a seal is damaged
or missing, replace the seal.
•
Ensure that
the sensor is fully seated into the
engine before tightening the bracket bolt.
•
Ensure that
the connector is latched.
•
Ensure that the harness is correctly secured,
and ensure
that the harness is attached to the
harness clip.
D. Turn the ke
yswitch to the ON position.
E. Start the engine.
F. Use the electronic service tool in order to monitor
the diagnostic codes.
G. Use the electronic service tool in order to clear all
logged diagnostic codes and then verify that the
replace
ment sensor has eliminated the fault.
Expected Result:
The fault has been rectified.
Result
s:
•
OK – If the fault is eliminated with the replacement
senso
r, reconnect the suspect sensor. If the fault
returns with the suspect sensor, replace the
suspect sensor.
Repair: 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 fault still exists. Proceed to Test
Step 8.
Test Step 8. Check if the Repl acement of
the ECM Eliminates the Fault
A. Ma
ke sure that the latest flash file for the
application is installed in the ECM. Refer to
Troubleshooting, “Flash Programming”.
B. Contact the Technical Help Desk.
N
ote: This consultation can greatly reduce the repair
time.
C. If the Technical Help Desk recommends the
use of a test ECM
, install a test ECM. Refer to
Troubleshooting, “Replacing the ECM”.
D. Connect the el
ectronic service tool to the
diagnostic connector.
E. Turn the keys
witchtotheONposition.
F. Start the engine.
G. Use the electronic service tool to recheck the
system for active diagnostic codes.
Expected Result:
The fault i
s eliminated.
Results:
•
OK
Repair: I
f the fault is eliminated with the test ECM,
perform the following procedure:
1. Reconnec
t the suspect ECM.
2. If the fault returns with the suspect ECM,
replace
the ECM.
3. Use the electronic service tool in order to clear
all logg
ed diagnostic codes and then verify that
the repair eliminates the fault.
STOP.
•
Not OK – The fault was not eliminated with a test
ECM.
Repair: Install the original ECM.
1. If the fault persists, the fault may be a damaged
timing ring. Check the timing ring and/or replace
the t
iming ring.
2. If the fault is not eliminated, repeat the
diag
nostic procedure from Step 1.
STOP.
i04
022111
Engine Temperature S enso r
Ope
n or S ho rt Circuit - Test
System Operation Description:
Us
e this procedure under the following
conditions:
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