KENR9126 165
Troubleshooting Section
Test Step 7. Bypass The Harness Wiring
Between The ECM And The Sensor
Connector
A. Turn the keyswitch to the OFF position.
B. Disconnect the P2 connector on the ECM harness,
and the suspect sensor connector.
C. Remove the sensor signal wire from the P2
connector.
D. Remove the signal wire (terminal 1) from the
sensor connector on the engine harness.
E. Fabricate a jumper wire that is long enough to
reach from the ECM to the sensor connector with
sockets on
both ends.
F. Insert one end of the jumper into the ECM
connecto
r. Insert the other end of the jumper into
the sensor connector of the engine harness.
G. Reconne
ct the connector for the ECM harness
and the sensor connector.
H. Turn the
keyswitch to the ON position.
I. Use the electronic service tool in order to monitor
the “Ac
tive Diagnostic Code” screen for either the
“Voltage Above Normal” diagnostic code for the
sensor or the “Voltage Below Normal” diagnostic
code fo
r the sensor.
Expected Result:
The diagnostic code disappears when the jumper is
installed.
Results:
•
OK – T
here is a fault in the wiring harness.
Repair: Perform the followin g repair:
1. Repair the faulty harness or replace the faulty
harness.
2. Clear all diagnostic codes.
3. Use
the electronic service tool in order to clear
all logged diagnostic codes and then verify that
the repair eliminates the fault.
STOP.
•
No
tOK – The fault is intermittent. Proceed to Test
Step 8.
Test Step 8. Perform t he “Wiggle Test” on
the Perkins Electronic Service To ol (EST)
A. Select the “Wiggle Test” from the diagnostic tests
on the electronic service tool.
B. Choose the appropriate group of parameters to
monitor.
C. Press the “Start” button. Wiggle the wiring harness
in order to reproduce intermittent faults.
If an intermittent fault exists, the status will be
highlighted and an audible beep will be heard.
Expected Result:
No intermi
ttent faults were indicated during the
“Wiggle Test”.
Results:
•
OK – No intermittent faults were found. The
harness
and connectors appear to be OK. If this
test was required as part of another procedure,
return to that procedure and continue testing. If
this tes
t has resolved the fault, return the engine
to service. STOP.
•
Not OK –
At least one intermittent fault was
indicated.
Repair
: Repair the harness or the connector.
Use the electronic service tool in order to clear all
logge
d diagnostic codes and then verify that the
repair eliminates the fault.
STOP.
i04019619
Engi
ne Temperature Sensor
Open or Short Circuit - Test
System Operation Description:
This test procedure is used for the active
temperature sensor. The active sensor has a
th
ree-wire electrical connector.
Use this procedure under the following
co
nditions:
Use this procedure if another procedure has directed
yo
u here. Use this procedure if any of the following
diagnostic codes are active:
•
0
535-03 Exhaust Gas Temperature Sensor voltage
above normal
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