134 KENR9126
Troubleshooting Section
Results:
•
OK – The diagnostic connector is currently
receiving the correct voltage. Proceed to Test Step
5.
•
Not OK – The diagnostic connector is not receiving
the c orrect v
oltage.
Repair: Refer to Troubleshooting, “Engine Wiring
Informatio
n”.
Proceed to Test Step 2.
Test Step 5. Check the Data Link
Connections
A. Turn the ke
yswitchtotheOFFposition.
B. Disconnect the communications adapter from the
diagnost
ic connector.
C. If the diagnostic connector is installed on the
applicat
ion, disconnect P1 OEM connector from
connector J1. Check the resistance between
E-C1:23 and diagnostic pin “D”. If the diagnostic
connect
or is installed on the engine, disconnect
P2 from connector J2. Check the resistance
between P2:21 and diagnostic pin “D”.
D. If the diagnostic connector is installed on the
application, check the resistance between P1:24
and dia
gnostic pin “E”. If the diagnostic connector
is installed on the engine, check the resistance
between P2:20 and diagnostic pin “E”.
Expected Result:
The re
sistance that is measured is less than 10
Ohms.
Resu
lts:
•
OK – The resistance is less than 10 Ohms.
Proc
eedtoTestStep6.
•
Not OK – The resistance is greater than 10 Ohms.
Repair: Perform the followin g repair:
Rep
air the connectors and/or the harness, or
replace the connectors and/or the harness. Ensure
that all of the seals are correctly in place and
en
sure that the connectors are completely coupled.
Use the electronic service tool in order to clear all
lo
gged diagnostic codes and then verify that the
repair eliminates the fault.
S
TOP.
Test Step 6. Change the Components of
the Electronic Service Tool
A. If another electronic engine is available, connect
the electronic service tool to the other engine.
Ensure that t
he same cables are used.
B. Turn the keyswitch to the ON position. Determine
if the elect
ronic service tool operates correctly on
the other engine.
C. If another e
ngine is not available, obtain a
replacement communications adapter and a
replacement set of electronic service tool cables.
Ensure tha
t the set of electronic service tool
cables are a complete set.
D. Install th
e replacement communications adapter
and electronic service tool cables and connect to
the diagnostic connector.
E. Turn the keyswitch to the ON position.
F. If chang
ing the communications adapter or the
electronic service tool cables allows the electronic
service tool to operate correctly, use the following
procedu
re:
a. Replace the components from the old set of
electr
onic service tool cables into the new set
of cables that operate. Replace one component
at a time.
b. Apply power to the electronic service tool after
each of the components is replaced. Use this
metho
dtofind the faulty component.
G. If changing the electronic service tool cables does
not al
low the electronic service tool to operate
correctly, connect another electronic service tool.
H. Turn
the keyswitch to the ON position.
Expected Result:
Result 1 The original electronic service tool works
on another engine.
Result 2 A different electronic service tool works on
the original engine while the engine is being tested.
Results:
•
Re
sult 1 – Proceed to Test Step 7.
•
Result 2
Repair: Send the faulty electronic service tool for
repairs.
STOP.
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