Troubleshooting

128 RENR2696-01
Troubleshooting Section
•
P1:17
•
P1:44
E. Check the ECM co
nnector (Allen Head Screw) for
the proper torque of 6.0 N·m (55 lb in).
Expected Resu
lt:
The connectors and wiring should be free of the
following pro
blems: damage, abrasion, corrosion,
and incorrect attachment.
Results:
•
OK – Proceed to Test Step 2.
•
Not OK
Repair: Repai
r the connectors or wiring and/or
replace the connectors or wiring.
STOP.
Test Step 2. Check f or active Diagnostic
Codes.
A. Turn the keyswitch to the ON position.
B. Use the elect
ronic service tool to check for
diagnostic codes.
Expected Res
ult:
RESULT 1 The electronic service tool displays the
following a
ctive diagnostic codes:
•
91-08
•
774-08
RESULT 2 The
electronic service tool displays the
following active diagnostic codes:
•
41-03
•
41-04
RESULT 3 The electronic service tool displays no
active diagnostic codes.
Results:
•
Result 1 – Pr
oceed to Test Step 3.
•
Result 2 – Proceed to Test Step 5.
•
Result 3 – Proceed to Test Step 3.
Test Step 3. Check the Throttle Position
with the Electronic Service To ol.
A. Connect the electronic service tool to the service
tool connector.
B. Turn the keyswitch to the ON position. The engine
shouldbeOFF.
C. Observe the throttle position reading on the
electronic service tool.
D. Depress the throttle and release the throttle.
Expected Res
ult:
The output should be “0 percent” when the pedal
is released.
The output should increase to “100
percent” when the throttle pedal is fully depressed.
The output sh
ould be between “20 percent” and “27
percent” at the low idle position. The output should
be between “80 percent”and “87 percent ” at the high
idle positi
on.
Results:
•
OK – The throttle position sensor is operating
correctly. P roceed to Test Step 5.
•
Not OK – The ECM is not receiving a correct
signal from the sensor. There may be a problem in
the harness
. Proceed to Test Step 4.