198 KENR9126
Troubleshooting Section
b. If the engine is equipped with multiple throttle
position senso
rs, verify that the “Secondary
Throttle Enable” parameter is programmed to
“Enabled”.
Expected Result:
The “Seconda
ry Throttle Enable” parameter is
programmed correctly.
Results:
•
OK – The “Secondary Throttle Enable” parameter
is programm
ed correctly. Proceed to Test Step 2.
•
Not OK – The “Secondary Throttle Enable”
parameter
is not programmed correctly.
Repair: Program the “Secondary Throttle Enable”
parameter
to the correct value.
Verify that the repair eliminates the problem.
STOP.
Test Step
2. Inspect the Electrical
Connect
orsandtheWiring
A. Remove the electrical power from the ECM.
B. Thoroughly inspect the ECM connector and the
customer connector. Inspect the connections on
each th
rottle position sensor. Refer to diagnostic
functional tests Troubleshooting, “Electrical
Connectors - Inspect”.
g02192036
Illustration 83
P1 terminals that are associated with the throttle position sensor
(P1-53) Prima ry throttle po sition (P1-13) Secondary throttle position
To Next Page
