Section 04 FUEL SYSTEM
Subsection 02 (ELECTRONIC FUEL INJECTION (EFI))
Use a
DIGITAL INDUCTION TACHOMETER (P/N 529
014 500)
.
529014500
Wrap the tachometer's wire a few times around
the protruding part of ignition coil.
A32CCIA
TYPICAL
Start engine to verify engine RPM.
NOTE:
If idle speed is not within specifications,
check if there is any occurred or active fault
code(s). If not, proceed with the
Closed Throttle
reset. If idle speed is still not adequate, there is
probably a mechanical problem.
CLOSED THROTTLE RESET
General Information
This operation performs a reset of the TPS values
of the throttle body in the ECM.
Closed throttle reset must be done only when:
– Replacing throttle body.
– Replacing ECM.
Closed Throttle Reset Procedure
Use the B.U.D.S. software to perform this set-
ting. Refer to
COMMUNICATION TOOLS AND
B.U.D.S. SOFTWARE
subsection.
Install the D.E.S.S. key on its post.
Briefly press the START button to wake up the
ECM.
Engine must not crank.
In B.U.D.S., click on the
Reset
button.
smr2009-030-002_a
SETTING AND ECM TABS
1. Click Reset button
The following message will confirm the operation.
smr2009-030-003
Reset is completed.
NOTE:
It is not necessary to click on the Write
button in B.U.D.S. Exit B.U.D.S.
NOTE:
If throttle valve was not within the al-
lowed range while resetting the
Closed Throttle
,
nothing would tell you that it was wrong. No
error message would be displayed. However, a
fault code would be set when engine would be
started.
Start engine and make sure it operates normally
through its full engine RPM range. Check for
fault codes in B.U.D.S. If fault a code related
to the throttle actuator appears, clear it then do
the reset closed throttle procedure again. To
clear faults, refer to
MONITORING SYSTEM AND
FAULT CODES
subsection.
TROUBLESHOOTING
DIAGNOSTIC TIPS
Engine problems are not necessarily related to the
fuel injection system.
222
smr2009-030
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