Section 04 ENGINE MANAGEMENT (SDI)
Subsection 03 (COMPONENT INSPECTION, REPLACEMENT AND ADJUSTMENT)
NOTE: Resetmustbedoneeachtimethethrottle
position sensor (TPS) is loosened or removed or
throttle body or ECM is replaced.
CAUTION: An improperly set TPS may lead to
poor engine performance.
Use the vehicle communication kit (VCK) with the
B.U.D.S. software to perform this adjustment.
Unscrew idle speed screw until the throttle body
plate stop lever rest against its zero position stop-
per screw (capped screw). If necessary, loosen
thethrottlecable. Openthrottleapproximately
one quarter then quickly release. Repeat 2 - 3
times to settle throttle plate.
2
1
A32C9TA
1. Idle speed screw
2. Zero position stopper screw
Push the Reset buttonintheSetting section of
B.U.D.S.
Re-power up the ECM by pushing the START/RER
button momentarily.
The throttle opening displayed in B.U.D.S. should
be 0.00 (0.1 maximum).
If TPS is not within the allowed range while reset-
ting the Closed Throttle, the ECM will generate a
fault code and will not accept the setting.
Now, the idle speed screw has to be adjusted.
To do this, screw in the idle speed screw until
B.U.D.S. throttle opening displays value as per fol-
lowing table.
VALUE
MODEL
AT SEA LEVEL
ABOVE 1800 m
(6000 ft)
Mach Z 4.8° N.A.°
Summit
4.5° 5.0°
If throttle cable has been loosen during the proce-
dure, adjust throttle cable.
Start engine and make sure it operates normally
through its full engine RPM range. If fault codes
appear, refer to EMS FAULT CODES in the DIAG-
NOSTIC PROCEDURES section for more informa-
tion.
CRANKSHAFT POSITION
SENSOR (CPS)
NOTE: The CPS is used for forward and reverse.
A35C43A
1
1. CPS connector
150 mmr2005-126
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