Chrysler 2005 Crossfire SRT6 Service Manual page 2001

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(P0120) ELECTRONIC THROTTLE CONTROL MOTOR PERFORMANCE (CONTINUED)
2.
CHECK FOR CURRENT DTC
Note: Diagnose any other Throttle Body DTC(s) before continu-
ing.
Note: The throttle plate should be free from binding and carbon
build up.
Note: Ensure the throttle plate is at the idle position.
Note: Inspect the engine for vacuum leaks.
Note: If the PCM detects and stores a DTC, the PCM also stores
the engine/vehicle operating conditions under which the DTC was
set. Some of these conditions are displayed on the DRB III at the
same time the DTC is displayed.
Note: Before erasing stored DTCs, record these conditions.
Attempting to duplicate these conditions may assist when check-
ing for a DTC.
Turn the ignition on.
With the DRB III , erase PCM DTCs.
Note: It maybe necessary to road test the vehicle for this DTC to set.
With the DRB III , read PCM DTCs.
Did this DTC set again?
Yes >> Go To 3
If DTC P0121 APPS 5 VOLT SUPPLY CIRCUIT is present with this DTC, Go To 10
No >> Go To 25
3.
CHECK FOR THROTTLE PLATE BINDING, STICKING, OR OBSTRUCTION
Turn the ignition off.
Remove the MAF Sensor.
Open and close the throttle plate fully by hand to ensure there is not a binding or sticking condition and that there
is nothing obstructing it from opening.
Did the throttle plate open and close freely?
Yes >> Go To 4
No >> Repair the condition or replace the Throttle Body. (Refer to 14 - FUEL SYSTEM/FUEL INJECTION/
THROTTLE BODY - REMOVAL).
ENGINE - ELECTRICAL DIAGNOSTICS 9 - 77