Toyota Celica 2005 Repair Manual page 787

DI−588
INSPECTION PROCEDURE
HINT:
Read freeze frame data using the hand−held tester or the OBD II scan tool. Freeze frame data records the
engine conditions when a malfunction is detected. When troubleshooting, freeze frame data can help deter-
mine if the vehicle was running or stopped, if the engine was warmed up or not, if the air−fuel ratio was lean
or rich, as well as other data from the time when a malfunction occurred.
1 Visually check throttle valve.
PREPARATION:
Remove the intake air connector.
CHECK:
Check between the throttle valve and the housing for foreign objects. Also, check if the valve can open and
close smoothly.
OK
2 Check if DTC outputs reoccur.
PREPARATION:
(a) Clear the DTC (See page DI−295).
(b) Start and warm up the engine.
(c) Run the engine.
(d) Fully depress and release the accelerator pedal in a moment.
CHECK:
Read the DTC using the hand−held tester or the OBD II scan tool (See page DI−295).
RESULT:
Display (DTC Output)
No DTC output
DTC P2111 or P2112 output reoccur
A
Check for intermittent problems
(See page DI−295).
2005 CELICA (RM1131U)
DIAGNOSTICS − ENGINE (2ZZ−GE)
NG Remove foreign object and clean throttle body.
B Replace ECM (See page SF−78).
786
Proceed to
A
B