Toyota Celica 2005 Repair Manual page 598

5 Check if DTC output recur.
PREPARATION:
(a) Clear the DTC (See page DI−295).
(b) Start the engine.
(c) Run the engine at idle for 15 seconds or more.
CHECK:
Read the DTC (See page DI−295).
RESULT:
Display (DTC Output)
"P0120, P0122, P0123, P0220, P0222, P0223 and/or P2135" are output
NG
Replace ECM (See page SF−78).
2005 CELICA (RM1131U)
DIAGNOSTICS
again
No DTC output
− ENGINE (2ZZ−GE)
OK System is OK.
597
Proceed to
A
B
DI−399