Toyota Celica 2005 Repair Manual page 626

2 Check output voltage of heated oxygen sensor during idling.
PREPARATION:
(a) Connect the hand−held tester or the OBD II scan tool to the DLC3.
(b) Start the engine and push the hand−held tester or the OBD II scan tool main switch ON.
(c) When using hand−held tester, enter the following menu: DIAGNOSIS / ENHANCED OBD II / DATA
LIST / ALL / O2S B1S1."
(d) Warm up the heated oxygen sensor with the engine speed at 2,500 rpm for approximately 90 seconds.
CHECK:
Read the output voltage of the heated oxygen sensor during idling.
OK:
Heated oxygen sensor output voltage:
Alternates between less than 0.35 V and more than 0.45 V, and period of "t" must exist less than
0.6 second (See the following table).
NG
2005 CELICA (RM1131U)
DIAGNOSTICS
0.45V
0.35V
− ENGINE (2ZZ−GE)
OK Go to step 9.
625
DI−427
A21255