Toyota Celica 2005 Repair Manual page 327

DI−128
2 Check the output voltage of 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 menus: 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 be less than
0.6 sec. (See the following table).
1V
0.45V
0.35V
0V
NG
2005 CELICA (RM1131U)
DIAGNOSTICS
OK NG
t t
0.6 sec. or more
OK
− ENGINE (1ZZ−FE)
NG NG
Go to step 9.
326
NG
A21567