Toyota Celica 2005 Repair Manual page 641

DI−442
Rear HO2S element monitor
If all the values ($81, $84, $85 and $87) are out of the standard values, the ECM interprets this as a malfunc-
tion.
TEST ID
$81
$84
$85
$87
WIRING DIAGRAM
Refer to DTC P0130 on page DI−411.
CONFIRMATION DRIVING PATTERN
Vehicle speed
25 mph
(40 km/h)
Ignition OFF
(a), (b)
(a) Connect the hand−held tester to the DLC3.
(b) Switch the hand−held tester from normal mode to check mode (See page DI−295).
(c) Start the engine and run at idle for 60 seconds or more.
(d) Drive the vehicle at 25 mph (40 km/h) or more for 40 seconds or more.
(e) Run the engine at idle for 10 seconds or more.
(f) Perform steps (d) and (e) 12 times.
HINT:
If a malfunction exists, the MIL will be illuminated on the multi information display during step (f).
NOTICE:
If the conditions in this test are not strictly followed, a malfunction will not be detected. If you do not
have a hand−held tester, turn the ignition switch OFF after performing steps from (c) to (f), then per-
form steps from (c) to (f) again.
2005 CELICA (RM1131U)
DIAGNOSTICS
Description of TEST DATA
Percentage of monitoring time
when the HO2S voltage is less
than 0.05 V
Percentage of monitoring time
when the HO2S voltage is more
than 0.7 V
Time when the HO2S voltage is
0.45 V or more
Percentage of monitoring time
when the HO2S voltage is 0.45 V
or more
Once
40 seconds
or more
(d)
Idling (c) (e)
60 seconds 10 seconds
or more
− ENGINE (2ZZ−GE)
Conversion Factor
Multiplied by 0.3906
Multiplied by 0.3906
Multiplied by 0.2621
Multiplied by 0.3906
(f)
Twice
12 times
40 seconds
40 seconds
or more
or more
(d)
(e)
10 seconds
640
Unit
%
%
sec.
%
(d)
(e)
10 seconds
A21256