Toyota Camry Manual page 1336

CONFIRMATION ENGINE RACING PATTERN
Engine Speed
3,000 rpm
2,000 rpm
Idling
IG SW OFF
(a) Connect the OBD II scan tool or TOYOTA hand–held tester to the DLC3.
(b) Start engine and warm it up with all accessories switched OFF until water temp. is stable.
Race the engine at 2,500 ∼ 3,000 rpm for about 3 min.
(c)
(d) When racing the engine at 3,000 rpm for 2 sec. and 2,000 rpm for 2 sec. alternately, check the wave-
form of the heated oxygen sensor (bank 1 sensor 2).
INSPECTION PROCEDURE
HINT:
Read freeze frame data using TOYOTA hand–held tester or OBD II scan tool. Because freeze frame records
the engine conditions when the malfunction is detected, when troubleshooting it is useful for determining
whether the vehicle was running or stopped, the engine warmed up or not, the air–fuel ratio lean or rich, etc.
at the time of the malfunction.
1 Are there any other codes (besides DTC P0420) being output ?
NO
2 Check gas leakage on exhaust system.
OK
DIAGNOSTICS
(b)
(a)
Warmed up
YES
NG
– ENGINE (1MZ–FE)
(c)
(d)
3 min. or so
2 sec. 2 sec.
Go to relevant DTC chart.
Repair or replace.
Author :
Check
Date :
DI–309
Time
A00479
544