Toyota ZZT230 series Repair Manual page 257

Dl-46
INSPECTION PROCEDURE
•
HINT:
•
If the vehicle run out of fuel, the air-fuel ratio is LEAN and DTC P0125 will be recorded .
The MIL then comes on.
r eco r ds
Read freeze frame data using TOYOTA hand-held tester or OBD
the engine conditions when the malfunction is detected, when troubleshooting it is useful for
r ati o
determining whether the vehicle was running or stopped, the engine warmed up or not, the air-fuel
lean or rich, etc at the time of the malfunction.
1 Are there any other codes (besides DTC P0125) being output ?
2 Connect the OBD II seen tool or TOYOTA hand-held tester and reed value for
vollage output
PREPARA TION:
(a ) Connect the OBD II
to
(b) Warm up engine
CHECK:
Read voltage output of the oxygen sensor {bank 1 sensor 1 ) when engine is suddenly raced.
HINT:
OK: racing
Perform quick to 4,000
Both
oxygen
sensor
r.
Check for o
3
sensor (ban 1 sensor 1) (See page IN-30).
of
oxygen sensor (bank 1 sensor 1 ).
scan
tool or TOYOTA hand-held tester to the DLC3.
normal operating temp (above 75°C).
rpm 3 times using accelerator pedal.
u
(bank 1 sensor 1)
o
n and short In harness and connector between ECM and oxygen
I I
scan tool. Because freeze frame
10 t DTC chart .
Go v n
rele a
ut
t p a RICH signal (0.45 V or more) at least once.
Go to step 10.
Repair or
replace harness
or
connector.