05-8
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DIAGNOSTICS
SFI SYSTEM (1MZ-FE)
161
2002 LEXUS ES300 REPAIR MANUAL (RM911U)
(5)
See page
05-18
to confirm the details of the
DTC.
NOTICE:
When simulating symptoms with an OBD II scan tool
(excluding hand-held tester) to check the DTC, use
the normal mode. For code on the DTC chart subject
to ”2 trip detection logic”, perform the following ei-
ther action.
Turn the ignition switch OFF after the symptom is
simulated the 1st time. Then repeat the simulation
process again. When the problem has been simulated
twice, the MIL lights up and the DTCs are recorded in
the ECM.
Check the 1st trip DTC using Mode 7 (Continuous Test
Results) for SAE J1979.
(c)
Clear the DTC.
The DTCs and freezed frame data will be erased by either
action.
Operating the OBD II scan tool (complying
with SAE J1978) or hand-held tester to erase
the codes. (See the OBD II scan tool’s
instruction book for operating instructions.)
Disconnecting the battery terminals or E.F.I.
fuse and ETCS fuse more than 30 second.
NOTICE:
If the hand-held tester switches the ECM from the normal
mode to the check mode or vice-versa, or if the ignition
switch is turned from ON to ACC or OFF during the check
mode, the DTCs and freezed frame data will be erased.
3.
INSPECT DIAGNOSIS (Check Mode)
HINT:
Hand-held tester only:
Compared to the normal mode, the check mode has an in-
creased sensitivity to detect malfunctions.
Furthermore, the same diagnostic items which are detected in
the normal mode can also be detected in the check mode.
(a)
Check the DTC.
(1)
Initial conditions.
Battery positive voltage 11 V or more
Throttle valve fully closed
Transmission in P or N position
A/C switched OFF
(2)
Turn the ignition switch OFF.
(3)
Prepare the hand-held tester.
(4)
Connect the hand-held tester to the DLC3 at the
lower center of the instrument panel.
(5)
Turn the ignition switch ON and push the hand-held
tester switch ON.
(6)
Switch the hand-held tester from the normal mode
to the check mode (Check that the MIL flashes.).