Toyota Celica 2005 Repair Manual page 961

DI−760
DLC3
2005 CELICA (RM1131U)
DIAGNOSTICS
FI0534
Hand−held tester
D07259
− AUTOMATIC TRANSAXLE (U341E)
2. INSPECT DIAGNOSIS (NORMAL MODE)
(a) Check the MIL.
(1) The MIL comes on when the ignition switch is turned
ON and the engine is not running.
HINT:
If the MIL does not light up, troubleshoot the combination meter
(See page BE−2).
(2) When the engine is started, the MIL should go off.
If the lamp remains on, the diagnosis system has
detected a malfunction or abnormality in the sys-
tem.
(b) Check the DTC.
NOTICE:
Hand−held tester only: When the diagnostic system is
switched from normal mode to check mode, it erases all
DTCs and freeze frame data recorded in normal mode. So
before switching modes, always check the DTCs and
freeze frame data, and note them down.
(1) Prepare an OBD II scan tool (complying with SAE
J1978) or hand−held tester.
(2) Connect the OBD II scan tool or hand−held tester
to DLC3 at the lower of the instrument panel.
(3) Turn the ignition switch ON and turn the OBD II scan
tool or hand−held tester switch ON.
(4) Use the OBD II scan tool or hand−held tester to
check the DTCs and freeze frame data and note
them down (For operating instructions, see the
OBD II scan tool's instruction book).
(5) See page DI−781 to confirm the details of the DTCs.
NOTICE:
When simulating symptoms with an OBD II scan tool (ex-
cluding hand−held tester) to check the DTCs, use normal
mode. For codes on the DTCs chart subject to "2−trip
detection logic", turn the ignition switch off after the symp-
toms have been simulated the 1st time. Then repeat the
simulation process again. When the problem has been
simulated twice, the MIL comes on on the instrument panel
and DTCs are recorded in the ECM.
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