Toyota Celica 2005 Repair Manual page 490

TC Terminal Circuit
CIRCUIT DESCRIPTION
Terminal TC and CG are located in the DLC3. When connecting these terminals, DTCs in normal mode or
test mode can be read through the MIL flashing in the combination meter.
WIRING DIAGRAM
D1
DLC3
TC
CG
INSPECTION PROCEDURE
HINT:
Even though terminal TC is not connected with terminal CG, the MIL blinks.
S
For the above phenomenon, an open or short in the wire harness, or malfunction inside the ECM is
S
the likely cause.
1 Check voltage between terminals TC and CG of DLC3.
ON
CG
TC
NG
2005 CELICA (RM1131U)
DIAGNOSTICS
P−B
13
W−B
4
A
J3
J/C
IE
(−)
(+)
F08565
− ENGINE (1ZZ−FE)
Instrument Panel J/B
4 8
IF IB
PREPARATION:
Turn the ignition switch ON.
CHECK:
Measure the voltage between terminals TC and CG of the
DLC3.
OK:
Voltage: 9 to 14 V
OK Replace ECM (See page SF−78).
489
ECM
5
P−B
E3 TC
DI−291
DI7DL−24
F09790