Toyota Celica 2005 Repair Manual page 666

6 Change normal spark plug and check spark of misfiring cylinder.
NG
7 Check for open and short in harness and connector between ignition coil and
ECM (See page IN−30).
NG
Repair or replace harness or connector.
2005 CELICA (RM1131U)
DIAGNOSTICS − ENGINE (2ZZ−GE)
PREPARATION:
(a) Change to the normal spark plug.
(1) Remove the spark plug that may be faulty from the
ignition coil assembly.
(2) Install another spark plug to the ignition coil assem-
bly.
(b) Disconnect the injector connector.
(c) Ground the spark plug.
CHECK:
A10094
Check if spark occurs while the engine is being cranked.
CAUTION:
Always disconnect each injector connector.
NOTICE:
Do not crank the engine for more than 2 seconds.
OK:
Spark jumps across electrode gap.
OK Replace spark plug.
OK Replace ignition coil with igniter, then confirm
that there is no misfire.
665
DI−467