Toyota Celica 2005 Repair Manual page 368

6 Change normal spark plug and check spark of misfiring cylinder.
PREPARATION:
(a) Change to the normal spark plug.
(1) Remove the spark plug that may be faulty from the ignition coil assembly.
(2) Install the spark plug to the ignition coil assembly.
(b) Disconnect the injector connector.
(c) Ground the spark plug.
CHECK:
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.
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 (1ZZ−FE)
OK Replace spark plug.
OK Replace ignition coil with igniter, then confirm
that there is no misfire.
367
DI−169