Toyota 1 MZ–FE Manual page 496

EG2–496
INSPECTION PROCEDURE
Check spark plug and spark of misfiring cylinder.
Check voltage of ECM terminal for injector of failed cylinder.
1MZ–FE ENGINE – CIRCUIT INSPECTION
(1) Remove ignition coil (See page IG–87).
(2) Remove spark plug.
(1) Check the carbon deposits on electrode.
(2) Check electrode gap.
(1) No large carbon deposit present.
Not wet with gasoline or oil.
(2) Electrode gap: 1.1 – 1.3 mm
(0.043 – 0.051 in.)
(1) Install the spark plug to the ignition coil, and
connect the ignition coil connector.
(2) Ground the spark plug.
(3) Disconnect injector connector.
Check if spark occurs while engine is being
cranked.
NOTICE: To prevent excess fuel being injected from
the injectors during this test, don't crank
the engine for more than 5–10 seconds at a
time.
Spark jumps across electrode gap.
Replace or check ignition system
(See page IG–84).
(1) Remove glove compartment
(See page EG2–309) .
(2) Turn ignition switch ON.
Measure voltage between applicable terminal of
ECM and body ground.
Voltage: 9 – 14 V
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