![](../../../img/16/ACE00805AC00ENG.png)
![](../../../img/16/ACE00807AC00ENG.png)
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1.Turn the ignition switch
to the "LOCK" (OFF) position, and then connect the
M.U.T.-III to the diagnosis connector. 2.Make sure
the diagnosis codes are not set using M.U.T.-III. If set,
record the code No. Carry out the troubleshooting for the
set codes and solve the problems even if not related to the
ignition. 3.Disconnect the injector connectors on
all of the cylinders. 4.Disconnect the ignition
coil connector. 5.Remove the ignition coil and
install a good spark plug to the ignition
coil. 6.Connect the ignition coil
connector. 7.Earth the side electrode of the spark
plug and crank the engine. 8.Check that spark is
produced between the electrodes of the spark
plug. 9.If the spark plug has weak sparks or no
sparks, carry out the same check using a good ignition coil.
If there are strong sparks on this check with a good
ignition coil, it becomes clear there is a problem with the
ignition coil. Replace the ignition coil with a new one. If
there are no sparks on this check with a good ignition coil,
there is probably a problem with the ignition circuit. Check
the ignition circuit. 10.Using M.U.T.-III, make
sure whether the diagnosis codes are set due to the check,
or not. Except the codes set in Step 1, clear the codes all
together if they are present. And then, carry out the
troubleshooting about the codes recorded. 11.Turn
the ignition switch to the "LOCK" (OFF) position, and then
disconnect the M.U.T.-III.
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