ON-VEHICLE SERVICE
KNOCK CONTROL SYSTEM CHECK
M11603000018USA0000010000
Check the knock sensor circuit if diagnostic trouble code, No.
P0326, P0327, P0328, P0331, P0332 or P0333 is shown.
Refer to GROUP 13A, Multiport Fuel Injection (MFI) - Multiport
Fuel Injection (MFI) Diagnosis - Diagnostic Trouble Code
Chart P.13Ab-44.
IGNITION COIL CHECK
M11603000012USA0000010000
NOTE:
It is impossible to carry out an easy check using a
circuit tester because a diode and so on are integrated into
the inside circuit of this ignition coil. Accordingly,
check the ignition coil in the following procedure.
1.
Make sure the diagnosis codes are not stored using M.U.T.-
III. If stored, record the code No. Carry out the troubleshooting
for the stored codes and solve the problems even if not related
to the ignition.
2.
Disconnect the injector connectors on all of the cylinders.
3.
Disconnect the ignition coil connector.
4.
Remove the ignition coil and install a new spark plug to the
ignition coil.
5.
Connect the ignition coil connector.
6.
Ground the side electrode of the spark plug and crank the
engine.
7.
Check that spark is produced between the electrodes of the
spark plug.
8.
If the spark plug has weak spark or no spark, carry out the
same check using a new ignition coil. If there are strong spark
on this check with a new ignition coil, it becomes clear there
is a problem with the ignition coil. Replace the ignition coil with
a new one. If there is no spark on this check with a new ignition
coil, there is probably a problem with the ignition circuit. Check
the ignition circuit.
9.
Using M.U.T.-III, make sure whether the diagnosis codes are
stored due to the check, or not. Except the codes stored in
Step 1, clear the codes all together if they are present. And
then, carry out the troubleshooting about the codes recorded.
IGNITION SYSTEM
16c-3
ON-VEHICLE SERVICE