ENGINE ELECTRICAL ± Ignition System
16-30
SPARK PLUG CHECK AND CLEANING
CAUTION
1. Do not adjust the gap for iridium plugs.
2. The iridium tips may become damaged when iridium
plugs are cleaned. Accordingly, if the plugs are sooty
and need to be cleaned, use a plug cleaner in order
to protect the terminals, and do not clean for more
than 20 seconds. Tools such as wire brushes must
never be used.
3. The terminals of iridium plugs may become blackened,
even when the plugs are functioning normally.
However, the carbon which is deposited onto these
plugs burns off more easily than for conventional
spark plugs, so such blackening is not normally a
problem. Measure the insulation resistance of the
spark plug to judge if the plug is still usable or not.
(1) Check the plug gap, and replace the plug if the gap is
greater than the limit value.
Standard Valve : 0.5 ± 0.6 mm
Limit : 0.75 mm
(2) Measure the insulation resistance of the spark plug, and
replace the plug if the resistance is below the limit value.
Limit : 1 MΩ
CAMSHAFT POSITION SENSOR CHECK
Refer to GROUP 13A ± Troubleshooting.
CRANK ANGLE SENSOR CHECK
Refer to GROUP 13A ± Troubleshooting.
DETONATION SENSOR CHECK
Check the detonation sensor circuit if self-diagnosis code,
No. 31 is shown.
NOTE
For information concerning the self-diagnosis codes, refer to
GROUP 13A ± Troubleshooting .
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