If this concern is encountered, inspect
circuits 406 (IC Control for 2/3 Coil) and 423 (IC Control for 1/4 Coil) for an
intermittent short to ground or poor connection on either end. Depending on the
model, these circuits may short on the AC lines near the AC compressor, on the
transmission mount, or on the transmission lines where they enter the
transmission. If there is no problem found with these circuits, inspect the
ignition control module ground to ensure that it is clean and tight.
If there is no problem found after performing
the suggestions above and the SI diagnostics lead to ignition module
replacement, replace the ignition module as directed but also replace all of the
spark plugs and clean the ignition module ground to possibly prevent future
ignition module damage. ( use OEM plugs) Before installing the new ignition module. If the spark plugs
are worn sightly or have a high resistance They will cause the ignition module
to repeatedly fail.
Please follow this diagnostic or repair process thoroughly and complete each step. If the condition exhibited is resolved without completing every step, the remaining steps do not need to be performed.
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