Fault Code 43


Description:  Ignition coil driver circuit open or shorted.
Power loss light:  Off
Limp-in mode:  None

Possible Causes

Bad connection or wiring - Check the wiring and connections between the ignition coil and the power module (or SMEC).  Clean and regrease any corroded connectors with dielectric grease and repair any shorts.

Ignition coil driver transistor failure - Replace the power module (or SMEC).

Ignition coil failure - Using an ohmmeter, measure the resistance of the primary ignition coil between the two small stud on the top of the coil. It should measure about 0 ohms.

Diagnostic Method

Trigger Parameters

- Near 0V or near 12V not detected when the coil is turned on or off, respectively

Results If Component Fails

Fault code 43 is stored and the engine will stall.
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This page is maintained by Russell W. Knize and was last updated 08/28/98. Comments? Questions? Send email.

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