Fault Code 42-1984
Notes: For 1984 models only
Description: Injector control circuit1 open or shorted
Power loss light: Off
Limp-in mode: None
Bad connection or wiring - Check the wiring and connections to injectors
1 and 2 in the injector harness (above the fuel rail) and between the harness
and the power module (or SMEC) and the injector contol lines between the
logic module and power module. Clean and regrease any corroded connectors
with dielectric grease and repair any shorts.
Injector driver darlington transistor failure - Check the injector
signals coming from the power module (or SMEC). They should rise
to about 12V when the injector is off and drop close to 0V when the injector
is on. If they are out of spec, you may need to replace the power
- Near 0V or near 12V not detected when the injector control driver is
turned on or off, respectively
Results If Component Fails
Fault code 42 is stored.
This page is maintained by Russell W. Knize and was last updated 08/28/98.
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Copyright © 1996-2003 Russ W. Knize