Stylus L4-1588cc 1.6L DOHC (4XE1-W) (1991)
/Page-348002.png)
Figure 1
1.
Check for a white, round label marked "ECM" (Figure 1) affixed to the inside of the driver's door.
a.
If an "ECM" label is present, ECM replacement is not necessary. DO NOT continue with this Service Procedure.
b.
If an "ECM" label is not present, continue with this Service Procedure.
2.
Replace the Electronic Control Module (ECM) as follows:
a.
Disconnect the battery terminals.
b.
Remove the engine hood release and its cable.
c.
Remove the switcb bezel and cigarette lighter bezel from the instrument panel. Use care to prevent damaging the bezel tabs.
-
Disconnect all of the connectors at the rear of each bezel.
d.
Remove the knee pad as described in the appropriate Workshop Manual.
e.
Remove the ventilator vent.
f.
On Impulse models equipped with automatic transmission, remove the transmission control unit (TCM).
g.
Remove the ECM and its bracket. Inspect the part number on the removed ECM.
IMPORTANT If the ECM part number matches one of the part numbers listed in the "Parts Information" section of this Bulletin, DO NOT CONTINUE
with this campaign procedure.
Remove the two clip-type studs on the side of the ECM case.
h.
Install a new ECM (see "Parts Information" in this Bulletin), using the two clip-type studs removed from the old ECM, and the old ECM
bracket.
i.
On Impulse A/T models, reinstall the TCM.
j.
Reinstall the ventilator vent.
k.
Reinstall the knee pad as described in the appropriate Workshop Manual.
l.
Reinstall the switch bezel, cigarette lighter bezel, and their connectors.
