Mitsubishi 1989-1993 GALANT Service Manual page 277

FUEL SYSTEM <SOHC-16 VALVE> -
Diagnostic
test mode
TSB Revision
Service Adjustment Procedures
control terminal of the data link connector.
(4) Remove the waterproof female connector from the ignition
timing adjustment connector.
(5) Use a jumper wire to ground the ignition timing adjustment
terminal.
(6) Start the engine and run at idle.
(7) Check the basic idle speed. If the scan tool is used, select
item No.22 and read the idle speed.
Standard value: 750 *50 rpm
NOTE
1. The engine speed may be 20 to. 100 rpm lower than
indicated above for a new vehicle (drive approximately
500 km (300 miles) or less), but no adjustment is
necessary.
2. If the engine stalls or the rpm is low even though the
vehicle has been driven approximately 500 km (300
miles) or more, it is probable that deposits are adhered to
the throttle valve, so'clean it. (Refer to P.13-136.)
(8) If not within the standard value range, turn the engine
speed adjusting screw to make the necessary adjustment.
NOTE
If the idling speed is higher than the standard value range
even when the RPM adjusting screw is fully closed,
whether or not there is any indication that the fixed SAS
has been moved. If there is an indication that it has been
moved, adjust the fixed SAS. If there are no indications that
it has been moved, it is possible that there is leakage as a
result of deterioration of the fast idle air valve (FIAV), and, if
so the throttle body should be replaced.
(9) Switch OFF the ignition switch.
from the diagnostic test mode control terminal.
(11) Disconnect the jumper wire from the ignition timing adjust-
ment terminal and return the connector to its original condi-
tion.
(12) Start the engine again and let it run at idle speed for about ten
minutes; check to be sure that the idling condition is normal.
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