Fleetwood FWD V8-300 4.9L (1993)
Idle Speed/Throttle Actuator - Electronic: Adjustments
ISC MAXIMUM EXTENSION CHECK AND ADJUSTMENT
1. With the key "ON" and engine "OFF" select the ISC motor override E.5.3, Press the "WARMER" button on the ECC. The fuel data center should
display E.5.3 and "99" alternately indicating that the override function has started. The ISC will extend to the maximum extend position.
2. With the ISC at maximum extension the TPS voltage should be between 1.15 and 1.20 volts. If the TPS is not within this range, adjust the ISC
plunger as follows:
^
TPS below 1.15 volts
-
Adjust the ISC plunger out by turning the plunger counterclockwise until the TPS parameter reads 1.18 volts.
^
TPS above 1.20 volts
-
Adjust the ISC plunger in by turning the plunger clockwise until the TPS parameter reads 1.18 volts
3. Recheck the max extend setting, Press the "COOLER" button to retract the ISC plunger. Wait 5 seconds. Press the "WARMER" button and read
the TPS voltage. Readjust the ISC plunger if necessary.