PS03: ISC Motor

Idle Speed Control Motor. The ISC motor may be overridden under certain conditions using PS03. When PS03 is first selected, the display will alternate between "--" for one second and "50" for three seconds to indicate normal PCM control of the ISC motor. This will continue until an ISC extend or retract override is attempted. If at any point an override is attempted without meeting the conditions stated below," == " will be displayed.

• ISC Extend
  
  The ISC motor may be extended using the WARMER button only under the following conditions:
  1. Engine not running
  2. Transaxle is in Park or Neutral
  3. Vehicle speed is 0
  4. Throttle Position Switch is closed or throttle angle (PD01) is less than 1.44°

When these conditions are met and the WARMER button is pressed, the ISC motor will extend as far as it can and "99" will be displayed.

• ISC Retract
  
  The ISC motor may be retracted using the COOLER button only under the following conditions:
  1. Vehicle speed is 0
  2. Transaxle is in Park or Neutral

When these conditions are met and the COOLER button is pressed, the ISC motor will retract until the throttle switch opens and "00" will be displayed. While in the ISC retract override, the EGR solenoid and the generator will be commanded "OFF" and ignition control will try to maintain at least 450 RPM.