PS03: Idle Speed Control (ISC) Motor

ISC motor may be overridden under certain conditions using PS03. When PS03 is first selected, display will alternate between "--" for one second and "50" for 3 seconds to indicate normal PCM control of ISC motor. This will continue until ISC extend or retract override is attempted.

ISC motor may be extended using the WARMER button only when following conditions are met:

• Engine not running
• Vehicle speed at zero
• Transaxle in Park or Neutral
• TP sensor closed or throttle angle (PD01) at less than 1.44 degrees.

When these conditions are met, ISC will extend as far as it can and "99" will be displayed.

ISC motor may be retracted using the COLDER button only when vehicle speed is zero and transaxle is in Park or Neutral. When these conditions are met, ISC will retract until throttle switch opens and "00" will be displayed. While in this override, EGR solenoid and alternator will be commanded off and ignition control will try to maintain at least 450 RPM.