Limited Operation Strategy (LOS) Mode

The LOS mode functions during engine start, or upon failure of the ECA detected by a "safeguard" circuit in the ECA. This mode allows continued vehicle operation (with reduced performance) until repairs can be made. In this mode the actuator functions are set as follows:

• Ignition Module Timing: Minimum spark advance (10° BTDC).
• Feedback Carburetor Actuator (FBCA): Locked at last controlled position. On startup, the FBCA is driven full rich and then slightly lean.
• Exhaust Gas Recirculation (EGR): No EGR.
• Thermactor Air (TAB): By-Pass (dump) position.
• Canister Purge (CANP): Canister sealed, no purge.
• Throttle Kicker (TK): Low RPM idle.