Fuel Control: Cruise

When engine is at operating temperature, this is a closed loop mode. Using information from A/C switch, battery voltage, CMP sensor, CKP sensor, ECT sensor, IAT sensor and MAP sensor. PCM also monitors A/C request and P/N switch (A/T only), TP sensor and VSS signals for fuel calculation. PCM monitors HO2S and adjusts air/fuel ratio as needed. PCM controls engine idle speed through IAC motor. PCM controls spark advance as necessary.