Enable Criteria
- Barometric pressure is greater than 65 kPa.
- Engine coolant temperature is 203-212°F (95-100°C).
- Intake air temperature is 59-167°F (15-75°C).
- Engine in closed-loop fuel control.
- Engine has run for 6-8 minutes off idle in order to initiate test.
- Battery voltage is 10-18 volts.