Mode 3 Bench Test Results - Temperature > 35C

O2 Sensor Throttle Switch / Idle Switch Duty Cycle Duration
State Idle Cruise WOT (%)  
Open     50  
Open >--- --->   50  
Open     50  
Open   >--- ---> 50>65  
Open     65  
Open   <--- ---< 65>50  
Open <--- ---<   50  
0.500>0.600     50>10*  
0.600 >--- --->   10  
0.600     10  
0.600>0.569     10>50  
0.500   >--- ---> 65  
0.500     65  
0.500   <--- ---< 65  
0.500 <--- ---<   65  
Legend: = Steady State condition
>------> = Transition
Open = open circuit (sensor disconnected, faulty, or cold)
Zero = Short to ground
0.500 = Volts from O2 sensor
Notes: Opening either the throttle switch or the microswitch produces the
temporary enrichment. Throttle Switch: "Cruise" is an open circuit.
"Idle" and "WOT" each produce a closed circuit to ground.
* duty cycle shift from 50 to 10 with O2 sensor voltage change

Mode 1

Mode 2

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