Specifications

Open and Closed Loop Operation:
There are 7 different modes (conditions) that are used (besides Key-ON and Key-Off mode). Here is a
table of what sensors are monitored and what determines the mode. One thing to remember, under OPEN
LOOP Operation, the O2 Sensor(s) are ignored by the PCM.
Engine Start-Up Mode (OPEN LOOP)
Battery Voltage
Coolant Temp
Crank Position
Intake Air Temp (IAT)
MAP
TPS
Starter Motor Relay
Cam Position
Engine Warm-Up Mode (OPEN LOOP)
Battery Voltage
Coolant Temp
Crank Position
Intake Air Temp (IAT)
MAP
TPS
Cam Position
Park/Neutral Safety Switch (Automatics Only)
Idle mode (Once at Operating Temp: CLOSED
LOOP)
A/C Select (if equipped)
A/C Request (if equipped)
Battery Voltage
Coolant Temp
Crank Position
Intake Air Temp (IAT)
MAP
TPS
Cam Position
O2 Sensors
Park/Neutral Safety Switch (Automatics Only)
Cruise Mode (CLOSED LOOP)
A/C Select (if equipped)
A/C Request (if equipped)
Battery Voltage
Coolant Temp
Crank Position
Intake Air Temp (IAT)
MAP
TPS
Cam Position
O2 Sensors
Park/Neutral Safety Switch (Automatics Only)
Acceleration Mode (OPEN LOOP)
A/C Select (if equipped)
A/C Request (if equipped)
Battery Voltage
Coolant Temp
Crank Position
Intake Air Temp (IAT)
MAP
TPS
Cam Position
Vehicle Speed Sensor
Park/Neutral Safety Switch (Automatics Only)
Deceleration Mode (OPEN LOOP)
A/C Select (if equipped)
A/C Request (if equipped)
Battery Voltage
Coolant Temp
Crank Position
Intake Air Temp (IAT)
MAP
TPS
Cam Position
Park/Neutral Safety Switch (Automatics Only)
Vehicle Speed Sensor
Wide Open Throttle - WOT (OPEN LOOP)
Battery Voltage
Coolant Temp
Crank Position
Intake Air Temp (IAT)
MAP
TPS
Cam Position