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For 1990-2009 cars only
Table 1: Powertrain Control Module (PCM) 3.4 Liter LA1
Table 2: Powertrain Control Module (PCM) 3.8 Liter L36

Powertrain Control Module (PCM) 3.4 Liter LA1

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

Ignition Switch in RUN/Engine running/Automatic Transmission in PARK/Air Conditioner is OFF

ECT Sensor

Eng 1, 2, EGR, EVAP, Cat, HO2S, Misfire, AIR

°C/°F

Varies

FC Relay 1 Command

Eng 2

On/Off

Varies

FC Relay 2 and 3 Command

Eng 2

On/Off

Varies

FC Relay 1 Circuit Status

ODM

Fault/OK

OK

FC Relay 2 and 3 Circuit Status

ODM

Fault/OK

OK

Powertrain Control Module (PCM) 3.8 Liter L36

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

Ignition Switch in RUN/Engine running/Automatic Transmission in PARK/Air Conditioner is OFF

ECT Sensor

Eng 1, 2, EGR, EVAP, Cat, HO2S, Misfire, AIR

°C/°F

Varies

FC Relay 1 Command

ENG2, Cat

On/Off

Varies

FC Relay 2 and 3 Command

ENG2, Cat

On/Off

Varies

FC Relay 1 Circuit Status

ODD

Fault/OK

OK

FC Relay 2 and 3 Circuit Status

ODD

Fault/OK

OK