GM Service Manual Online
For 1990-2009 cars only

Powertrain Control Module (PCM) 3.8 L

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

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

°C/°F

Varies

Engine Hot Lamp Circuit Status

ODM

OK/Fault/Invalid State

OK

Engine Hot Lamp

ENG2

On/Off

Off

Fan High Speed

ENG2

On/Off

Off

Fan Low Speed

ENG2

On/Off

Off

FC Relay 1 Circuit Status

ODM

Fault/OK

OK

FC Relay 2 and 3 Circuit Status

ODM

Fault/OK

OK