GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Cadillac 🢒 2003 🢒 DeVille 🢒 Engine 🢒 Engine Cooling 🢒 Scan Tool Data List
Table 1: Instrument Panel Cluster (IPC)
Table 2: Powertrain Control Module (PCM) 4.6L LD8 and L37

Instrument Panel Cluster (IPC)

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

Ignition ON/Engine OFF

Low Coolant Level

Inputs

OK/Low

OK

Powertrain Control Module (PCM) 4.6L LD8 and L37

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 93°C (200°F)

ECT

ALL

°C/°F

Varies

FC Relay 1 Commanded

Eng 2, Eng 3

On/Off

Fan Off

FC Relay 2 and S/P Commanded

Eng 2, Eng 3

On/Off

Fan Off