LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Chevrolet >> 2004 >> Epica LS >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - 2.5L (LBK) - Diagnostic Information And Procedures >> Scan Tool Data List
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Scan Tool Data List

The Engine Scan Tool Data List contains all engine related parameters that are available on the scan tool. The list is arranged in alphabetical order. A parameter may appear in any one of the data lists, and in some cases may appear more than once, or in more than one data list in order to group certain related parameters together.

Use the Engine Scan Tool Data List only after the following conditions are determined:

Scan tool values from an engine that is operating correctly may be used for comparison with the engine you are diagnosing. The Engine Scan Tool Data List represents the values that would be seen on a normal operating engine.

IMPORTANT: Do not use a scan tool that displays faulty data. The scan tool concern should be reported to the manufacturer. Use of a faulty scan tool may result in misdiagnosis and unnecessary parts replacement.

Only the parameters listed below are referenced in this service information for use in diagnosis. If all values are within the typical range described below, refer to Symptoms - Engine Controls for diagnosis.

The column labeled Data List indicates where a parameter is located on the scan tool. Review the scan tool operating manual for the exact locations of the data lists. The following is a description of each term listed:

All

The Parameter is in all data lists indicated below.

Eng 1

Engine Data 1

Eng 2

Engine Data 2

Eng 3

Engine Data 3

EVAP

EVAP Data

HO2S

HO2S Data

Scan Tool Parameter Data List Parameter Range/Units Typical Data Values
Engine Idling/Radiator Hose Hot/Park or Neutral/Closed Loop/Accessories Off
A/C High Side Pressure Sensor Eng 2 0-5 Volts Varies
A/C High Side Pressure Sensor Eng 2, 3 kPa/psi Varies
A/C Relay Command Eng 3 On/Off Off
A/C Request Eng 3 Yes/No No
BARO Eng 2, EVAP 65-104 kPa Varies with altitude
Desired Idle Speed Eng 2, EVAP 0-8,000 RPM 800 RPM
DTC Set This Ignition Eng 1 Yes/No No
ECT Sensor ALL -40° to +130°C (-40° to +266°F) Varies
ECT Sensor Eng 2 0-5 Volts Varies
EC Ignition Relay Command Eng 3 On/Off On
EGR Position Sensor Eng 2 0-5 Volts 0.6-0.75 Volts
EGR Solenoid Command Eng 2, 3 0-100% 0%
Engine Load Eng 1 0-99% 20-30% - Idle
10-20% - 2500 RPM
Engine Run Time Eng 1, Eng 2 HH:MM:SS Varies
Engine Speed ALL 0-8,000 RPM 750-825 RPM
EVAP Purge Solenoid Command (If Equipped) Eng 2, 3, EVAP 0-100% Varies
FC Relay 1 Command Eng 1 On/Off Varies
FC Relay 2 Command Eng 3 On/Off Varies
Fuel Gage Command Eng 3 0-100% Varies
Fuel Level Sensor Eng 2, 3, EVAP, H02S 0-5 Volts Varies
Fuel Level Sensor Eng 2, 3, EVAP, H02S 0-100% Varies
Fuel Pump Relay Command Eng 3 On/Off On
Fuel Tank Pressure Sensor EVAP 0-5 Volts Varies
Fuel Tank Pressure Sensor EVAP mmHg/in H2O Varies
HO2S Bank 1 and 2 Sensor 1 Eng 1, 2, EVAP, H02S 0-1,006 mV Varies 400-800 mV
HO2S Bank 1 and 2 Sensor 2 Eng 1, 2, EVAP, H02S 0-1,006 mV Varies 400-800 mV
HO2S Htr. Bn. 1 and 2 Sen. 1 Command H02S 0-100% Varies
HO2S Htr. Bn. 1 and 2 Sen. 2 Command H02S 0-100% Varies
IAT Sensor ALL -39° to +140°C (-38° to +284°F) Varies
IAT Sensor Eng 2 0-5 Volts Varies
Idle Speed Motor Position Sensor Eng 2 0-100% Varies
Idle Speed Motor Position Sensor Eng 2 0-5 Volts Varies
Idle Switch Eng 2 On/Off On
Ignition 1 Signal Eng 2, 3, EVAP, HO2S Volts 12.0-14.5 Volts
IMT Command Eng 3 On/Off Off
Injector PWM Bank 1 and 2 Average Eng 2 000.0-999.9 ms Varies
ISC Command Eng 2 0-100% Varies
Knock Sensor Eng 2 0-5 Volts Varies
Long Term FT Bank 1 and 2 Eng 1 -50% to +50% 0%
Loop Status Eng 1 Open Loop/Closed Loop Closed Loop
Loop Status Bank 1 and 2 H02S Open Loop/Closed Loop Closed Loop
LT FT Bn. 1 and 2 Cruise/Accel. H02S -50% to +50% 0%
LT FT Bn. 1 and 2 Idle/Decel H02S -50% to +50% 0%
MAF Sensor Eng 1, 2, EVAP, H02S g/s Varies
MAF Sensor Eng 2, EVAP, H02S 0-5 Volts Varies
MAP Sensor All kPa 32-40 kPa
Varies with Altitude
MAP Sensor Eng 2 0-5 Volts 1.15-1.30 Volts
MIL Command Eng 1 On/Off Off
Short Term FT Average Bank 1 and 2 H02S -50% to +50% -3% to +3%
Short Term FT Bank 1 and 2 Eng 1, HO2S -50% to +50% -3% to +3%
Spark Eng 1 -20 to +40 Degrees 2-10 Degrees
TP Sensor Eng 2, EVAP 0-5 Volts 4.0-4.5 Volts
TP Sensor ALL % 3-5 %
Transmission Gear Position Signal Eng 2, 3, H02S Park/Neutral/In Gear Park/Neutral
Vehicle Security Status (If Equipped) Eng 3 Enabled/Disabled Enabled
Vehicle Speed Sensor ALL km/h
mph
0 km/h
(0 mph)