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Home >> Chevrolet >> 2003 >> SSR Base >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - 5.3L (Diagnostic Information & Procedures) >> Diagnostic Information & Procedures >> Scan Tool Data List

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 given 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 is determined:

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

IMPORTANT: A scan tool that displays faulty data should not be used. The scan tool problem should be reported to the manufacturer. Use of a faulty scan tool can result in misdiagnosis and unnecessary parts replacement.

Only the parameters listed below are referenced in this service manual 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 can be located on the scan tool. Refer to 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 of the data lists indicated below.

Eng 1

Engine Data 1 List

Eng 2

Engine Data 2 List

EE

Enhanced Evaporative Emission (EVAP) Data

FF/FR

Freeze Frame/Failure Records

FT

Fuel Trim Data List

HO2S

Heated Oxygen Sensor Data List

MF

Misfire Data List

TAC

Throttle Actuator Control (TAC) Data List

CC

Cruise Control Data List

Scan Tool Data List

Scan Tool Parameter Data List Parameter Range/Units Typical Data Values
Engine Idling/Radiator Hose Hot/Closed Throttle/Park or Neutral/Closed Loop/Accessories Off
A/C Relay Command Eng 1, 2, MF On/Off Off
A/C Request Signal Eng 2 Yes/No No
A/C Pressure Sensor Eng 2 PSI Varies
A/C Pressure Sensor Eng 2 Volts Varies
APP Average TAC 0-100% 0%
APP Indicated Angle Eng 1, Eng 2, EE, FT, TAC 0-100% 0%
APP Sensor 1 TAC 0-5.0 Volts 0.4-0.9 Volts
APP Sensor 2 TAC 5.0-0 Volts 4.5-4.1 Volts
APP Sensor 1 TAC 0-100% 0%
APP Sensor 2 TAC 0-100% 0%
APP Sensor 1 and 2 TAC Agree/Disagree Agree
BARO Eng 1, EE, FT, FF/FR kPa/volts 65-104 kPa/3.5-4.9 Volts Varies w/Altitude
Clutch Pedal Switch
(Manual Transmission only)
Eng 1, EGR Depressed/Released Released
CMP Sensor-High to Low Eng 2 Counts Varies
CMP Sensor-Low to High Eng 2 Counts Varies
Coolant Level Switch Eng 2 OK/Low OK
Cruise Control Active Eng 1, TAC, CC Yes/No No
Cruise Disengage 1 History CC Varies Varies
Cruise Disengage 2 History CC Varies Varies
Cruise Disengage 3 History CC Varies Varies
Cruise Disengage 4 History CC Varies Varies
Cruise Disengage 5 History CC Varies Varies
Cruise Disengage 6 History CC Varies Varies
Cruise Disengage 7 History CC Varies Varies
Cruise Disengage 8 History CC Varies Varies
Cruise Inhibit Signal Command Eng 1 Varies Varies
Cruise On/Off Switch CC, TAC On/Off Off
Cruise Control Release Brake Pedal Switch CC On/Off Off
Cruise Resume/Accel Switch CC, TAC On/Off Off
Cruise Set/Coast Switch CC, TAC On/Off Off
Current Gear Eng 1, 2, FT, FF/FR 0-4 1
Cycles of Misfire Data MF 0-100 Counts Varies
Desired IAC Airflow Eng 1 0-64 g/s Varies
Desired Idle Speed Eng 1, Eng 2, TAC, EE RPM PCM Controlled
DTC Set This Ignition Eng 1, 2, CC, EE, FT Yes/No No
ECT Sensor Eng 1, Eng 2, EE, FT, MF, FF/FR, HO2S -39 to +140°C (-38 to +284°F) 88-105°C (190-221°F)
Engine Load All 0-100% 1-4% @ Idle
7-9% @ 2500 RPM
Engine Oil Level Switch Eng 2 OK/Low OK
Engine Oil Life Remaining Eng 2 0-100% Varies
Engine Oil Pressure Sensor Eng 2 Volts 1.47-1.51 Volts
Engine Run Time All Hrs, Min, Sec Varies
Engine Speed All 0-10,000 RPM 500-700 RPM
EVAP Purge Solenoid Command Eng 1, EE, FT 0-100% 10-25%
EVAP Vent Solenoid Command Eng 1, EE, FT Not Venting/Venting Venting
Fail Counter FF, FR Counts Varies
Fuel Level Sensor Eng 1, EE 0-5 volts 0.7-2.5 volts
Fuel Tank Level Remaining EE Gallon/Liter Varies
Fuel Tank Level Remaining EE 0-100% Varies
Fuel Tank Pressure Sensor Eng 1, EE -32.7 to +14.0 mm/Hg (-17.5 to +7.5 in/H2O) Varies
Fuel Tank Pressure Sensor EE 0-5.0 volts Varies
Fuel Tank Rated Capacity EE 98 Liters (25.9 Gallons) or 128 Liters (34 Gallons) Varies with fuel tank option
Fuel Trim Cell Eng 1, EE, FT 0-23 16, 17
Fuel Trim Learn Eng 1, EE, FT Enabled/Disabled Enabled, May Toggle
Generator F Terminal Signal Eng 2 Percent Varies
Generator L Terminal Signal Command Eng 2 On/Off On
HO2S Bank 1 Sensor 1 Eng 1, EE, FT Millivolts 10-1,000 mV and Varying
HO2S Bank 1 Sensor 2 Eng 1, FT Millivolts 10-1,000 mV and Varying
HO2S Bank 2 Sensor 1 Eng 1, EE, FT Millivolts 10-1,000 mV and Varying
HO2S Bank 2 Sensor 2 Eng 1, FT Millivolts 10-1,000 mV and Varying
IAT Sensor Eng 1, Eng 2, EE, EGR, FT -39 to +140°C (-38 to +284°F) 35°C (91°F) Depends on ambient temperature
Ignition 1 Signal Eng 1, Eng 2, CC, EE, EGR, FT, TAC 0-25 Volts 11.5-14.5 Volts
Inj. PWM Bank 1 Average Eng 2, FT, FF/FR, MF Milliseconds 2-6
Inj. PWM Bank 2 Average Eng 2, FT, FF/FR, MF Milliseconds 2-6
Knock Retard Eng 1 0.0-16°
Long Term FT Bank 1 Eng 1, Eng 2, EE, FT, FF/FR Percentage Near 0%
Long Term FT Bank 2 Eng 1, Eng 2, EE, FT, FF/FR Percentage Near 0%
Loop Status Eng 1, 2, EE, FT, FF/FR Open/Closed Closed
Low Oil Lamp Command Eng 2 On/Off Off
MAF Sensor Eng 1, 2, FT, MF, EE, TAC Grams Per Seconds (g/s) 1-9 g/s @ Idle, depends on altitude
15-26 g/s @ 2,500 RPM, depends on altitude
MAF Sensor Eng 2 0-31,999 Hz 2,000-3,000 Hz
MAP Sensor Eng 1, 2, FT, MF, EE, TAC kPa 20-48 kPa
MAP Sensor Eng 1, Eng 2 Volts 1.0-2.0 volts
Varies with altitude
MIL Command Eng 2 Off/On Off
Mileage Since DTC Cleared Eng 2 kilometers/miles Varies
Misfire Counter Status MF Counts Normal@KOEO
Misfire Current Cyl. 1-8 MF 0-200 Counts 0
Misfire History Cyl. 1-8 MF 0-65,535 Counts 0
PCM Reset Eng 1, Eng 2, EE, FT Yes/No No
PCM/VCM in VTD Fail Enable Eng 1 Yes/No No
Power Enrichment Eng 1 Active/Inactive Inactive
Reduced Engine Power Eng 1, TAC Active/Inactive Inactive
Short Term FT Bank 1 Eng 1, Eng 2, EE, FT Percentage Near 0%
Short Term FT Bank 2 Eng 1, Eng 2, EE, FT Percentage Near 0%
Spark Eng 1, Eng 2, FT, MF Degrees 15°-20°
Start Up ECT Eng 2, EE, FT F°/C° Varies
Stop Lamp Pedal Switch Eng 1, 2, TAC, FF/FR, CC Applied/Released Released
TAC/PCM Comm Signal CC, TAC Yes/No Yes
TCC Enable Solenoid Command Eng 1, Eng 2, MF, CC On/Off Off
TCC PWM Solenoid Command Eng 2 On/Off Off
TFP Switch Eng 2, FT, CC Transmission Gear Position Varies
TP Desired Angle Eng 1, Eng 2, EE, TAC, CC 0-100% 0%
TP Indicated Angle All 0-100% 0%
TP Sensor 1 TAC 0-5.0 volts 0.4-0.9 volts
TP Sensor 2 TAC 5.0-0 volts 4.8-4.3 volts
TP Sensor 1 TAC 0-100% 0%
TP Sensor 2 TAC 100-0% 100%
TP Sensors TAC Agree/Disagree Agree
Torque Delivered Signal Eng 2, TAC ft lbs/N.m 0 ft lbs@KOEO
Torque Request Signal Eng 2, TAC ft lbs/N.m 349 ft lbs@KOEO
Traction Control Signal Eng 2, CC, TAC Active/Inactive Inactive
TR Sw Eng 2, CC, FT Transmission Gear Position Varies
Vehicle Speed Sensor Eng 1, 2, FT, CC, TAC, MF, EE km/h
mph
0
VTD Auto Learn Timer Eng 1 Active/Inactive Inactive
VTD Fuel Disable Eng 1 Active/Inactive Inactive
VTD Fuel Disable Until Ign. Off Eng 1 Yes/No No
Warm-Ups w/o Emission Faults Eng 2 0-255 Counts Varies
Warm-Ups w/o Non-Emission Faults Eng 2 0-255 Counts Varies