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Scan Tool Parameter
Operating Conditions: Engine Idling/Radiator Hose Hot/Park or Neutral/Closed Loop/Accessories Off
5-Volt Reference 1, 2, or 3
Circuit Status
A/C Disengage 1-8 History
A/C High Side Pressure
A/C High Side Pressure
A/C Off for WOT
A/C Pressure Disable
A/C Relay Circuit Status
A/C Relay Command
A/C Request Signal
Air Flow Calculated
Air Fuel Ratio
Ambient Air Temperature
APP Indicated Angle
APP Sensors
APP Sensor 1
APP Sensor 2
APP Sensor 1 and 2
BARO
BARO
Brake Pedal Signal Status
Calculated ECT - Closed
Loop Fuel Control
Calculated ECT -
Thermostat Diagnosis
Calc. TWC Temp. Bank 1
and 2 Sensor 1 and 2
Catalytic Converter
Protection Active
Catalyst Monitor Complete
This Ignition
Catalyst Monitor Enabled
this Ignition
CKP Resync Counter
CKP Active Counter
CMP Sensor
Cold Startup
Crank Request Signal
Cruise Control Active
Cruise Control Active
Cruise Disengage 1-8
History
Cruise Inhibited
Cruise On/Off Switch
Cruise Resume/Accel.
Switch
Cruise Set/Coast Switch
Cylinder 1-6 IC Circuit
Status
Cylinder 1-6 Injector Circuit
Status
Cylinder 1-6 Knock Retard
Decel. Fuel Cutoff
Data List
EVAP, IGN, IND, TAC, CH
Cooling/HVAC
Cooling/HVAC
Cooling/HVAC
Cooling/HVAC
Cooling/HVAC
Cooling/HVAC
Eng, TAC, CH, IND, MF
Cooling/HVAC
ENG, EVAP, FT, HO2S, IND,
MF, TAC
ENG, FT, HO2S, IND
ENG, EVAP
CMP,CT, Eng, ET, EVAP, FT,
HO2S, Ign, IND, MF, TAC,
Trans
TAC
TAC
TAC
TAC
CMP, Eng, EVAP, FT, HO2S,
Ign, IM, IND, Trans
IND
CT, Eng, ET, TAC, Trans
CH
CH
FT, MF
FT, HO2S
IM
IM
Ign
Ign
CMP, IGN, MF
ENG, EVAP, IM
ET
ENG, TAC
CT, Eng, IPC, TAC,
CT
CT
CT
CT
CT
MF
MF
Ign
Eng, FT, HO2S
Engine General Information and Diagnosis:
Parameter Range/Units
OK/Fault
Reason for A/C
Disengagement
0-5 Volts
kPa/psi
Yes/No
Yes/No
OK/Fault/Indeterminate
On/Off
Yes/No
g/s
14.7:1
°C/°F
0-100%
0-100%
0.9-4.5 Volts
0.40-2.25 Volts
Agree/Disagree
65-104 kPa (8-16 psi)
Volts
Valid/Invalid
−39 to +40°C (−38 to
+104°F)
−39 to +140°C (−38 to
+284°F)
Temperature
Yes/No
Yes/No
Yes/No
Counts
Counts
RPM
YES/NO
Yes/No
Active/Inactive
Yes/No
Reason
Yes/No
On/Off
ON/OFF
ON/OFF
OK/Fault/Indeterminate
OK/Fault/Indeterminate
Degree
Active/Inactive
1A-42
Typical Data Values
OK
Varies
Varies
Varies
No
No
OK
Off
No
--
Varies
Varies
0%
0%
1 Volt
0.4 Volt
Agree
Varies with altitude
Varies
Valid
40°C (104°F)
89°C (192°F)
Varies
No
Varies
Varies
0 Counts
0 Counts
Engine idle speed
Varies
No
Inactive
No
Varies
No
Off
OFF
OFF
OK
OK
0 Degrees
Inactive
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Troubleshooting
