Use the scan tool data listed in this table for comparison after the On-Board Diagnostic system check and finding the on-board diagnostics function properly with NO diagnostic codes displayed. Not all parameters will apply to each vehicle. Use only the parameters which apply to your particular vehicle.
The Typical Scan Tool Data Values are an average of display values recorded from normally operating vehicles. The Typical Scan Tool Data Values are intended to represent what a normally functioning system would display. The values you get may vary due to a low battery charge or other reasons. But they should be very close.
Do not use a scan tool that displays erroneous data. Report the problem to the manufacturer. The use of a faulty scan tool can result in misdiagnosis and unnecessary parts replacement.
Use only the parameters listed in the tables for diagnosis. If a scan tool reads other parameters, the values are not recommended by Isuzu for use in diagnosis. For more description on the values and the use of the scan tool diagnosis the VCM inputs, refer to the applicable diagnosis. If all values are within the range illustrated, refer to Driveability Symptoms.
Engine at Operating Temp/Engine Idling in Closed Loop/Closed Throttle/Park or Neutral/Accessories OFF | |||
|---|---|---|---|
Scan Position | Data List | Units Displayed | Typical Data Value |
1-2 Solenoid | ENG 2 | ON/OFF | ON |
2-3 Solenoid | ENG 2 | ON/OFF | ON |
3-2 Downshift Sol | ENG 2 | ON/OFF | ON |
4WD | ENG 2 | Enable/Disable | Enable |
4WD Low | ENG 2 | Enable/Disable | Disable |
A/C Evaporator Sw. | ENG 2 | Open/Closed | Closed |
A/C Sec. High Pres. Sw. | ENG 2 | Open/Closed | Open |
A/C Relay | ENG 2, Misfire | ON/OFF | OFF |
A/C Request | ENG 2, Misfire | YES/NO | NO |
Actual EGR Position | ENG 1, 2, HO2S | % | 0% |
AIR Pump Relay | HO2S | Volts | OFF |
Air Fuel Ratio | ENG 1, HO2S | Ratio | 14.7:1 |
BARO | ENG 1, 2, EVAP | Volts | 4.76 Volts |
BARO | ENG 1, 2, EVAP | kPa | 101 kPa |
Brake Switch | ENG 2, HO2S, Misfire | Applied/Released | Released |
CL Since Restart | ENG 2, HO2S | YES/NO | YES |
Clutch Pedal Switch | ENG 2, Misfire | Applied/Released | Released |
CMP Retard | ENG 1 | Degrees | 0°-2° |
Cruise | ENG 2 | Enable/Disable | Disable |
Cycles of Misfire Data | Misfire | Counts | Varies |
Decel Fuel Mode | ENG 2 | Active/Inactive | Inactive |
Desired EGR Position | ENG 1, 2, HO2S | % | 0% |
Desired IAC Position | ENG 1, 2, HO2S | Counts | 18 Counts |
Desired Idle Speed | ENG 1, 2, HO2S, EVAP | RPM | 650 RPM |
DTC Set This Ignition | ENG 2, HO2S, Misfire | YES/NO | NO |
ECT | ENG 1, 2, EVAP, HO2S, Misfire | Degrees | 93°C (200°F) |
ECT Sensor | ENG 1, 2, HO2S | Volts | 2.00 volts |
EGR Duty Cycle | ENG 1, 2, HO2S | % | 0% |
EGR Sensor | ENG 1 | Volts | 0.64 Volts |
Engine Load | ENG 1, 2, EVAP, HO2S, Misfire | % | 2% idle 11%@2500 RPM |
Engine Run Time | ENG 1, 2, EVAP, HO2S, Misfire | Hr/Min/Sec | Varies |
Engine Speed | ENG 1, 2, EVAP, HO2S, Misfire | RPM | 650 RPM |
EVAP Canister Purge | ENG 1, 2, EVAP, HO2S | ON/OFF | ON |
EVAP Duty Cycle | ENG 1, 2, EVAP, HO2S | % | 17% |
EVAP Vent Solenoid | ENG 2, EVAP | Open/Closed | Open |
Excess Vacuum Test | EVAP | Pass/Not R/F | Pass |
Fuel Level | ENG 2, EVAP | % | Varies |
Fuel Level Sensor | EVAP | Volts | Varies |
Fuel Tank Pressure | EVAP | In H2O | Varies |
Fuel Tank Vacuum Pres. | ENG 2, EVAP | Volts | Varies |
Fuel Trim Cell | ENG 1, EVAP, HO2S | Cell | Cell 17 |
Fuel Trim Enable | ENG 1, 2, HO2S | YES/NO | YES |
HO2S Bank 1 Sensor 1 | HO2S | mV | Varies |
HO2S Bank 1 Sensor 2 | HO2S | mV | Varies |
HO2S Bank 1 Sensor 3 | HO2S | mV | Varies |
HO2S Bank 2 Sensor 1 | HO2S | mV | Varies |
HO2S Bank 2 Sensor 2 | HO2S | mV | Varies |
HO2S XCounts Bank 1 | HO2S | Counts | Varies |
HO2S XCounts Bank 2 | HO2S | Counts | Varies |
HVAC in Recirculation Mode | ENG 2 | YES/NO | NO |
IAC Position | ENG 1, 2, HO2S | Counts | Varies |
IAT | ENG 1, 2, EVAP | Degrees | Varies |
IAT Sensor | ENG 1 | Volts | Varies |
Ignition 1 | ENG 1, 2 | Volts | 13.5 Volts |
Ignition 1 Low | ENG 2 | YES/NO | NO |
Ignition 1 High | ENG 2 | YES/NO | NO |
Ignition 1 On | ENG 2 | YES/NO | YES |
Inj. PWM. Average B1 | ENG 2, HO2S, Misfire | ms | 3.6 ms |
Inj. PWM. Average B2 | ENG 2, HO2S, Misfire | ms | 3.6 ms |
KS Active Counter | Misfire | Counts | Varies |
KS Activity | ENG 1 | Counts | Varies |
KS Adjust Factor | EVAP, Misfire | Degrees | 0° |
Knock Retard | ENG 1 | Degrees | 0°-2° |
Knock Sensor | ENG 1 | Volts | 4.8 Volts |
KS Active Counter | Misfire | Counts | 0 |
KS Activity | ENG 1 | Counts | Varies |
Long Term FT Bank 1 | ENG 1, HO2S | Counts | 127 Counts |
Long Term FT Bank 1 | ENG 1, HO2S | % | 0% |
Long Term FT Bank 2 | ENG 1, HO2S | Counts | 127 Counts |
Long Term FT Bank 2 | ENG 1, HO2S | % | 0% |
Loop Status | ENG 1, EVAP, HO2S | Open Loop/Closed Loop | Closed Loop |
MAF | ENG 1, 2, EVAP, HO2S, Misfire | g/s | 5.2g/s |
MAF Frequency | ENG 1, 2, HO2S | Hz | 2520 Hz |
MAP | ENG 1, 2, EVAP, HO2S, Misfire | Volts | 1.22 Volts |
MAP | ENG 1, 2, EVAP, HO2S, Misfire | kPa | 33kPa |
Mileage Since DTC Cleared | ENG 2, HO2S | Km/Mi | Varies |
Misfire Current Cyl. #1 | Misfire | Counts | 0 |
Misfire Current Cyl. #2 | Misfire | Counts | 0 |
Misfire Current Cyl. #3 | Misfire | Counts | 0 |
Misfire Current Cyl. #4 | Misfire | Counts | 0 |
Misfire Current Cyl. #5 | Misfire | Counts | 0 |
Misfire Current Cyl. #6 | Misfire | Counts | 0 |
Misfire History Cyl. #1 | Misfire | Counts | 0 |
Misfire History Cyl. #2 | Misfire | Counts | 0 |
Misfire History Cyl. #3 | Misfire | Counts | 0 |
Misfire History Cyl. #4 | Misfire | Counts | 0 |
Misfire History Cyl. #5 | Misfire | Counts | 0 |
Misfire History Cyl. #6 | Misfire | Counts | 0 |
PCM/VCM in VTD Fail | ENG 2 | YES/NO | NO |
Pre HO2S | ENG 1, HO2S | Ready/Not Ready | Ready |
Post HO2S | ENG 1, HO2S | Ready/Not Ready | Ready |
Power Enrichment | ENG 2 | Active/Inactive | Inactive |
Purge Leak Test | EVAP | Pass/Not Run/Fail | Pass |
Reference Pulse Occurred | ENG 1 | YES/NO | YES |
Rich/Lean Bank 1 | ENG 1, 2, EVAP, HO2S | Rich/Lean | Lean |
Rich/Lean Bank 2 | ENG 1, 2, EVAP, HO2S, Misfire | Rich/Lean | Lean |
Short Term FT Bank 1 | ENG 1, HO2S | Counts | 127 Counts |
Short Term FT Bank 1 | ENG 1, HO2S | % | 0% |
Short Term FT Bank 2 | ENG 1, HO2S | Counts | 127 Counts |
Short Term FT Bank 2 | ENG 1, HO2S | % | 0% |
Small Leak Test | EVAP | Pass/Not Run/Fail | Pass |
Spark | ENG 1, Misfire | Degrees | 21° |
Spark Control | ENG 1 | Advance/Retard | Retard |
Start Up ECT | ENG 1, 2, EVAP, HO2S | Degrees | Varies |
Start Up IAT | ENG 1, 2, EVAP | Degrees | Varies |
TCC Enable | ENG 2, Misfire | YES/NO | NO |
TCC Duty Cycle | ENG 2, Misfire | % | 0% |
TFP SW. A/B/C | ENG 2 | (ON/OFF)/(ON/OFF)/(ON/OFF) | OFF/ON/OFF |
Total Misfire Current Count | Misfire | Counts | Varies |
Total Misfire Failures | Misfire | Counts | Varies |
Total Misfire Passes Since First Failure | Misfire | Counts | 0 |
TP Angle | ENG 1, 2, EVAP, HO2S, Misfire | % | 0% |
TP Sensor | ENG 1, 2, EVAP, HO2S | Volts | 0.55 Volts |
TR Switch | ENG 2 | Drive/Neutral | Drive |
Valid Ref. Pulse Occurred | ENG 1 | YES/NO | YES |
Vehicle Speed | ENG 1, 2, HO2S, Misfire | km/h, mph | 0 mph |
VTD Auto Learn Timer | ENG 2 | Inactive/Active | Inactive |
VTD Fuel Disable | ENG 2 | Inactive/Active | Inactive |
VTD Fuel Disable Until Ign. OFF | ENG 2 | YES/NO | NO |
Weak Vacuum Test | EVAP | Pass/Not Run/Fail | Pass |
