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:
| • | The Engine Controls Diagnostic Check is completed. |
| • | No diagnostic trouble codes (DTCs) |
| • | On-board diagnostics are functioning properly. |
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: Eng 1 List
Eng 2: Eng 2 List
FF/FR: Freeze Frame/Failure Records
FS: FS Data
Scan Tool Parameter | Data List | Units Displayed | Typical Data Value |
|---|---|---|---|
Operating Conditions: Engine Idling/Lower Radiator Hose Hot/Closed Throttle/Park or Neutral/Accessories OFF | |||
A/C Clutch Feedback Signal | Eng 1 | Relay ON/OFF | Relay OFF |
A/C Relay Command | Eng 1 | ON/OFF | Off |
A/C Compressor Cycling Switch | Eng 1 | Low Pressure/Normal | Normal |
A/C Request Signal | Eng 1 | Yes/No | No |
Actual Fuel Rail Pressure | All | MPa/PSI | 37-40 MPa (5,200-5,800 PSI) |
APP Indicated Angle | All | % | 0.0 |
APP Sensor 1 | Eng 1, FF/FR | Volts |
|
APP Sensor 2 | Eng 1, FF/FR | Volts |
|
APP Sensor 3 | Eng 1, FF/FR | Volts |
|
Auxiliary Gen L-Terminal Signal | Eng 1 | Voltage/No Voltage | Voltage |
Balancing Rate Cyl 1-8 | Eng 2, FF/FR | mm³ | -4.0 to +4.0 |
BARO | Eng 1, FF/FR | kPa | 65-104 (Varies with altitude) |
Battery Voltage | Eng 1 | Volts | 12-14 (Accuracy +/- 0.4 Volts) |
Boost Pressure Sensor | Eng 1, FF/FR | kPa/PSI | 60-170 kPa (8-24 PSI) (All RPM) |
Calculated Fuel Rate | All | mm³ | 7-9 |
CAM Reference Signal Missed | Eng 1 | Counts | 0 |
CAM Signal Present | Eng 1 | YES/NO | YES |
Check Trans Lamp | Eng 1 | ON/OFF | OFF |
CKP Sensor Pulses Missed | Eng 1 | Counts | 0 |
Clutch Pedal Switch | Eng 1 | Applied/Released | Released |
Crank Signal Present | Eng 1 | YES/NO | YES |
Cruise Control Active | Eng 1 | Yes/No | No |
Cruise ON/OFF Switch | Eng 1 | ON/OFF | OFF |
Cruise/Resume/Accel Switch | Eng 1 | ON/OFF | OFF |
Cruise Set/Coast Switch | Eng 1 | ON/OFF | OFF |
Desired FRP Regulator | FS | mA | 1,200-1,400 |
Desired Fuel Rail Pressure | All | MPa/PSI | 37-40 MPa (5,200-5,800 PSI) |
Desired Idle Speed | Eng 1, FF/FR | RPM | 630-700 |
DTC Set This Ignition | Eng 1 | Yes/No | No |
ECT Sensor | Eng 1, FS, FF/FR | °C/°F | 85-105°C /185-220°F (varies with temperature) |
Engine Oil Level Switch | Eng 1 | OK/Fault | OK |
Engine Oil Life Remaining | Eng 1 | % | varies |
Engine Run Time | All | Hrs/Mins/Sec | Varies with engine run time |
Engine Speed | All | RPM | +/-100 RPM from desired |
Exhaust Brake Relay Command | Eng 1 | ON/OFF | OFF |
Exhaust Brake Switch | Eng 1 | ON/OFF | OFF |
Fail Counter | FR | counts | Varies |
FRP Regulator Command | All | % | 40-50 |
FRP Regulator Command | FS | mA | Varies |
FRP Regulator Relay | Eng 1 | ON/OFF | ON |
FRP Regulator Fuel Flow Command | FS | mm³ | Varies |
Fuel Level Sensor | FS | % | Varies |
Fuel Level Sensor | FS | Volts | Varies |
Fuel Level Sensor Rear Tank | FS | Volts | Varies |
Fuel Temperature Sensor | All | °C/°F | 10-90°C/50-194°F |
GEN L-Terminal Signal | Eng 1 | Voltage/No Voltage | Voltage |
Glow Plug Feed Back Signal | Eng 1, FF/FR | Volts | 0.0-0.2 |
Glow Plug Relay | Eng 1 | ON/OFF | OFF |
Glow Plug System Type | Eng 1 | Federal/California | Federal |
High Idle Switch | Eng 1 | ON/OFF | OFF |
IAT Sensor | Eng 1, FF/FR | °C/°F | 10-90°C/50-194°F (temperatures may increase under heavy engine loads) |
Ignition 1 Signal | Eng 1, FF/FR | Volts | 12-14 (accuracy +/-0.4 volts) |
Injector 1-8 Command | Eng 2, FF/FR | ms | 0.3-0.5 |
Intake Air Heater Feedback Signal | Eng 1 | Relay ON/Relay OFF | Relay OFF |
Intake Air Heater | Eng 1 | Volts | 0.0 |
Intake Air Heater Relay Command | Eng 1 | ON/OFF | OFF |
Low Coolant Level | Eng 1 | Yes/No | No |
MAF Sensor | Eng 1, FS, FF/FR | g/s | 45-50 |
Main Injection Command | FS | microseconds | Varies |
Main Injection Fuel Rate | FS | mm³ | 6.5-8.5 |
Main Injection Timing | All | degrees | Varies |
MIL Command | Eng 1 | ON/OFF | OFF |
Mileage Since First Failure | FF/FR | Miles/Km | varies |
Mileage Since Last Failure | FF/FR | Miles/Km | varies |
Not Run Counter | FR | counts | Varies |
Pass Counter | FR | counts | Varies |
PCM in VTD Fail Enable | Eng 1 | Yes/No | No |
PCM Reset | Eng 1 | Yes/No | No |
Pilot Injection Command | FS | microseconds | Varies |
Pilot Injection Fuel Rate | FS | mm³ | 0.8-1.0 |
Pilot Injection Timing | FS | degrees | Varies |
PNP Switch | Eng 1 | In Gear/Park/Neutral | Park/Neutral |
PTO Enable | Eng 1 | YES/NO | NO |
PTO Engage Relay Command | Eng 1 | ON/OFF | OFF |
PTO Engine Shutdown Signal | Eng 1 | YES/NO | NO |
PTO Feedback Signal | Eng 1 | Relay ON/Relay OFF | Relay OFF |
Start up ECT | Eng 1, FF/FR | °C/°F | Varies (ECT at time of engine startup) |
Stoplamp Pedal Switch | Eng 1 | Applied/Released | Released |
TCC/Cruise Brake Pedal Switch | Eng 1 | Applied/Released | Released |
Vehicle Speed Sensor | Eng 1, FS, FF/FR | mph/km/h | 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 |
Wait To Start | Eng 1 | ON/OFF | OFF |
Water In Fuel | Eng 1 | ON/OFF | OFF |
