Scan Tool Data List Engine Control Module
The Engine Control Module Scan Tool Data List contains all ECM 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 Control Module Scan Tool Data List only after the following is determined:
| • | The Diagnostic System Check - Vehicle is completed. |
| • | No diagnostic trouble codes (DTCs) are present. |
| • | The 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 Control Module 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.
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 1 Data List
Eng 2: Engine 2 Data List
Fuel: Fuel Data List
EGR: Exhaust Gas Recirculation (EGR) Data List
TC: TC Data List
FF/FR: Freeze Frame/Failure Records Data List
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 | |||
4WD Low Signal | Eng 1 | Enabled/Disabled | Disabled |
4WD Signal | Eng 1 | Enabled/Disabled | Disabled |
A/C Relay Command | Eng 1, EGR | ON/OFF | Off |
A/C Request Signal | Eng 1 | Yes/No | No |
A/C Sec. High Press. SW | Eng 1 | Open/Closed | Open |
Actual Fuel Rail Pressure | Eng 1, Eng 2, EGR, Fuel, FF/FR | MPa/PSI | 25-35 MPa (3,26-5,076 psi) |
APP Indicated Angle | Eng 1, Eng 2, EGR, Fuel, FF/FR | % | 0.0 |
APP Sensor 1 | Eng 1, FF/FR | Volts | 0.90-0.94 |
APP Sensor 1 | Eng 1 | % | 0% |
APP Sensor 2 | Eng 1, FF/FR | Volts | 0.40-0.50 |
APP Sensor 2 | Eng 1 | % | 0% |
Balancing Rate Cyl. 1-8 | Eng 2, FF/FR | mm³ | -4.0 to +4.0 |
BARO | Eng 1, EGR, TC, FF/FR | kPa | 65-104 (Varies with altitude) |
Calculated Fuel Rate | Eng 1, Eng 2, EGR, Fuel, FF/FR | mm³ | 5-10 |
CAM Signal Present | Eng 1 | Yes/No | Yes |
CKP Sensor Signal Present | Eng 1 | Yes/No | Yes |
Clutch Pedal Switch | Eng 1, EGR | Applied/Released | Released |
Coolant Level Switch | Eng 1 | OK/Low | OK |
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 EGR Position | EGR | % | 1-4% |
Desired FRP Regulator | Fuel | mA | 64 |
Desired Fuel Rail Pressure | Eng 1, Eng 2, Fuel, EGR | MPa/PSI | 25-35 MPa (3,626-5,076 psi) |
Desired Idle Speed | Eng 1, FF/FR | RPM | 630-700 |
Des. TC Vane Position | TC | % | 80% |
Des. TC Vane Pos. Ctrl. Solenoid | TC | Amps | 0.0 |
DTC Set This Ignition | Eng 1 | Yes/No | No |
ECM Reset | Eng 1, EGR | Yes/No | No |
ECT Sensor | Eng 1, Fuel, EGR, TC, FF/FR | °C/°F | 85-105°C/185-220°F (Varies with temperature) |
EGR Position Sensor | EGR | Volts | 1-1.1 |
EGR Position Sensor | EGR | % | 1-4 |
EGR Position Variance | EGR | % | Varies |
EGR Solenoid Command | EGR | % | 5-15 |
Engine Oil Level Switch | Eng 1 | OK/Fault | OK |
Engine Oil Life Remaining | Eng 1 | % | Varies |
Engine Oil Pressure Sensor | Fuel | kPa/PSI | Varies |
Engine Run Time | All | Hrs/Mins/Sec | Varies with engine run time |
Engine Speed | All | RPM | +/-50 RPM from desired |
Exhaust Brake Switch | Eng 1 | On/Off | Off |
Fail Counter | FR | counts | Varies |
FRP Regulator Command | Eng 1, Eng 2, Fuel, EGR, FF/FR | % | 35-45 |
FRP Regulator Command | Fuel, FF/FR | mA | Varies |
Front Axle Switch | Eng 1 | Locked/Unlocked | Unlocked |
Fuel Level Sensor | Fuel | % | Varies |
Fuel Level Sensor | Fuel | Volts | Varies with fuel level |
Fuel Level Sensor Rear | Fuel | Volts | Varies |
Fuel Temperature Sensor | Eng 1, Eng 2, Fuel, FF/FR | °C/°F | 10-90°C (50-194°F) |
GEN L Terminal Signal | Eng 1 | Voltage/No Voltage | No Voltage |
High Idle Switch-if equipped | Eng 1 | ON/OFF | OFF |
IAT Sensor 1 | Eng 1, EGR, TC, FF/FR | °C/°F | 10-90°C (50-194°F) (temperatures may increase under heavy engine loads) |
IAT Sensor 2 | Eng 1, EGR, TC, FF/FR | °C/°F | 10-90°C (50-194°F) (temperatures may increase under heavy engine loads) |
Ignition 1 Signal | Eng 1, EGR, FF/FR | Volts | battery voltage (accuracy +/-0.4 volts) |
MAF Sensor | Eng 1 | Volts | 0.70-0.78 |
MAF Sensor | Eng 1, Fuel, EGR, TC, FF/FR | g/s | 32-38 |
Main Injection Timing | Eng 1, Eng 2, Fuel, FF/FR | degrees | 0 ± 3 degrees |
MAP Sensor | Eng 1, EGR, TC, FF/FR | kPa | Near BARO |
MAP Sensor | EGR, TC | volts | 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 / VCM in VTD Fail Enable | Eng 1 | Yes/No | Yes |
Pilot Inj. Cyl. 1-8 Command | Eng 2 | On/Off | On |
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 |
Reverse Enable | Eng 1 | Yes/No | No |
Start up ECT | Eng 1, FF/FR | °C/°F | Varies (ECT at time of engine startup) |
Start up IAT | Eng 1 | °C/°F | Varies (IAT at time of engine startup) |
Stoplamp Pedal Switch | Eng 1 | Applied/Released | Released |
TCM MIL Request | Eng 1 | On/Off | Off |
TC Vane Pos. Ctrl. Solenoid Duty Cycle | TC | % | Varies |
TC Vane Position Lrn. this run cycle | TC | Yes/No | Yes |
TC Vane Position Lrn. Since DTC Clear | TC | Yes/No | Yes |
TC Vane Position Sensor | TC | % | 70-80 |
TC Vane Pos. Ctrl. Solenoid | TC | Amps | 1.0 |
TCC/Cruise Brake Pedal Switch | Eng 1 | Applied/Released | Released |
Vehicle Speed Sensor | Eng 1, Fuel, EGR, 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 Sensor | Eng 1 | Water/ No Water | No Water |
Scan Tool Data List Glow Plug Control Module
The GPCM Scan Tool Data List contains all glow plug control module related parameters that are available on the scan tool. The list is arranged in alphabetical order.
Use the GPCM Scan Tool Data List only after the following is determined:
| • | The Diagnostic System Check - Vehicle is completed. |
| • | No diagnostic trouble codes (DTCs) are present. |
| • | The 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 GPCM 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.
Scan Tool Parameter | Units Displayed | Typical Data Value |
|---|---|---|
Operating Conditions: Engine Idling/Lower Radiator Hose Hot/Closed Throttle/Park or Neutral/Accessories Off | ||
Glow Plug | Volts | 14 |
Glow Plug 1-8 | Amps | 19-21 |
Glow Plug 1-8 | ohms | 0.49-0.90 |
Glow Plug Driver Open | OK/Fault | OK |
Glow Plug Driver Shorted | OK/Fault | OK |
Glow Plug Overtemp | OK/Fault | OK |
Glow Plug Overvoltage | OK/Fault | OK |
Glow Plug Undervoltage | OK/Fault | OK |
IA Heater Driver Current | OK/Fault | OK |
IA Heater Driver Grounded | OK/Fault | OK |
IA Heater Driver Open | OK/Fault | OK |
IA Heater Driver Shorted | OK/Fault | OK |
IA Heater Overtemp | OK/Fault | OK |
IA Heater Overvoltage | OK/Fault | OK |
IA Heater Undervoltage | OK/Fault | OK |
Ignition 1 Signal | volts | Battery Voltage |
Intake Air Heater | Volts | 11-13.2 |
Intake Air Heater | % | 0 |
