Engine Control Module Scan Tool Information (LCD, LBX or LBS)
| Engine Control Module Scan Tool Information (LCD, LBX or LBS) |
Scan Tool Data Parameters
| Parameter | System State | Expected Value | Description |
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Operating Conditions:
Engine Idling/Radiator Hose Hot/Park or Neutral/Closed Loop
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A/C Compressor Clutch Relay Command
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A/C ON
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Active
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This parameter displays the state of the air conditioning (A/C) clutch relay control circuit as commanded by the control module.
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A/C Disabled - A/C Pressure Out of Range
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A/C ON
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No
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This parameter displays the A/C compressor disable status.
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A/C Disabled - Engine Coolant Temperature too High
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A/C ON
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Inactive
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This parameter displays the A/C compressor disable status.
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A/C High Side Pressure Sensor
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A/C OFF
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0-5 V
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This parameter displays the voltage from the A/C high side pressure sensor signal circuit to the control module.
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A/C ON
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0-5 V
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A/C High Side Pressure Sensor
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A/C OFF
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700-90 kPa (101-13 PSI)
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This parameter displays the pressure from the A/C high side pressure sensor signal circuit to the control module.
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A/C ON
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900-1 300 kPa (130-17PSI)
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A/C Off For Wide Open Throttle (WOT)
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A/C ON
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No
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This parameter displays the A/C compressor disable status.
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Accelerator Pedal Position
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-
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0%
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This parameter displays the angle of accelerator pedal position as calculated by the control module using the signals from the APP sensors.
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Ambient Air Temperature
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-
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Varies with outside temperature
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This parameter displays the outside temperature.
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APP Sensor 1
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-
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1.02 V
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This parameter displays the voltage of the APP sensor 1 signal circuit as measured by the control module.
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APP Sensor 2
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-
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0.51 V
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This parameter displays the voltage of the APP sensor 2 signal circuit as measured by the control module.
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BARO
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-
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0-5 V - Varies with altitude
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This parameter displays the barometric pressure in voltage. The control module uses the barometric pressure sensor input for fuel control to compensate for altitude differences.
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BARO
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-
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65-104 kPa (8-16 PSI) Varies with altitude
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This parameter displays the barometric pressure. The control module uses the barometric pressure sensor input for fuel control to compensate for altitude differences.
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Boost Pressure Sensor
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-
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82-110 kPa (12-16 PSI)
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This parameter shows the turbocharger's boost pressure in the engine according to the control module's calculation. The calculation is based on the boost pressure sensor's signal.
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Boost Pressure Sensor
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-
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1.45-1.75 V
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This parameter shows the voltage in the turbocharger's boost pressure in the engine according to the control module's calculation. The calculation is based on the boost pressure sensor's signal.
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Camshaft Position Sensor
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Engine cranking
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Greater than 30 RPM
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This parameter displays the speed of the engine camshaft rotation from information received from the camshaft position sensor.
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Engine Idling
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Approximately 375-42 RPM
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Cooling Fan Relay 1 Command, Cooling Fan Relay 2 Command, Cooling Fan Relay 3 Command
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Fans Commanded ON
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Active
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This parameter displays the control module commanded state of the fan relay control circuits.
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CPP Learn Status
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-
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Inactive
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This parameter displays the clutch pedal learn status. There are 6 different possible states for the clutch pedal learn status.
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CPP Learned Apply Position
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-
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0-5 V
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This parameter displays the voltage of the applied clutch pedal learned position.
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CPP Learned Release Position
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-
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0-5 V
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This parameter displays the voltage of the released clutch pedal learned position.
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CPP Sensor
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-
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0-5 V
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This parameter displays the voltage of the clutch pedal position.
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CPP Sensor
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-
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0-100%
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This parameter displays the clutch pedal position.
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Crank Request Signal
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-
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Inactive
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This parameter shows the power mode status of the starter motor. When Active is displayed, a request to engage the starter has been received by the ECM.
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Ignition switch in the crank position
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Active
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Cylinder 1 Balancing Rate, Cylinder 2 Balancing Rate, Cylinder 3 Balancing Rate, Cylinder 4 Balancing Rate
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-
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Varies
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This parameter displays the difference of fuel injection mass of each cylinder.
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Cylinder 1 Maximum Combustion Pressure, Cylinder 2 Maximum Combustion Pressure, Cylinder 3 Maximum Combustion Pressure, Cylinder 4 Maximum Combustion Pressure
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Engine running
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Varies
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This parameter displays the actual combustion chamber pressure of each cylinder.
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Desired Air Flow
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-
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4-8 g/s
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This parameter shows desired air flow in the engine. This value is calculated by the control module based on the signal from the mass air flow sensor.
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Desired Boost Pressure
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-
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98 kPa (14.2 PSI)
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This parameter shows the turbocharger's desired boost pressure in the engine according to the control module's calculation. The calculation is based on the boost pressure sensor's signal.
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Desired EGR Position
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-
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0-100%
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This parameter displays the desired exhaust gas recirculation (EGR) position as calculated by the control module based on the signal from the EGR position sensor.
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Desired Fuel Rail Pressure
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-
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20.00-45.00 MPa (2 900-6 527 PSI)
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This parameter displays the desired fuel rail pressure as calculated by the control module. This value is calculated based on engine speed, engine load, and sensor inputs.
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Desired Idle Speed
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-
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700-80 RPM
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This parameter displays the desired engine idle speed as commanded by the control module.
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Desired Turbocharger Vane Position
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-
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0-100%
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This parameter shows desired turbine blade position for the turbocharger. This value is calculated by the control module based on the boost pressure sensor's signal.
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Distance Since DTC Cleared
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-
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Varies
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This parameter displays the distance that has elapsed since the last DTC was cleared.
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Distance Since Last DPF Regeneration
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-
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Varies
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This parameter displays the distance that has elapsed since the last diesel particulate filter regeneration has occurred.
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Distance Since Last DPF Replacement
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-
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Varies
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This parameter displays the distance that has elapsed since the diesel particulate filter was replaced.
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DPF Differential Pressure Sensor
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-
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0.00 kPa (0.00 PSI)
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This parameter displays the difference between the front and rear pressures at the diesel particulate filter (DPF) as calculated by the ECM.
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DPF Differential Pressure Sensor
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-
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0-5 V
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This parameter shows the difference between the front and rear pressure by the diesel particle filter. This value is calculated by the engine control module.
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DPF Regeneration Status
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-
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0-100%
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This parameter displays the regeneration exhaust particulate filter.
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DPF Soot Accumulation
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-
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0-180%
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This parameter displays the amount of calculated soot in exhaust particulate filter.
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ECT Sensor
|
-
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-39 to +140°C (-38 to +284°F)
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This parameter displays the temperature of the engine coolant based on input to the control module from the engine coolant temperature (ECT) sensor.
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ECT Sensor
|
-
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0-5 V
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This parameter displays the voltage calculated by the control module from the engine coolant temperature (ECT) sensor.
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EGR Command
|
-
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40-55%
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This parameter displays the percent of the duty cycle commanded by the control module.
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EGR Position Sensor
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-
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0-100%
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This parameter displays the percent of the EGR position calculated by the control module.
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EGR Position Sensor
|
-
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Varies
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This parameter displays the voltage of the EGR position calculated by the control module.
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Engine management system's ignition relay feedback signal
|
-
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11-14.5 V
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This parameter displays the actual battery voltage.
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Engine Load
|
-
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varies
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This parameter displays the actual battery voltage.
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Engine Oil Life Remaining.
|
-
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Varies
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This parameter displays the remaining oil life.
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Engine Oil Level Switch
|
-
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OK
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This parameter displays the status of the engine oil level switch as determined by the control module. The control module uses this information to turn on the low engine oil lamp if the engine oil level remains approximately 1.5 l low for a sufficient amount of time.
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Oil Pressure Switch
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-
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OK
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This parameter displays the engine oil pressure. This value is calculated by the control module based on the oil pressure sensor's signal.
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Engine Oil Temperature When Engine Overspeed Detected
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-
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Varies
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This parameter displays the temperature of the engine oil if overspeed detected.
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Engine Overspeed
|
-
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Intermittent
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This parameter displays the status if overspeed detected.
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Engine Overspeed Counter
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-
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Varies
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This parameter displays the status if overspeed detected.
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Engine run time
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-
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Increments when the engine is operating.
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This parameter displays the time elapsed since the engine was started.
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Engine Speed
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Engine cranking
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Greater than 60 RPM
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This parameter displays the speed of the engine crankshaft rotation from information received from the crankshaft position sensor. If there is a crankshaft position sensor DTC, the ECM calculates the engine speed from the camshaft position sensor.
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Engine Idling
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Approximately 750-85 RPM
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Engine Speed When Engine Overspeed Detected
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-
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Varies
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This parameter displays the speed of the engine crankshaft rotation stored if an engine overspeed is detected.
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Exhaust Gas Temperature Sensor 1
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-
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Varies
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This parameter shows the exhaust temperature before the diesel particle filter. If the exhaust temperature is the diagnostic tool shows a low temperature. When the exhaust temperature is high, the scan tool will display a high temperature.
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Exhaust Gas Temperature Sensor 1
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-
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Varies
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This parameter displays the voltage calculated by the control module from the exhaust temperature before the DPF.
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Exhaust Gas Temperature Sensor 2
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-
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Varies
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This parameter shows the exhaust temperature after the diesel particle filter. If the exhaust temperature is the diagnostic tool shows a low temperature. When the exhaust temperature is high, the scan tool will display a high temperature.
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Exhaust Gas Temperature Sensor 2
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-
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Varies
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This parameter displays the voltage calculated by the control module from the exhaust temperature after the DPF.
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Fuel Level Sensor
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-
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Varies
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This parameter displays the voltage from the sensor used to monitor the fuel level inside the fuel tank. The scan tool will display a low voltage reading when that the fuel level in the tank is low or near empty. The scan tool will display a high voltage reading when the fuel level in the tank is high or near full.
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Fuel Pressure Regulator 1 Command
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-
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Varies
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This parameter displays the control modules commanded state of the fuel rail pressure regulator 1.
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Fuel Pressure Regulator 1
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-
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1 300-1 400 mA
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This parameter displays the control modules commanded state of the fuel rail pressure regulator 1.
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Fuel Pressure Regulator 2 Command
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-
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20 %
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This parameter displays the control modules commanded state of the fuel rail pressure regulator 2.
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Fuel Pressure Regulator 2
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-
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500-60 mA
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This parameter displays the control modules commanded state of the fuel rail pressure regulator 2.
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Fuel Pump Relay Command
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Ignition ON, Engine OFF
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Fuel pump on for 2 s
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This parameter displays the control modules commanded state of the fuel pump relay control circuit.
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Engine Idling
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On
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Fuel Rail Pressure Sensor
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-
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20.00-45.00 MPa (2 900-6 527 PSI)
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This parameter displays the fuel rail pressure calculated by the control module using the signal from the fuel rail pressure sensor.
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Fuel Rail Pressure Sensor
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-
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1.40-1.50 V
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This parameter displays the voltage of the fuel rail pressure calculated by the control module using the signal from the fuel rail pressure sensor.
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Fuel Temperature Sensor
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-
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25-40°C (77-104°F)
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This parameter displays the fuel temperature calculated by the control module based on input from the fuel temperature sensor.
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Fuel Temperature Sensor
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-
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2.80 V
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This parameter displays the voltage calculated by the control module based on input from the fuel temperature sensor.
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Generator F-Terminal Signal
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-
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25-35%
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This parameter displays the commanded state of the generator by the control module.
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Generator L-Terminal Signal
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-
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Active
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This parameter indicates the generator commanded state by the ECM.
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Glow Plug Command
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-
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Inactive
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This parameter displays the control module commanded state of the glow plug.
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Glow Plug Relay Command
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-
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Inactive
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This parameter displays the control module commanded state of the glow plug.
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Glow Plug Relay Feedback
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-
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Inactive
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This parameter displays the control module feedback state of the glow plug.
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HO2S 1 Heater Command
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-
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Varies
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This parameter displays the commanded state of the heated oxygen sensor (HO2S) heater by the control module. The scan tool will display a higher percentage as the heater command is increased, and a lower percentage if the heater is not commanded ON.
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HO2S Bank 1 Sensor 1
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-
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50-850 mV and Varying
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The scan tool displays a range of 0-1 106 mV. The HO2S bank 2 parameter represents the exhaust oxygen sensor output voltage. The voltage fluctuates constantly within a range between 10-1 000 mV, while operating in Closed Loop.
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HO2S Bank 1 Sensor 1
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-
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Varies
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This parameter displays the air to fuel ratio calculated by the control module.
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IAT Sensor 1
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-
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-39 to +140°C (-38 to +284°F)
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This parameter represents the temperature in the air that enters the engine's air channel according to the control module's calculation. This calculation is based on the input signal from the sensors for inlet air temperature.
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IAT Sensor 1
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-
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0-5 V
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This parameter shows the voltage in the air that enters the engine through the air inlet. This value is calculated by the control module based on the input signal from the inlet air temperature sensors.
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IAT Sensor 2
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-
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-39 to +140°C (-38 to +284°F)
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This parameter shows the temperature in the air that enters the engine through the air inlet after the turbocharger. This value is calculated by the control module based on the input signal from the inlet air temperature sensors.
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IAT Sensor 2
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-
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0-5 V
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This parameter shows the voltage in the air that enters the engine through the air inlet after the turbocharger. This value is calculated by the control module based on the input signal from the inlet air temperature sensors.
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Ignition Switch Status
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-
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Active
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This parameter displays the voltage measured at the ignition 1 circuit of the control module. Voltage is applied to the control module when the ignition switch is in the ignition 1 position.
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Intake Air Flow Valve Motor Command
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-
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Varies
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This parameter displays the percent of the control modules commanded state of the intake air flow valve.
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Intake Air Flow Valve Position
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-
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Varies
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This parameter displays the percent of the position of the intake air flow valve.
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Intake Air Flow Valve Position Sensor
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-
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Varies
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This parameter displays the voltage of the position of the intake air flow valve.
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Intake Manifold Runner Control Valve Control Circuit Command
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-
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Varies
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This parameter displays the percent of the control modules commanded state of the intake manifold runner valve.
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Intake Manifold Runner Control Valve Control Circuit Command
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-
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Varies
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This parameter displays the degrees of the control modules commanded state of the intake manifold runner valve.
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Intake Manifold Runner Control Valve Feedback Signal
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-
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Varies
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This parameter displays the feedback signal of the control modules commanded state from the intake manifold runner valve.
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MAF Sensor
|
-
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4-8 g/s
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This parameter shows the air flow in the engine. This value is calculated by the control module based on the signal from the mass air flow sensor.
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MAF When Engine Overspeed Detected
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-
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Varies
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This parameter shows the air flow in the engine. This value is calculated by the control module based on the signal from the mass air flow sensor if too high rpm has been registered.
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Odometer When Engine Overspeed Detected
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-
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Varies
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This parameter displays the vehicle speed stored if an engine overspeed condition is detected.
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Park/Neutral Position Switch
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-
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Varies
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This parameter displays the position of the shift lever.
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Remaining Fuel in Tank
|
-
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0-100%
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This parameter displays the percentage of the actual fuel in tank.
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Reverse Position Switch
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-
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Inactive
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This parameter displays the status of the reverse gear position switch.
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Starter Relay Command
|
-
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Off
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This parameter displays the commanded state of the starter relay.
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System Voltage
|
-
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11.0-14.5 V
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This parameter displays the actual battery voltage.
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Total Engine Overspeed Time
|
-
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Varies
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This parameter displays the time, how long an engine overspeed condition was detected.
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Total Fuel Injection Quantity Per Stroke
|
-
|
Varies
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This parameter displays the fuel amount per stroke.
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Turbocharger Vane Position Sensor
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-
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0-100%
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This parameter displays the percent of turbocharger vane position as calculated by the control module using the information from the turbocharger vane position sensor.
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Turbocharger Vane Position Sensor
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-
|
Varies
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This parameter shows the voltage in the turbocharger's turbine blade position. This value is calculated by the control module based on input from the turbocharger's turbine blade position sensor.
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Turbocharger Vane Position Solenoid Valve Command
|
-
|
Varies
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This parameter displays the percent of the control modules commanded state of the turbocharger vane position valve based on the boost pressure sensor.
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Vehicle Speed
|
-
|
0 km/h (0 MPH)
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This parameter displays the speed of the vehicle as calculated by the engine control module (ECM) from information received from the antilock brake system.
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Warm-ups Since DTC Cleared
|
-
|
Varies
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This parameter displays the number of warm starts counted by the control module since DTC cleared.
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Water in Fuel Sensor
|
-
|
Inactive
|
This parameter displays the commanded state of the water in fuel lamp by the control module.
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Scan Tool Output Controls
| Output Control | Description | ||||||
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A/C Compressor Clutch Relay
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This function activates the A/C compressor relay. The normal commanded state of the A/C relay is OFF. The A/C compressor will turn ON/OFF when commanded ON/OFF. The system remains in the commanded state for approximately 5 seconds. The engine control module (ECM) will inhibit the operation of the A/C relay when the ambient air temperature is low.
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Cooling Fan
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Cooling Fan Speed Enable; Cooling Fan Speed
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Cooling Fan Relay 1
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Cooling Fan Speed Enable; Cooling Fan Speed
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Cooling Fan Relay 2
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Cooling Fan Speed Enable; Cooling Fan Speed
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Cooling Fan Relay 3
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Cooling Fan Speed Enable; Cooling Fan Speed
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Crank Case Ventilation Heater
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Activate heater for crankcase ventilation Crank Case Ventilation Heater ON
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Cylinder Power Balance
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Fuel Injector Enable; Fuel Injector ON
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EGR Cooler Bypass Valve
|
Activate bypass valve to EGR cooler. Bypass valve to EGR cooler ON.
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EGR Valve
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This function opens or closes the exhaust gas recirculation (EGR) solenoid. The EGR solenoid increases or decreases in 10 percent increments. The device control will not change unless changed or cancelled by the scan tool.
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Engine Speed
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This function adjusts engine speed in steps of 25, 100 or 500 rpm between 600-1 500 rpm. The Device Control will not change unless changed or cancelled by the scan tool.
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Fuel Injector Balance
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This function controls the fuel balance of the injectors. When commanded OFF the normal fuel differences is present. When commanded ON the cylinder specific RPM is displayed. |
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Fuel Pump Relay
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This function activates the pump ON or OFF. The Device Control will not change unless changed or cancelled by the scan tool.
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Generator L-Terminal
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This function controls the system voltage. When commanded ON, normal system voltage output is present. When commanded OFF, system voltage output is no longer present, Ignition 1 signal continues to drop, Generator L-Terminal goes to OFF and Generator F-Terminal continues to drop.
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Glow Plug
|
This function activates the Glow Plug Controller ON or OFF. The Device Control will be aborted after 12 seconds for the first activation, and after 5 seconds for every other activation. The Device Control is inhibited if the engine is running.
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HO2S Heater Sensor 1
|
HO2S Heater Sensor 1 Command 0-100%
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Intake Air Flow Valve Position
|
Intake Air Flow Valve Position Command 0-100%
|
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Intake Manifold Runner Control Valve
|
Intake Manifold Runner Command 0-100%
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Starter Relay
|
Starter Relay Enable Starter Relay ON
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Turbocharger Vane Position
|
Cycles the turbocharger vane position solenoid to 95 percent boost and back to 0 percent boost. The device control is limited to engine speeds less than 2 000 RPM.
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