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.

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
5 Volts Reference 1	Fuel	Volts	Varies
5 Volts Reference 2	Fuel	Volts	Varies
5 Volts Reference 3	Fuel	Volts	Varies
A/C Clutch Feedback Signal	Eng 1	Relay ON/OFF	Relay OFF
A/C High Side Pressure	Eng 1	Volts	Varies
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 2	Eng 1, FF/FR	Volts	0.40-0.50
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
Check Trans Lamp	Eng 1	ON/OFF	OFF
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	%	4%
Desired FRP Regulator	Fuel	mA	1,200-1,400
Desired Fuel Rail Pressure	All	MPa/PSI	25-35 MPa (3,626-5,076 psi)
Desired Idle Speed	Eng 1, FF/FR	RPM	630-700
Desired TC Vane Position	TC	%	80%
Desired 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	%	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
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, TC, 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 +/- 2.5 degrees
MAP Sensor	Eng 1, EGR, TC, FF/FR	kPa/PSI	Near BARO
MAP Sensor	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	Yes/No	No
TC Vane Learned Closed Position	TC	counts	Varies
TC Vane Learned Open Position	TC	counts	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