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For 1990-2009 cars only

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

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:

Eng: Engine Data

Cyl: Cyl. Deactivation Data

EGR: EGR Data

Eng. Pos.: Eng. Position Data

Eng. Spd.: Eng. Speed Cont. Data

Exh: Exh. After Treatment Data

FF/FR: Freeze Frame/Failure Records Data List

Fuel: Fuel System Data

Ind.: Induction Data

Mis.: Misfire 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

5-Volt Reference 1 Circuit

Exh.

OK/Fault

OK

5-Volt Reference 2 Circuit

Exh.

OK/Fault

OK

5-Volt Reference 3 Circuit

Exh.

OK/Fault

OK

A/C Relay Command

Eng, EGR

ON/OFF

Off

Ambient Air Temp.

Eng

°C (°F)

Varies

APP Indicated Angle

Eng, EGR, Fuel, FF/FR

%

0.0

APP Sensor 1

Eng Spd

Volts

0.90-0.94

APP Sensor 1 Indicated Position

Eng Spd

%

0%

APP Sensor 2

Eng Spd

Volts

0.40-0.50

App Sensor 2 Indicated Position

Eng Spd

%

0%

Balancing Rate Cyl. 1-8

Eng, Fuel

mm³

-4.0 to +4.0

BARO

Eng, EGR, FF/FR

kPa

65-104 (Varies with altitude)

Base Injector Fuel Rate

Eng Fuel

mm³

5-7

Boost Pressure Sensor

Eng Spd, Ind

kPa

BARO

CAM Signal Present

Eng. Pos.

Yes/No

Yes

CKP Sensor Signal Present

Eng. Pos.

Yes/No

Yes

Cmmd. A/F Equivalence Ratio

Eng, Exh, Fuel, Ind

Ratio

0:2:1

Coolant Level Switch

Eng

OK/Low

OK

Cruise Control Active

Eng.

Yes/No

No

Current Fuel Type

Fuel

Diesel

Diesel

Desired EGR Position

EGR

%

20-50

Desired Fuel Rail Pressure

Eng, Fuel, EGR

MPa/PSI

25-35 MPa (3,626-5,076 psi)

Desired IAF Valve Position

EGR, Exh, Induc.

%

100

Desired Idle Speed

Eng 1, FF/FR

RPM

630-700

Desired TC Boost

Induc., Eng, Spd.

kPa

BARO

Des. TC Vane Position

TC

%

80-100

Des. TC Vane Pos. Ctrl. Solenoid

TC

Amps

0.0

Distance Since DTC Cleared

Eng

km/miles

0

Distance Since Last DPF Regeneration

Exh

km/miles

Varies

DPF Indicator Command

Exh.

ON/OFF

OFF

DPF Pressure Sensor

Exh.

Volts

0.97-1.3

DPF Regen Inhibit Reason

Exh.

Reason

Reason

DPF Regeneration Completed

Exh.

Counts

Varies

DPF Regeneration Reason

Exh.

Reason

Reason

DPF Regeneration Status

Exh.

Statement

Not Required

DPF Soot Mass

Exh.

Grams

0-10

EC Ignition Relay Command

Eng, Eng Spd.

ON/OFF

ON

ECT Sensor 1

All

°C (°F)

105-185°C (221-365°F)

ECT Sensor 2

Eng

°C (°F)

105-185°C (221-365°F)

EGR Learned Minimum Position

EGR

%

0

EGR Position Sensor

EGR

Volts

1-1.1

EGR Position Sensor

Eng

%

20

EGR Position Variance

EGR

%

Varies

EGR Solenoid Command

EGR

%

5-15

EGT Sensor 1

Exh.

°C (°F)

80-120°C (176-248°F)

EGT Sensor 2

Exh.

°C (°F)

80-120°C (176-248°F)

Engine Load

All

%

1%

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 Run Time Since Last DPF Regeneration

Exh.

HH:MM:SS

Varies

Engine Speed

All

RPM

+/-50 RPM from desired

FRP Regulator Command

Eng, Fuel, EGR, FF/FR

%

35-45

Fuel Level Sensor

Fuel

Volts

Varies with fuel level

Fuel Pump Relay Command

Eng, Fuel

ON/OFF

OFF

Fuel Rail Pressure Sensor

Eng, Fuel

MPa

25-35 MPa (3,626-5,076 psi)

Fuel Rail Pressure Sensor

Fuel

Volts

1-2

Fuel Tank Level Remaining

Eng, Exh., Fuel, Mis.

%

Varies

Fuel Temperature Sensor

Eng, Fuel, FF/FR

°C/°F

10-90°C (50-194°F)

Fuel Used Since Last DPF Regeneration

Exh.

Liters/Gallons

3.78/1 (1 regen complete)

Glow Plug Command

Eng, Ind.

ON/OFF

OFF

High Idle Switch

Eng. Spd.

On/Off

Off

IAF Valve Learned Minimum

Ind.

%

100

IAF Valve Position

EGR, Exh., Ind.

%

100

IAF Valve Pos. Sensor

Ind.

Volts

4-5 Volts

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 Accessory Signal

Eng, Eng. Spd.

ON/OFF

OFF

Ignition 1 Signal

Eng 1, EGR, FF/FR

Volts

battery voltage (accuracy +/-0.4 volts)

Ignition 1 Signal

All

Volts

12-14

Injection Pump CAM Reference Signal Missed

Eng. Pos., Fuel

Counts

0

Injector Timing

Eng, Fuel

°

--

Intake Air Heater Command

Exh., Ind.

%

0

Intake Air Heater Command

Ind.

ON/OFF

OFF

MAF Sensor

Ind.

Hz

2400-1700

MAP Sensor

Eng, Ind

Grams

Varies

Misfire Current Cyl. 1

Mis.

Counts

0

Misfire Current Cyl. 2

Mis.

Counts

0

Misfire Current Cyl. 3

Mis.

Counts

0

Misfire Current Cyl. 4

Mis.

Counts

0

Misfire Current Cyl. 5

Mis.

Counts

0

Misfire Current Cyl. 6

Mis.

Counts

0

Misfire Current Cyl. 7

Mis.

Counts

0

Misfire Current Cyl. 8

Mis.

Counts

0

Particulate Filt. Pressure Variance

Eng. Spd., Exh., Ind.

kPa

0.0-3.5

Pilot Inj. Cyl. 1-8 Command

Eng

On/Off

On

PNP Switch

Eng

In Gear/Park/Neutral

Park/Neutral

Reduced Engine Power

Cyl. Dea., Eng. Spd., Fuel

Inactive, Active

Inactive

Start up ECT

Cool

°C/°F

Varies (ECT at time of engine startup)

Start Up Fuel Temperature

Fuel

°C/°F

Varies

Start up IAT

Cool

°C/°F

Varies (IAT at time of engine startup)

TC Vane Position Lrn. this run cycle

Ind

Yes/No

Yes

TC Vane Position Lrn. Since DTC Clear

Ind

Yes/No

Yes

TC Vane Position Sensor

Ind

%

70-100

TC Vane Position Sensor

Ind.

Volts

2-4

TC Vane Pos. Ctrl. Solenoid

Ind

DC

40-50

TCC/Cruise Brake Pedal Switch

Eng

Applied/Released

Released

Vehicle Speed Sensor

All

mph/km/h

0

Warm-ups Since DTC Cleared

Eng

Counts

1

Warm-ups w/o Emission Faults

Eng

Counts

0

Warm-ups w/o Non-Emission Faults

Eng

Counts

0

Water In Fuel Sensor

Fuel

Water/ No Water

No Water

Water In Fuel Sensor

Fuel

Volts

0.21-4.75