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Home >> GMC >> 2000 >> C3500 HD 6.5 F, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System Self-Diagnostics - Diesel >> Scan Tool Data
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Scan Tool Data

NOTE: Information contained in the following table is typical of readings taken from vehicle with engine idling, upper radiator hose hot, throttle closed, transmission in Park or Neutral, closed loop status achieved and all accessories off (except as noted). Not all devices and systems are used on all models. Refer to scan tool manufacturer's instructions.
SCAN TOOL DATA VALUES

Parameter Units Displayed Typical Value
A/B/C Range Sw. On, On, On/Off, Off, Off On/Off/On
A/C Compressor Engaged/Disengaged Disengaged
A/C Relay On/Off Off
A/C Request Yes/No No
Actual Injector Pump Timing Degrees 4-10 @ Idle; 14-20 @ 2500 RPM
APP Angle Percent 0 @ Idle; 4-12 @ 2500 RPM
APP 1 Volts .44-.95 @ Idle; .75-1.25 @ 2500 RPM
APP 2 Volts 3.9-4.5 @ Idle; 3.7-4.3 @ 2500 RPM
APP 3 Volts 3.6-4.1 @ Idle; 3.5-4.0 @ 2500 RPM
BARO kPa 65-104 (Varies W/Altitude)
Boost Pressure Sensor kPa 60-170 (All RPMs)
Brake Switch Open/Closed Open
Calc. A/C Load Counts 0
Crank Ref. Missed Counts 0 (Missed)
Cruise Active On/Off Off
Cruise Brake Sw. Open/Closed Closed
Cruise Switch On/Off Off
Desired Idle Speed RPM 630-650
Desired Injector Pump Timing Degrees 4-10 @ Idle; 14-20 @ 2500 RPM
DTC Set This Ign. Counts Yes/No
ECT °F (°C) 185-220 (85-105) (Varies W/Temp.)
ECT Sensor Volts 2-3 (Varies W/Temp.)
Engine Load (1) Percent 1-15
Engine Load (2) Percent 4-8
Engine Run Time Hr/Min/Sec Varies W/Engine Run Time
Engine Speed RPM ±100 RPM From Desired
Engine Torque (1) Ft. Lbs. 3-30
Engine Torque (2) Ft. Lbs. 6-10
ESO Solenoid On/Off On
Fuel Rate mm3 7-15 (All RPMs)
Fuel Temperature Sensor °F (°C) 50-194 (10-90)
Glow Plug Volts 0-0.2
Glow Plug System Disabled/Enabled Enabled (Key On)
Glow Plug System Type (2) California/Federal Enabled/Disabled
IAT °F (°C) 50-194 (10-90) (Varies W/Temp. & Load)
Ignition Voltage (1) Volts 12-14 (± 0.4)
Ignition Voltage (2) Volts 8-16
Injector Pump Cam Ref. Missed Counts 0
Injector Pump Sol. Closure Time Milliseconds 1.7-1.9 (All RPMs)
Lift Pump Volts 12-16 (0.6 Higher Than Ignition)
Lift Pump System Disabled/Enabled Enabled
MIL On/Off Off
No. Of DTCs Counts 0
PCM In VTD Fail Enable Yes/No No
Resume Switch On/Off Off
SERVICE THROTTLE SOON Light On/Off Off
Set Switch On/Off Off
Start-Up ECT °F (°C) Varies (Depends On Start-Up ECT)
TDC Offset Degrees +.75 To -1.75 (Factory Setting Varies W/Engine)
Trans. Fluid Temp. °F (°C) 122-176 (50-80)
Trans. Range P/N/R/OD/D3/D2/D1 Park/Neutral
Vehicle Speed MPH/km/h 0
VTD Auto Learn Timer Active/Inactive Inactive
VTD Fuel Disable Active/Inactive Inactive
VTD Fuel Disable Until Ign. Off Yes/No No
Wastegate Solenoid Percent 50-70 @ Idle; 20-40 @ 2500 RPM
1-2 Solenoid On/Off On
2-3 Solenoid On/Off Off
(1) "C" & "K" Series.
(2) "G" Series.