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Home >> GMC >> 1997 >> Suburban C2500, 6.5 F >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Tests W/Codes - 6.5L >> Self-Diagnostic System >> Typical Tech 1 Or 2 Data Values

Typical Tech 1 Or 2 Data Values

NOTE: Information contained in the following table is typical of readings taken on 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 in tables). Not all devices and systems are used on all models. Refer to scan tool manufacturer's instructions.
TYPICAL TECH 1 OR 2 DATA VALUES

Tool Position Units Measured Nominal Data Value
A/B/C Range Sw On/Off Off
A/C Compressor Engage/ Disengage Disengage
A/C Relay Yes/No No
A/C Request On/Off Off
Actual EGR kPa 75-85
Act. Inj. Timing Degrees 4-7
APP Angle % 0
APP 1 Volts .45-.95
APP 2 Volts 4.0-4.5
APP 3 Volts 3.6-4.0
BARO kPa/Volt 3-5 Volts (Varies With Altitude & BARO Pressure)
Boost Pressure kPa 60-103 (Varies With Altitude)
Boost Solenoid % 60-70
Brake Switch Opn/Clsd Open
Calc A/C Load Ft Lbs 0
Crank Ref Missed # 0 (Missed)
Cruise Active On/Off Off
Cruise Brake Sw. Opn/Clsd Clsd
Cruise Switch On/Off Off
Desired EGR kPa 75-85
Desired Idle RPM PCM Commanded
Desired Speed RPM 652
Des. Inj. Timing Degrees 4-7
Device Control Yes/No No
DTC Set This Ign. Yes/No No
DTC Set This Ign. Counts 0
ECT F/C 185-221 (85-105) (Varies With Temp)
ECT F/C 200 (93)
ECT Sensor Volts 1.7-2.2 (Varies With Temp.)
ECT Sensor Volts 2.0
EGR Solenoid % 35-45
EGR Vent Sol On/Off On
Engine Load % 4-6
Engine Run Time Seconds 0
Engine Run Time Hr/Min /Sec Varies
Engine Speed RPM +/-100 From Desired
Engine Speed RPM 650
Engine Torque Ft Lbs 7-10
ESO Solenoid On/Off On
Front Axle Sw. Unlocked /Locked Unlocked
Fuel Rate Mm Cubed 7-12
Fuel Temperature F/C 159 (70)
Glow Plug Volts 0
Glow Plug System Disabled /Enabled Disabled
IAT F/C 140-176 (60-80) (Varies With Temp.)
IAT Sensor Volts 1.46
IAT Sensor F/C 109 (43)
Ignition Volts Volts 12-14
Inj. Pump Cam Ref. Missed Counts 0
Inj. Pump Sol. Closure Time Milsec 1.70-1.90
Lift Pump Volts 12-15
Lift Pump Relay Disabled /Enabled Enabled
Lift Pump Volts 12-15
Lift Pump System Disabled /Enabled Enabled
MIL Light On/Off Off
MPH/KPH MPH/KPH 0-0
PC Solenoid On/Off Off
Resume Switch On/Off Off
Set Switch On/Off Off
Start-Up ECT F/C Varies (Depends On Start-Up ECT)
Start-Up ECT F/C Varies
STS Light On/Off Off
TCC Enabled On/Off Off
TDC Offset Degrees +.75 To -1.95
TFT F/C 158 (70)
TFT Sensor Volts 2.5-3.5
TR Switch Park/Neut, Rev, D1, D2, D3 Park
1-2 Sol/2-3 Sol On/Off On/Off
4WDL Mode Enabled/ Disabled Disabled
# Of Curr DTCs Counts 0