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Electronic Control System Signature, ISX and QSX15 Engines – 018-001   Specifications

General Information

 TOC

 WARNING 

This diagram is provided as a diagnostic tool for trained, experienced technicians only. Improper troubleshooting or repair can result in severe personal injury or death or property damage. See important instructions in Service Manual.

Electrical Specifications

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DATALINK
Positive (+) wire to chassis ground (J1587 only)
2.5 to 5.0 VDC
Negative wire (-) to chassis ground (J1587 only)
0.0 to 2.5 VDC
J1939 BACKBONE RESISTANCE
Positive (+) wire to return wire
50 to 70 Ohms
J1939 Termination Resistance
110 to 130 Ohms
ALL CONTINUITY CHECKS
OK (no open circuit) if < 10 Ohms
Water-in-Fuel sensor: 82k Ohms (± 1 % at 25 °C [77°F]
ALL SHORTS TO GROUND
All other circuits OK, (no short circuit) if > 10 MOhms
SHORT CIRCUIT TO EXTERNAL VOLTAGE
OK if < 1.5 VDC
5 V POWER SUPPLY @ ECM
4.75 to 5.25 VDC
ECM CONNECTOR
Retaining Cap Screw Torque = 3 N•m [25 in-lb]
SOLENOIDS
Fuel Shutoff Solenoid and Wastegate Actuator Solenoid Coil Resistance
12 VDC system 7 to 8 Ohms = 20°C [68°F] to 25°C [77°F]
12 VDC system 6 to 10 Ohms = resistance at other temperatures
24 VDC system 28 to 32 Ohms = 20°C [68°F] to 25°C [77°F]
24 VDC system 24 to 40 Ohms = resistance at other temperatures
Engine Brake Solenoid Resistance
12 VDC system 8 to 10 Ohms = Cold
12 VDC system 16 to 20 Ohms = Hot
24 VDC system 32 to 40 Ohms = Cold
24 VDC system 60 to 80 Ohms = Hot
Fueling Actuator Temperature Resistance
0.54 to 1.07 Ohms = -17°C [0°F] to 54°C [130°F]
0.67 to 1.20 Ohms = 38°C [100°F] to 93°C [200°F]
Timing Actuator Temperature Resistance
0.87 to 1.73 Ohms = -17°C [0°F] to 54°C [130°F]
1.10 to 1.97 Ohms = 38°C [100°F] to 93°C [200°F]
Air Compressor Solenoids Resistance
11.0 to 20.0 Ohms.

Sensor Specifications

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Oil Pressure Sensor
Torque (Threaded style) = 14 N•m [10 ft-lb]
Pressure (kPa) Pressure [psia] Voltage (VDC)
0 0 0.70 to 1.20
172.37 25 2.10 to 2.70
344.74 50 3.50 to 4.20
414.11 60 4.00 to 4.70
Ambient Air/Barometric Pressure Sensor (Harness Mounted)
Altitude (m) Altitude [ft] Pressure [psia] Pressure [in Hg] Voltage (VDC)
0 (sea level) 0 14.7 29.9 3.65 to 4.28
915 3000 13.2 26.9 3.06 to 3.60
1830 6000 11.8 24.0 2.52 to 2.96
2744 9000 10.5 21.4 2.01 to 2.36
3659 12000 9.35 19.0 1.57 to 1.84
Ambient Air Pressure Sensor (Threaded Style)
Torque (Threaded style) = 14 N•m [10 ft-lb]
Altitude (m) Altitude [ft] Pressure (psia) Voltage (VDC)
0 (sea level) 0 14.7 3.40 to 4.50
915 3000 13.2 2.80 to 3.80
1830 6000 11.8 2.20 to 3.25
2744 9000 10.5 1.70 to 2.70
3659 12000 9.35 1.20 to 2.20
All Temperature Sensors
Torque (Threaded style) = 14 N•m [10 ft-lb]
Temperature (°C) Temperature [°F] Resistance (Ohms)
0 32 30k to 36k
25 77 9k to 11k
50 122 3k to 4k
75 167 1350 to 1500
100 212 600 to 675
Fuel Pressure Sensor
Torque = 14 N•m [10 ft-lb]
Pressure (kPa) Pressure [psig] Voltage (VDC)
0 0 0.60 to 0.75
345 50 1.20 to 1.50
690 100 1.90 to 2.15
1380 200 3.15 to 3.50
1970 285 4.20 to 4.70
Intake Manifold Pressure Sensor
Torque (Threaded style) = 14 N•m [10 ft-lb]
Pressure (mmHg) Pressure [inHg] Pressure (psig) Voltage (VDC)
0 0 0 0.75 to 1.20
646.48 25.45 12.5 1.60 to 2.10
1292.88 50.90 25 2.40 to 3.00
1939.36 76.35 37.5 3.25 to 3.85
2585.76 101.80 50 4.10 to 4.70
Rail Pressure Sensors, Front and Rear (UFD)
Torque = 14 N•m [10 ft-lb]
Pressure (kPa) Pressure [psig] Voltage (VDC)
0 0 0.50 to 0.70
345 50 1.20 to 1.50
690 100 1.95 to 2.30
1380 200 3.40 to 3.80
2070 300 4.20 to 4.70
Eengine Position Sensor (Crankshaft and Camshaft)
Torque = 25 N•m [18 ft-lb]
On Metal = 3.5 to 5.0 VDC
Off Metal = 0.0 to 2.2 VDC
Vehicle Speed Sensor
Torque = 47 N•m [35 ft-lb]
First Coil Resistance = 750 to 1100 Ohms
Second Coil Resistance = 1100 to 1500 Ohms
Water-In-Fuel Sensor
Description Voltage (VDC)
Probes in Water 0.50 to 3.00
Probes in Fuel 4.00 to 4.50

Last Modified:  20-Nov-2006
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