ISB/ISBe Series Engines - 018-001 Specifications

General Information
Electrical Specifications
Sensor Specifications

General Information

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WARNING

This diagram is provided as a diagnostic tool for trained, experienced technicians only. Troubleshooting presents the risk of equipment damage, personal injury, or death. Troubleshooting must be performed by trained, experienced technicians. See important instructions in Service Manual.

Electrical Specifications

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Datalink

Positive (+) wire to chassis ground (J1587) 4.0 to 5.0 VDC

Negative (-) wire to chassis ground (J1587) 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

All Short To Ground

VSS circuits OK (no short circuit) if > 10M Ohms

All other circuits OK (no short circuit) if > 100k Ohms

Short Circuit To External Voltage

OK if < 1.5 VDC

Battery and ECM DC Voltage Supply

Range: 9.0 to 32.0, Minimum 9.0

5 V Power Supply Sensor and Switch (Except Idle Validation and Coolant Level Sensors)

@ ECM, 4.75 to 5.25 VDC

@ Harness, 4.50 to 5.25 VDC

Solenoids

Intake Air Heater

Coil Resistance (12-VDC system) = 0.09 to 0.11 Ohms

Coil Resistance (24-VDC system) = 0.18 to 0.22 Ohms

Injector

Coil Resistance = Less than 1 Ohms

Sensor Specifications

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Vehicle Speed Sensor
Torque = 47 N•m [35 ft-lb]
Coil Resistance:
First Coil Resistance = 750 to 1100 Ohms
Second Coil Resistance = 1100 to 1500 Ohms

Engine Speed Sensor and Engine Position Sensor
Torque = 8 N•m [71 in-lb]
Temperature (°C)	Temperature [°F]	Resistance (Ohms)
-30	-22	688
20	68	860
50	122	963

Oil Pressure/Temperature Sensor
Torque = 6 N•m [53 in-lb]
Pressure (kPa)	Pressure [psi]	Voltage (VDC)
0	0	0.52 to 0.93
172.37	25	1.72 to 2.25
344.74	50	2.91 to 3.56
517.11	75	4.10 to 4.88

All Temperature Sensors
Torque = 20 N•m [177 in-lb]
Temperature (°C)	Temperature [°F]	Resistance (Ohms)
0	32	5k to 7k
25	77	1700 to 2500
50	122	700 to 1000
75	167	300 to 450
100	212	150 to 220

Intake Manifold Pressure/Temperature Sensor
Torque = 6 N•m [53 in-lb]
Pressure (mmHg)	Pressure [inHg]	Voltage (VDC)
381.00	15	0.43 to 0.60
762.00	30	0.90 to 1.25
1143.00	45	1.40 to 1.93
1905.01	75	2.40 to 3.25
2540.01	100	3.10 to 4.22

Fuel Rail Pressure Sensor
Torque = 35 N•m [26 ft-lb]
Pressure (mPa)	Pressure [psi]	Voltage (VDC)
0	0	0.50
40	5801	1.39
70	10153	2.06
100	14504	2.72
140	20305	3.61
180	26107	4.50

Accelerator Pedal (IVS, ISS, & APS)

Idle Validation Circuit Resistance: For ON and OFF-IDLE states
- ISS – MAX Closed Circuit Resistance < 125 Ohms
- ISS – MIN Open Circuit Resistance > 100k Ohms

Accelerator Pedal and Remote Accelerator

Accelerator Position Sensor Coil Resistance:
- Between supply and return wires: 2000 to 3000 Ohms
- Between supply and signal wires (released pedal): 1500 to 3000 Ohms
- Between supply and signal wires (depressed pedal): 200 to 1500 Ohms

NOTE: Released resistance minus depressed resistance must be 1000 Ohms.

Last Modified: 06-Jan-2006

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ISB/ISBe Series Engines – 018-001 Specifications

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