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Electronic Control System Gas Plus Engines – 018-001   Specifications

General Information

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 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 the service manual.

Electrical Specifications

 TOC

J1587 DATA LINK
Positive (+) wire to chassis ground: 4.0 to 5.0 VDC
Negative (-) wire to chassis ground: 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
5-VDC POWER SUPPLY (@ engine harness)
4.50 to 5.25 VDC
ALL CONTINUITY CHECKS
OK (no open circuit) if < 10 Ohms
ALL SHORTS TO GROUND
EPS/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

Sensor Specifications

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    ENGINE POSITION SENSOR

  • Coil resistance = 1000 to 2000 Ohms

    VEHICLE SPEED SENSOR

  • First coil resistance: 750 to 1500 Ohms
  • Second coil resistance: 1100 to 1500 Ohms

    FUEL CONTROL VALVE

  • Coil resistance = 2 to 5 Ohms

    FUEL SHUTOFF VALVE

  • Coil resistance = 12 to 20 Ohms

    WASTEGATE CONTROL VALVE

  • Coil resistance = 2 to 6 Ohms

    ACCELERATOR (Resistance for Closed/Open States)

  • ISS – maximum closed-circuit resistance < 125 Ohms
  • ISS – minimum open-circuit resistance > 100k Ohms

    ACCELERATOR AND REMOTE ACCELERATOR

  • Resistance between supply and return wires: 2000 to 3000 Ohms
  • Resistance between supply and signal wires (pedal released): 1500 to 3000 Ohms
  • Resistance between supply and signal wires (pedal depressed): 200 to 1500 Ohms

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

OIL / FUEL PRESSURE SECONDARY SENSOR
Pressure (kPa) Pressure [in Hg] Pressure [psia] Voltage (VDC)
101.36 29.93 14.70 0.97 to 1.01
172.38 50.90 25.00 1.31 to 1.36
344.75 101.80 50.00 2.12 to 2.21
517.13 152.70 75.00 2.94 to 3.06
689.50 203.60 100.00 3.76 to 3.91
FUEL PRESSURE PRIMARY SENSOR
Pressure (kPa) Pressure [in Hg] Pressure [psia] Voltage (VDC)
101.36 29.93 14.70 0.60 to 0.64
344.75 101.80 50.00 1.11 to 1.18
689.50 203.60 100.00 1.84 to 1.95
1034.25 305.40 150.00 2.56 to 2.72
1379.00 407.20 200.00 3.28 to 3.48
MIXER INLET PRESSURE / INTAKE MANIFOLD PRESSURE SENSOR
Pressure (kPa) Pressure [in Hg] Pressure [psia] Voltage (VDC)
82.74 24.43 12.00 1.42 to 1.50
101.36 29.93 14.70 1.63 to 1.73
137.90 40.72 20.00 2.04 to 2.16
206.85 61.08 30.00 2.81 to 2.99
275.80 81.44 40.00 3.59 to 3.81
EXHAUST BACK PRESSURE SENSOR
Pressure (kPa) Pressure [in Hg] Pressure [psia] Voltage (VDC)
82.74 24.43 12.00 2.12 to 2.25
101.36 29.93 14.70 2.67 to 2.84
110.32 32.58 16.00 2.94 to 3.12
124.11 36.65 18.00 3.34 to 3.55
137.90 40.72 20.00 3.75 to 3.98
ALL TEMPERATURE SENSORS
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

Last Modified:  08-May-2006
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