Unswitched direct to ECM with no other connections to the harness
No switches between keyswitch & ECM pinout
Master Disconnect in Positive Site not in Unswicthed Connection or Negative Site
ECM. Inputs & Outputs.
Input Sensors & Switches
Processing
Output: Example Example:: S.D.V., Timing & Metering Injector.
Sensoren en Actuatoren?
Sensoren.
Speed Sensors
2 Different Types
Variable Reluctance (Inductive).
Hall effect
Position Sensors.
Throttle Position Sensor
Temperature sensors.
Resistor is NTC
Coolant Temperature Sensor for: Engine protection. Engine Metring & Timing
Intake Manifold Temperature. Sensor toward the Centre of the Engine
Pressure sensors.
Gauge pressure Atmosferic pressure = reference Reading:Atmosferic is 100kPa. Gauge = 0 Vented by hole in sensor or wiring
Absolute Pressure. Near Vacuum on One Side Reads about 100kPa
Capicitance Sensor.
3 Wired Pressure Sensors Capacitance Disk Pressure to be measured on 1 site & Reference Pressure on the other site
2 Disks Toward/ Away from eachother depending on the Pressure. Capacitance Value Changes Intergrated Circuit Converts this Capacitance into a Voltage Signal
Left side of the Engine Below the ECM Altitude Derate Purpuse
Toward Front Engine
Optional Pressure Sensor for OEM
OEM’s Pressure Sensor not Installed Keep Shorting Plug on.
Combination Sensors.
Pressure & temperature sensor combination
Installed in Main Oil Riffle Engine Protection System.
ESS + EPS
Other Sensors.
Fluid Level Sensor
Actuatoren.
CAN Bus System. MULTIPLEXING
CAN • Controller Area Network • Digitale signals. • Multiplexing.
Traditionale communication.
Modern communication.
–Datalink: Term used to describe how devices communicate with each other also referred to as a network. –Terminations are required to minimize reflections on the datalink –J1939/11 requires two 120ohm terminations for the datalink.
Termination Plug/ Data Bus Terminal is a Resistor. Prevents Data Reflections (Echo)
Maximum Stub Lenght is 1 Meter
Communication over Two Wires.
Converting signals. • analog sensor signal
• fase 1: het analoge signaal bemonsteren ((‘samplen’) ‘samplen’)
Converting signals.
• fase 2: convert sample to binair number
• fase 3: digital signals from different components on wire MULTIPLEXING
SAE J 1587, J1708 & J1939
Standard ? Standard? Communication: Talking? Morse? Smoke Signals?
Protocol? What language are we using? Englisch? Dutch? Binair? Hexadecimale?
Nodes are connections to the Wiring Harness (Main Bus??)
Protocol op Wiring Diagram: Example!
J 1587
INLINE II
Protocol op Wiring Diagram: J 1939
+
ECM
_
J 1939 120 Ohm
120 Ohm Main Bus
Service Tool
Transmission
ABS
termination cap, blue insert, with 120Ω resistor between A and B
120
A
May not be fitted or hard wired in some applications
B
C On engine data link - Connection to service tool, orange cap insert Requires power normally supplied from weather pack connector by fuel pump
02 12
Can be extended up to cab i.e. with 9 Pin Deutsch connector where power could be supplied from terminals C ( + ) and D ( - )
J1939 ( + ) J1939 ( - ) J1939 SHEILD
44
A B C
termination cap, blue insert, with 120Ω resistor between A and B May not be fitted or hard wired in some applications
A
B
C
120
Data bus, up to 40m long Stubs should be no more than 1m Allows communication with other devices on J1939 data link
INLINE, INLINE I & II 9 Pin Deutsch Connector Datalink connector for Cummins Engines SAE J 1587 / J 1708 and SAE J 1939 Communication Voltage Supplies for Adaptor. A – Ground B – Unswitched Supply C - J 1939 Datalink (+) D - J1939 Datalink (-) E - J 1939 Shield F - J 1708 Datalink (+) G - J 1708 Datalink (-) H - Open J - Open
D E
C A
F G H
B J
INLINE II 3 Pin Deutsch Connector Datalink connector for Cummins Only SAE J 1939 Communication
No Voltage Supply. Needs separate supply
A - J 1939 Datalink (+) B - J 1939 Datalink (-) C - J1939 Bescherm mantel
