8/3/2019 ISB02 Engine Wiring Diagrams 11 X 17

1/9

CM850/870 Electronic SubsystemWiring Diagrams

Wiring Diagrams

2

Wiring Diagrams

OverviewThe Wiring Diagrams for the CM850/870 are in 7 pages. The documents are on larger

pages (11x17), so these pages should be printed separately if printing this document from

an electronic copy.

The outline for the diagrams:

Diagram page 1.

This is the main page for the OEM 50-Pin Connector. It shows the pins of the OEM 50-

Pin Connector which are common across all automotive engine platforms.

Diagram page 2.

This is part two of the OEM 50-Pin Connector. It shows the pins of the OEM 50-Pin

Connector which are not common across all platforms.

Diagram page 3.

Detail A - the ECM power and ground connections. A.1-A.3 cover the ISB02/ISC03/ISL03, and the ISX02 connections.

Diagram page 4.

Detail A, B - the ECM power and ground connections. A.4 covers the ISM02 connec-

tions. B covers the Intake Air Heater wiring for ISB02, ISC03 and ISL03.

Diagram page 5.

Detail C - the wiring for Engine Brakes. C.1-C.3 cover Exhaust Brake (not VGT brake)

wiring (ISB02/ISC03) and Engine Brake Selector Switch wiring (ISX02, ISM02/ISL03)

Diagram page 6.

Detail C - C.4 covers interfacing with electronic transmissions using the recommended

J1939 datalink. Other configurations are supported, but all diagrams have been replaced

with a text description due to the multiple ways to accomplish this interface. Detail D

covers WIF sensor connectionDiagram page 7.

Detail E, F and G. E covers Fuel Heater Wiring (ISB03, ISC03, ISL03 only), F cov-

ers Starter Lockout wiring, and G covers Datalink connector wiring.

8/3/2019 ISB02 Engine Wiring Diagrams 11 X 17

2/9

8/3/2019 ISB02 Engine Wiring Diagrams 11 X 17

3/9

8/3/2019 ISB02 Engine Wiring Diagrams 11 X 17

4/9

8/3/2019 ISB02 Engine Wiring Diagrams 11 X 17

5/9

8/3/2019 ISB02 Engine Wiring Diagrams 11 X 17

6/9

8/3/2019 ISB02 Engine Wiring Diagrams 11 X 17

7/9

8/3/2019 ISB02 Engine Wiring Diagrams 11 X 17

8/9

8/3/2019 ISB02 Engine Wiring Diagrams 11 X 17

9/9

Change Log

CM850/870 Electronic SubsystemWiring Diagrams

11

Change LogRevision 0

Document creation from diagrams for OEM Interfaces version 3.1.

Revision 1.0Yiping Zhuang 12-13-02

Wiring Diagrams - Revised Page 5, 6 and 7 to reflect that all Eaton, Meritor, and Alli-

son electronic controlled transmissions require J1939 communication. Other non-sub-

stantive changes to make the document compatible with splitting out the Wiring

Diagrams from the OEM Interfaces (Wills).

Revision 1.1Yiping Zhuang & Brian Whaley 4-1-03.

Wiring Diagrams - Automatic transmissions are no longer required to only use the J1939

interface to communicate with the engine controller. J1587 and hardwired controls may

also be used (changes made in Detail C.4 of OEM Wiring Diagram and deleted C.5).

Page 6 of the wiring diagram changed and the revision was incremented. All other

pages remained unchanged.