CUMMINS

ISM CM875
(2003-2006)

Electrical Circuit Diagram

 How to Read This Diagram

SYMBOLS

Connector Splice
Name

Trip Master
(5927) Circuit
Pin Label Breaker

+12V Battery A
Fuse

Ignition B
Diode

J1708(-) C
Twisted Pair
Pin Connection Reference

J1708(+) D A (See Page 1) >> Passthrough Connector

Reference
Destination
Ground

Power
+
ABBREVIATION COLOR

RD RED A Reference
WH WHITE
OR ORANGE
YL/YE YELLOW
PK PINK
BK BLACK
GY GRAY
PU/VT PURPLE
BR/BN BROWN Component
GN GREEN Component
Name M67GA 18-OR
BU/BL BLUE 1
CRS Combustion Air Control
Valve 298-6410 N67DA 18-GN
Capital Abbreviation’s Represent Wire Main Color
Lower Case Abbreviation’s Represent Secondary Color Part 2
Number
Circuit Color
Component Gauge
Connection Number
CONNECTORS
 Page 01 of 08

ISM CM875 (2003-2006)

ECM Connector

Turbocharger Speed Signal (+) Turbocharger Speed

1 58 Signal (+)
Turbocharger Speed Turbocharger Speed Signal (–) Turbocharger Speed
Sensor 2 48 Signal (–)

Engine Position Sensor 2 Signal Engine Position Sensor 2

3 23 Signal
Engine Position Engine Position Sensor 2 Return
Sensor 2 2
Engine Position Sensor 2 +5 Volt Supply
1

Barometric Pressure Signal Barometric Pressure

3 54 Signal
Barometric Pressure Barometric Pressure Return
Sensor 2
Barometric Pressure +5 Volt Supply
1

Engine Oil Pressure Signal Engine Oil Pressure

3 46 Signal
Engine Oil Pressure Engine Oil Pressure Return
Sensor 2
Engine Oil +5 Volt Supply
1
Sensor Return #1
19 Sensor Return #1
Sensor +5 Volt Supply #1
17 Sensor +5 Volt Supply #1

Turbocharger Compressor Inlet Air Temperature Return

Turbocharger B 1
Compressor Inlet Air Turbocharger
Turbocharger Compressor Inlet Air Temperature Signal
Temperature Sensor
A 2 45 Compressor Inlet Air
Temperature Signal

Intake Manifold Air Temperature Signal

Intake Manifold Air

A
Temperature Sensor Intake Manifold Air Temperature Return Intake Manifold Air
B 43 Temperature Return

Water In Fuel Sensor Return

B
Water In Fuel Sensor
Water In Fuel Sensor Signal Water In Fuel Sensor
A 14 Signal

EGR Temperature Return

EGR Temperature
1
Sensor EGR Temperature Signal
2 47 EGR Temperature Signal

Engine Coolant Temperature Return

Engine Coolant
A
Temperature Sensor Engine Coolant Temperature Signal Engine Coolant
B 15 Temperature Signal

Engine Oil Temperature Return Engine Oil

A 22 Temperature Return
Engine Oil
Temperature Sensor Engine Oil Temperature Signal Engine Oil
B 13 Temperature Signal
 Page 02 of 08

ISM CM875 (2003-2006)

ECM Connector

Exhaust Gas Pressure Signal Exhaust Gas Pressure

3 57
Signal
Exhaust Gas Exhaust Gas Pressure Return
Pressure Sensor 2
Exhaust Gas Pressure +5 Volt Supply
1

Intake Manifold Pressure Signal Intake Manifold Pressure

3 44
Signal
Intake Manifold Intake Manifold Pressure Return
Pressure Sensor 2
Intake Manifold Pressure +5 Volt Supply
1
EGR Valve Position +5 Volt Supply
1
EGR Valve Position EGR Valve Position Signal EGR Valve Position
Sensor 2 24
Signal
EGR Valve Position Return
3

EGR Differential Pressure Signal EGR Differential Pressure

3 3 53
EGR Differential Signal
Pressure Sensor EGR Differential Pressure Return
(With Integrated 2 2
Jumper Harness EGR Differential Pressure +5 Volt Supply
1 1

EGR Differential Pressure Return

1
EGR Differential EGR Differential Pressure Signal
Pressure Sensor 2
EGR Differential Pressure +5 Volt Supply
3 Sensor Return #2
12 Sensor Return #2
Sensor +5 Volt Supply #2
16 Sensor +5 Volt Supply #2
EGR Valve Motor Signal (+) EGR Valve Motor Signal
2 56
(+)
EGR Valve Motor
EGR Valve Motor Signal (–) EGR Valve Motor Signal
1 59
(–)

Ground Terminal

Turbocharger Control Valve Supply Turbocharger Control

7 31 Valve Supply
Turbocharger Control Valve Signal Turbocharger Control
Turbocharger 9 21
Control Valve Valve Signal
Turbocharger Control Valve Return
12
Centinel Oil Control Valve Signal
Centinel Oil Control Valve
A 55 Signal
Centinel Oil Control
Valve Centinel Oil Control Valve Return
B
See Page 3
Engine Break Relay Return A
2
Engine Break Relay
Engine Break Relay Signal
32 Engine Break Relay Signal
1
 Page 03 of 09

ISM CM875 (2003-2006)

ECM Connector

Fuel Shutoff Valve Signal

Fuel Shutoff Valve 42 Fuel Shutoff Valve Signal

Cylinder #1 Injector Solenoid Signal Cylinder #1 Injector

01 11 Solenoid Signal
Cylinder Number 1
Cylinder #1 Injector Solenoid Return Cylinder #1 Injector
02 01 Solenoid Return

Cylinder #2 Injector Solenoid Signal Cylinder #2 Injector

03 02 Solenoid Signal
Cylinder Number 2
Cylinder #2 Injector Solenoid Return Cylinder #2 Injector
04 03 Solenoid Return

Cylinder #3 Injector Solenoid Signal Cylinder #3 Injector

05 05 Solenoid Signal
Cylinder Number 3
Cylinder #3 Injector Solenoid Return Cylinder #3 Injector
06 04 Solenoid Return

Cylinder #4 Injector Solenoid Signal Cylinder #4 Injector

07 07 Solenoid Signal
Cylinder Number 4
Cylinder #4 Injector Solenoid Return Cylinder #4 Injector
08 06 Solenoid Return

Cylinder #5 Injector Solenoid Signal Cylinder #5 Injector

09 08 Solenoid Signal
Cylinder Number 5
Cylinder #5 Injector Solenoid Return Cylinder #5 Injector
10 09 Solenoid Return

Cylinder #6 Injector Solenoid Signal Cylinder #6 Injector

11 10 Solenoid Signal
Cylinder Number 6
Cylinder #6 Injector Solenoid Return Cylinder #6 Injector
12 20 Solenoid Return

Engine Brake Solenoid #1 Signal Continued

A 13 A
From Page 2
Cylinder Numbers Engine Brake Solenoid #2 Signal Engine Brake Solenoid #2
1,2,3 Solenoids B 14 51 Signal
4,5,6 Solenoids

C 15

Engine Position Sensor #1 Signal Engine Position Sensor #1

3 29 Signal
Engine Position
Sensor 1 Engine Position Sensor #1 Return Engine Position Sensor #1
2 18 Return
Engine Position Sensor #1 +5 Volt Supply Engine Position Sensor #1
1 26 +5 Volt Supply

J1939 Engine Datalink (+)

A 50 J1939 Engine Datalink (+)

J1939 Engine J1939 Engine Datalink Shield

Datalink C 60 J1939 Engine Datalink
Shield
J1939 Engine Datalink (-)
B 40 J1939 Engine Datalink (-)
 Page 04 of 08

ISM CM875 (2003-2006) Typical Vehicle Chassis Wiring

(See OEM vehicle schematic for more info)

OEM Connector

Magnetic Vehicle B
Speed Sensor Magnetic Vehicle Speed Signal (+) Magnetic Vehicle Speed
A 27 Signal (+)
Magnetic Vehicle Speed Signal (-) Magnetic Vehicle Speed
B 36 Signal (-)

Engine Coolant Level Signal Engine Coolant Level

B 28 Signal
Engine Coolant Level
Sensor Engine Coolant Level Return Engine Coolant Level
A 32 Return

Digital Vehicle Speed Sensor +5 Volt Supply Digital Vehicle Speed

21 Sensor +5 Volt Supply

Digital Vehicle Speed Digital Vehicle Speed Sensor Signal Digital Vehicle Speed
27 Sensor Signal
Sensor
Digital Vehicle Speed Sensor Return

Tachograph +5 Volt Supply

Tachograph Signal
Tachograph 30 Tachograph Signal

Tachograph Return

Remote Accelerator Pedal/Lever +5 Volt Supply

Remote Accelerator
Remote Accelerator Pedal/Lever Signal Remote Accelerator
Pedal/Lever 26 Pedal/Lever Signal
Assembly
Remote Accelerator Pedal/Lever Return

Ambient Air Temperature Signal Ambient Air

B 19 Temperature Signal
Ambient Air
Temperature Sensor Ambient Air Temperature Return
A

OEM Temperature Signal

31 OEM Temperature Signal
OEM Temperature
Sensor OEM Temperature Return

Remote Accelerator Signal Remote Accelerator

03 Signal
Remote Accelerator
Switch Remote Accelerator Return

Remote PTO Signal

04 Remote PTO Signal
Remote PTO Switch
Remote PTO Return

B
See Page 5
 Page 05 of 08

ISM CM875 (2003-2006) Typical Vehicle Chassis Wiring

(See OEM vehicle schematic for more info)

OEM Connector

Centinel Oil Burn Level

12 Switch Signal
Bulkhead Connector Air Conditioning Pressure
Accelerator Assembly Williams 06 Signal
Accelerator Pedal/Lever Position +5 Volt Supply Accelerator Pedal/Lever
C C 22 Position +5 Volt Supply
Accelerator Pedal/Lever Position Signal Accelerator Pedal/Lever
A B 09 Position Signal
Accelerator Pedal/Lever Position Return Accelerator Pedal/Lever
Accelerator Pedal
B A 23 Position Return
Switch Assembly
Idle Validation Off Idle Signal Idle Validation Off Idle
D C 01 Signal
Idle Validation Idle Signal
E B 11 Idle Validation Idle Signal

F A

Accelerator Assembly Robert Shaw

5 C

3 B

Accelerator Pedal
4 A
Switch Assembly
2 C

8 B

1 A

Centinel Oil Burn Level Switch Signal

Centinel Oil Burn
Level Switch

Clutch Pedal Position/Engine Protection Override Signal Clutch Pedal Position/

Clutch Pedal 15 Engine Protection
Position/Engine Override Signal
Protection Override
Switch

Brake Pedal Position Signal Brake Pedal Position

05 Signal
Brake Pedal Position
Switch
Continued
From Page 4
B
Air Conditioning Pressure Signal
Air Conditioning
Pressure Switch Switch Return
34 Switch Return

Cruise Control/PTO See Page 6 CC/PTO Resume/

Cruise Control/PTO Resume/Accelerate/Increment Switch Signal (See Note)
Set/Resume Select 24 Accelerate/Increment
Switch Switch Signal
Cruise Control/PTO Set/Coast/Decrement Switch Signal (See Note) CC/PTO Set/Coast/
25
Decrement Switch Signal
Note : May be either increment or decrement depending on
the value of the ECM adjustable parameter “cruise control setup”
 Page 06 of 08

ISM CM875 (2003-2006) Typical Vehicle Chassis Wiring

(See OEM vehicle schematic for more info)

OEM Connector
Continued Bulkhead Connector
C
From Page 5

Cruise Control/PTO On/Off Switch Signal Cruise Control/PTO On/

16 Off Switch Signal
Cruise Control/PTO
On/Off Switch

Accelerator Interlock/Engine Torque Limit Signal Accelerator Interlock/

Accelerator 13 Engine Torque Limit
Interlock/Engine Signal
Torque Limit Switch

Engine Brake On/Off

Switch

Engine Brake Level Engine Brake Selector Signal #1 Engine Brake Selector
Switch
18 Signal #1

Engine Brake Selector Signal #2 Engine Brake Selector

08 Signal #2

Red Stop Lamp Signal

43 Red Stop Lamp Signal
Red Stop Lamp

Amber Warning Lamp Signal Amber Warning Lamp

44 Signal
Amber Warning
Lamp

OEM Lamp Signal

50 OEM Lamp Signal
OEM Lamp
D See Page 8

Diagnostic Test Mode/User Activated Datalogger Signal Diagnostic Test Mode/

Diagnostic Test 02 User Activated Datalogger
Mode/User Activated Signal
Datalogger Switch

Fan Control Switch Signal

17 Fan Control Switch Signal
Fan Control Switch

Maximum Engine Speed/Governor Type Switch Signal Maximum Engine Speed/

Maximum Engine 14 Governor Type Switch
Speed/Governor Signal
Type Switch

Tachometer Signal
41 Tachometer Signal
Tachometer
 Page 07 of 08

ISM CM875 (2003-2006) Typical Vehicle Chassis Wiring

(See OEM vehicle schematic for more info)

OEM Connector
Bulkhead Connector
Idle Shutdown Relay Signal Idle Shutdown Relay
48 Signal
Idle Shutdown Relay

Starter Lockout Relay Signal Starter Lockout Relay

49 Signal
Starter Lockout Relay
Relay Return (Optional)
42 Relay Return (Optional)

5A Keyswitch Input Signal

See Page 8 E 39 Keyswitch Input Signal
Fuse

Fan Control Signal

38 Fan Control Signal
Fan Control Solenoid
Fan Control Return (Optional) Fan Control Return
29 (Optional)

Ether Injection Signal

40 Ether Injection Signal
Ether Injection Unit
Ether Injection Return
33 Ether Injection Return

Not Connected
H
Not Connected
J
Battery (+)
B
Battery (-)
A
9-Pin Deutsch J1587 Datalink (+)
Connector F
J1587 Datalink (-)
G
J1939 Datalink (+) SAE J1939 Datalink (+)
C A 46 J1939 Datalink (+)

J1939 Datalink (-) SAE J1939 Datalink (-)

D B 47 J1939 Datalink (-)

J1939 Datalink Shld SAE J1939 Datalink Shield SAE J1939 Datalink Shield
E C 37

Not Connected
D
Not Connected
F
Battery (+)
6-Pin Deutsch
F B C
A
Connector E C Battery (-)
D E
Datalink (+) SAE J1587 Datalink (+)
A A 10 SAE J1587 Datalink (+)
Datalink (-) SAE J1587 Datalink (-)
B B 20 SAE J1587 Datalink (-)
 Page 08 of 08

ISM CM875 (2003-2006) Typical Vehicle Chassis Wiring

(See OEM vehicle schematic for more info)

Accessory Continued
D
From Page 6
Ignition Continued
Keyswitch E
From Page 7
Battery

OEM Power Connector

ECM Battery Return (-)

01
ECM Battery Return (-) Optional
- Ground Terminal 02
Battery
ECM Battery Supply (+) Optional
+ 03
30A ECM Battery Supply (+)
04
Fuse