Fig 1: Cummins Engine Performance Wiring Diagram (ISB - CM 850 - 1 Of 5) J1939 ENGINE DATA LINK CONNECTOR C B
FUEL LIFT PUMP
EGR VALVE MOTOR
FUEL LIFT PUMP RELAY
VOLTAGE REGULATOR
FUEL LIFT PUMP
FUSE (NOT USED)
M
M A
A 2
A A C C N N
1
1
A A C C N N
7 8
N/A
B
A A C C N N
M
0 5 6 3 8 8
A A A A C C C C N N N N 2
A A C C N N
A A A A C C C C N N N N
1
A A C C N N
1
2
2
A A C C N N
A A C C N N
W/ 24 VOLT APPLICATION
W/ 12 VOLT APPLICATION A A C C N N
FUEL LIFT PUMP SUPPLY ELECTRONIC FUEL CONTROL ACTUATOR SIGNAL BAROMETRICPRESSURESIGNAL TURBOCHARGER ACTUATOR MOTOR SIGNAL TURBOCHARGER ACTUATOR MOTOR SIGNAL J19 39 ENGINE DATALINK (-) J1939 ENGINE DATA LINK (+) EGR VALVE MOTOR SIGNAL EGR VALVE MOTOR SIGNAL FUEL LIFT PUMP RETURN EGR D IFFERENTIAL PRESSURE SIGNAL WATER IN FUEL SIGNAL ENGINE COOL ANT TEMPERATURE SIGNAL ENGINE SPEED +5 VOLT SUPPLY ENGINE OIL PRESSURE SIGNAL EGR VALVE POSITION SIGNAL EXHAUST GAS PRESSURE SIGNAL EXHAUST BRAKE SIGNAL INTAKE MANIFOLD AIR TEMPERATURE SIGNAL RAIL FUEL PRESSURE SIGNAL ENGINEPOSITIONSIGNAL ENGINE SPEED SIGNAL EXHAUST BRAKE RETURN TURBOCHARGER POSITION SIGNAL
1
NCA
2
NCA
3
NCA
NCA
4
NCA
NCA
5
NCA
NCA
6
NCA
1 2 3
7 8
NCA
9
NCA
10
NCA
11
NCA
12
NCA
NCA
14
NCA
NCA
15
NCA
NCA
16
NCA
17
NCA
13
4 5 6
18 19
NCA
NCA
20
NCA
NCA
22
NCA
NCA
23
NCA
NCA
25
NCA
NCA
26
NCA
NCA
27
NCA
28
NCA
NCA
29
NCA
NCA
21
24
30
7 8 9 10 11 12 13 14
31 ELECTRONIC FUEL CONTROL ACTUATOR RETURN SENSOR +5 VOLT SUPPLY 1 TURBOCHARGER SPEED SIGNAL REAL TIME CLOC K BATTERY SUPPLY (OPTIONAL) SENSOR +5 VOLT SUPPLY 2 SENSOR RETURN 1
DIAGNOSTICTESTMODE/USER ACTIVATED DATALOGGER SIGNAL REMOTE ACCELERATOR SWITCH INPUT REMOTE PTO SWITCH SIGNAL BRAKE PEDAL POSITION SIGNAL AIR CONDITIONING PRESSURE SWITCH SIGNAL TWO-SPEED AXLE SWITCH ACCELERATOR PEDAL/LEVER POSITION SIGNAL SAE J1587 DATA LINK (+) IDLEVALIDATION IDLESIGNAL OEM SWITCH SIGNAL ACCELERATOR INTERLOCKSW/ENGINE TORQUE LIMIT SW SIG MAXIMUMENGINE SPEED/GOVERNOR TYPESWITCHSIGNAL CLUTCH PEDAL POSITION/ENGINE PROTECTION OVERRIDE SIGNAL CRUISE CONTROL/PTO ON/OFF SWITCH INPUT MANUAL FAN CONTROL SWITCH SIGNAL ENGINE BRAKE ON/OFF SW INPUT SWITCHEDO UTPUTSTEMPERATURESIGNAL SAE J1587 DATA LINK (-) +5 VOLT SUPPLY ACCELERATOR PEDAL/LEVER POSITION +5 VOLT SUPPLY ACCELERATOR PEDAL/LEVER POSITION RETURN CRUISE CONTROL/PTO RESUME/ACCELERATE SWITCH INPUT CRUISE CONTROL/PTO SET/COAST SW INPUT REMOTEACCELERATORPEDAL/LEVERSIGNAL MAGNETIC/DIGITALVEHICLE SPEED SENSSIGNAL( +) ENGINE COOLANT LEVEL SIGNAL FAN CLU TCH RETURN TACHOGRAPH SIGNAL OEM TEMPERATURE SIGNAL RETURN TRANSMISSION SHIFT CTRL RTN/SWITCHED OUTPUT RLY 1 RTN SW RETURN OEMPRESSURESIGNAL MAGNETIC VEHICLE SPEED SENS SIGNAL ( -) SAE J1939 DATA LINK SHIELD FAN CLUTCH SIGNAL KEY SWITCH SIGNAL INTAKE AIR HEATER SIGNAL TACHOMETER SIGNAL RETURN RED STOP LAMP SIGNAL AMBER WARNING LAMPSIGNAL
SAE J1939 DATA LINK (+) SAE J1939 DATA LINK (-) TRANSMISSION SHIFT CTRL SIG/SWITCHED OUTPUT RLY 1 SIG STARTER LOCKOUT RLY SIG/SWITCHED OUTPUT RLY 2 SIG WAIT-TO-START LAMP SIGNAL
A A A A A A A A A A C C C C C C C C C C N N N N N N N N N N
A C N
A C N
2
3
4
A A A A C C C C N N N N
A C N
1 FUEL PUMP ACTUATOR SIGNAL BAROMETRICPRESSURESIGNAL
2
NCA
NCA
3
NCA
NCA
4
1 2
5 6 SAE J1939 ENGINE D ATA LINK (-)
8 SAE J1939 ENGINE DATA LINK (+)
NCA
7 NCA
9 10
CATALYSTSOLUTION TANKHEATER RETURN
11
NCA
12 13
WATER IN FUEL SIGNAL ENGINE COOL ANT TEMPERATURE SIGNAL SENSOR SUPPLY 3 ENGINE OIL PRESSURE SIGNAL CATALYST SOLUTION LEVEL SIGNAL OIL LEVEL SENSOR SIGNAL CATALYST SOLUTION TANK HEATER SIGNAL ENGINE BRAKE SOLENOID 1 SIGNAL INTAKE MANIFOLD AIR TEMPERATURE SIGNAL RAIL FUEL PRESSURE SIGNAL CAMSHAFT POSITION SIGNAL CRANKSHAFTSPEEDSIGNAL ENGINE BRAKE SOLENOID 1 RETURN EXHAUST GAS TEMPERATURE 1 SIGNAL OIL LEVEL SENSOR 24 VOLT POWER SUPPLY FUEL PUMP ACTUATOR RETURN BAROMETRIC PRESSURE 5 VOLT SUPPLY REAL TIME CLOCK BATTERY SUPPLY SENSOR SUPPLY 2 SENSOR RETURN 1
14
NCA
NCA
15
NCA
NCA
16
NCA
NCA
17
NCA
3 4 5
18 19
NCA
20
NCA
21
NCA
22
NCA
23
NCA
NCA
25
NCA
NCA
26
NCA
NCA
27
NCA
NCA
28
NCA
24
6 7 8 9
29 30
NCA
31
NCA
32
NCA
NCA
33
NCA
NCA
NCA
NCA
37
NCA
NCA
38
NCA
NCA
42
NCA
NCA
43
NCA
44
NCA
45
NCA
46
NCA
47
NCA
NCA
48
NCA
NCA
34 35 36
39
10 11 12 13 14
40 41 REAL TIME CLOCK BATTERY RETURN CATALYST SOLUTION TEMPERATURE SIGNAL INTAKE MANIFOLD PRESSURE SIGNAL CYLINDER 1 DRIVER CYL 5 DRV (6 CLY)/CYL 3 DRV (4 CYL) SENSOR RETURN 2 CRANKSHAFT SPEED R ETURN EXHAUST GAS TEMPERATURE 2 SIGNAL CYLINDER 2 RETURN CYL 3 RTN (6 C LY)/CYL 4 RTN (4 CYL) CYLINDER 1 RETURN CYLINDER 2 DRIVER CYL 3 DRV (6 CLY)/CYL 4 DRV (4 CYL) CYLINDER 4 DRIVER CYL 6 DRV (6 CLY)/CYL 2 DRV (4 CYL) CYLINDER 4 RETURN CYL 6 RTN (6 C LY)/CYL 2 RTN (4 CYL)
NCA
49 50
NCA
51
NCA
52
NCA
53
NCA
54
NCA
55
NCA
56
NCA
57
NCA
58
NCA
59
NCA
60
NCA
CYL 5 RTN (6 C LY)/CYL 3 RTN (4 CYL) ENGINE HARNESS CONNECTOR ENGINE CONTROL MODULE
A A C C N N
A A C C N N
A A C C N N
A A C C N N
W/ 6 CYLINDER ENGINE
253244
W/ 4 CYLINDER ENGINE
A A C C N N
A A C C N N
A A C C N N
A A C C N N
A A C C N N
A A C C N N
A A C C N N
A A C C N N
6
5
3
1
2
3
4
1
FUEL INJ ECTORS
FUEL INJECTORS
A A C C N N
A A C C N N
4
2
FUELINJECTORS (W/ 6 CYLINDER ENGINE)
15 16
17 18
16/11/2016
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REAL TIME CLOCK BATTERY
1
2
A C N
A C N
ENGINE COOLANT TEMPERATURE SENSOR
CRANKSHAFT SPEED SENSOR
3
A C N
1
2
B
A A C C N N
A C N
BAROMETRIC PRESSURE SENSOR
A
1
A C N
2
3
A A C C N N
A C N
1 1 2
NCA
2
NCA
3 4 5 6 7 8 9 10 11 12 13
3 4 5
NCA
14
NCA
15
NCA
16 17 18 19 20 21 22
6 7 8 9
CONNECTS TO VEHICLE WIRING
NCA
23 24
NCA
25
NCA
26
NCA
27 28 29 30 31
10 11 12 13 14
NCA
32
NCA
33 34
NCA
35 36
NCA
37
NCA
38 39 40 41
15 16
42
NCA
43 44
NCA
45 46
17 18
NCA
47
NCA
NCA
48 49 50
IDLE VALIDATION O FF IDLE SIGNAL DIAGNOSTIC TEST MODE REMOTE ACCELERATOR SIGNAL REMOTE PTO SIGNAL BRAKE PEDAL POSITION SIGNAL AIR CONDITIONING PRESSURE SWITCH SIGNAL TWO SPEED AXLE SWITCH SIGNAL ACCELERATOR PEDAL/LEVER POSITION SIGNAL SAE J1587 DATA LINK (+) IDLEVALIDATION IDLESIGNAL OEM SWITCH SIGNAL ACCELERATOR INTERLOCK/ENGINE TORQUE LIMIT SIGNAL MAXIMUMENGINE SPEED/GOVERNOR TYPESIGNAL CLUTCH PEDAL POSITION/ENGINE PROTECTION OVERRIDE SIGNAL CRUISE CONTROL/PTO ON/OFF SIGNAL MANUAL FAN SWITCH SIGNAL ENG BRK SELECTOR SIG 1 & EXHAUST BRK ON/OFF SW INPUT SWITCHEDO UTPUTSTEMPERATURESIGNAL SAE J1587 DATA LINK (-) SENSOR SUPPLY 1 ACCELERATOR PEDAL/LEVER POSITION 5 VOLT SUPPLY ACCELERATOR PEDAL/LEVER POSITION RETURN CRUISE CO NTROL/PTO R ESUME/ACCELERATE SIGNAL CRUISE CONTROL/PTO SET/COAST SIGNAL REMOTEACCELERATORPEDAL/LEVELSIGNAL DIGITAL/MAGNETIC VEHICLE SPEED SIGNAL ENGINE COOLANT LEVEL SIGNAL FAN CLUTCH RETURN (OPTIONAL) TACHOGRAPH SIGNAL OEM TEMPERATURE SIGNAL RETURN TRANSMISSION SHIFT MODULATOR/SWITCHED OUTPUT RLY 1 RTN RETURN OEMPRESSURESIGNAL MAGNETIC VEHICLE SPEED SIGNAL ( -) SAE J1939 DATA LINK SHIELD FAN CLUTCH SIGNAL KEY SWITCH INPUT SIGNAL INTAKE AIR HEATER SIGNAL TACHOMETER SIGNAL RETURN RED STOP LAMP SIGNAL AMBER WARNING LAMPSIGNAL MALFUNCTION INDICATOR LAMP (MIL) SAE J1939 DATA LINK (+) SAE J1939 DATA LINK (-) TRANSMISSION SHIFT MODU LATOR/SWITCHED OUTPUT RLY 1 SIG STARTER LOC KOUT RELAY/SWITCHED OUTPUT RELAY 2 SIGNAL WAIT-TO-START LAMP SIGNAL
