16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1

7 CONNECTOR CIRCUIT POSITION CHART

L L
TERMINAL INFORMATION FOR: J02-01
K333-185, BLACK, (5 CAVITIES) 17 CONNECTOR CIRCUIT POSITION CHART
11 CONNECTOR CIRCUIT POSITION CHART
TELLTALE RELAY
TERMINAL INFORMATION FOR: P003
4 TERM CIRCUIT NO. CIRCUIT DESCRIPTION TERMINAL INFORMATION FOR: P102 16-04994, BLACK, (6 CAVITIES)
(87)
1 WHT4323-0 GROUND P20-1158-204 , GRAY, (4 CAVITIES) THROTTLE PEDAL SENSOR
3 ENG ECM (PWR) "PORT C03"
(87A) 5 4 BRN4323-1 LOW FUEL PRESSURE TELLTALE TERM CIRCUIT NO. CIRCUIT DESCRIPTION
(86) TERM CIRCUIT NO. CIRCUIT DESCRIPTION
2 2 GRA4323-1 LOW FUEL PRESSURE RELAY 1 4 1 WHT3111-2 ECM SUPPLY RETURN (-)
(85)
5 ORN3840-2 RELAY IGN F A A BLU3141-2 APS SIGNAL 1
1
(30)
2 WHT3111-1 ECM SUPPLY RETURN (-)
B GRN3141-2 APS GROUND 1
K MATING VIEW
2 3
3 RED3111-2 ECM SUPPLY (+)
C VIO3141-2 APS SUPPLY (+5V) 1
K
4 RED3111-1 ECM SUPPLY (+) MATING VIEW
MATING VIEW D VIO3142-2 APS SUPPLY (+5V) 2
8 CONNECTOR CIRCUIT POSITION CHART E GRN3142-1 APS GROUND 2
F BLU3142-2 APS SIGNAL 2
TERMINAL INFORMATION FOR: P100
P20-1133-23-5-0 , BLACK, (23 CAVITIES) 12 CONNECTOR CIRCUIT POSITION CHART GENERAL NOTES:
TOP 23-WAY ECM CONNECTOR
TERMINAL INFORMATION FOR: P124 1) USE ON B-CAB FAMILY WITH NAMUX II INSTRUMENTATION
TERM CIRCUIT NO. CIRCUIT DESCRIPTION
16-06777, GRAY, (12 CAVITIES) WITH CUMMINS ISX12-G ELECTRONIC ENGINES EQUIPPED
A ORN3114-0 ECU WAKE UP 18 CONNECTOR CIRCUIT POSITION CHART
REMOTE PTO / THROTTLE WITH CM2180A CONTROLLER.
J F BLU4594-0 O2 SENSOR OUTLET SIGNAL TERM CIRCUIT NO. CIRCUIT DESCRIPTION TERMINAL INFORMATION FOR: P109
J
2) HOW TO USE THIS DIAGRAM:
X G VIO3141-0 PEDAL SUPPLY #1 (+5V) 6 GRA3143-1 REMOTE THROTTLE ENABLE K333-550-206 , BLACK, (6 CAVITIES)
K W EACH CONNECTOR HAS A DISTINCT ALPHANUMERIC
H GRN3119-0 COMMON RTN #4 (TEMP/LEVEL) ENGINE FUSES
L J V 10 VIO3114-2 5V COMMON "REFERENCE DESIGNATOR" OR "REF_DES" ASSOCIATED
B H
M U J GRN3141-0 PEDAL SENSOR RETURN #1 TERM CIRCUIT NO. CIRCUIT DESCRIPTION WITH IT. USE THIS REF_DES TO FIND CONNECTOR
C A G 7 6 3 GRN3115-4 COMMON RTN #1 (SWITCH)
B RED1210-3 POWER, BATTERY BUS INFORMATION IN THE CONNECTOR TABLE.
N
D F
T K VIO3142-3 5V SUPPLY 4 BLU3144-0 RMT THROTTLE POS SIGNAL
O E S N YEL3191-0 ENGINE FAN CLUTCH D RED1210-4 POWER, BATTERY BUS
5 GRA3511-2 PTO ON/OFF 3) X DESIGNATES A REFERENCE POINT TO ANOTHER
P R F A RED3111-5 POWER, ENGINE ECU
Q
P GRN3116-1 FAN RETURN 7 ORN1229-2 IGN (SWITCH) POWER SHEET OR DIAGRAMS.
12 1
S VIO4594-0 O2 HEATER SUPPLY C RED3111-6 POWER, ENGINE ECU
8 WHT1513-6 GROUND 4) DENOTES A TWISTED PAIR OF WIRES.
MATING VIEW MATING VIEW
T BLU3144-0 RMT THROTTLE POS SIGNAL 11 GRN3117-0 COMMON RTN #3 (SENSOR)
I U GRA3143-0 REMOTE THROTTLE ON/OFF DENOTES A TWISTED PAIR OF JACKETED WIRES. I
12 GRA3143-0 REMOTE THROTTLE ON/OFF
W BLU3142-0 PEDAL POSITION SENSOR #2
DENOTES OPTIONAL WIRE. MAY OR MAY NOT
X BLU3141-0 PEDAL POSITION SENSOR #1 EXIST, DEPENDS ON OPTION CONFIGURATION.
L GRN3142-2 COMMON RTN #3 (SENSOR)
13 CONNECTOR CIRCUIT POSITION CHART 5) ALL CONNECTOR ENDS SHOWN IN MATING VIEW.
L GRN3142-3 COMMON RTN #3 (SENSOR)
A
Q BLU4564-1 COOLANT SENSOR SIG TERMINAL INFORMATION FOR: P112 6) SWITCH LIGHTING CIRCUIT NOT SHOWN.
K333-553, BLACK, (3 CAVITIES) SEE INTERIOR LIGHTING DIAGRAM.
R GRN3213-0 O2 HEATER RETURN
COOLANT LEVEL SENSOR MATING VIEW
9 CONNECTOR CIRCUIT POSITION CHART TERM CIRCUIT NO. CIRCUIT DESCRIPTION
H B BLU4564-1 COOLANT SENSOR SIG H
TERMINAL INFORMATION FOR: P101 C A C GRN4564-1 COOLANT SENSOR RTN
P20-1133-31-5-0 , BLACK, (31 CAVITIES) A VIO4564-1 COOLANT SENSOR +5V
BOTTOM 31-WAY ECM CONNECTOR 19 CONNECTOR CIRCUIT POSITION CHART
TERM CIRCUIT NO. CIRCUIT DESCRIPTION MATING VIEW TERMINAL INFORMATION FOR: P166
1 BRN4312-0 STOP ENGINE LAMP P20-1238-1206G2 , GRAY, (6 CAVITIES)
2 BRN4311-0 CHECK ENGINE LAMP OUTLET EGO AND TEMP SENSORS
20 31
21 8 30
5 BLU4586-0 VEHICLE SPEED SENSOR (+) TERM CIRCUIT NO. CIRCUIT DESCRIPTION
9 19

22
10
3
2
7
18
29 6 GRN4586-0 VEHICLE SPEED SENSOR (-) 14 CONNECTOR CIRCUIT POSITION CHART 1 6 3 GRN3213-0 O2 HEATER RETURN
11 1 17
1 GRN5494-1 COMMON RTN #4 (TEMP/LEVEL)
G 23
12
4
5
6
16
28 11 GRA7131-0 AC HP SW/ECM FAN CTL TERMINAL INFORMATION FOR: P106 G
14 BLU3213-0 CAT TEMP SENSOR 2 GRN4594-0 COMMON RTN #4 (TEMP/LEVEL)
24
13
14
15
27
K333-566, NATURAL, (6 CAVITIES)
25 26
18 GRA3631-0 2-SPEED AXLE SMARTWHEEL MUX MODULE 3 4 4 BLU3213-0 CAT TEMP SENSOR
19 GRN3115-0 COMMON RTN #1 (SWITCH) TERM CIRCUIT NO. CIRCUIT DESCRIPTION MATING VIEW 5 BLU4594-0 O2 SENSOR OUTLET SIGNAL
MATING VIEW 4 6 1 E183MPX-0 PROPRIETARY DATA BUS (+) 6 VIO4594-0 O2 HEATER SUPPLY
23 GRA3511-0 PTO ON/OFF
1 3 2 E182MPX-0 PROPRIETARY DATA BUS (-)
28 VIO0831-0 J1587 DATA LINK (+)
29 GRN0831-0 J1587 DATA LINK (-) MATING VIEW
4 BRN4323-0 LOW FUEL PRESSURE LAMP
27 ORN3112-4 ECU IGNITION PWR TERMINAL INFORMATION FOR: J01
F 30 ORN3112-3 ECU IGNITION PWR
P20-1238-1106G1 , GRAY, (6 CAVITIES)
CHASSIS CONNECTION TO ENGINE HARN
F
31 ORN3840-0 MAF SENSOR IGN 15 CONNECTOR CIRCUIT POSITION CHART
TERM CIRCUIT NO. CIRCUIT DESCRIPTION
TERMINAL INFORMATION FOR: J106 1 GRN4594-2 COMMON RTN #4 (TEMP/LEVEL)
10 CONNECTOR CIRCUIT POSITION CHART P20-1085, BLACK, (4 CAVITIES) 6 1
2 GRN4594-1 COMMON RTN #4 (TEMP/LEVEL)
SMARTWHEEL SWITCH MODULE
TERMINAL INFORMATION FOR: P103 3 GRN3213-1 ECM RETURN (SOL/REL1)
P20-1133-47-5-2 , BLACK, (47 CAVITIES) TERM CIRCUIT NO. CIRCUIT DESCRIPTION
D 4 BLU3212-0 CAT TEMP SENSOR RETURN
IP HARNESS 3
4 5 BLU4594-1 OUTLET 02 SENSOR SIGNAL
TERM CIRCUIT NO. CIRCUIT DESCRIPTION A E183MPX-0 PROPRIETARY DATA BUS (+)
A MATING VIEW
6 VIO4594-1 COL HEATER SUPPLY
1 ORN1229-2 IGN (SWITCH) POWER B E182MPX-0 PROPRIETARY DATA BUS (-)
E 35
36
34
33
47
46
13 VIO3142-0 5V SUPPLY MATING VIEW E
20
21 8 32 34 GRN3142-3 COMMON RTN #3 (SENSOR)
22 19 31
9 2 2 VIO0831-0 J1587 DATA LINK (+)
10 18
37 23 3 30 45
3 GRN0831-0 J1587 DATA LINK (-) 20 CONNECTOR CIRCUIT POSITION CHART
7 16 CONNECTOR CIRCUIT POSITION CHART
24 11 1 17 29
38 44 5 ORN3971-0 IGN PWR (MISC)
12 4 6 16 TERMINAL INFORMATION FOR: J001 TERMINAL INFORMATION FOR: P08
11 GRA3143-1 REMOTE THROTTLE ENABLE P20-6120, BLACK, (4 CAVITIES)
39 25 13 5 15 28 43 K333-580, BLACK, (6 CAVITIES)
12 VIO3141-0 PEDAL SUPPLY #1 (+5V) FOOT THROTTLE EXT CONNECTION TO IP HARNESS OUTLET O2 SENSOR
40 14 27 42 14 BLU3142-0 PEDAL POSITION SENSOR #2 TERM CIRCUIT NO. CIRCUIT DESCRIPTION
TERM CIRCUIT NO. CIRCUIT DESCRIPTION
26 41 18 GRA3511-1 PTO ON/OFF 1 VIO3142-2 APS SUPPLY (+5V) 2
D 21 ORN3114-0 ECU WAKE UP 6 1 2 GRN3142-1 APS GROUND 2 C A A GRN4594-2 COMMON RTN #4 (TEMP/LEVEL) D
MATING VIEW 22 BLU3141-0 PEDAL POSITION SENSOR #1 4 3 3 BLU3142-2 APS SIGNAL 2 D B B BLU4594-1 OUTLET 02 SENSOR SIGNAL
23 GRN3141-0 PEDAL SENSOR RETURN #1 4 GRN3141-2 APS GROUND 1 C VIO4594-1 COL HEATER SUPPLY
MATING VIEW MATING VIEW
30 GRN0812-4 J1939 POWERTRAIN (-) 5 VIO3141-2 APS SUPPLY (+5V) 1 D GRN3213-1 ECM RETURN (SOL/REL1)
31 YEL0812-4 J1939 POWERTRAIN (+) 6 BLU3141-2 APS SIGNAL 1
34 GRN3115-2 COMMON RTN #3 (SENSOR)
42 BRN4311-0 CHECK ENGINE LAMP
43 BRN4312-0 STOP ENGINE LAMP
TERMINAL INFORMATION FOR: P001
C K333-581, BLACK, (6 CAVITIES)
C
TERMINAL INFORMATION FOR: J103
IP HARN CONNECTION TO FOOT THROTTLE EXT HARN
P20-1134-47-3-0 , BLACK, (47 CAVITIES)
FIREWALL CONNECTION TO ENGINE HARNESS TERM CIRCUIT NO. CIRCUIT DESCRIPTION
TERM CIRCUIT NO. CIRCUIT DESCRIPTION
KEYWAY 1 ORN1229-1 IGN SWITCHED POWER 1 VIO3142-1 PT SUPPLY #2 (+5V)
1 6
12 VIO3141-1 PT SUPPLY #1 (+5V) 2 GRN3142-0 PT RETURN #2
3 4 3 BLU3142-1 PT SENSE POSITION #2
47 34 35 13 VIO3142-1 PT SUPPLY #2 (+5V)
46 33 20 36 MATING VIEW
32 8 21 14 BLU3142-1 PT SENSE POSITION #2 4 GRN3141-1 PT RETURN #1
31 19 22
18 2 9 10 21 ORN3112-1 ECU WAKE UP 5 VIO3141-1 PT SUPPLY #1 (+5V)
B 45 30
7 3
23 37
11 24 22 BLU3141-1 PT SENSE POSITION #1 6 BLU3141-1 PT SENSE POSITION #1
B
29 17 1
44 38
16 6 4 12 23 GRN3141-1 PT RETURN #1
43 28 15 5 13 25 39 30 GRN0831-2 J1939 POWERTRAIN (-)
42 27 14 31 YEL0812-2 J1939 POWERTRAIN (+)
40
41 26 34 GRN3115-1 COMMON RTN #1 (SWITCH)
1. THIS DRAWING AND THE INFORMATION CONTAINED HEREIN
TOLERANCES THIRD ANGLE PROJECTION
42 BRN4311-1 CHECK ENGINE LAMP ARE PROPRIETARY TO PACCAR INC UNLESS OTHERWISE NOTED DRAWING REV
AND SHALL NOT BE REPRODUCED, COPIED OR DISCLOSED, UNLESS OTHERWISE SPECIFIED
IN WHOLE OR IN PART, OR USED FOR MANUFACTURE OR FOR
ANGLE = # 1
43 BRN4312-1 STOP ENGINE LAMP
P94-2015 A
OTHER PURPOSE WITHOUT THE WRITTEN PERMISSION OF
PACCAR INC. (X) = # 1
MATING VIEW 2. DIMENSIONING AND TOLERANCING PER PACCAR CS0108.
3. REMOVE ALL BURRS. BREAK SHARP EDGES.
(X.X) = # 0.5 DO NOT SCALE DRAWING DIMENSION UNITS MILLIMETERS
4. PART IDENTIFICATION AND TRACEABILITY REQUIREMENTS TITLE

A A
TO COMPLY WITH PACCAR CPS0098.

DIAG - ENG, ISX12-G

5. THIS DRAWING/SPECIFICATION USES SYMBOLS TO CLASSIFY
CHARACTERISTICS. THESE SYMBOLS ARE DEFINED IN THE
PACCAR SUPPLIER QUALITY STANDARD. SCALE NONE
6. EMISSION-RELATED PART. CODE: N DWG
SEE PACCAR CPS0374 FOR REQUIREMENTS. DRAWING VERSION A.6 SHEET 1 OF 7 SIZE

A0
16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1
 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1

21 CONNECTOR CIRCUIT POSITION CHART

L L
TERMINAL INFORMATION FOR: P105
P20-1051, NATURAL, (14 CAVITIES)
CONNECTOR INFORMATION FOR DIAGRAM: P94-2015 SMARTWHEEL MUX MODULE USAGE NOTE:
TERM CIRCUIT NO. CIRCUIT DESCRIPTION
USE ON B-CAB FAMILY WITH NAMUX II INSTRUMENTATION
NUMBER OF ON PART
REF_DES DESCRIPTION LOCATION OF CONNECTOR WITH CUMMINS ISX12-G ELECTRONIC ENGINES EQUIPPED
CAVITIES SHEET NUMBER 14 7 1 E141CT-1 CRUISE RESUME WITH CM2180A CONTROLLER.
J001 6 4 K333-580 BLACK, DEUTSCH DT SERIES, SEALED DRIVER SIDE ABOVE THROTTLE PEDAL 3 E140CT-1 CRUISE SET
J002 1 6 K333-33 MOLDED, FEMALE BULLET BEHIND DASH AREA #2 5 E139CT-1 CRUISE ON/OFF
J004 1 5 P20-1112 BLACK, AMP 1/4" RECEPTACLE CLUTCH PEDAL BRACKET 7 E69CM-1 SWITCH COMMON
K J005 1 5 P20-1112 BLACK, AMP 1/4" RECEPTACLE CLUTCH PEDAL BRACKET 9 E98ER-0 ENG RETARDER (MED-HI)
K
J007 10 5 P20-1191-3 BLACK, PACKARD, METRI-PACK 630 SERIES, UNSEALED BEHIND DASH AREA #4 8 1 10 E69CM-2 SWITCH COMMON 24 CONNECTOR CIRCUIT POSITION CHART
J008 10 5 P20-1191-3 BLACK, PACKARD, METRI-PACK 630 SERIES, UNSEALED BEHIND DASH AREA #4 MATING VIEW 11 E96ER-0 ENG RETARDER (LOW-HI)
J009 10 5 P20-1191-3 BLACK, PACKARD, METRI-PACK 630 SERIES, UNSEALED BEHIND DASH AREA #4 TERMINAL INFORMATION FOR: J023
12 ACC-1 ACC PWR
P20-1172-1240 , BLACK, (40 CAVITIES)
J01 6 4 P20-1238-1106G1 GRAY, DEUTSCH, DTM SERIES, SEALED NEAR FIREWALL, ENGINE SIDE 14 P18WL-4 IGN PWR, INDIC/WARN LPS CECU 4 (D)
J01-01 2 4 K333-550-102 BLACK, PACKARD WEATHER PACK, SEALED FIREWALL
TERM CIRCUIT NO. CIRCUIT DESCRIPTION
J011 10 5 P20-1191-3 BLACK, PACKARD, METRI-PACK 630 SERIES, UNSEALED BEHIND DASH AREA #2 10 20 30 40
J013 10 5 P20-1191-3 BLACK, PACKARD, METRI-PACK 630 SERIES, UNSEALED BEHIND DASH AREA #4 22 CONNECTOR CIRCUIT POSITION CHART
10 GRA3161-0 CRUISE ON/OFF
J014 10 5 P20-1191-3 BLACK, PACKARD, METRI-PACK 630 SERIES, UNSEALED BEHIND DASH AREA #4
J J02-01 5 4 K333-185 BLACK, PACKARD METRICPACK, UNSEALED DASH
TERMINAL INFORMATION FOR: J021
P20-1172-1224 , BLACK, (24 CAVITIES)
15 BRN4311-1 CHECK ENGINE LAMP J
16 BRN4312-1 STOP ENGINE LAMP
J021 24 5 P20-1172-1224 BLACK AMP, MQS SERIES, UNSEALED ECU HOTEL, CAB CECU 2 (B) CECU 2 (B)
J023 40 4 P20-1172-1240 BLACK AMP, MQS SERIES, UNSEALED ECU HOTEL, CAB CECU 4 (D) TERM CIRCUIT NO. CIRCUIT DESCRIPTION
J099 18 5 P20-1131-1518 GRAY, AMP, MCP SERIES, UNSEALED BEHIND DASH AREA #4
6 12 18 24
J10 2 4 P20-6121 BLACK, FCI APEX, SEALED CATALYTIC CONVERTER 8 GRA3162-0 CRUISE SET/ACCELERATE
J100 2 4 K333-562-102-1 LT-GRA, PACKARD, METRI-PACK 150 SERIES, SEALED ENGINE, TOP FRONT RH SIDE 9 GRA3163-0 CRUISE RESUME/DECELERATE
J103 47 4 P20-1134-47-3-0 BLACK, DEUTSCH, HDP20 SERIES, RECEPTACLE, SEALED FIREWALL, CAB SIDE 11 GRA3131-0 ENGINE RETARDER LOW/HI 1 11 21 31
J105 18 6 P20-1131-1518 GRAY, AMP, MCP SERIES, UNSEALED BEHIND DASH AREA #4 12 GRA3132-0 ENGINE RETARDER MED/HI MATING VIEW
J106 4 6 P20-1085 BLACK, PACKARD, METRI-PACK 150 SERIES, UNSEALED STEERING COLUMN 13 GRA3195-0 CLUTCH POSITION
I 17 GRA3192-0 ENGINE FAN OVERRIDE
I
J113 2 4 K333-549-102 BLACK, PACKARD, METRI-PACK 280 SERIES, UNSEALED BEHIND DASH AREA #2 1 7 13 19
J124 12 3 16-06778 GRAY, DEUTSCH, DT SERIES, PLUG FIREWALL, LH SIDE MATING VIEW 18 GRA3222-0 FORCE REGENERATION
J141 2 4 K333-562-102-1 LT-GRAY, PACKARD, METRI-PACK 150 SERIES, SEALED ENGINE, TOP FRONT RH SIDE 19 GRA3223-0 INHIBIT REGENERATION
25 CONNECTOR CIRCUIT POSITION CHART
J142 2 3 P20-1158-102 GRAY, DEUTSCH, DTP SERIES, SEALED FIREWALL
J143 2 4 K333-550-102 BLACK, PACKARD, METRI-PACK 280 SERIES, SEALED ENGINE, MIDDLE TOP FRONT LH SIDE NEAR POWER STEERING PUMP TERMINAL INFORMATION FOR: P144
23 CONNECTOR CIRCUIT POSITION CHART
J145 2 3 K183-154-102 BLACK, PACKARD, METRI-PACK 280 SERIES, SEALED ENGINE, LH SIDE P20-1252, GRAY, (3 CAVITIES)
J35 1 4 K333-54 RING, TERMINAL, (5/16") FIREWALL GROUND STUD, ENGINE SIDE TERMINAL INFORMATION FOR: J007 POWER STEERING TEMP SW
P20-1191-3, BLACK, (10 CAVITIES) A C TERM CIRCUIT NO. CIRCUIT DESCRIPTION
P001 6 4 K333-581 BLACK, DEUTSCH, DT SERIES, SEALED DRIVER SIDE BEHIND DASH ABOVE THROTTLE PEDAL
CRUISE SET/RESUME SW
H P002 1 6 K333-41 BLACK, MOLDED, MALE BULLET BEHIND DASH AREA #2
7 9 TERM CIRCUIT NO. CIRCUIT DESCRIPTION H
P003 6 4 16-04994 BLACK, METRI-PACK 150 SERIES, SEALED DRIVER SIDE BEHIND DASH ABOVE THROTTLE PEDAL A GRA7131-3 A/C HP SWITCH FAN CTL
4 1

P006 1 5 K333-598 BLACK, ELECTRO-WIRE BEHIND DASH AREA #2 C GRA7131-4 A/C HP SWITCH FAN CTL
5B 2B
1 E141CT-0 CRUISE RESUME/DECELERATE
P007 1 5 K333-598 BLACK, ELECTRO-WIRE BEHIND DASH AREA #2 6 3 3 E140CT-0 CRUISE SET/ACCELERATE
P01-1 1 4 K333-126 BLACK, MOLDED BULLET, SEALED FIREWALL, NEAR FUSE BOX 8 10
7 GND_C-1 GNDS, INSTRUMENT PANEL MATING VIEW
P02-1 1 4 K333-126 BLACK, MOLDED BULLET, SEALED FIREWALL, NEAR FUSE BOX MATING VIEW
2B E69CM1-1 SWITCH COMMON
P03-01 2 4 P20-1079 NATURAL, MOLEX MINI FIT JR, UNSEALED DASH
P08 4 4 P20-6120 BLACK, METRIPACK 150 SERIES, SEALED CATALYTIC CONVERTER
TERMINAL INFORMATION FOR: J008
P099 18 5 P20-1132-1518 GRAY, AMP, MCP SERIES, UNSEALED BEHIND DASH AREA #4 26 CONNECTOR CIRCUIT POSITION CHART
P20-1191-3, BLACK, (10 CAVITIES)
G P100 23 3 P20-1133-23-5-0 BLACK, DEUTSCH, HDP SERIES, SEALED ENGINE, LH SIDE CRUISE ON/OFF SW G
P101 31 3 P20-1133-31-5-0 BLACK, DEUTSCH, HDP SERIES, SEALED ENGINE, LH SIDE 7 9 TERM CIRCUIT NO. CIRCUIT DESCRIPTION TERMINAL INFORMATION FOR: J099
P102 4 3 P20-1158-204 GRAY, DEUTSCH, DTP SERIES, SEALED ENGINE, LH SIDE 4 1 P20-1131-1518 , GRAY, (18 CAVITIES)
ENGN SWITCH PANEL HARN
P103 47 3 P20-1133-47-5-2 BLACK, DEUTSCH, HDP20 SERIES, SEALED FIREWALL 5B 2B
6 E69CM1-2 SWITCH COMMON
TERM CIRCUIT NO. CIRCUIT DESCRIPTION
P105 14 6 P20-1051 NATURAL, MOLEX MINI FIT, UNSEALED BEHIND HEATER CONTROLS 6 3 7 GND_C-2 GNDS, INSTRUMENT PANEL
8 10 1 GND_C-0 GNDS, INSTRUMENT PANEL
P106 6 6 K333-566 NATURAL, MOLEX MINI FIT, UNSEALED BEHIND HEATER CONTROLS 2B P18WL-1 PWR, WARN LMPS
MATING VIEW 1 16 2 P18WL-0 PWR, WARN LMPS
P108 2 3 K333-562-202-1 GRAY, PACKARD, METRI-PACK 150 SERIES, SEALED ENGINE 5B E139CT-0 CRUISE ON/OFF
4 ER98ER-0 ENGINE RETARDER MED/HI
P109 6 3 K333-550-206 BLACK, PACKARD, METRI-PACK 280 SERIES, SEALED FIREWALL, ENGINE SIDE ON FUSE PANEL ASSY
5 ER96ER-0 ENGINE RETARDER LOW/HI
P112 3 3 K333-553 BLACK, PACKARD, METRI-PACK 150 SERIES, SEALED ENGINE, FRONT
F P113 2 4 K333-549-202 BLACK, PACKARD, METRI-PACK 280 SERIES, UNSEALED BEHIND DASH AREA #2 TERMINAL INFORMATION FOR: J009 2 17 7 E69CMI-0 SWITCH COMMON F
P20-1191-3, BLACK, (10 CAVITIES) 9 E31CT-0 GNDS, INSTRUMENT PANEL
P114 2 3 P20-1193-1202G BLACK, AMP, SUPERSEAL SERIES, SEALED ENGINE, LH SIDE ENGINE BRAKE SEL SW
3 10 E140CT-0 CRUISE SET/ACCELERATE
P118 2 3 K333-516 BLACK, PACKARD, METRI-PACK 150 SERIES, SEALED ENGINE TERM CIRCUIT NO. CIRCUIT DESCRIPTION 18
7 9 MATING VIEW 11 E141CT-0 CRUISE RESUME/DECELERATE
P120 2 3 K333-550-202 BLACK, PACKARD, METRIPACK 280 SERIES, SEALED FIREWALL
4 1
12 E139CT-0 CRUISE ON/OFF
P124 12 3 16-06777 GRAY, DEUTSCH, DT SERIES, SEALED FIREWALL, LH SIDE 3 ER98ER-0 ENGINE RETARDER MED/HI
5B 2B
P125 3 3 P20-1076 BLACK, DEUTSCH, DT SERIES, SEALED ENGINE, LH SIDE 4 ER96ER-0 ENGINE RETARDER LOW/HI
6 3
P134 2 3 P20-1082 BLACK, PACKARD, METRI-PACK 150 SERIES, SEALED TRANSMISSION 8 10 7 GND_C-3 GNDS, INSTRUMENT PANEL
P141 2 4 K333-562-202-1 LT-GRAY, PACKARD, METRI-PACK 150 SERIES, SEALED ENGINE, FRONT RH SIDE AT COMPRESSOR DISCHARGE LINE MATING VIEW 2B E97ER-2 SWITCH COMMON TERMINAL INFORMATION FOR: P099
P142 2 3 P20-1158-102 GRAY, DEUTSCH, DTP SERIES, SEALED FIREWALL
E 5B E97ER-1 SWITCH COMMON P20-1132-1518 , GRAY, (18 CAVITIES) E
P143 2 4 K333-550-202 BLACK, PACKARD, METRI-PACK 280 SERIES, SEALED ENGINE, MIDDLE TOP FRONT LH SIDE NEAR POWER STEERING PUMP ENGN SWITCH PANEL HARN
P144 3 4 P20-1252 GRAY, PACKARD, METRI-PACK 150 SERIES, SEALED AT POWER STEERING RESERVOIR TERM CIRCUIT NO. CIRCUIT DESCRIPTION
P145 2 3 K333-550-202 BLACK, PACKARD, METRI-PACK 280 SERIES, SEALED ENGINE, LH SIDE TERMINAL INFORMATION FOR: J011 1 WHT1515-15 GNDS, INSTRUMENT PANEL
P20-1191-3, BLACK, (10 CAVITIES)
P166 6 3 P20-1238-1206G2 BLACK, DEUTSCH, DTM SERIES, SEALED FIREWALL ENGINE FAN SW 2 ORN4220-0 WARNING LIGHT POWER
R114 6 3 P20-1194-20 BLUE, AMP, J1939 TERMINATING RESISTOR ASSY ENGINE, LH SIDE TERM CIRCUIT NO. CIRCUIT DESCRIPTION 4 GRA3132-0 ENGINE RETARDER MED/HI
16 1
T101 1 3 K333-46-39 RING, TERMINAL, (7/16") ENGINE, LH SIDE 7 9 6 GRA3192-0 ENGINE FAN OVERRIDE 5 GRA3131-0 ENGINE RETARDER LOW/HI
T102 1 3 K333-46-39 RING, TERMINAL, (7/16") ENGINE, LH SIDE 4 1
6 GRA3192-1 ENGINE FAN OVERRIDE 17 2 7 WHT1515-17 GNDS, INSTRUMENT PANEL
T120 1 3 K333-46-15 RING, TERMINAL, (3/8") FIREWALL, POWER JUNCTION STUD ON FUSE PANEL ASSY 5B 2B
7 WHT3192-0 ENGINE FAN OVERRIDE, GND 9 GRN3195-0 GNDS, INSTRUMENT PANEL
D T133 1 5 K333-46-19 RING, TERMINAL, (5/16") FIREWALL GROUND STUD, ENGINE SIDE 6 3
7 WHT3192-1 ENGINE FAN OVERRIDE, GND 18
MATING VIEW
3 10 GRA3162-0 CRUISE SET/ACCELERATE D
10
8
2B ORN4317-0 ENG FAN OVERRIDE WARN LP 11 GRA3163-0 CRUISE RESUME/DECELERATE
MATING VIEW 12 GRA3161-0 CRUISE ON/OFF
5B WHT3192-1 ENGINE FAN OVERRIDE, GND
5B WHT3192-2 ENGINE FAN OVERRIDE, GND

TERMINAL INFORMATION FOR: J013 TERMINAL INFORMATION FOR: J105

P20-1191-3, BLACK, (10 CAVITIES) P20-1131-1518 , GRAY, (18 CAVITIES)
REGEN SW ENGN SWITCH PANEL HARNESS
TERM CIRCUIT NO. CIRCUIT DESCRIPTION
C 1 GRA3223-0 INHIBIT REGENERATION
TERM CIRCUIT NO. CIRCUIT DESCRIPTION C
7 9 2 P18WL-3 IGN PWR, INDIC/WARN LPS
4 1 3 GRA3222-0 FORCE REGENERATION 4 E98ER-0 ENG RETARDER (MED-HI)
1 16
5B 2B 7 WHT5952-0 REGEN VALIDATION, GND 5 E96ER-0 ENG RETARDER (LOW-HI)
6 3
10 BRN3223-0 INHIBIT REGENERATION 7 E69CM-0 SWITCH COMMON
8 10 4 BRN3223-0 INHIBIT REGENERATION 9 E31CT-2 CLUTCH POSITION SENSE
2 17
MATING VIEW 2B WHT5952-0 REGEN VALIDATION, GND 10 E140CT-1 CRUISE SET
2B WHT5952-1 REGEN VALIDATION, GND 11 E141CT-1 CRUISE RESUME
3
5B ORN3223-0 REGEN SW WARNING LIGHT 18
MATING VIEW 12 E139CT-1 CRUISE ON/OFF
B B
TERMINAL INFORMATION FOR: J014
P20-1191-3, BLACK, (10 CAVITIES)
ENGINE BRAKE SW
7 9 TERM CIRCUIT NO. CIRCUIT DESCRIPTION
4 1

5B 2B
6 E97ER-0 SWITCH COMMON UNLESS OTHERWISE NOTED TITLE

DIAG - ENG, ISX12-G

THIS DRAWING AND THE
INFORMATION CONTAINED
6 3 7 GND_C-4 GNDS, INSTRUMENT PANEL HEREIN ARE PROPRIETARY
TO PACCAR INC.
8 10
2B P18WL-2 PWR, WARN LMPS IT SHALL NOT BE
REPRODUCED, COPIED OR DRAWING REV

A MATING VIEW
P94-2015 A A
DISCLOSED, IN WHOLE OR
5B E69CM1-3 SWITCH COMMON IN PART, OR USED FOR
MANUFACTURE OR FOR
OTHER PURPOSE WITHOUT
THE WRITTEN PERMISSION DWG
OF PACCAR INC. SCALE NONE DRAWING VERSION A.6 SHEET 2 OF 7 SIZE

A0
16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1
 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1

OPTIONAL

"RMT THROTTLE POS SIGNAL"

L L

"REMOTE THROTTLE ON/OFF"

"COMMON RTN #1 (SWITCH)"

"REMOTE THROTTLE ENABLE"

"COMMON RTN #3 (SENSOR)"
"COMMON RTN #4 (TEMP/LEVEL)"

"COMMON RTN #4 (TEMP/LEVEL)"

SEE DETAIL "C" SHT 4

"IGN (SWITCH) POWER"

SEE DETAIL "F" SHEET 7

"O2 SENSOR OUTLET SIGNAL"

FOR USE WITH POWER

"J1939 POWERTRAIN (-)"

"J1939 POWERTRAIN (+)"
STEERING TEMP SWITCH FOR COOLANT LEVEL SENSORS

USAGE NOTE:

"O2 HEATER RETURN"

"O2 HEATER SUPPLY"

SEE

"PTO ON/OFF"
"CAT TEMP SENSOR"
B

"5V COMMON"
SHEET 4
D ZONE E15 USE ON B-CAB FAMILY WITH NAMUX II INSTRUMENTATION

" GROUND"
A/C PRESSURE SWITCH COOLANT VEHICLE ENGINE ECU WITH CUMMINS ISX12-G ELECTRONIC ENGINES EQUIPPED
2-SPEED AXLE
SEE SHEET 4 LEVEL SPEED PORT C04 WITH CM2180A CONTROLLER.
ZONE C5 SENSOR SENSOR B A
K 13
J145 19 K
P108 P145 12
B A C B A B A B A CHASSIS 3 11 10 4 5 12 8 9 7 6
HARNESS J124
P112 P134 P124 P125 A B C ENGINE
P166 1 2 3 4 5 6 3 11 10 4 5 12 8 9 7 6 ENGINE
ENGINE HARNESS

GRA7131-0 0.8mm^2

GRN7131-2 0.8mm^2
HARNESS
HARNESS

GRN4564-1 0.8mm^2

BLU4564-1 0.8mm^2

VIO4564-1 0.8mm^2
9 10

GRN4586-0 0.8mm^2

BLU4586-0 0.8mm^2

GRA3631-0 0.8mm^2

GRN3631-0 0.8mm^2
A SEE SHEET 4

GRN5494-1 0.8mm^2

GRN4594-0 0.8mm^2

BLU3213-0 0.8mm^2

BLU4594-0 0.8mm^2

VIO4594-0 0.8mm^2
GRN3213-0 0.8mm^2
ZONE J16

GRN3115-4 0.8mm^2

GRN3117-0 0.8mm^2

VIO3114-2 0.8mm^2

BLU3144-0 0.8mm^2

GRA3511-2 0.8mm^2

GRA3143-0 0.8mm^2

WHT1513-6 2.0mm^2

ORN1229-2 1.0mm^2

GRA3143-1 0.8mm^2

YEL0812-5 0.75mm^2

GRN0812-5 0.75mm^2
ENGINE INSTRUMENT
ENGINE
J HARNESS
HARNESS PANEL J
HARNESS

"AC HP SW/ECM FAN CTL" 11 GRA7131-0 0.8mm^2 29

"VEHICLE SPEED SENSOR (-)" 6 GRN4586-0 0.8mm^2 28

"VEHICLE SPEED SENSOR (+)" 5 BLU4586-0 0.8mm^2 24

"2-SPEED AXLE" 18 GRA3631-0 0.8mm^2 6

GRN5494-1 0.8mm^2 TO
I I
S105
10 REMOTE 46
GRN4594-0 0.8mm^2 PTO/THROTTLE
20 HARNESS 26

"CAT TEMP SENSOR" 14 BLU3213-0 0.8mm^2 SEE REMOTE THROTTLE R114 P114 25
SYSTEM DIAGRAM
1B 1A 1
21 1 GRN0812-4 0.75mm^2 30 "J1939 POWERTRAIN (-)"
120 ^
25 2A
2 YEL0812-4 0.75mm^2 31 "J1939 POWERTRAIN (+)"
2B 2
13 GRA3143-1 0.8mm^2 11 "REMOTE THROTTLE ENABLE"
H "PTO ON/OFF" 23 GRA3511-0 0.8mm^2 ORN1229-2 1.0mm^2 1 "IGN (SWITCH) POWER" H
S107
7 GRA3511-1 0.8mm^2 18 "PTO ON/OFF"

"COMMON RTN #1 (SWITCH)" 19 GRN3115-0 0.8mm^2 16

S102
GRN3142-3 0.8mm^2
26 GRN3115-2 0.8mm^2 34 "COMMON RTN #3 (SENSOR)"
S101
8 BLU3142-0 0.8mm^2 14 "PEDAL POSITION SENSOR #2"

17 VIO3142-0 0.8mm^2 13 "5V SUPPLY"

S104
G 2
G
"CHECK ENGINE LAMP" BRN4311-0 0.8mm^2 BRN4311-0 0.8mm^2 42 "CHECK ENGINE LAMP"

"J1587 DATA LINK (+)" 28 VIO0831-0 0.8mm^2 VIO0831-0 0.8mm^2 2 "J1587 DATA LINK (+)"

"J1587 DATA LINK (-)" 29 GRN0831-0 0.8mm^2 GRN0831-0 0.8mm^2 3 "J1587 DATA LINK (-)"

"IGNITION" 27 ORN3112-4 1.0mm^2 20

"IGNITION" 30 ORN3112-3 1.0mm^2 ORN3971-0 1.0mm^2 5 "IGN PWR (MISC)"

S108
"STOP ENGINE LAMP" 1 BRN4312-0 0.8mm^2 BRN4312-0 0.8mm^2 43 "STOP ENGINE LAMP"
F F
24 40

22 VIO3141-0 0.8mm^2 12 "PEDAL SUPPLY #1 (+5V)"

15 BLU3141-0 0.8mm^2 22 "PEDAL POSITION SENSOR #1"

"LOW FUEL PRESSURE LAMP" 4 BRN4323-0 0.8mm^2 GRN3141-0 0.8mm^2 23 "PEDAL SENSOR RETURN #1"

"MAF SENSOR IGN" 31 ORN3840-0 1.0mm^2 ORN3114-0 1.0mm^2 21 "ECU WAKE UP"

16 4
E E
12 47

9
ENGINE ECU
PORT C02 3 10

P101 P103

RED3111-2 5.0mm^2
RED3111-1 5.0mm^2
D D
FUEL PRESSURE
HARNESS
S109
GRN3142-2 0.8mm^2

A
GRN3142-3 0.8mm^2

"MAF SENSOR IGN" ORN3840-0 1.0mm^2

BLU4564-1 0.8mm^2

ORN3114-0 1.0mm^2

VIO3142-3 0.8mm^2
BLU4594-0 0.8mm^2

VIO4594-0 0.8mm^2

BLU3141-0 0.8mm^2
GRN3213-0 0.8mm^2

BLU3144-0 0.8mm^2

BLU3142-0 0.8mm^2
GRN3119-0 0.8mm^2

GRA3143-0 0.8mm^2

GRN3116-1 0.8mm^2

GRN3116-1 0.8mm^2
YEL3191-0 0.8mm^2

YEL3191-0 0.8mm^2
VIO3141-0 0.8mm^2

GRN3141-0 0.8mm^2

WHT3111-2 5.0mm^2

WHT3111-1 5.0mm^2
RED3111-2 5.0mm^2

RED3111-1 5.0mm^2

WHT3111-0 8.0mm^2
"LOW FUEL PRESSURE LAMP" B . BRN4323-0 0.8mm^2 15A 15A

WHT1513-5 1.0mm^2
J142
ENGINE
2 1 HARNESS 18
P120
C 2 1 ENGINE A B C D E F C
P142 FUSE
FUEL PRESS ENGINE P109
HARNESS

RED3111-5 3.0mm^2
RED3111-6 3.0mm^2

RED1210-3 3.0mm^2
RED3111-5 3.0mm^2

RED3111-6 3.0mm^2

RED1210-4 3.0mm^2
HARNESS HARNESS

P100 P118 P102

ENGINE ENGINE ENGINE FIREWALL
HARNESS Q H A F S R T L W K U G X J P N A B HARNESS 3 4 1 2 FUSE POWER
T101 T102 HARNESS
8 11 JUNCTION
STUD
"ECU WAKE UP"

"RMT THROTTLE POS SIGNAL"

"COMMON RTN #3 (SENSOR)"

C
"REMOTE THROTTLE ON/OFF"
"O2 HEATER RETURN"

"PEDAL POSITION SENSOR #2"

ENGINE ECU
"COOLANT SENSOR SIG"

"COMMON RTN #4 (TEMP/LEVEL)"

"ENGINE FAN CLUTCH"

"PEDAL POSITION SENSOR #1"
"O2 HEATER SUPPLY"

"PEDAL SUPPLY #1 (+5V)"

"ECM SUPPLY (+)"

"ECM SUPPLY (+)"

"5V SUPPLY"

"PEDAL SENSOR RETURN #1"

"FAN RETURN"

"ECM SUPPLY RETURN (-)"

"ECM SUPPLY RETURN (-)"

TOP
"O2 SENSOR OUTLET SIGNAL"

B ENGINE ECU PORT C03

F SEE B
PORT C01 CHARGE & START
RED1210-3 3.0mm^2
S106 SYSTEM DIAGRAM
FAN CLUTCH ENGINE ENGINE
T120
SOLENOID VALVE GROUND GROUND
(0V = FAN ON)
(12V = FAN OFF)

UNLESS OTHERWISE NOTED TITLE

DIAG - ENG, ISX12-G

THIS DRAWING AND THE
INFORMATION CONTAINED
HEREIN ARE PROPRIETARY
TO PACCAR INC.
IT SHALL NOT BE
REPRODUCED, COPIED OR DRAWING REV

A P94-2015 A A
DISCLOSED, IN WHOLE OR
IN PART, OR USED FOR
MANUFACTURE OR FOR
OTHER PURPOSE WITHOUT
THE WRITTEN PERMISSION DWG
OF PACCAR INC. SCALE NONE DRAWING VERSION A.6 SHEET 3 OF 7 SIZE

A0
16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1
 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1

OPENING AT TOP
OF PD BOX
L ENG SD L
FUSE (F1)

WARN LP ORN3112-2 0.8mm^2

FUSE (F5) 5A USAGE NOTE:
ORN1223-0 5.0mm^2 ORN4300-0 0.5mm^2 CONT SHT 5, ZN I14 USE ON B-CAB FAMILY WITH NAMUX II INSTRUMENTATION
10A WITH CUMMINS ISX12-G ELECTRONIC ENGINES EQUIPPED
WITH CM2180A CONTROLLER.
F

BODY IGN
K SEE CHARGE FUSE (H12) K
AND START
DIAGRAM ORN1221-0 5.0mm^2 ORN1229-1 2.Omm^2
10A

PD BOX
J A SEE SHEET 3 J
ZONE J2
TELLTALE
10
RELAY
ENGINE INSTRUMENT
HARNESS PANEL 7
HARNESS 2 5 3 1 4
J02-01 FUEL
J103 PRESSURE
HARNESS
24 SEE DETAIL "E" SHEET 7

GRA4323-1 0.8mm^2

ORN3840-2 0.8mm^2
"IGN SWITCHED POWER" 1 ORN1229-1 2.Omm^2 FOR INSTRUMENT CLUSTER
INSTRUMENT
5 PANEL
I IP IP
HARNESS I
19 HARNESS CONT SHT 5, ZN I14
HARNESS FUEL
CECU 4 (D)
11 J113 J023 PRESSURE
TO FUEL

WHT4323-0 0.8mm^2
P113 HARNESS
ENGINE PRESSURE
"ECU WAKE UP" 21 ORN3112-1 0.8mm^2 A A ORN3112-2 0.8mm^2 GRA3161-0 0.5mm^2 10 "CRUISE ON/OFF" HARNESS HARNESS P03-01
"CHECK ENGINE LAMP" 42 BRN4311-1 0.5mm^2 BRN4311-1 0.5mm^2 15 "CHECK ENGINE LAMP" 1 FUEL
B GRA4323-1 0.8mm^2
PRESSURE
"STOP ENGINE LAMP" 43 BRN4312-1 0.5mm^2 BRN4312-1 0.5mm^2 16 "STOP ENGINE LAMP" 2 TELLTALE
A ORN3840-1 0.8mm^2 BRN4323-1 0.8mm^2
S10
30 GRN0831-2 , 0.8mm^2 SEE
H INSTRUMENTATION J01-01 H

ORN3840-3 0.8mm^2
31 YEL0812-2 , 0.8mm^2 SYSTEM DIAGRAM
CECU
17

16
INSTRUMENT THROTTLE PEDAL
PANEL EXTENSION
HARNESS HARNESS
J103 THROTTLE PEDAL
P001 J001 P003 SENSOR FUEL P01-1 P02-1 FUEL
G 2 E
PRESSURE PRESSURE G
"COMMON RTN #1 (SWITCH)" 34 GRN3115-1 0.8mm^2 2 GRN3142-1 0.8mm^2 "APS GROUND 2" HARNESS HARNESS
"PT SENSE POSITION #2" 14 BLU3142-1 0.8mm^2 3 3 BLU3142-2 0.8mm^2 F "APS SIGNAL 2" IP IP
HARNESS HARNESS
"PT SUPPLY #2 (+5V)" 13 VIO3142-1 0.8mm^2 1 1 VIO3142-2 0.8mm^2 D "APS SUPPLY (+5V) 2"

WHT1515-0 0.8mm^2
ORN0734-0 0.8mm^2
"PT SENSE POSITION #1" 22 BLU3141-1 0.8mm^2 6 6 BLU3141-2 0.8mm^2 A "APS SIGNAL 1"

"PT RETURN #1" 23 GRN3141-1 0.8mm^2 4 4 GRN3141-2 0.8mm^2 B "APS GROUND 1"

"PT SUPPLY #1 (+5V)" 12 VIO3141-1 0.8mm^2 5 5 VIO3141-2 0.8mm^2 C "APS SUPPLY (+5V) 1"
F F
SPARE PWR IGN
FUSE (B7-B10) J35
SEE CHARGE
AND START 30A
DIAGRAM F

B SEE SHEET 3
ZONE K9 FIREWALL
E GND E

19

TO CHASSIS CHASSIS
ENGINE HARNESS HARNESS
J10
DETAIL "C":
HARNESS J01 USE RADIATOR MOUNTED POWER STEERING COOLER

BLK0990-1 0.8mm^2
4 BLU3212-0 0.8mm^2 BLU3212-0 0.8mm^2 1 USE JUMPER P92-3238-100
IN PLACE OF A/C PRESS SW
D 2 GRN4594-1 0.8mm^2 GRN4594-1 0.8mm^2 2 WHEN CHASSIS IS W/O A/C. D
3 GRN3213-1 0.8mm^2
POWER
A/C PRESS SW
1 GRN4594-2 0.8mm^2 STEERING
ECM FAN CONTROL
CATALYTIC CONVERTER TEMP SW
J100
5 BLU4594-1 0.8mm^2 GRN3213-1 0.8mm^2 D D SEE SHEET 3
ZONE K13
A A B
6 VIO4594-1 0.8mm^2 GRN4594-2 0.8mm^2
ENGINE TEMP SW
BLU4594-1 0.8mm^2 B ADAPTER
HARNESS
HARNESS A B TEMP SW TEMP SW A C B 25
C VIO4594-1 0.8mm^2 C ADAPTER EXTENSION C
P141 HARNESS HARNESS P144

P08
A GRN7131-1 0.8mm^2 GRA7131-1 0.8mm^2 A A GRA7131-3 0.8mm^2

B GRA7131-2 0.8mm^2 B B GRA7131-4 0.8mm^2

20
J141
P143 J143

B B

UNLESS OTHERWISE NOTED TITLE

DIAG - ENG, ISX12-G

THIS DRAWING AND THE
INFORMATION CONTAINED
HEREIN ARE PROPRIETARY
TO PACCAR INC.
IT SHALL NOT BE
REPRODUCED, COPIED OR DRAWING REV

A P94-2015 A A
DISCLOSED, IN WHOLE OR
IN PART, OR USED FOR
MANUFACTURE OR FOR
OTHER PURPOSE WITHOUT
THE WRITTEN PERMISSION DWG
OF PACCAR INC. SCALE NONE DRAWING VERSION A.6 SHEET 4 OF 7 SIZE

A0
16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1
 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1

L L

SET
USAGE NOTE:
SEE DETAIL "B" ON SHEET 6 FOR
OPTIONAL SMART STEERING WHEEL USE ON B-CAB FAMILY WITH NAMUX II INSTRUMENTATION
WITH CUMMINS ISX12-G ELECTRONIC ENGINES EQUIPPED
RESUME
WITH CM2180A CONTROLLER.
23
23
K K
7 7 9 9 7 7 9 9

3 3 3 3
2B 2B
2B 2B
1 1
CLUTCH SWITCH 1 1
(SWITCH SHOWN WITH 6 6
5B 6
PEDAL IN "UP" POSITION)

GND_C-1, WHT

E141CT-0 , ORN/GRN

E140CT-0 , ORN/RED
5B 5B

E69CM1-1, GRY
4 4
J004 4
J NO NC
8 10 8 10 J

GND_C-2, WHT

P18WL-1, LT_GRN

E139CT-0, ORN/BRN

E69CM1-2, GRY
26 8 10 8 10
COM J007 J008

GRA3195-0 0.5mm^2
INSTRUMENT ENGINE CRUISE SET/RESUME CRUISE ON/OFF OPTIONAL
PANEL SWITCH PANEL SWITCH SWITCH
J005 HARNESS HARNESS (SWITCH SHOWN IN (SWITCH SHOWN IN
"NEUTRAL" POSITION) "OFF" POSITION)

GRN3195-0 0.8mm^2
P099

GRA3163-0 0.5mm^2 11 11 E141CT-0, ORN/GRN

I I
CONT SHT 4, ZN I10 GRA3161-0 0.5mm^2 GRA3162-0 0.5mm^2 10 10 E140CT-0, ORN/RED 23

CONT SHT 4, ZN K11 ORN4300-0 0.5mm^2 3 3 GND_C-2 , WHT

1 7 7 9 9
WHT1515-15 0.8mm^2 1 GND_C-0 , WHT GND_C-3 , WHT GND_C-3, WHT
29
6 6 3 3
2B
E97ER-2, LT_BLU/GRN 2B
13 13 1
1
25 23
ORN4317-0 1.0mm^2 ORN4220-0 0.5mm^2 2 2 P18WL-0 , LT_GRN 20 6 6
H E97ER-1, LT_BLU/GRN 5B
5B H
14 14 4
4
15 15 8 10
J009 8 10
WHT1515-17 0.8mm^2 7 7 E69CMI-0 , GRY
21 ENGINE BRAKE
GRN3195-0 0.8mm^2 9 9 E31CT-0 , YEL/PUR E69CM1-2 , GRY SELECTOR SWITCH
(SWITCH SHOWN IN
GRA3161-0 0.5mm^2 12 12 E139CT-0 , ORN/BRN "LOW" POSITION)

G 8 8 G
GRA3131-0 0.5mm^2 5 5 ER96ER-0 , GRN/YEL ER96ER-0, GRN/YEL
ORN3223-0 1.0mm^2

GRA3132-0 0.5mm^2 4 4 ER98ER-0 , GRN/BLK ER98ER-0, GRN/BLK

E97ER-0, LT_BLU/GRN
J099

D SEE SHEET 6
ZONE C5
F F

23

7 7 9 9
GND_C-4 , WHT GND_C-4, WHT

3 3
2B
P18WL-2, LT_GRN 2B
E 1 E
1
6 6
5B
E69CM1-3 , GRY E69CM1-3, GRY 5B
4
WHT1515-15 0.8mm^2

WHT1515-17 0.8mm^2

4
WHT5952-1 1.0mm^2

8 10
8 10
J014

ENGINE BRAKE
ON/OFF SWITCH
D (SWITCH SHOWN IN D
"OFF" POSITION)
23
GRA3195-0 0.5mm^2

GRA3163-0 0.5mm^2

GRA3162-0 0.5mm^2
GRA3131-0 0.5mm^2
GRA3132-0 0.5mm^2

23

28 7 9
WHT3192-0 0.8mm^2 7 9
7 7 9 9
WHT5952-0 1.0mm^2
3 3 GRA3223-0 0.5mm^2
2B
ORN4317-0 1.0mm^2 2B 3 3 GRA3222-0 0.5mm^2
2B
WHT1515-2 0.5mm^2

1 GRA3222-0 0.5mm^2 WHT5952-1 1.0mm^2 2B

1 1
1 GRA3223-0 0.5mm^2
C 5B 6 6 GRA3192-0 0.8mm^2
INSTRUMENT
C
WHT3192-1 0.8mm^2 5B J021 6 6
PANEL 5B
4 ORN3223-0 1.0mm^2 5B
4 HARNESS 4
WHT3192-2 0.8mm^2

17 13 9 8 11 12 19 18 4
8 10 22
"CRUISE SET/ACCELERATE"
"ENGINE FAN OVERRIDE"

8 10
"CLUTCH POSITION"

"CRUISE RESUME/DECELERATE"

"FORCE REGENERATION"

8 10
"ENGINE RETARDER LOW/HI"
"ENGINE RETARDER MED/HI"

"INHIBIT REGENERATION"

J011 CECU 2 (B) BRN3223-0 1.0mm^2

J013 8 10
T133 ENGINE FAN
OVERRIDE SWITCH REGEN SWITCH
P006 (SWITCH SHOWN IN (SWITCH SHOWN IN
P006 "AUTO" POSITION) "AUTO" POSITION)
SPARE ENGN FAN SW GND
B B
P007
FIREWALL P007
GROUND GRA3192-1 0.8mm^2
(CAB SIDE) SPARE ENGN FAN SW

USE WITH OPTION REQUESTS FOR FAN TO OPERATE WITH UNLESS OTHERWISE NOTED TITLE

DIAG - ENG, ISX12-G

THIS DRAWING AND THE
PARK BRAKE SET ONLY (REF SALES CODE 8203161) OR INFORMATION CONTAINED
HEREIN ARE PROPRIETARY
WITH FAN TO OPERATE WITH PARK BRAKE SET AND A/C TO PACCAR INC.
IT SHALL NOT BE
IS "ON" (REF SALES CODE 8203162). REPRODUCED, COPIED OR DRAWING REV

A P94-2015 A A
DISCLOSED, IN WHOLE OR
IN PART, OR USED FOR
MANUFACTURE OR FOR
OTHER PURPOSE WITHOUT
THE WRITTEN PERMISSION DWG
OF PACCAR INC. SCALE NONE DRAWING VERSION A.6 SHEET 5 OF 7 SIZE

A0
16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1
 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1

L L

DETAIL "B": MUX (MUTIPLEX) MODULE

USE WITH SMART STEERING WHEEL (OPTIONAL)
(LOCATED BEHIND HEATER CONTROL) USAGE NOTE:
USE ON B-CAB FAMILY WITH NAMUX II INSTRUMENTATION
WITH CUMMINS ISX12-G ELECTRONIC ENGINES EQUIPPED

RETARDER RELAY 1
RETARDER RELAY 2

RETARDER ON/OFF
WITH CM2180A CONTROLLER.
RETARDER ON/OFF RELAY

BACKLIGHT GND

BACKLIGHT PWR
K K

CRUISE RESUME

CRUISE ON/OFF
NOT USED ON B-CAB W/NAMUX.

CRUISE SET
+12V PWR

+12V IGN

PWR GND
THE CECU IS PROGRAMMED TO ACTIVATE

IPX SIG

IPX RET
THE ENGINE BRAKE INDICATOR LAMP WHEN
EITHER RETARDER LEVEL 1, 2, OR 3 HAS
BEEN ACTIVATED.

RETARDER
J ON/OFF RELAY CRUISE J
(IND LAMP) ON/OFF

c c

I RETARDER CRUISE I
RELAY 1 SET

c c

H H
RETARDER CRUISE
RELAY 2 RESUME

c c

G G

F F

1 2 3 4 5 6 4 1 2 3 8 14 10 11 9 12 13 7 2 1 4 3 6 5

5 6 4 1 2 3 8 14 10 11 9 12 13 7 2 1 4 3 6 5

P106 P105
14

P18WL-4, L_GRN

E69CM-2, GRY

E96ER-0, LT_GRN/YEL

E98ER-0, LT_GRN/BLK

ACC-1, YEL

E69CM-1, GRY

E141CT-1, RON/GRN

E140CT-1, ORN/RED

E139CT-1, ORN/BRN
21

E183MPX-0, RED/GRY

E182MPX-0, GRY/RED
OPENING AT TOP
E OF PD BOX
E
PD BOX

INSTRUMENT SMARTWHEEL
PANEL ENGINE SW
SPARE PWR ACC A, B, C, OR D HARNESS HARNESS
FUSE (A9, 10, 11, OR 12, ) D91 30
LABEL " MPX STRG " J002
SEE CHARGE
AND START F ORN1231-0 ORN0751-0 ACC-0, YEL ACC-0, YEL
A C
D DIAGRAM 15A 31 D
P002

J106 SMARTWHEEL

E31CT-2 , YEL/PUR
ENGINE SW

P18WL-3 , L_GRN

E69CM-0 , GRY
HARNESS
C D A B
15
C D A B
STEERING
STEERING WHEEL MOUNTED SWITCHES COLUMN
C C
CRUISE CRUISE CRUISE CRUISE RETARDER RETARDER RETARDER RETARDER
ON OFF SET RESUME OFF LEVEL 1 LEVEL 2 LEVEL 3 J105 SMARTWHEEL SEE SHEET 5
ENGINE SW D ZONE F10
15 1 2 9 5 4 14 16 7 17 11 8 10 13 12 HARNESS
26
"IGN PWR, INDIC/WARN LPS"

"CRUISE RESUME"

"CRUISE ON/OFF"
"CLUTCH POSITION SENSE"

"ENG RETARDER (LOW-HI)"

"ENG RETARDER (MED-HI)"

"SWITCH COMMON"

"CRUISE SET"
SLIP RING & BRUSHES ENGINE SWITCH
IN STEERING COLUMN HARNESS BREAKOUT
(IP HARNESS)

B B
MUX (MULTIPLEX) TRANSCEIVER IPX SIG

IPX RET

UNLESS OTHERWISE NOTED TITLE

DIAG - ENG, ISX12-G

THIS DRAWING AND THE
INFORMATION CONTAINED
HEREIN ARE PROPRIETARY
TO PACCAR INC.
IT SHALL NOT BE
REPRODUCED, COPIED OR DRAWING REV

A P94-2015 A A
DISCLOSED, IN WHOLE OR
IN PART, OR USED FOR
MANUFACTURE OR FOR
OTHER PURPOSE WITHOUT
THE WRITTEN PERMISSION DWG
OF PACCAR INC. SCALE NONE DRAWING VERSION A.6 SHEET 6 OF 7 SIZE

A0
16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1
 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1

L L

USAGE NOTE:
USE ON B-CAB FAMILY WITH NAMUX II INSTRUMENTATION
WITH CUMMINS ISX12-G ELECTRONIC ENGINES EQUIPPED
WITH CM2180A CONTROLLER.
K K
MULTIPLEXING IS THE SENDING OF MULTIPLE SIGNALS OR DATA STREAMS OF INFORMATION OVER A TRANSMISSION LINE(S),
AND THEN RECOVERING BY SEPARATING THE MULTIPLE SIGNALS OR DATA.

EXAMPLE: INSTEAD OF THE ENGINE ECU (ELECTRONIC CONTROL UNIT) RECEIVING A DIRECT (HARDWIRED) SWITCHED INPUT OPTIONAL HIGHLINE DISPLAY
SIGNAL FROM THE CRUISE CONTROL ON-OFF SWITCH IN THE DASH, IT RECEIVES A DATA BUS COMMUNICATION
MESSAGE VIA SAE J1939 DATA LINK BUS FROM THE CECU (CAB ELECTRONIC CONTROL UNIT) WHICH HAS DETAIL "E"
RECEIVED A DIRECT SWITCHED INPUT FROM THE CRUISE CONTROL ON-OFF SWITCH THAT IT HAS BEEN PLACED IN INSTRUMENT CLUSTER
THE "ON" POSITION.
SEE INSTRUMENTATION DIAGRAM
FOR GAUGE CLUSTER DETAIL
THE FOLLOWING IS A LIST OF FUNCTIONS THAT ARE BEING MULTIPLEXED VIA PUBLIC & PRIVATE DATA LINK BUSES THAT ARE POSITION OF RIGHT
J FOLLOWING THE ARCHITECTURE & PROTOCOLS PER THE SAE J1939 SPECIFICATION:
4 9 HAND TELLTALE J
POSITION OF LEFT 3 10
HAND TELLTALE 2 11
MULTIPLEXED MULTIPLEXED 1 12
HARDWIRED J1939 DATA BUS J1939 DATA BUS ENGINE RETARDER
7 8 13 14
(POWERTRAIN / VCAN) (INSTRUMENTATION / ICAN) INDICATOR LAMP
POSITION 1
6 15
SWITCHES
CECU CECU CECU CECU CECU TYPICAL
APPLICATION ACTIVATION:
5 16
INPUT INPUT OUTPUT INPUT OUTPUT LOCATION
DATA BUS
CRUISE CONTROL (SMARTWHEEL ONLY)
DASH CECU RECEIVES A HARDWIRE SIGNAL INPUT FROM THE DASH SWITCH AND
ON-OFF M N/A AREA #4 OUTPUTS A MESSAGE ON THE "POWERTRAIN" J1939 DATA BUS.
I SWITCH STOP ENGINE 17 18 19 I
CRUISE CONTROL INDICATOR LAMP
DASH THE CECU RECEIVES A HARDWIRE SIGNAL INPUT FROM THE DASH SWITCH AND
SET/RESUME M N/A AREA #4 OUTPUTS A MESSAGE ON THE "POWERTRAIN" J1939 DATA BUS.
POSITION 23
SWITCH ACTIVATION:
LOW (GND)
FOR CHASSIS NOT EQUIPPED WITH SMARTWHEEL (MULTIPLEX STEERING WHEEL), HEST
THE ENGINE RETARDER ON-OFF & BRAKE LEVEL SWITCHES ARE HARD-WIRED (HIGH EXHAUST
ENGINE RETARDER
TOGETHER IN SERIES, AND ARE RECEIVED AS INPUTS TO THE CECU. SEE SYSTEM TEMPERATURE)
ON-OFF
LOGIC TABLE BELOW FOR ENGINE BRAKE SWITCHES. THE ENGINE BRAKE INDICATOR LAMP
SWITCH CHECK ENGINE
INDICATOR LAMP IS LOCATED IN THE ON/OFF ENGINE BRAKE SWITCH AND IS POSITION 13
DASH ACTIVATED WHEN ITS SWITCH CONTACTS ARE CLOSED WITH 12V. INDICATOR LAMP 22 23 26 27 ACTIVATION:
M N/A AREA #4
POSITION 22
DATA BUS
H FOR CHASSIS EQUIPPED WITH SMARTWHEEL, THE CECU IS PROGRAMMED TO ACTIVATION: H
ENGINE RETARDER ACTIVATE THE ENGINE BRAKE INDICATOR LAMP LOCATED IN THE INSTRUMENT
LOW (GND) 21 X100 24 25 kmh 28
BRAKE LEVEL CLUSTER WHEN EITHER RETARDER LEVEL SWITCHES 1, 2, OR 3 HAS BEEN
SWITCH ACTIVATED. THESE SWITCHES ARE LOCATED ON THE SMARTWHEEL. RPM MPH COOLANT LEVEL
SEE LOGIC TABLE BELOW FOR SMARTWHEEL ENGINE BRAKE SWITCHES. INDICATOR LAMP
POSITION 25
ENGINE FAN ENGINE FAN ACTIVATION:
DASH CECU RECEIVES A HARDWIRE SIGNAL INPUT FROM THE DASH SWITCH AND
AUTO/MANUAL M N/A AREA #1 OUTPUTS A MESSAGE ON THE "POWERTRAIN" J1939 DATA BUS. INDICATOR LAMP DATA BUS
SWITCH POSITION 21
CLUTCH CLUTCH PEDAL THE CECU RECEIVES A HARDWIRE SIGNAL INPUT FROM THE CLUTCH SWITCH ACTIVATION:
SWITCH M N/A BRACKET AND OUTPUTS A MESSAGE ON THE "POWERTRAIN" J1939 DATA BUS. DATA BUS ODOMETER
ENGINE HOUR
G SERVICE
AIR JUNCTION
THE CECU RECEIVES A HARDWIRE SIGNAL INPUT FROM THE APPLICATION AIR G
BRAKE M N/A BLOCK
PRESSURE TRANSDUCER AND OUTPUTS A MESSAGE ON THE "POWERTRAIN" TRIP ODOMETER
SENSE J1939 DATA BUS. OUTSIDE AIR TEMP
USE ESA TO M = MONITOR OR S = SIMULATE FILTER REGENERATION
ESA DIAGNOSTIC N/A = NOT AVAILABLE INDICATOR LAMP
POSITION 24
ACTIVATION:
MULTIPLEXED MULTIPLEXED
DATA BUS
HARDWIRED J1939 DATA BUS J1939 DATA BUS
(POWERTRAIN / VCAN) (INSTRUMENTATION / ICAN) INSTRUMENT CLUSTER
RESET
CECU CECU CECU CECU CECU TYPICAL
LAMPS
INPUT INPUT OUTPUT INPUT OUTPUT LOCATION
APPLICATION BUTTON
F F
ENGINE RETARDER THE CECU RECEIVES INPUTS FROM THE SMARTWHEEL MODULE AND THEN
LH TELLTALE
INDICATOR M S POSITION #1
OUTPUTS A MESSAGE ON THE "INSTRUMENTATION" J1939 DATA BUS TO
LAMP ACTIVATE THE INDICATOR/WARNING LAMP IN GAUGE CLUSTER.
HEST THE CECU RECEIVES A MESSAGE FROM THE "POWERTRAIN" J1939 DATA
RH TELLTALE
WARNING M S POSITION #13
BUS AND THEN OUTPUTS A MESSAGE ON THE "INSTRUMENTATION" J1939
LAMP DATA BUS TO ACTIVATE THE INDICATOR/WARNING LAMP IN GAUGE CLUSTER.
ENGINE FAN THE CECU RECEIVES A MESSAGE FROM THE "POWERTRAIN" J1939 DATA
DETAIL "F"
TACHOMETER COOLANT LEVEL SENSORS
INDICATOR M S POSITION #21
BUS AND THEN OUTPUTS A MESSAGE ON THE "INSTRUMENTATION" J1939
LAMP DATA BUS TO ACTIVATE THE INDICATOR/WARNING LAMP IN GAUGE CLUSTER.
REGENERATION THE CECU RECEIVES A MESSAGE FROM THE "POWERTRAIN" J1939 DATA
BEHR/GENTECH COOLANT
E WARNING M S
TACHOMETER
BUS AND THEN OUTPUTS A MESSAGE ON THE "INSTRUMENTATION" J1939 LEVEL SENSOR CASCO COOLANT LEVEL SENSOR E
POSITION #24
LAMP DATA BUS TO ACTIVATE THE INDICATOR/WARNING LAMP IN GAUGE CLUSTER.
(FLOAT TYPE, NON-IMMERSION) (IMMERSION TYPE)
COOLANT LEVEL THE CECU RECEIVES A MESSAGE FROM THE "POWERTRAIN" J1939 DATA
SPEEDOMETER
"LOW" M S POSITION #25
BUS AND THEN OUTPUTS A MESSAGE ON THE "INSTRUMENTATION" J1939 (USED ONLY ON W900B AND C5)
INDICATOR LAMP DATA BUS TO ACTIVATE THE INDICATOR/WARNING LAMP IN GAUGE CLUSTER. +5V
USE ESA TO M = MONITOR OR S = SIMULATE
ESA DIAGNOSTIC N/A = NOT AVAILABLE TERMINAL A
(NOT USED) ELECTRICAL SPECIFICATIONS:
R4 - POWER: 4.75-5.25 VDC 12.5mA MAX
OUTPUT
500 - OUTPUT: 0.75-1.75 VDC IN COOLANT
SIGNAL POWER GROUND
(1.20 VDC NOMINAL)
D TERMINAL B
3.75-4.25 VDC IN AIR A B C D
(4.0 VDC NOMINAL)
R3
ENGINE BRAKE SWITCHES ENGINE BRAKE SWITCHES 500
SW1 - OUTPUT SINK CURRENT: 11 mA MAX
(Vout = 1.20 V)
WITHOUT SMARTWHEEL WITH SMARTWHEEL - OUTPUT SOURCE CURRENT: 0.5mA MAX
SW2 (Vout = 4.0 V)
INPUTS SMARTWHEEL INPUTS R2
SWITCH POSITIONS - OUTPUT DC RESISTANCE TO GROUND: 4.86K MATING VIEW
CECU 2 (B) SWITCHES CECU 2 (B) 1K NC
NO R1
BRAKE 162
ON/OFF PIN 12 PIN 11 OFF/1/2/3 RELAY PIN 12 PIN 11 GROUND SIGNAL
LEVEL
NOT USED
OFF LOW 0 0 OFF #1 & #2 0 0 GROUND
C TERMINAL C C B A C
0
OFF MEDIUM 0 1 #2 0 1
VOLTAGE OUTPUT RANGES
-NORMAL: 0.75V-1.75V
OFF HIGH 0 0 2 #1 1 0 -LOW: 2.00V-3.00V MATING VIEW
-VERY LOW: 3.25V-4.25V
ON LOW 0 1 3 #1 & #2 1 1

ON MEDIUM 1 0 SIGNAL TYPE

0 = FLOATING, RELAY SWITCH CONTACTS OPEN
ON HIGH 1 1 1 = GROUNDED, RELAY SWITCH CONTACTS CLOSED
B B
SIGNAL TYPE
0 = FLOATING, SWITCH CONTACTS OPEN
1 = GROUNDED, SWITCH CONTACTS CLOSED

UNLESS OTHERWISE NOTED TITLE

DIAG - ENG, ISX12-G

THIS DRAWING AND THE
INFORMATION CONTAINED
HEREIN ARE PROPRIETARY
TO PACCAR INC.
IT SHALL NOT BE
REPRODUCED, COPIED OR DRAWING REV

A P94-2015 A A
DISCLOSED, IN WHOLE OR
IN PART, OR USED FOR
MANUFACTURE OR FOR
OTHER PURPOSE WITHOUT
THE WRITTEN PERMISSION DWG
OF PACCAR INC. SCALE NONE DRAWING VERSION A.6 SHEET 7 OF 7 SIZE

A0
16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1