ISUZU

N-SERIES-5.2L
2007-2010/MODEL TRUCKS

ECM Wire Diagram

Connectors

ECM J-73

ECM J-105
Connectors
Connectors
H-52 16-Way

H-80 22-Way

H-83 10-Way
 Connectors

H-107 8-Way Connector

H-108 8-Way Connector

H-90 22-Way Connector

 Connectors

H-90 22-Way

H-91 22-Way Gray

 Connectors

H-91 22-Way

H-175 8-way
 ISUZU N-SERIES-5.2L 2007-2010
How to Read This Diagram

Connector
Name
SYMBOLS
Trip Master
(5927)
Pin Label
Splice

+12V Battery A
Ground

Ignition B

Fuse
J1708(-) C
Pin Connection
Diode
J1708(+) D

Twisted Pair

Reference

A (See Page 1)

Reference
Destination
ABBREVIATION COLOR

RD RED
WH WHITE
OR ORANGE
Componen t
Componen t
YL/YE YELLOW
Name PK PINK
BK BLACK
GY GRAY
Part
Number
PU/VT PURPLE
Componen t BR/BN BROWN
Connection GN GREEN
BU/BL BLUE

Capital Abbreviation’s Represent Wire Main Color

Lower Cas e Abbreviation’s Represent Se condary Color
 ISUZU N-SERIES-5.2L 2007-2010
Fuse Relay Cen ter, Sub-Junction block, Ins trumental Panel Cluster
Page 1 of 7

Note:

Sub Junction Block 1 – Located behind the Center of the I/ P, Above

the Blower Motor Case to the Left of the Blower Motor.

Sub Junction Block 2 – Located behind the Center of the I/ P, On the

Right of the In-Cab Fuse Relay Center.

Fuse/Relay Center (In-Cab) ECM Connector (J-105)

Center of I/P, Behind Access Cover

Fuse/Relay Center
Left Outer Frame Rail Behind Front Tire 2,3,26,27 POW ER GROUN D
A1
Fuse Center
GROUND DISTRIBUTION
1 CASE GROUND
Center of I/P, Behind Access Cover

4,5 GROUND
FUSE RELAY CENTER
A2
IC 65 BU ye 0.85 IC 65 BU ye 0.5
5 52 RELAY
A3
IC 66 BU ye 0.85 IC 66 BU ye 0.5
53 MAIN CONTROL

IC 62 WH rd 1.25
1 IC 53 WH rd 3
49 IGNITION VOLTAGE
A4
IC 63 WH rd 1.25
50 IGNITION VOLTAGE

IC 53 WH rd 3 IC 67 WH rd 1.25
73 IGNITION VOLTAGE
(F-33) A5
IC 75 GN bk 0.5
44 IGNITION VOLTAGE

SUB JUNCTION BLOCK 1 H-90 Con nector

IC 11 BK bu 0.5
5 5 51 BATTERY POSITIVE VOLTAGE

PA 12 BK bu 0.85
18

FUSE RELAY CENTER (IN CAB)

3
IC 81 BK or 0.5
1

SUB JUNCTION BLOCK 2

13
PA 32 BK or 0.5
12
4 H-80 Con nector

IC 01 BK or 0.5 IC 01 BK b u 0.5
13 1 23 IGNITION 1 VOLTAGE

SUBJUNCTION BLOCK 1 FUSE/RELAY CENTER

(In-Cab)
MA 48 GN ye 0.5
7 10
MA 01 GN ye 0.5
5
INSTRUMENTAL PANEL CLU STER (IPC)

2 H-80 Con nector

IC 10 YE bk 0.5 IC 10 YE bk 0.5 MALFUNCTION INDICATOR

31 11 80 LAMP (MIL) CONTROL
 ISUZU N-SERIES-5.2L 2007-2010 Page 2 of 7

Sub Junction Block, Switch, Sensor

Note:

Sub Junction Block 1 – Located behind the Center of the I/ P, Above ECM Con nector (J-105)
the Blower Motor Case to the Left of the Blower Motor.

Sub Junction Block 2 – Located behind the Center of the I/ P, On the

Right of the In-Cab Fuse Relay Center. 46 CRUISE CONTROL SET/COAST
SWITCH SIG NAL

48 CRUISE CONTROL RESUME/ACCEL

SWITCH SIG NAL
47 CRUISE CONTROL ON SWITCH
SIGNAL

62 STOP LIGHT SWITCH SIGN AL

STOP LIGHT CRUISE RELEASE

63 SWITCH SIG NAL
LOW COOLAN T LEVEL NDICATOR
66 CONTROL
EXHAUST BRAKE REQUEST
67 SIGNAL

60 LOW REFERENCE

72 EXHAUST BRAKE RELAY CONTROL

76 STARTER RELAY CONTROL

PARK/N EU TRAL START RELAY

96 SIGNAL

82 VEHICLE SP EED SIGNAL 1

83 ENGINE SPEED SIGNAL

86 BRAKE// CLUTCH SWITCH

OVERRIDE SIGNAL

88 PTO DISABLE SW ITCH SIGNAL

90 SPEED SET SWITCH SIGNAL B

89 SPEED SET SWITCH SIGNAL A

91 PTO SET SWITCH SIGNAL

FUSE/RELAY CENTER
SUB JUNCTION BLOCK 2 (IN CAB) 92 PTO RESUME SW ITCH SIGNAL
IC 81 BK or 0.5
1 94 PTO SHUT DOWN SWITCH SIGN AL
13
IC 100 BK or 0.5
3 93 PTO ENGINE SWITCH SIGNAL

58 5-VOLT REFERENCE

PTO ACCELERATOR SEN SOR

SUB JUNCTION BLOCK 1 34 SIGNAL

1 10 LOW REFERENCE
IC 141 BK or 0.5
9 95 PTO ENABLE RELAY SIGNAL

75 PTO ENABLE RELAY CONTROL

45 A/C SW ITCH SIGNAL

DPF REGENERATION 1 H-80 Con nector
SWITCH IC 140 BU wh 0.5 IC 140 BU wh 0.5 DIESEL PARTICULATE FILTER (DPF)
2 19 42 REGENERATION SWITCH SIGNAL

IC 36 BU rd 0.5 IC 36 BU rd 0.5
1 13 11 LOW REFERENCE

IDLE SPEED SELECTOR IC 34 BU 0.5 IC 34 BU 0.5

SENSOR 3 4 59 5V

IC 35 YE gn 0.5 IC 35 YE gn 0.5 IDLE SPEED SELECTOR SEN SOR

2 14 35 SIGNAL
 ISUZU N-SERIES-5.2L 2007-2010 Page 3 of 7

Sensor, Regulator, Injector Cylinder

ECM Connector (E-73)

5V ENG INE COOLANT

E 35 GN ye 0.5
ENGINE COOLANT 1 35 TEMPERATURE (ECT) SENSOR
TEMPERATURE SIGNAL
E 36 BK bu 0.5
SENSOR
2 36 LOW REFERENCE

E 41 GN wh 0.5 5V FUEL TEMPERATURE (FT)

2 41 SENSOR SIGNAL
FUEL TEMPERATU RE
SENSOR E 54 WH bk 0.5
1 54 LOW REFERENCE

E 33 WH bu 0.75 12V FUEL RAIL PRESSURE (FRP)

33 REGULATOR CONTROL (HIGH)

E 33 WH bu 0.75 A6 E 34 WH bu 0.75 12V FUEL RAIL PRESSURE (FRP)

1 34 REGULATOR CONTROL (HIGH)
FUEL RAIL PRESSURE
(FRP ) REGULATOR E 20 YE 0.75 A7 E 20 YE 0.75 FUEL RAIL PRESSURE (FRP )
2 20 REGULATOR CONTROL (LOW)
E 21 YE 0.75 FUEL RAIL PRESSURE (FRP )
21 REGULATOR CONTROL (LOW)

E 47 BN 0.5 5 VOLTS
3 47
A8
FUEL RAIL PRESSURE E 26 WH 0.5 FUEL PRESSURE SEN SOR SIGN AL
SENSOR
2 26
E 25 WH 0.5
1 25 5 VOLTS

E 13 GN bu 0.5
13 LOW REFERENCE
H-108 Connector H-107 Connector
10 BK 0.75 E 56 BU 0.5
3 8 8 56 FUEL INJECTOR 4 CONTROL
FUEL INJECTOR
A9
CYLINDER NO.4 9 WH 0.75 E 05 WH rd 0.5 12V ELECTRICAL DISCHARGE UNIT
1 1 4 5 120 VOLTS

2
1 WH 0.75

2
FUEL INJECTOR 2 WH 0.75
CYLINDER NO.1 1 4
3 OR 0.75 5 E 58 GN rd 0 .75
3 5 58 FUEL INJECTOR 1 CONTROL

H-108 Connector H-107 Connector

8 YE 0 .75 E 45 BK ye 0.75
3 7 7 45 FUEL INJECTOR 3 CONTROL
FUEL INJECTOR
A10
CYLINDER NO.3 7 RD 0.75 E 06 RD wh 2
1 2 3 6 12V IN JECTOR POSITIVE VOLTAGE
CONTROL 2

2
4 RD 0.75

2
FUEL INJECTOR 5 RD 0.75
CYLINDER NO.2 1 3
6 BU 0.75 E 43 GN bk 0.75
3 6 6 43 FUEL INJECTOR 2 CONTROL
 ISUZU N-SERIES-5.2L 2007-2010 Page 4 of 7

Valve, Sens or, Splice Pack

ECM Connector (E-73)

E 50 YE rd 0.5
6 50 5 VOLT REFERENCE
INTAKE AIRFLOW
VALVE E 16 BU bk 0.5
3 16 LOW REFERENCE

E 48 YE rd 0.5
ENGINE OIL 3 48 5 VOLT REFERENCE

PRESSURE SENSOR E 14 PK 0.5

1 14 LOW REFERENCE

E 46 BU 0.5
BOOST PRESSURE 3 46 5 VOLT REFERENCE
SENSOR E 12 YE 0.5
2 12 LOW REFERENCE

E 57 YE bk 0.5
EXHAUST GAS 1 57 5 VOLT REFERENCE
RECIRCULATION
VALVE E 44 BK wh 0.5
2 44 LOW REFERENCE

IC 54 WH or 0.5
EXHAUST 3 57 5 VOLT REFERENCE
DIFFEREN TIAL
PRESSURE SENSOR IC 56 VT wh 0.5
1 13 LOW REFERENCE

H-83 Connector
SPLICE PACK B-267
IC 06 BU rd 0.5 IC 06 BU rd 0.5
2
9 8 LOW REFERENCE

IC 106 BU rd 0.5
4

3
IC 04 BU 0.5 IC 04 BU 0.5
ACCELERATOR PEDAL
1 5 55 5 VOLT REFERENCE
POSITION SENSOR IC 33 WH 0.5
IC 33 WH 0.5
4 2 54 5 VOLT REFERENCE
IC 232 BK 0.5
6

SPLICE PACK B-268

4
IC 32 BK 0.5 IC 32 BK 0.5
2 1 7 LOW REFERENCE

H-52 Connector
IC 26 WH 0.5 IC 26 WH 0.5 MASS AIR FLOW (MAF) SENSOR
3 9 28 SIGNAL
IC 27 BK 0.5 IC 27 BK 0.5
2 10 15 LOW REFERENCE
MASS AIR FLOW
(MAF) AND IN TAKE IC 68 BU bk 0.5 IC 68 BU bk 0.5 5V IN TAKE TEMPERATURE (IAT)
AIR TEMP ERATURE 4 11 37 SENSOR SIGNAL 1
(IAT) SENSOR 1 IC 96 BU rd 0.5 IC 96 BU rd 0.5
5 12 3 LOW REFERENCE
FUSE/RELAY CENTER (IN CAB)
IC 25 GN bk 0.5 A11 IC 03 GN bk 0.5
1 F-33

- Glow Plug Control Module

- VNT Control Module
- Exhaust Brake Cut Relay
- ECM (2007K GVW and 2008 Non-12K GVW)
IC 161 RD bu 0.5 5V IN TAKE TEMPERATURE (IAT)
INTAKE AIR 1 38 SENSOR SIGNAL 2
TEMPERATURE (IAT)
IC 162 BU ye 0.5
SENSOR 2
2 17 LOW REFERENCE
 ISUZU N-SERIES-5.2L 2007-2010 Page 5 of 7

Sensor, Pack, Valve

ECM Connector (E-73)

E 32 WH 0.5 E 32 WH 0.5
3 32 5V

CRANK SHAFT E 31 RD 0.5 E 31 RD 0.5 CRANK SHAFT POSITION (CKP )

POSITION (CKP) 1 31 SENSOR SIGNAL
SENSOR E 19 BK 0.5 E 19 BK 0.5
2 19 LOW REFERENCE

E 51 BU 0.5
3 51 5V

E 30 BU wh 0.5 5V CAMSHAFT POSITION (CMP)

CAMSHAFT P OSITION
1 30 SENSOR SIGNAL
(CMP) SEN SOR
E 18 BU rd 0.5 E 18 BU rd 0.5
2 18 LOW REFERENCE

E 12 YE 0.5
2 12 LOW REFERENCE

BOOST PRESSURE E 24 GN 0.5

SENSOR 1 24 BOOST PRESSURE SENSOR SIGNAL

E 46 BU 0.5
3 46 5V

E 44 BU wh 0.5
1 44 5V

E 57 YE bk 0.5
2 57 LOW REFERENCE
EXHAUST GAS
RECIRCULATION E 04 WH or 0.5 EXHAUST GAS RECIRCU LATION
(EGR) VALVE 3 4 (EGR) POSITION SENSOR SIGNAL
E 07 GN rd 0 .5
4 7 EGR MOTOR HIGH CONTROL

E 08 OR 0.5
6 8 EGR MOTOR LOW CONTROL

SPLICE PACK B-268 H-83 Con nector

ECM Connector (J-105)
IZ 32 BK 0.5 IZ 32 BK 0.5
3 6
IC 32 BK 0.5
1
IC 32 BK 0.5
2 7 LOW REFERENCE

IZ 35
1

4 IC 23 RD 0.5
31
ACCELERATOR PEDAL P OSITION
(APP) SENSOR 1 SIGNAL
IC 33 WH 0.5
5V
54
IZ 232 BK 0.5
6
IC 23 RD 0.5
5 7
ACCELERATOR IC 33 WH 0.5
PEDAL POSITION 4 2
(APP) SENSOR
IC 04 BU 0.5
1 5
IC 05 BU 0.5
2 4

SPLICE PACK B-267 IC 04 BU 0.5

55 5V
4 IC 106 BU rd 0.5 IC 05 BU wh 0.5 ACCELERATOR PEDAL P OSITION
32 (APP) SENSOR 2 SIGNAL
IZ 33
1
IC 06 BU rd 0.5 IC 06 BU rd 0.5
2 9 8 LOW REFERENCE

IZ 34 BU rd 0.5 IZ 34 BU rd 0.5
3 10

IC 79 YE rd 0.5 5V EXHAUST GAS TEMP ERATURE

EXHAUST GAS 2 29 SENSOR 1 SIGN AL
TEMPERATURE
IC 80 VT gn 0.5
SENSOR 1
1 40 LOW REFERENCE

IC 12 RD 0.5 EXHAUST GAS TEMPERATURE

EXHAUST GAS 2 30 SENSOR 2 SIGN AL
TEMPERATURE
IC 52 VT ye 0.5
SENSOR 2
1 41 LOW REFERENCE
 ISUZU N-SERIES-5.2L 2007-2010 Page 6 of 7

Subjunction block, switch, Sensor

Note:

Sub Junction Block 1 – Located behind the Center of the I/ P, Above

the Blower Motor Case to the Left of the Blower Motor.

Sub Junction Block 2 – Located behind the Center of the I/ P, On the

Right of the In-Cab Fuse Relay Center.

Fuse/Relay Center (In-Cab)

Center of I/P, Behind Access Cover

Fuse/Relay Center
Left Outer Frame Rail Behind Front Tire

Fuse Center SUBJUNCTION BLOCK 2 H-90 Connector ECM Con nector (J-105)
Center of I/P, Behind Access Cover
IC 175 PK 0.5 A12
IC 175 PK 0.5 PTO ENGAGE SWITCH
5 13 93 SIGNAL
PTO UP/DOWN SW ITCH
IC 91 PK 0.5
7 4
PTO H-104 UPFITTER
CONNECTOR
13
IC 20 WH bu 0.5 PTO INDICATOR LAMP
4 74 CONTROL

PTO SWITCH

IC 20 WH bu 0.5
5 ON INDICATOR

IC 89 PK 0.5
SUBJUNCTION BLOCK 2 2 TOGGLE SWITCH

IC 90 BK or 0.5
17 6 ON INDICATOR

14 1 TOGGLE SWITCH

IC 87 BK or 0.5 IC 186 GN ye 0 .5
SUBJUNCTION BLOCK 1 SUBJUNCTION BLOCK 2

7 15
PA 51 G N ye 0.5
1 13

IC 100 BK or 0.5
SUBJUNCTION BLOCK 2 IC 46 GN ye 0. 5
14
3
13

IC 81 BK or 0.5 H-91 Connector

FUSE/RELAY CENTER (IN-CAB)

IC 46 GN ye 0. 5
1 11
ELECTRONIC HYDRAULIC CONTROL
9 UNIT (EHCU) ABS MODU LE (J-22)
BB 13 BK ye 0.5 BB 13 BK ye 0.5
4 21 3 IGNITION SUPPLY VOLTAGE

ECM Connector (J-105)

IC 09 GY 0.5
39 VSS 2 SENSOR SIGNAL
3
VEHICLE SP EED
SENSOR 2 1
(MT) & (A/T) SUBJUNCTION BLOCK 2
H-80 Connector
2 IZ 11 BK 0.5 IZ 11 BK 0.5
2 2 ZZ2 9 BK 2

10 REFER TO GROUND
DISTRIBUTION
 ISUZU N-SERIES-5.2L 2007-2010 Page 7 of 7

Sensor, Valve, Sub Junction Block, Instru ment Panel Cluster, Transmiss io n Control Mo dule

Note:
Sub Junction Block 1 – Lo cated b ehind the Center o f th e I/ P, Abo ve the Blower Motor Case to the Left of the Blower Motor. FUSE/RELAY CENTER (IN-CAB)
Sub Junction Block 2 – Lo cated b ehind the Center o f th e I/ P, On th e Righ t of the In-Cab Fuse Relay Center.
SUBJUNCTION BLOCK 1 IC 81 BK or 0.5
Fuse/Relay Center (In-Cab) IC 45 BK or 0.5 1
Center of I/P, Behind Access Cover 17
SUBJUNCTION BLOCK 2
Fuse/Relay Center
Left Outer Frame Rail Behind Front Tire 13 1
WIPER/EXHAUST 13
Fuse Center BRAKE SWITCH
15 IC 100 BK or 0.5
Center of I/P, Behind Access Cover 3
SUBJUNCTION BLOCK 1 IC 144 GN rd 0.5
3 TRANSMISSION CONTROL MODULE (TCM)

OA 45 GN rd 0 .5
14 23
INSTRUMENT PANEL CLU STER (IPC)
ECM Connector (J-105)
SB 09 GN rd 0.5
3 13 H-80 Connector
IC 44 GN rd 0.5 IC 44 GN rd 0.5
12 10 67 EXHAUST BRAKE SWITCH SIGNAL

IC 55 GN ye 0. 5 5V EXHAUST DIFFERENTIAL
2 36 PRESSURE SENSOR SIG NAL
EXHAUST
DIFFEREN TIAL IC 54 WH or 0.5
PRESSURE 3 57 5V
SENSOR IC 56 VT wh 0.5
1 13 LOW REFERENCE

EXHAUST BRAKE SOLENOID

EXHAUST
2 60 VALVE CON TROL
DIFFEREN TIAL FUSE/RELAY CENTER
PRESSURE TRANSMISSION CONTROL
SENSOR 1 MODULE (TCM)
1 H-91 Connector

20 23

A13
IC 45 BK or 0.5 EXHAUST BRAKE SOLENOID
72 VALVE CON TROL
ELECTRONIC HYDRAULIC CONTROL
5 UNIT (EHCU) ABS MODU LE
A14
IC 45 BK or 0.5 IC 45 BK or 0.5
8

4 IC 03 GN bk 0.85

A15
SB 07 GN bk 0.8 5
3 (See Cab Wiring)
ECM Connector (E-73)

(F-33) SB 06 GN bk 0.8 5
E 53 RD gn 0 .5 5V EGR GAS TEMPERATURE
EGR GAS 1 53 (IN ) SEN SOR 1 SIGNAL
TEMPERATURE
E 11 BU wh 0.5
(IN ) SEN SOR 1
2 11 LOW REFERENCE

E 40 RD ye 0.5 5V EGR GAS TEMPERATURE

EGR GAS 2 40 (OUT) SENSOR 2 SIGN AL
TEMPERATURE
E 09 BU rd 0.5
(OUT) SENSOR 2
1 9 LOW REFERECE

E 16 BU bk 0.5
3 16 LOW REFERENCE

E 50 YE rd 0.5
6 50 5V
E 29 VT wh 0.5 INTAKE AIR FLOW POSITION
INTAKE AIR FLOW
VALVE 5 29 SENSOR SIGNAL
E 01 BU 0.75
1 1 INTAKE MOTOR HIGH CON TROL

E 02 WH gn 0.75
2 2 INTAKE MOTOR LOW CONTROL

E 27 BN wh 0.5
ENGINE OIL P RESSURE (EOP)
2 27 SENSOR SIGNAL
ENGINE OIL E 48 YE rd 0.5
PRESSURE (EOP) 3 48 5V
SENSOR E 14 PK 0.5
14 LOW REFERENCE
1