2008 ISUZU I-290 & I-370

Isuzu i-290 S 2008 - BUZZERS, RELAYS & TIMERS

Isuzu i-290 S 2008 BUZZERS, RELAYS & TIMERS LOCATION

Component	Location
A/C COMP Relay	On underhood fuse block. See Fig. 54.
BEAM SEL Relay	On underhood fuse block. See Fig. 54.
FOG LP Relay	On underhood fuse block. See Fig. 54.
FUEL PUMP Relay	On underhood fuse block. See Fig. 54.
HD LP Relay	On underhood fuse block. See Fig. 54.
HORN Relay	On underhood fuse block. See Fig. 54.
IGN 3 HVAC Relay	On underhood fuse block. See Fig. 54.
PARK LP Relay	On underhood fuse block. See Fig. 54.
POWERTRAIN Relay	On underhood fuse block. See Fig. 54.
RAP Relay	On underhood fuse block. See Fig. 54.
RUN/CRANK Relay	On underhood fuse block. See Fig. 54.
Secondary Air Injection (AIR) Pump Relay (3.7L)	Lower right front of engine compartment.
START Relay	On underhood fuse block. See Fig. 54.
WIPER Relay	On underhood fuse block. See Fig. 54.
WIPER 2 Relay	On underhood fuse block. See Fig. 54.

Isuzu i-290 S 2008 - CIRCUIT PROTECTION DEVICES

Isuzu i-290 S 2008 CIRCUIT PROTECTION DEVICES LOCATION

Component	Location
AIR Solenoid Fuse Block	Lower right front of engine compartment.
Underhood Fuse Block (6)	On left front side of engine compartment. See Fig. 34.

Isuzu i-290 S 2008 - CONTROL UNITS

Isuzu i-290 S 2008 CONTROL UNITS LOCATION

Component	Location
Body Control Module (3)	Behind right kick panel. See Fig. 35.
Electronic Brake Control Module (EBCM)	On inner left frame rail, beside transmission. See Fig. 11.
Generator Battery Control Module	Left front of engine compartment, near battery.
Heated Seat Module - Driver (11)	Bottom of driver seat. See Fig. 4.
Heated Seat Module - Front Passenger (4)	Bottom of front passenger seat. See Fig. 55.
Inflatable Restraint I/P Module	Right side of dash. See Fig. 45.
Inflatable Restraint Passenger Presence Module	Under side of front passenger seat. See Fig. 40.
Inflatable Restraint Roof Rail Module - Left (ASF)	In roof above driver door. See Fig. 5.
Inflatable Restraint Roof Rail Module - Right (ASF)	In roof above front passenger door. See Fig. 5.
Inflatable Restraint Sensing & Diagnostic Module	Beneath center console. See Fig. 6.
Inflatable Restraint Steering Wheel Module	Top of steering wheel. See Fig. 45.
Powertrain Control Module (PCM)	Right rear corner of engine compartment. See Fig. 44.
Transfer Case Shift Control Module (10)	Under driver's seat carpet. See Fig. 21 & Fig. 22 .
Vehicle Communication Interface Module (VCIM)	Right side of dash. See Fig. 8.

Isuzu i-290 S 2008 - MOTORS

Isuzu i-290 S 2008 MOTORS LOCATION

Component	Location
Blower Motor (4)	Below right side of dash. See Fig. 52.
Door Lock Actuator - Driver (11)	In lower rear of door. See Fig. 53.
Door Lock Actuator - Front Passenger (4)	In lower rear of door. See Fig. 37.
Door Lock Actuator - LR (5)	In lower rear of door. See Fig. 38.
Door Lock Actuator - RR (3)	In lower rear of door. See Fig. 39.
Front Axle Actuator	On right center of front axle housing. See Fig. 1.
Fuel Pump & Sender Assembly	Top of fuel tank. See Fig. 17.
Lumbar Pump Motor - Driver (5)	In bottom of driver seat. See Fig. 4.
Lumbar Pump Motor - Front Passenger	In bottom of front passenger seat. See Fig. 41.
Recirculation Actuator (3)	Right side of dash. See Fig. 52.
Recliner Motor (10)	In driver seat bottom. See Fig. 4.
Secondary Air Injection (AIR) Pump (3.7L)	Lower right front of engine compartment.
Starter (2)	Left rear side of engine. See Fig. 34.
Transfer Case Encoder Motor (4WD)	On rear of transfer case. See Fig. 17.
Window Motor - Driver (8)	In lower front of door. See Fig. 53.
Window Motor - Front Passenger (6)	In lower front of door. See Fig. 37.
Window Motor - LR (4)	In lower center of door. See Fig. 38.
Window Motor - RR (5)	In lower center of door. See Fig. 39.
Windshield Washer Fluid Pump	On washer fluid reservoir. See Fig. 47.
Windshield Wiper Motor	Left rear of engine compartment. See Fig. 47.

Isuzu i-290 S 2008 - SENDING UNITS & SENSORS

Isuzu i-290 S 2008 SENDING UNITS & SENSORS LOCATION

Component	Location
Accelerator Pedal Position (APP) Sensor (6)	On accelerator bracket. See Fig. 31.
A/C Refrigerant Pressure Sensor	Right rear of engine compartment. See Fig. 30.
Ambient Air Temperature Sensor (9)	On radiator support, behind center of grille. See Fig. 48.
Ambient Light Sensor	Upper right side of dash, at windshield. See Fig. 32.
Camshaft Position (CMP) Sensor 1 (3.7L)	Top right front of engine. See Fig. 19.
Camshaft Position (CMP) Sensor 2 (3.7L)	Top left front of engine. See Fig. 19.
Camshaft Position (CMP) Sensor (2.9L)	Top right front of engine. See Fig. 16.
Crankshaft Position (CKP) Sensor (2.9L)	Left rear of engine block, below starter. See Fig. 15.
Crankshaft Position (CKP) Sensor (3.7L) (3)	Left rear of engine block, below starter. See Fig. 29.
Engine Coolant Temperature (ECT) Sensor (2.9L)	On left rear of engine. See Fig. 14.
Engine Coolant Temperature (ECT) Sensor (3.7L)	On left rear of engine. See Fig. 18.
Engine Oil Pressure (EOP) Sensor (2.9L)	Right front of engine. See Fig. 14.
Engine Oil Pressure (EOP) Sensor (3.7L)	Right front of engine. See Fig. 18.
Evaporator Temperature Sensor (1)	Lower right side of dash. See Fig. 52.
Fuel Pump & Sender Assembly	Top of fuel tank. See Fig. 17.
Fuel Tank Pressure (FTP) Sensor	At top left rear of fuel tank. See Fig. 17.
Heated Oxygen Sensor (HO2S) 1 (2.9L)	Right side of engine, on exhaust manifold. See Fig. 14.
Heated Oxygen Sensor (HO2S) 1 (3.7L)	Right side of engine, on exhaust manifold. See Fig. 18.
Heated Oxygen Sensor (HO2S) 2	In exhaust pipe, adjacent to transmission. See Fig. 17.
Inflatable Restraint Front End Sensor - Left	On left underside of front frame crossmember. See Fig. 5.
Inflatable Restraint Front End Sensor - Right	On right underside of front frame crossmember. See Fig. 5.
Inflatable Restraint Passenger Presence System (PPS) Sensor	In front passenger seat cushion.
Inflatable Restraint Passenger Seat Belt Tension Sensor	Part of front passenger seat belt buckle. See Fig. 56.
Inflatable Restraint Seat Position Sensor (SPS) - Left (13)	On driver seat track. See Fig. 4.
Inflatable Restraint Seat Position Sensor (SPS) - Right	On front passenger seat track. See Fig. 56.
Inflatable Restraint Side Impact Sensor (SIS) - Left (ASF)	Lower rear of driver door. See Fig. 6.
Inflatable Restraint Side Impact Sensor (SIS) - Right (ASF)	Lower rear of front passenger door. See Fig. 6.
Intake Air Temperature (IAT)/Mass Air Flow (MAF) Sensor (2.9L)	In air intake duct, top right of engine. See Fig. 16.
Intake Air Temperature (IAT)/Mass Air Flow (MAF) Sensor (3.7L)	In air intake duct, top right of engine. See Fig. 19.
Knock Sensor (KS) (3.7L) (2)	On left side of engine, below intake manifold. See Fig. 29.
Knock Sensor (2.9L)	On left side of engine, below intake manifold. See Fig. 15.
Longitudinal Accelerometer Sensor	Under driver seat, below carpet. See Fig. 42.
Manifold Absolute Pressure (MAP) Sensor (2.9L)	Top left side of engine, on intake manifold. See Fig. 15.
Manifold Absolute Pressure (MAP) Sensor (3.7L)	Top left side of engine, on intake manifold. See Fig. 19.
Vehicle Speed Sensor (2WD)	On left rear of transmission.
Vehicle Speed Sensor (4WD)	On left rear of transfer case. See Fig. 3.
Wheel Speed Sensor - LF	On left front hub. See Fig. 12.
Wheel Speed Sensor - RF	On right front hub. See Fig. 12.

Isuzu i-290 S 2008 - SOLENOIDS & SOLENOID VALVES

Isuzu i-290 S 2008 SOLENOIDS & SOLENOID VALVES LOCATION

Component	Location
A/C Compressor Clutch (2.9L)	Left front of engine. See Fig. 15.
A/C Compressor Clutch (3.7L) (7)	Left front of engine. See Fig. 29.
A/T Shift Lock Control Solenoid (2)	Under center console, left side of shifter. See Fig. 31.
Camshaft Position (CMP) Actuator Solenoid - Bank 1 Exhaust (2.9L)	On top right front of engine. See Fig. 16.
Camshaft Position (CMP) Actuator Solenoid - Bank 1 Exhaust (3.7L)	On top right front of engine. See Fig. 19.
Evaporative Emission (EVAP) Canister Purge Solenoid (2.9L)	Left side of engine, below intake. See Fig. 15.
Evaporative Emission (EVAP) Canister Purge Solenoid (3.7L) (8)	Left side of engine, below intake. See Fig. 29.
Evaporative Emission (EVAP) Canister Vent Solenoid	On side of EVAP canister, above spare tire. See Fig. 17.
Fuel Injector 1 (2.9L)	Top of engine, attached to fuel rail. See Fig. 14.
Fuel Injector 1 (3.7L)	Top of engine, attached to fuel rail. See Fig. 18.
Fuel Injector 2 (2.9L)	Top of engine, attached to fuel rail. See Fig. 14.
Fuel Injector 2 (3.7L)	Top of engine, attached to fuel rail. See Fig. 18.
Fuel Injector 3 (2.9L)	Top of engine, attached to fuel rail. See Fig. 14.
Fuel Injector 3 (3.7L)	Top of engine, attached to fuel rail. See Fig. 18.
Fuel Injector 4 (2.9L)	Top of engine, attached to fuel rail. See Fig. 14.
Fuel Injector 4 (3.7L)	Top of engine, attached to fuel rail. See Fig. 18.
Fuel Injector 5	Top of engine, attached to fuel rail. See Fig. 18.
Ignition Coil 1 (2.9L)	On top left of valve cover. See Fig. 14.
Ignition Coil 1 (3.7L)	On top left of valve cover. See Fig. 18.
Ignition Coil 2 (2.9L)	On top right of valve cover. See Fig. 14.
Ignition Coil 2 (3.7L)	On top right of valve cover. See Fig. 18.
Ignition Coil 3 (2.9L)	On top left of valve cover. See Fig. 14.
Ignition Coil 3 (3.7L)	On top left of valve cover. See Fig. 18.
Ignition Coil 4 (2.9L)	On top right of valve cover. See Fig. 14.
Ignition Coil 4 (3.7L)	On top right of valve cover. See Fig. 18.
Ignition Coil 5	On top left of valve cover. See Fig. 18.
Pressure Control Solenoid Valve	In automatic transmission. See Fig. 2.
Secondary Air Injection (AIR) Solenoid	Upper right side of engine.
Starter Solenoid (2)	On lower right side of engine. See Fig. 34.
Torque Converter Clutch Pulse Width Modulation (TCCPWM) Solenoid Valve	In automatic transmission. See Fig. 2.
Torque Converter Clutch (TCC) Solenoid Valve	In automatic transmission. See Fig. 2.
1-2 Shift Solenoid Valve	In automatic transmission. See Fig. 2.
2-3 Shift Solenoid Valve	In automatic transmission. See Fig. 2.
3-2 Shift Solenoid Valve Assembly	In automatic transmission. See Fig. 2.

Isuzu i-290 S 2008 - SWITCHES

Isuzu i-290 S 2008 SWITCHES LOCATION

Component	Location
Automatic Transmission Fluid Pressure (TFP) Manual Valve Position Switch	In automatic transmission. See Fig. 2.
Back-Up Lamp Switch	Left side of engine compartment, on top of transmission. See Fig. 33.
Brake Fluid Level Switch	On brake fluid reservoir. See Fig. 36.
Clutch Start Switch	Top of clutch pedal assembly. See Fig. 9.
Clutch Switch	Lower left side of dash. See Fig. 9.
Door Jamb Switch (Driver) (14)	Inside left front door. See Fig. 21 & Fig. 22 .
Door Jamb Switch (Front Passenger)	Inside right front door. See Fig. 21.
Door Jamb Switch (Left Rear) (Crew Cab)	Inside left rear door. See Fig. 23 & Fig. 24 .
Door Jamb Switch (Right Rear) (Crew Cab)	Inside right rear door. See Fig. 23.
Park Brake Switch	Lower left end of dash. See Fig. 13.
Park/Neutral Position (PNP) Switch	On lower left side of transmission. See Fig. 43.
Seat Belt Switch - Left	At driver seat belt latch.
Seat Belt Switch - Right	At front passenger seat belt latch.
Stop Lamp Switch	Above brake pedal assembly. See Fig. 9.
TCC Brake/Cruise Release Switch	Above brake pedal assembly. See Fig. 9.
Transfer Case Neutral Switch (4WD)	Upper right side of transfer case. See Fig. 17.
Transfer Case 2/4 Wheel Driver Indicator Switch (4WD)	Lower right side of transfer case. See Fig. 17.

Isuzu i-290 S 2008 - MISCELLANEOUS

Isuzu i-290 S 2008 MISCELLANEOUS LOCATION

Component	Location
Battery (4)	Left side of engine compartment. See Fig. 34.
Blower Motor Resistor Assembly (6)	Lower right side of dash, near blower motor. See Fig. 52.
Data Link Connector (DLC)	Lower left side of dash. See Fig. 8.
Digital Radio Receiver	Center of dash. See Fig. 10.
Generator (10)	Left front side of engine. See Fig. 34.
Seat Belt Pretensioner - LF (Extended Cab) (2)	In left rear door. See Fig. 7.
Seat Belt Pretensioner - LF (Regular/Crew Cab)	In left "B" pillar. See Fig. 45.
Seat Belt Pretensioner - RF (Extended Cab) (5)	In right rear door. See Fig. 46.
Seat Belt Pretensioner - RF (Regular/Crew Cab)	In right "B" pillar. See Fig. 45.
Throttle Body (2.9L)	On intake near MAP sensor. See Fig. 16.
Throttle Body (3.7L)	On intake, near MAP sensor. See Fig. 19.

Isuzu i-290 S 2008 - CONNECTORS

Isuzu i-290 S 2008 CONNECTORS LOCATION

Component	Location
X100 (Black, 4 Pin) (19)	Engine harness to front axle jumper harness, in engine compartment. See Fig. 28.
X101 (2.9L) (Black, 5 Pin) (16)	Engine harness to fuel rail harness, in engine compartment. See Fig. 49.
X101 (3.7L) (Black, 6 Pin) (18)	Engine harness to fuel rail harness, in engine compartment. See Fig. 50.
X102 (Black, 16 Pin) (7)	Body harness to chassis harness, in engine compartment. See Fig. 20.
X103 (Black, 2 Pin) (13)	Forward lamp harness to body harness, in engine compartment. See Fig. 20.
X104 (Black, 8 Pin) (13)	Forward lamp harness to body harness, in engine compartment. See Fig. 20.
X105 (Black, 14 Pin) (8)	Engine harness to body harness, in engine compartment. See Fig. 20.
X106 (Black, 3 Pin) (8)	Engine harness to body harness, in engine compartment. See Fig. 20.
X107 (Black, 3 Pin) (17)	Forward lamp harness to front turn signal harness, behind right front park/turn signal lamp. See Fig. 48.
X108 (Black, 3 Pin) (3)	Forward lamp harness to front turn signal harness, behind left front park/turn signal lamp. See Fig. 48.
X109 (Black, 1 Pin)	Battery harness to engine harness.
X175 (2.9L) (Gray, 20 Pin) (5)	Engine harness to transmission harness, right side of transmission. See Fig. 49.
X175 (3.7L) (Gray, 20 Pin) (7)	Engine harness to transmission harness, right side of transmission. See Fig. 50.
X200 (Black, 40 Pin) (25)	I/P harness to body harness, behind dash. See Fig. 21 & Fig. 22 .
X201 (Light Gray, 22 Pin) (4)	I/P harness to body harness, behind right kick panel. See Fig. 35.
X202 (Blue, 9 Pin) (5)	Driver door harness to body harness, between hinges. See Fig. 53.
X203 (Black, 10 Pin) (2)	I/P harness to HVAC harness, on top of blower. See Fig. 52.
X204 (Light Gray, 22 Pin) (17)	Steering column harness to I/P harness, at base of steering column. See Fig. 51.
X208 (Yellow, 4 Pin) (22)	I/P harness to body harness, above brake pedal. See Fig. 21 & Fig. 22 .
X209 (White, 18 Pin) (6)	Body harness to driver door harness, between hinges. See Fig. 53.
X210 (White, 18 Pin) (9)	Body harness to passenger door harness, between hinges. See Fig. 37.
X211 (White, 9 Pin) (8)	Passenger door harness to body harness, between hinges. See Fig. 37.
X275 (Yellow, 4 Pin) (1)	I/P harness to steering wheel harness, at base of steering column. See Fig. 31.
X307 (Black, 7 Pin) (6)	Body harness to driver seat harness, below driver seat. See Fig. 4.
X310 (White, 2 Pin) (29)	Dome lamp harness to body harness, in left "A" pillar. See Fig. 21 & Fig. 22 .
X311 (Yellow, 2 Pin) (5)	Body harness to left rear passenger door harness, in left rear door. See Fig. 7.
X312 (Yellow, 2 Pin) (2)	Body harness to right rear passenger door harness, in right rear door. See Fig. 46.
X313 (Black, 12 Pin) (8)	Body harness to passenger seat harness, under passenger seat. See Fig. 55.
X314 (Black, 4 Pin) (7)	Body harness to driver seat harness, under driver seat. See Fig. 4.
X315 (Black, 5 Pin) (9)	Body harness to passenger seat harness, under passenger seat. See Fig. 55.
X316 (Crew Cab W/O Power Windows) (Black, 2 Pin) (3)	Body harness to left rear passenger door harness, in left rear door. See Fig. 38.
X316 (Crew Cab W/ Power Windows) (White, 10 Pin) (3)	Body harness to left rear passenger door harness, in left rear door. See Fig. 38.
X316 (Extended Cab) (Black, 4 Pin) (4)	Body harness to left rear passenger door harness, in left rear door. See Fig. 7.
X317 (Crew Cab W/O Power Windows) (Black, 2 Pin) (5)	Body harness to right rear passenger door harness, in right rear door. See Fig. 39.
X317 (Crew Cab W/ Power Windows) (White, 10 Pin) (5)	Body harness to right rear passenger door harness, in right rear door. See Fig. 39.
X317 (Extended Cab) (Black, 4 Pin) (3)	Body harness to right rear passenger door harness, in right rear door. See Fig. 46.
X318 (Black, 4 Pin) (10)	Passenger seat harness to heated element, in passenger seat. See Fig. 55.
X319 (Black, 4 Pin) (9)	Driver seat harness to heated element, in driver seat. See Fig. 4.
X320 (Black, 3 Pin)	Rear of headliner, at 3rd brake light.
X400 (Black, 2 Pin) (5)	Chassis harness to license lamp harness, behind left license lamps. See Fig. 27.
X401 (Black, 6 Pin) (7)	Chassis harness to left rear lamp assembly, behind left rear lamps. See Fig. 26.
X402 (Black, 5 Pin) (5)	Chassis harness to right rear lamp assembly, behind right rear lamps. See Fig. 26.
X403 (Trailer Accessory) (Black, 6 Pin)	Trailer accessory harness to left rear lamp harness, behind left rear lamps.

Isuzu i-290 S 2008 - GROUNDS

Isuzu i-290 S 2008 GROUNDS LOCATION

Component	Location
G100 (5)	Next to rear side of battery. See Fig. 34.
G101 (14)	Lower left side of engine. See Fig. 28.
G102 (16)	Lower left side of engine. See Fig. 28.
G103 (15)	Lower left side of engine. See Fig. 28.
G104 (1)	Left side of engine. See Fig. 34.
G105 (6)	Left side of engine compartment, near EBCM. See Fig. 20.
G106 (14)	Right side of engine compartment, behind air cleaner. See Fig. 20.
G300 (15)	Under driver seat carpet. See Fig. 21 & Fig. 22 .
G301	Under front passenger seat carpet. See Fig. 21.
G302	Between front seats, under console. See Fig. 21.

Isuzu i-290 S 2008 - SPLICES

Isuzu i-290 S 2008 SPLICES LOCATION

Component	Location
JX105 (6)	Left side of engine compartment. See Fig. 20.
JX106 (14)	Right side of engine compartment. See Fig. 20.
J100 (1)	Body harness, 14.5 cm from accelerator pedal position switch breakout. See Fig. 25.
J101	In battery harness.
J102 (2)	Body harness, 8 cm from accelerator pedal position switch breakout. See Fig. 25.
J103	Fuel injector harness, 5 cm from fuel injector 4 breakout.
J104	Fuel injector harness, 4 cm from fuel injector 4 breakout.
J133	Automatic transmission harness.
J200	I/P harness, 6 cm from instrument cluster breakout.
J201	I/P harness, 7 cm from X204 breakout.
J202 (5)	HVAC harness, 14 cm from recirculation actuator breakout toward blower motor resistor assembly. See Fig. 52.
J300 (8)	Body harness, 5 cm from G300 breakout. See Fig. 25.
J301 (9)	Body harness, 12 cm from X314 breakout. See Fig. 25.
J302 (3)	Body harness, 4 cm from accelerator pedal position switch breakout. See Fig. 25.
J303 (19)	Body harness, 6 cm from X209 breakout. See Fig. 21 & Fig. 22 .
J304	Body harness, 91 cm from accelerator pedal position switch breakout.
J306	Driver seat harness, 5 cm from X319 breakout.
J307 (4)	Body harness, 4 cm from accelerator pedal position breakout. See Fig. 25.
J308 (5)	Body harness, 10.5 cm from accelerator pedal position switch breakout. See Fig. 25.
J309 (6)	Body harness, 17 cm from accelerator pedal position switch breakout. See Fig. 25.
J310 (13)	Chassis harness, 39 cm before fuel pump & sender assembly. See Fig. 26.
J311 (7)	Body harness, 24.5 cm from G302 breakout. See Fig. 25.
J312	Driver seat harness, 12.5 cm from X319 breakout.
J313	Passenger seat harness, 12.5 cm from X318 breakout.
J314	Passenger seat harness, 5 cm from X319 breakout.
J315	Driver heater element harness.
J316	Passenger heater element harness.
J317	Passenger heater element harness.
J318	Passenger heater element harness.
J319	Passenger heater element harness.
J320	Driver heater element harness.
J321	Driver heater element harness.
J322	Driver heater element harness.
J400 (11)	Chassis harness, 40.5 cm from fuel pump & sender assembly breakout. See Fig. 26.
J401 (12)	Chassis harness, 21 cm from fuel pump & sender assembly breakout. See Fig. 26.
J402 (10)	Chassis harness, 13 cm from X401 & X402 breakout. See Fig. 26.
J403 (9)	Chassis harness, 14 cm from X401 & X402 breakout. See Fig. 26.
J404 (6)	Chassis harness, 75.5 cm before X402. See Fig. 26.
J405	Trailer accessory harness, between left rear tail lamp connector & trailer lighting connector.
J406	Trailer accessory harness, between left rear tail lamp connector & trailer lighting connector.
J407	Trailer accessory harness, between left rear tail lamp connector & trailer lighting connector.
J408	Trailer accessory harness, between left rear tail lamp connector & trailer lighting connector.
J409	Trailer accessory harness, between left rear tail lamp connector & trailer lighting connector.
J500 (10)	Driver door harness, 5 cm from left front door tweeter speaker breakout. See Fig. 53.
J900 (2)	License lamp harness, 44.5 cm before right license lamp. See Fig. 27.
J901 (3)	License lamp harness, 24 cm from X400 breakout. See Fig. 27.