2005 ISUZU Ascender

Isuzu Ascender Limited 2005 - BUZZERS, RELAYS & TIMERS

Isuzu Ascender Limited 2005 BUZZERS, RELAYS & TIMERS LOCATION

Component	Location
A/C Relay	In underhood fuse block. See Fig. 46 .
EAP Relay	In underhood fuse block. See Fig. 47 .
EAP Relay (Inside)	Under left side of dash. See Fig. 102 .
Fan Relay	In underhood fuse block. See Fig. 48 .
Fog Lamps Relay	In underhood fuse block. See Fig. 46 .
Fuel Pump Relay	In underhood fuse block. See Fig. 48 .
Headlamp Driver Module Relay	In underhood fuse block. See Fig. 47 .
High Beam Headlamp Relay	In underhood fuse block. See Fig. 47 .
Horn Relay	In underhood fuse block. See Fig. 46 .
Lock Relay	On rear fuse block. See Fig. 51 .
Park LP Relay	On rear fuse block. See Fig. 52 .
Powertrain Relay	In underhood fuse block. See Fig. 48 .
RAP Relay	On rear fuse block. See Fig. 52 .
Rear Wash Relay	In underhood fuse block. See Fig. 46 .
Secondary Air Injection (AIR) Pump Relay	On left frame rail, near EBCM. See Fig. 112 .
Starter Relay	In underhood fuse block. See Fig. 46 .
Unlock Relay	On rear fuse block. See Fig. 51 .
Windshield Wipers/Washer Relay	In underhood fuse block. See Fig. 47 .

Isuzu Ascender Limited 2005 - CIRCUIT PROTECTION DEVICES

Isuzu Ascender Limited 2005 CIRCUIT PROTECTION DEVICES LOCATION

Component	Location
Blower Motor Fuse (Auxiliary)	At right quarter panel. See Fig. 91 .
Rear Fuse Block	Below left rear seat. See Fig. 49 .
Underhood Fuse Block	On left side of engine compartment. See Fig. 3 .

Isuzu Ascender Limited 2005 - CONTROL UNITS

Isuzu Ascender Limited 2005 CONTROL UNITS LOCATION

Component	Location
Blower Motor Control Processor	Below right side of dash. See Fig. 67 .
Body Control Module (BCM)	Beneath left rear seat, on rear fuse block. See Fig. 50 .
Driver's Door Module	On lower part of driver's door switch panel. See Fig. 79 .
Electronic Brake Control Module	On inner left frame rail, adjacent to transmission. See Fig. 38 .
Engine Control Module (ECM) (5.3L)	On left front of engine compartment. See Fig. 24 .
Front Passenger's Door Module	On lower part of passenger's door switch panel. See Fig. 80 .
HVAC Control Module (Auxiliary)	At rear of lower console. See Fig. 101 .
Inflatable Restraint Front Passenger Presence System (PPS) Module	Under front passenger's seat. See Fig. 115 .
Inflatable Restraint Sensing & Diagnostic Module	Beneath lower console. See Fig. 74 .
Liftgate Module	Inside liftgate. See Fig. 92 .
Memory Seat Module (Driver's)	Under driver's seat. See Fig. 97 .
Powertrain Control Module (PCM) (4.2L)	On left front of engine. See Fig. 5 .
Transfer Case Shift Control Module	Behind left lower dash. See Fig. 55 .
Transmission Control Module (TCM) (5.3L)	Left front of engine compartment. See Fig. 24 .
Turn Signal/Hazard Flasher Module	Behind left side of dash. See Fig. 54 .
Vehicle Communication Interface Module (VCIM)	Upper right rear seat. See Fig. 60 .

Isuzu Ascender Limited 2005 - MOTORS

Isuzu Ascender Limited 2005 MOTORS LOCATION

Component	Location
Air Temperature Actuator (Auxiliary)	On rear HVAC module, behind right rear interior body panel. See Fig. 91 .
Air Temperature Actuator (Left)	Behind left center of dash. See Fig. 66 .
Air Temperature Actuator (Right)	Behind right center of dash. See Fig. 66 .
Blower Motor	Below right side of dash. See Fig. 67 .
Blower Motor (Auxiliary)	Behind interior right rear trim panel. See Fig. 91 .
Console Mode Actuator (LWB)	Rear of lower console. See Fig. 72 .
Defrost Actuator	Behind upper left center of dash. See Fig. 71 .
EAP Assembly	Under left side of dash. See Fig. 103 .
Front Axle Actuator	Lower right front of engine, on oil pan. See Fig. 36 .
Mode Actuator	Behind upper left center of dash. See Fig. 71 .
Mode Actuator (Auxiliary)	At right quarter panel. See Fig. 91 .
Mode Actuator (Aux-SWB)	Rear of lower console. See Fig. 72 .
Quarter Glass Actuator (Left)	On left quarter panel. See Fig. 90 .
Quarter Glass Actuator (Right)	On right quarter panel. See Fig. 90 .
Seat Front Vertical Motor (Driver's)	Under driver's seat. See Fig. 96 .
Seat Front Vertical Motor (Passenger's)	Under passenger's seat. See Fig. 99 .
Seat Horizontal Motor (Driver's)	Under driver's seat. See Fig. 96 .
Seat Horizontal Motor (Passenger's)	Under passenger's seat. See Fig. 99 .
Seat Rear Vertical Motor (Driver's)	Under driver's seat. See Fig. 96 .
Seat Rear Vertical Motor (Passenger's)	Under passenger's seat. See Fig. 99 .
Seat Recline Motor (Driver's)	Under driver's seat. See Fig. 96 .
Seat Recline Motor (Passenger's)	Under passenger's seat. See Fig. 99 .
Secondary Air Injection (AIR) Pump	On left frame rail, near EBCM. See Fig. 113 .
Starter (5.3L)	Right side of engine. See Fig. 109 .
Sun Roof Motor	Above headliner, at rear of sun roof. See Fig. 53 .
Transfer Case Encoder Motor	Left rear of transfer case. See Fig. 41 .
Washer Pump (Front)	In engine compartment, attached to fluid reservoir. See Fig. 12 .
Washer Pump (Rear)	In engine compartment, attached to fluid reservoir. See Fig. 12 .
Window Motor (Driver's)	In driver's door. See Fig. 81 .
Window Motor (Front Passenger's)	In right front door. See Fig. 81 .
Window Motor (Left Rear)	In left rear door. See Fig. 82 .
Window Motor (Right Rear)	In right rear door. See Fig. 82 .
Window Wiper Motor (Rear)	Inside liftgate. See Fig. 92 .
Wiper Motor (Front)	Under cowl cover. See Fig. 17 .

Isuzu Ascender Limited 2005 - SENDING UNITS & SENSORS

Isuzu Ascender Limited 2005 SENDING UNITS & SENSORS LOCATION

Component	Location
Accelerator Pedal Position (APP) Sensor (W/ EAP)	Under left side of I/P. See Fig. 102 .
Accelerator Pedal Position (APP) Sensor (W/O EAP)	On accelerator bracket. See Fig. 58 .
A/C Refrigerant Pressure Sensor (4.2L)	Bottom left front of engine. See Fig. 29 .
A/C Refrigerant Pressure Sensor (5.3L)	On bottom right side of engine. See Fig. 20 .
Air Temperature Sensor Assembly (Inside)	In left "B" pillar. See Fig. 70 .
Air Temperature Sensor (Lower Left)	In lower left air duct assembly. See Fig. 69 .
Air Temperature Sensor (Lower Right)	In lower right air duct assembly. See Fig. 68 .
Air Temperature Sensor (Upper Left)	In upper air duct. See Fig. 64 .
Air Temperature Sensor (Upper Right)	In upper air duct. See Fig. 64 .
Ambient Air Temperature Sensor	Above left side of grille. See Fig. 1 .
Ambient Light/Sunload Sensor Assembly	In center of upper dash trim panel. See Fig. 75 .
Brake Booster Vacuum Sensor	On brake booster. See Fig. 8 .
Camshaft Position (CMP) Sensor (4.2L)	On right front of cylinder head. See Fig. 14 .
Camshaft Position (CMP) Sensor (5.3L)	On top rear of engine, near transmission.
Crankshaft Position (CKP) Sensor (4.2L)	On left rear of engine, below starter. See Fig. 26 .
Crankshaft Position (CKP) Sensor (5.3L)	On right rear of engine, near starter. See Fig. 45 .
Engine Coolant Temperature (ECT) Sensor (4.2L)	On left front of engine, near generator. See Fig. 5 .
Engine Coolant Temperature (ECT) Sensor (5.3L)	Left front of engine. See Fig. 23 .
Fuel Tank Pressure Sensor	At top left rear of fuel tank. See Fig. 94 .
Heated Oxygen Sensor (HO2S) Bank 1 Sensor 1 (5.3L)	On left bank exhaust pipe, ahead of catalytic converter. See Fig. 44 .
Heated Oxygen Sensor (HO2S) Bank 1 Sensor 2 (5.3L)	On left bank exhaust pipe, behind catalytic converter. See Fig. 44 .
Heated Oxygen Sensor (HO2S) Bank 2 Sensor 1 (5.3L)	On right bank exhaust pipe, ahead of catalytic converter. See Fig. 43 .
Heated Oxygen Sensor (HO2S) Bank 2 Sensor 2 (5.3L)	On right bank exhaust pipe, behind catalytic converter. See Fig. 43 .
Heated Oxygen Sensor (HO2S) 1 (4.2L)	Right side of engine, on exhaust manifold. See Fig. 13 .
Heated Oxygen Sensor (HO2S) 2 (4.2L)	In exhaust pipe, adjacent to transmission. See Fig. 42 .
Inflatable Restraint Front Passenger Presence System (PPS) Sensor	Under front passenger's seat. See Fig. 115 .
Inflatable Restraint Passenger Seat Belt Tension Retractor Sensor	Under right side of passenger's seat. See Fig. 114 .
Inflatable Restraint Seat Position Sensor (SPS) (Left)	Under driver's seat. See Fig. 97 .
Inflatable Restraint Seat Position Sensor (SPS) (Right)	Under front passenger's seat. See Fig. 115 .
Inflatable Restraint Side Impact Sensor (Left)	In left front door. See Fig. 81 .
Inflatable Restraint Side Impact Sensor (Right)	In right front door. See Fig. 81 .
Intake Air Temperature (IAT) Sensor (4.2L)	In air intake duct, on top right of engine. See Fig. 15 .
Knock Sensor (KS) 1 (Left) (5.3L)	Left side of engine. See Fig. 108 .
Knock Sensor (KS) 2 (Right) (5.3L)	Right side of engine. See Fig. 109 .
Knock Sensor 1 (KS) (Front) (4.2L)	On lower left front of engine block. See Fig. 26 .
Knock Sensor 2 (KS) (Front) (4.2L)	On lower left rear of engine block. See Fig. 26 .
Manifold Absolute Pressure (MAP) Sensor (4.2L)	On upper left side of engine. See Fig. 6 .
Manifold Absolute Pressure (MAP) Sensor (5.3L)	On top of engine. See Fig. 20 .
Mass Airflow (MAF) Sensor/Intake Air Temperature (IAT) Sensor (5.3L)	In intake air duct. See Fig. 21 .
Oil Pressure Sensor (5.3L)	On top rear of engine, near transmission.
Outside Moisture Sensor	Center of windshield. See Fig. 107 .
Passlock Sensor	In steering column. See Fig. 62 .
Propshaft Speed Sensor (Front Transfer Case)	On left rear of transfer case. See Fig. 41 .
Propshaft Speed Sensor (Rear Transfer Case)	On right rear of transfer case. See Fig. 40 .
Rollover Sensor	Under left rear seat. See Fig. 84 .
Vehicle Speed Sensor (2WD)	On right rear of transmission. See Fig. 39 .
Vehicle Speed Sensor (4WD)	On left rear of transfer case. See Fig. 41 .
Wheel Speed Sensor (Left Front)	On left front wheelhousing. See Fig. 27 .
Wheel Speed Sensor (Right Front)	On right front wheelhousing. See Fig. 27 .

Isuzu Ascender Limited 2005 - SOLENOIDS & SOLENOID VALVES

Isuzu Ascender Limited 2005 SOLENOIDS & SOLENOID VALVES LOCATION

Component	Location
A/C Compressor Clutch (4.2L)	Bottom left front of engine. See Fig. 29 .
A/C Compressor Clutch (5.3L)	Right front of engine. See Fig. 28 .
Automatic Transmission Shift Lock Actuator	In lower console. See Fig. 57 .
Camshaft Actuator Solenoid Assembly (4.2L)	On right front of cylinder head. See Fig. 14 .
Coolant Bypass Valve	Right rear of engine compartment. See Fig. 10 .
Door Lock Actuator (Driver's)	In driver's door. See Fig. 81 .
Door Lock Actuator (Front Passenger's)	In right front door. See Fig. 81 .
Door Lock Actuator (Left Rear)	In left rear door. See Fig. 82 .
Door Lock Actuator (Liftgate)	In liftgate. See Fig. 93 .
Door Lock Actuator (Right Rear)	In right rear door. See Fig. 82 .
Evaporative Emission Canister Vent Solenoid	Rear of fuel tank. See Fig. 94 .
Evaporative Emission (EVAP) Canister Purge Solenoid (4.2L)	Left side of engine. See Fig. 26 .
Evaporative Emission (EVAP) Canister Purge Solenoid (5.3L)	On top of engine. See Fig. 22 .
Front Axle Actuator	Lower right front of engine, on oil pan. See Fig. 36 .
Fuel Injector 1 (4.2L)	Left side of engine. See Fig. 25 .
Fuel Injector 2 (R), 1 (L) (5.3L)	Right side of engine. See Fig. 106 .
Fuel Injector 2 (4.2L)	Left side of engine. See Fig. 25 .
Fuel Injector 3 (4.2L)	Left side of engine. See Fig. 25 .
Fuel Injector 4 (R), 3 (L) (5.3L)	Right side of engine. See Fig. 106 .
Fuel Injector 4 (4.2L)	Left side of engine. See Fig. 25 .
Fuel Injector 5 (4.2L)	Left side of engine. See Fig. 25 .
Fuel Injector 6 (R), 5 (L) (5.3L)	Right side of engine. See Fig. 106 .
Fuel Injector 6 (4.2L)	Left side of engine. See Fig. 25 .
Fuel Injector 8 (R), 7 (L) (5.3L)	Right side of engine. See Fig. 106 .
Ignition Lock Cylinder Control Actuator	In steering column. See Fig. 62 .
Secondary Air Injection (AIR) Solenoid	Right rear of engine compartment. See Fig. 111 .

Isuzu Ascender Limited 2005 - SWITCHES

Isuzu Ascender Limited 2005 SWITCHES LOCATION

Component	Location
A/C Low Pressure Switch	At right rear of underhood compartment. See Fig. 15 .
Brake Fluid Level Switch	In brake master cylinder fluid reservoir. See Fig. 3 .
Engine Oil Pressure Switch (4.2L)	On bottom right side of engine. See Fig. 30 .
Ignition And Key Alarm Switch Assembly	In steering column. See Fig. 61 .
Liftgate Ajar Switch	On liftgate. See Fig. 93 .
Liftglass Ajar Switch	Inside top of liftgate. See Fig. 93 .
Park Brake Switch	On park brake assembly. See Fig. 57 .
Park/Neutral Position Switch	On left side of transmission. See Fig. 37 .
Stoplamp Switch (W/ EAP)	Top of brake pedal bracket. See Fig. 103 .
Stoplamp Switch (W/O EAP)	On brake pedal support. See Fig. 59 .
Windshield Washer Fluid Level Switch	In engine compartment, mounted on fluid reservoir. See Fig. 11 .

Isuzu Ascender Limited 2005 - MISCELLANEOUS

Isuzu Ascender Limited 2005 MISCELLANEOUS LOCATION

Component	Location
Audio Amplifier	In rear compartment, behind left side panel. See Fig. 88 .
Blower Motor Resistor Assembly	On bottom of blower assembly. See Fig. 100 .
Cellular Antenna	Under right rear seat. See Fig. 60 .
Cellular Microphone	In upper console. See Fig. 76 .
Data Link Connector	Below dash, above accelerator pedal. See Fig. 56 .
Generator (4.2L)	Left front of engine. See Fig. 7 .
Generator (5.3L)	Top left of engine. See Fig. 8 .
Horn Assembly	In left front of engine compartment. See Fig. 2 .
Ignition Coil 1 (4.2L)	Top of engine. See Fig. 16 .
Ignition Coil 1 (5.3L)	Top left side of engine. See Fig. 22 .
Ignition Coil 2 (4.2L)	Top of engine. See Fig. 16 .
Ignition Coil 2 (5.3L)	Top right side of engine. See Fig. 19 .
Ignition Coil 3 (4.2L)	Top of engine. See Fig. 16 .
Ignition Coil 3 (5.3L)	Top left side of engine. See Fig. 22 .
Ignition Coil 4 (4.2L)	Top of engine. See Fig. 16 .
Ignition Coil 4 (5.3L)	Top right side of engine. See Fig. 19 .
Ignition Coil 5 (4.2L)	Top of engine. See Fig. 16 .
Ignition Coil 5 (5.3L)	Top left side of engine. See Fig. 22 .
Ignition Coil 6 (4.2L)	Top of engine. See Fig. 16 .
Ignition Coil 6 (5.3L)	Top right side of engine. See Fig. 19 .
Ignition Coil 7 (5.3L)	Top left side of engine. See Fig. 22 .
Ignition Coil 8 (5.3L)	Top right side of engine. See Fig. 19 .
Inflatable Restraint I/P Module	Right side of I/P. See Fig. 65 .
Inflatable Restraint Roof Rail Module (Left)	At left "B" pillar. See Fig. 70 .
Inflatable Restraint Roof Rail Module (Right)	At right "B" pillar. See Fig. 85 .
Inflatable Restraint Steering Wheel Module	On steering wheel. See Fig. 63 .
Navigation Antenna	Under right rear seat. See Fig. 107 .
Noise Reduction Microphone	In upper console. See Fig. 76 .
SP201	Lower right center of dash. See Fig. 68 .
SP205	Below left side of I/P. See Fig. 54 .
SP306	Under right rear seat. See Fig. 83 .
Steering Wheel Control Assembly	On steering column. See Fig. 61 .
Throttle Body (5.3L)	On top front of engine. See Fig. 20 .
Trailer Connector	Under rear bumper. See Fig. 95 .

Isuzu Ascender Limited 2005 - CONNECTORS

Isuzu Ascender Limited 2005 CONNECTORS LOCATION

Component	Location
C100 (Black, 10 Pin)	At left front of engine. See Fig. 5 .
C101 (Black, 38 Pin)	At left side of engine compartment. See Fig. 3 .
C102 (Black, 4 Pin)	Behind left headlamp. See Fig. 110 .
C103 (Black, 4 Pin)	Behind right headlamp. See Fig. 110 .
C104 (Black, 10 Pin)	At top rear of engine. See Fig. 16 .
C105 (Black, 10 Pin)	Left rear of engine compartment. See Fig. 4 .
C107 (Black, 38 Pin)	At rear of engine compartment. See Fig. 18 .
C108 (Light Gray, 8 Pin)	On top right side of engine. See Fig. 19 .
C109 (Light Gray, 8 Pin)	On top left side of engine. See Fig. 22 .
C118 (Black, 6 Pin)	On top left side of radiator fan shroud. See Fig. 2 .
C201 (Black, 18 Pin)	At base of steering column. See Fig. 98 .
C202 (Black, 4 Pin)	Below center of dash. See Fig. 68 .
C203 (Yellow, 4 Pin)	On lower right side of dash. See Fig. 65 .
C221 (Black, 8 Pin)	Behind glove box. See Fig. 65 .
C225 (Black, 10 Pin)	Under left side of I/P. See Fig. 102 .
C301 (Black, 8 Pin)	Under right rear seat.
C304 (Blue, 40 Pin)	On rear floor area, under carpet. See Fig. 84 .
C305 (Black, 16 Pin)	Inside upper console. See Fig. 76 .
C306 (Black, 16 Pin)	Under left rear seat. See Fig. 84 .
C307 (Gray, 18 Pin)	Beneath rear of lower console. See Fig. 73 .
C308 (Black, 6 Pin)	Above left rear door. See Fig. 53 .
C309 (Black, 10 Pin)	Under rear lower console. See Fig. 73 .
C310 (Black, 2 Pin)	Right side of transmission. See Fig. 42 .
C311 (W/O Power) (Black, 4 Pin)	Lower front of driver's seat. See Fig. 104 .
C311 (W/Power) (Black, 18 Pin)	Under front of driver's seat. See Fig. 104 .
C314 (Black, 16 Pin)	Lower front of passenger's seat. See Fig. 105 .
C316 (Black, 8 Pin)	Under left side of I/P. See Fig. 102 .
C317 (Yellow, 2 Pin)	Under driver's seat. See Fig. 104 .
C318 (Yellow, 2 Pin)	Under passenger's seat. See Fig. 105 .
C401 (Black, 12 Pin)	Behind right rear body side panel. See Fig. 91 .
C500 (Black, 12 Pin)	Midpoint of leading edge of left front door. See Fig. 77 .
C600 (Black, 12 Pin)	Midpoint of leading edge of right front door. See Fig. 77 .
C700 (White, 17 Pin)	Midpoint of leading edge of left rear door. See Fig. 78 .
C800 (White, 17 Pin)	Midpoint of leading edge of right rear door. See Fig. 78 .
C900 (Black, 6 Pin)	Top of liftgate. See Fig. 87 .
C901 (Gray, 2 Pin)	Inside liftgate. See Fig. 92 .

Isuzu Ascender Limited 2005 - GROUNDS

Isuzu Ascender Limited 2005 GROUNDS LOCATION

Component	Location
G101	At left side of engine compartment. See Fig. 4 .
G102	At left side of engine compartment. See Fig. 4 .
G103	At right rear of engine compartment. See Fig. 15 .
G104	At left rear of hood. See Fig. 9 .
G105	At left side of engine compartment. See Fig. 4 .
G106	On left front wheelwell. See Fig. 31 .
G107 (4.2L)	On lower left side of engine. See Fig. 33 .
G107 (5.3L)	Lower left side of engine. See Fig. 35 .
G108 (4.2L)	On lower left side of engine. See Fig. 34 .
G108 (5.3L)	Lower left side of engine. See Fig. 35 .
G109 (4.2L)	On lower left side of engine. See Fig. 34 .
G109 (5.3L)	Left side of engine. See Fig. 108 .
G110 (4.2L)	On lower left side of engine. See Fig. 34 .
G110 (5.3L)	Lower left side of engine. See Fig. 35 .
G201	Near right front of lower console. See Fig. 68 .
G302	On lower left "B" pillar. See Fig. 70 .
G303	On lower right "B" pillar. See Fig. 85 .
G304	Outside of left frame rail, near electronic brake control module. See Fig. 32 .
G305	On outside of left frame rail, near fuel tank. See Fig. 33 .
G306	On body panel, left of rear door. See Fig. 89 .
G401	On lower left "D" pillar. See Fig. 89 .
G402	On lower right "D" pillar. See Fig. 91 .
G403	On left side of rear frame crossmember. See Fig. 86 .