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Air Conditioning — Isuzu Ascender LS 2004 Wiring Diagram

AIR CONDITIONING

Automatic A/C Wiring Diagram (1 of 3) for Isuzu Ascender LS 2004

List of elements for Automatic A/C Wiring Diagram (1 of 3) for Isuzu Ascender LS 2004:

(at rear of lower console) hvac control module
5v ref
A/c comp status
A/c low press sw
A10
A11
A12
Air temp door ctrl
Air temp dr pos sig
Air temperature actuator (left) (behind left center of dash)
Air temperature actuator (right) (behind right center of dash)
Ambient air temp sig
Ambient air temperature sensor (above left side of grille)
Ambient light
Ambient light/ sunload sensor assembly (in center of upper dash trim panel)
B10
B11
B12
Battery
Blower fuse 35 40a
Blower motor
Blower motor control module (below right side of dash)
Blwr mtr spd ctrl
Class 2
Control
Coolant bypass ctrl
Coolant bypass valve (lwb) (right rear of engine compartment)
Def door pos sig
Defrost actuator (behind upper left center of dash)
Defrost door ctrl
G102 (at left side of engine compartment)
G103 (at right rear of engine compt)
G201
G302 (on lower left ``b" pillar)
Ground
Hot at all times
Hot in run
Hvac 1 fuse 39 10a
Hvac b fuse 36 10a
Ign 3
Inside air temp ctrl
Inside air temp sig
Inside air temperature sensor assembly (in left ``b" pillar)
Left sensor
Low ref
Low reference
Lower left air temperature sensor (in lower left air duct assembly)
Lower right air temperature sensor (in lower right air duct assembly)
Lwb
Lwr lt air temp sig
Lwr rt air temp sig
Mode actuator (behind upper left center of dash)
Mode door ctrl
Mode door pos sig
Nca
Power distribution system
Rear fuse block (below left rear seat)
Recirc door cntrl
Recirc dr pos sig
Recirculation actuator
Red
Right sensor
Solid state
Sp201 (lower right center of dash)
Swb
Tan
Underhood fuse block (on left side of engine compt)
Upper left air temperature sensor (in upper air duct)
Upper right air temperature sensor (in upper air duct)
Uppr lt air temp sig
Uppr rt air temp sig

Automatic A/C Wiring Diagram (2 of 3) for Isuzu Ascender LS 2004

List of elements for Automatic A/C Wiring Diagram (2 of 3) for Isuzu Ascender LS 2004:

(at right rear of engine compt) g103
+5v ref
4.2l
5.3l
5.3l 4.2l
5v ref
A/c compressor clutch assembly (4.2l: bottom left front of engine) (5.3l: right front of engine)
A/c fuse 30 10a
A/c low pressure switch (at right rear of underhood compt)
A/c press sig
A/c refrigerant pressure sensor (5.3l: on bottom right side of engine) (4.2l: bottom left front of engine)
A/c relay 44
A12
Ambient light sens
B11
B12
Body control module (bcm) (beneath left rear seat, on rear fuse block)
Comp rly cntrl
Cooling fan
Cooling fan ctrl
D11
Data link connector (below dash, above accelerator pedal)
E12
Ect sensor
Engine coolant temperature (ect) sensor (on left front of engine, near generator)
F12
Fan dn
Fan fuse 20 10a
Fan relay 45
Fan up
Fan/temperature switch
G103 (at right rear of engine compt)
G107 (on lower left side of engine)
G108 (on lower left side of engine)
Hall sensor
High spd maf
Hot at all times
Hot in run or start
Ign e fuse 22 10a
Inflatable restraint steering wheel module coil
Low ref
Low reference
Lt sunload sens sig
Nca
Pnk
Powertrain control module (pcm) (4.2l: on left front of engine) (5.3l: on left front of engine compt)
Radio ctrl sig
Rt sunload sens sig
Serial data
Sound system
Sounds system
Sp205 (below left side of i/p)
Steering wheel control assembly (on steering column)
Temp dn
Temp up
Underhood fuse block (on left side of engine compt)
Volume/am/fm switch
Wiper/ washer system

Automatic A/C Wiring Diagram (3 of 3) for Isuzu Ascender LS 2004

List of elements for Automatic A/C Wiring Diagram (3 of 3) for Isuzu Ascender LS 2004:

(lwb)
(not used)
(on lower right "d" pillar) g402
30a
5v reference
A10
A11
A12
A13
A14
A15
A16
Aux act door ctlr
Aux air temp dr ctlr
Aux air temp dr pos
Aux blwr mtr
Aux hvac enable
Aux mode door ctrl
Aux mode dr pos sig
Auxiliary air temperature actuator (on rear hvac module, behind right rear interior body panel)
Auxiliary blower motor (behind interior right rear trim panel)
Auxiliary blower motor (swb)
Auxiliary blower motor control processor (lwb)
Auxiliary blower motor fuse (at right quarter panel)
Auxiliary hvac control module (at rear of lower console)
Auxiliary mode actuator (lwb) (at right quarter panel)
Auxiliary mode actuator (swb) (rear of lower console)
B10
B11
B12
B13
B14
B15
B16
Battery
Class 2 data
Console mode actuator (lwb) (rear of lower console)
Console mode dr ctrl
Ctrl mode dr pos sig
Front auxiliary blower motor switch (lwb)
G201
Ground
High speed
Hot at all times
Ill
Interior lights system
Logic
Low reference
Lwb
Medium speed
Off
Rear
Rear blower resistor
Rear fuse block (below left rear seat)
Red
Rr hvac fuse 13 30a (lwb)
Sp201 (lower right center of dash)
Swb

Manual A/C Wiring Diagram (1 of 3) for Isuzu Ascender LS 2004

List of elements for Manual A/C Wiring Diagram (1 of 3) for Isuzu Ascender LS 2004:

(not used)
(on bottom of blower assembly) blower motor resistor assembly
5v ref
87a
A/c comp status
A/c low press sw
A10
A11
A12
Air temp door ctrl
Air temp dr pos sig
Air temperature actuator (left) (behind left center of dash)
Air temperature actuator (right) (behind right center of dash)
B10
B11
B12
Battery
Blower fuse 35 40a
Blower motor (below right side of dash)
Blower motor relay
Class 2
Coolant bypass ctrl
Coolant bypass valve (lwb) (right rear of engine compartment)
Def door pos sig
Defrost actuator (behind upper left center of dash)
Defrost door ctrl
G102 (at left side of engine compartment)
G103 (at right rear of engine compt)
G201
Ground
High
Hot at all times
Hot in run
Hvac control module (in dash center trim panel, beneath radio)
Hvac enable control
Hvac fuse 44 30a
Hvac i fuse 39 10a
Hvac-b fuse 36 10a
Ign 3
Low
Low ref
Lwb
Med1
Med2
Med3
Mode actuator (behind upper left center of dash)
Mode door ctrl
Mode door pos sig
Off
Off blwr mtr cntrl
Power distribution system
Rear fuse block (below left rear seat)
Recirc door ctrl
Recirculation actuator
Red
Solid state
Sp201 (lower right center of dash)
Swb
Tan
Underhood fuse block (on left side of engine compt)

Manual A/C Wiring Diagram (2 of 3) for Isuzu Ascender LS 2004

List of elements for Manual A/C Wiring Diagram (2 of 3) for Isuzu Ascender LS 2004:

(at right rear of engine compt) g103
+5v ref
A/c compressor clutch assembly (4.2: bottom left front of engine) (5.3: right front of engine)
A/c fuse 30 10a
A/c low pressure switch (at right rear of underhood compt)
A/c press sig
A/c refrigerant pressure sensor (bottom left front of engine)
A/c relay
Comp rly cntrl
Cooling fan
Cooling fan ctrl
Data link connector (below dash, above accelerator pedal)
E12
Ect sensor
Engine coolant temperature (ect) sensor (on left front of engine, near generator)
F12
Fan fuse 20 10a
Fan relay 45
G103 (at right rear of engine compt)
G107 (on lower left side of engine)
G108 (on lower left side of engine)
Hall sensor
High spd maf
Hot at all times
Hot in run or start
Ign e fuse 22 10a
Low ref
Low reference
Powertrain control module (pcm) (on left front of engine)
Serial data
Sp205 (below left side of i/p)
Underhood fuse block (on left side of engine compt)

Manual A/C Wiring Diagram (3 of 3) for Isuzu Ascender LS 2004

List of elements for Manual A/C Wiring Diagram (3 of 3) for Isuzu Ascender LS 2004:

(lwb)
(lwb) (swb)
(not used)
(on lower right ``d" pillar) g402
(swb)
(swb) (lwb)
30a
5v reference
A10
A11
A12
A13
A14
A15
A16
Auc hvac enable
Aux air temp dr ctlr
Aux air temp dr pos
Aux blwr mtr
Aux mode door ctrl
Aux mode dr ctrl
Aux mode dr pos sig
Auxiliary blower motor (behind interior right rear trim panel)
Auxiliary blower motor control processor (lwb)
Auxiliary blower motor fuse (at right quarter panel)
Auxiliary hvac control module (at rear of lower console)
Auxiliary mode actuator (lwb) (at right quarter panel)
Auxiliary mode actuator (swb) (rear of lower console)
B10
B11
B12
B13
B14
B15
B16
Battery ground
Class 2 data
Console mode actuator (lwb)
Console mode dr ctrl
Front auxiliary blower motor switch (lwb)
G201
Ground
Hot at all times
Hvac enable ctrl aux act door ctlr
Ign consl mode dr pos
Ill
Interior lights system
Logic
Low reference
Lwb
Off
Rear
Rear fuse block (below left rear seat)
Red
Rr hvac fuse 13 30a
Sp201 (lower right center of dash)
Swb

AIR CONDITIONING – Isuzu Ascender LS 2004 – SYSTEM WIRING DIAGRAMS