2005 TOYOTA AVENSIS blower

D25085
B02389
ON 01±28
± INTRODUCTIONHOW TO TROUBLESHOOT ECU CONTROLLED
SYSTEMS
AVENSIS REPAIR MANUAL (RM1018E)

Do not apply heat directly to the parts in the ECU.
3. WATER SPRINKLING METHOD: When the malfunc-
tion seems to occur on a rainy day or in high±humid-
ity.
(a) Sprinkle water onto the vehicle and check if the malfunc-
tion occurs.
NOTICE:

Never sprinkle water directly onto the engine
compartment, but indirectly change the temperature
and humidity by spraying a mist of water onto the ra-
diator front surface.

Never apply water directly onto the electronic compo-
nents.
HINT:
If a vehicle is subject to water leakage, the leaking water may
contaminate the ECU. When testing a vehicle with a water leak-
age problem, this factor must also be considered.
4. OTHERS: If the malfunction seems to occur when
electrical load is excessive.
(a) Turn on all the electrical equipment including the heater
blower, headlights, rear window defogger, etc., and check
if the malfunction occurs.

02±50
± PREPARATIONHEATER & AIR CONDITIONER
AVENSIS REPAIR MANUAL (RM1018E)
09870±00025A/C Quick Joint Puller No.2AIR CONDITIONING RADIATOR
ASSY
09950±50013Puller C SetAIR CONDITIONING RADIATOR
ASSY
BLOWER ASSY
(09951±05010)Hanger 150AIR CONDITIONING RADIATOR
ASSY
BLOWER ASSY
(09952±05010)Slide ArmAIR CONDITIONING RADIATOR
ASSY
BLOWER ASSY
(09953±05020)Center Bolt 150AIR CONDITIONING RADIATOR
ASSY
BLOWER ASSY
(09954±05021)Claw No.2AIR CONDITIONING RADIATOR
ASSY
BLOWER ASSY
Recomended Tools
09040±00011Hexagon Wrench SetAIR CONDITIONING RADIATOR
ASSY
W/RECEIVER CONDENSER ASSY
(09043±20050)Socket Hexagon Wrench 5AIR CONDITIONING RADIATOR
ASSY
(09043±20100)Socket Hexagon Wrench 10W/RECEIVER CONDENSER ASSY
09041±00030Torx Driver T30AIR CONDITIONING RADIATOR
ASSY
BLOWER ASSY
09042±00010Torx Socket T30AIR CONDITIONING RADIATOR
ASSY
BLOWER ASSY
09070±20010Moulding RemoverAIR CONDITIONING CONTROL
ASSY
AIR CONDITIONING RADIATOR
ASSY
BLOWER ASSY
09216±00021Belt Tension GaugeV (COOLER COMPRESSOR TO
CRANKSHAFT PULLEY) BELT NO.1

031HI±01
03±62
± SERVICE SPECIFICATIONSHEATER AND AIR CONDITIONING
AVENSIS REPAIR MANUAL (RM1018E)
TORQUE SPECIFICATION
Part TightenedN
mkgf
cmft
lbf
V (COOLER COMPRESSOR TO CRANKSHAFT PULLEY) BELT NO. 1
Tighten2.52522 in.
lbf
Fully tighten3939029
AIR CONDITIONER RADIATOR ASSY
Air conditioning tube assy x Cooler evaporator sub±assy No. 13.53530 in.
lbf
Air conditioner unit assy x Body9.810087 in.
lbf
BLOWER ASSY
Blower assy x Body Bolt:9.810087 in.
lbf
W/PULLEY COMPRESSOR ASSY (3ZZ±FE)
W/pulley compressor assy x Engine2930021
Cooler refrigerant discharge hose No. 1 x W/pulley compressor assy9.810087 in.
lbf
Cooler refrigerant suction hose No. 1 x W/pulley compressor assy9.810087 in.
lbf
W/PULLEY COMPRESSOR ASSY (1ZZ±FE)
W/pulley compressor assy x Engine2930021
Cooler refrigerant discharge hose No. 1 x W/pulley compressor assy9.810087 in.
lbf
Cooler refrigerant suction hose No. 1 x W/pulley compressor assy9.810087 in.
lbf
W/PULLEY COMPRESSOR ASSY (1AZ±FSE)
W/pulley compressor assy x Engine2930021
Cooler refrigerant discharge hose No. 1 x W/pulley compressor assy9.810087 in.
lbf
Cooler refrigerant suction hose No. 1 x W/pulley compressor assy9.810087 in.
lbf
W/PULLEY COMPRESSOR ASSY (1AZ±FE)
W/pulley compressor assy x Engine2930021
Cooler refrigerant discharge hose No. 1 x W/pulley compressor assy9.810087 in.
lbf
Cooler refrigerant suction hose No. 1 x W/pulley compressor assy9.810087 in.
lbf
W/PULLEY COMPRESSOR ASSY (1CD±FTV)
W/pulley compressor assy x Engine2930021
Cooler refrigerant discharge hose No. 1 x W/pulley compressor assy9.810087 in.
lbf
Cooler refrigerant suction hose No. 1 x W/pulley compressor assy RHD:9.810087 in.
lbf
Suction servic valve x W/pulley compressor assy LHD:9.810087 in.
lbf
Cooler refrigerant suction hose No. 1 x Suction servic valve9.810087 in.
lbf
W/RECEIVER CONDENSER ASSY
Cap x W/receiver condenser assy2.92925 in.
lbf
Magnet valve x W/receiver condenser assy3.43530 in.
lbf
Discharge tube x Magnet valve3.43530 in.
lbf
Discharge tube x W/receiver condenser assy5.45547 in.
lbf
Liquid tube sub±assy B x W/receiver condenser assy5.45547 in.
lbf
Discharge hose sub±assy x W/receiver condenser assy5.45547 in.
lbf
Liquid tube sub±assy A x W/receiver condenser assy5.45547 in.
lbf
HEAER ASSY
Heater assy x Body7.57666 in.
lbf

I36146
Display code R/FDEFLHD:
I36147
Display code RHD:R/FDEF
Blower level Step No.Display
codeConditions
Air flow bent Air inlet damper Compressor
ºCOOLº side (Full closed)Air mix damper
OFF FRESH
FACE 0
1
2
3
6
7
8
9
104
51
16
16
16
16
16
16
16
31 0
1
2
3
6
7
8 4
5
9FACE
FACE
FACE
B/L
FOOT1
FOOT/ DEF.
DEF.FRESH
ON
ON
ON
ON
ON
ON
ONºCOOLº side (Full closed)
ºCOOLº side (Full closed)
ºCOOLº side (Full closed)
ºCOOLº/ ºHOT º (50 % open)
ºHOTº side (Full opened)
FOOT FACE1FRESH
FRESH
RECIRCULATION
RECIRCULATION
RECIRCULATION
RECIRCULATION
RECIRCULATION
RECIRCULATIONHot gas magnetic valve
ºCOOLº/ ºHOT º (50 % open)
ºHOTº side (Full opened)
ºHOTº side (Full opened)ON
ON
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF OFF
ºHOTº side (Full opened) OFF
± DIAGNOSTICSAIR CONDITIONING SYSTEM
05±1093
AVENSIS REPAIR MANUAL (RM1018E)
6. ACTUATOR CHECK
(a) After entering the DTC check mode (Sensor Check
Mode) press the R/F switch.
(b) Since each damper, motor and relay automatically oper-
ates at 1 second intervals beginning in order from 10 in
the temperature display, check the temperature and air
flow from visual and by hand.
If the slower display is desired, press the DEF switch and
change it to step operation. Each time the DEF switch is
pressed, the display changes by 1 step.
HINT:

Codes are displayed from the smaller to the larger num-
bers in order.

To cancel the check mode, press the OFF switch.

050TH±09
I30150
Inspector 's name:
Customer 's NameVIN
Production Date
Licence No.
Odometer Readingkm
Miles Date vehicle
Brought In / /
Date of Problem Occurrence
How Often does Problem Occur?
Weather
Outdoor Temperature / /

Continuous
Intermittent ( times a day)

Fine
Cloudy
Snowy
Various / Other

Hot
Warm
Cool
Cold (Approx.
F

C)
Symptoms
Blower motor does not operate

Blower motor speed does not change
(Always Hi, Always Mid, Always Lo) Air Flow Control
Faulty

Cabin temperature does not go down

Response is slow

Cannot change between FRS and REC
(Always Fresh or always Recirculating)

Will not enter the desired mode Temperature
Control Faulty
Air Inlet Control
Faulty
Vent Control
Faulty
DTC Check1st Time
2nd Time
Normal Code
Malfunction Code (Code )

Normal Code
Malfunction Code (Code )
AIR CONDITIONING SYSTEM Check Sheet

Cabin temperature does not rise

Mode will not change 05±1090
± DIAGNOSTICSAIR CONDITIONING SYSTEM
AVENSIS REPAIR MANUAL (RM1018E)
CUSTOMER PROBLEM ANALYSIS CHECK

050TM±13
05±1100
±
DIAGNOSTICS AIR CONDITIONING SYSTEM
AVENSIS REPAIR MANUAL (RM1018E)
PROBLEM SYMPTOMS TABLE
If the normal code is displayed during DTC check although the problem still occurs, check the circuits for
each problem symptom in the order given in the table below, and proceed to the relevant troubleshooting.
SymptomSuspect AreaSee page
Whole functions of the A/C system does not operate.
1. IG power source circuit
2. A/C amplifier assy
3. Engine ECU 1AZ±FSE: 1AZ±FE:
1ZZ±FE/3ZZ±FE:
1CD±FTV:05±1144
05±1098 05±294
05±149 05±5
05±528
Air Flow Control : No blower operation
1. Blower motor circuit
2. Heater relay circuit
3. Blower w/fan motor sub±assy
4. A/C amplifier assy05±1148
05±1146
05±1148
05±1098
Air Flow Control : No blower control1. Blower motor circuit05±1148
Air Flow Control : Insufficient air out
1. Blower w/fan motor sub±assy
2. Blower motor circuit
3. A/C amplifier assy05±1148
05±1148
05±1098
Temperature Control : Cool air does not come out
1. Volume of refrigerant
2. Drive belt tension
3. Refrigerant pressure
4. Air conditioner magnetic valve circut
5. Pressure sensor circuit
6. Air mix control servomotor circuit
7. Air mix damper position sensor circuit
8. Room temp. sensor circuit
9. Ambient temp. sensor circuit
10.A/C amplifier assy55±24
55±46
55±24
05±1151 05±1116
05±1133
05±1122
05±1102
05±1106
05±1098
Temperature Control : Warm air does not come out
1. Air mix control servomotor circuit
2. Air mix damper position sensor circuit
3. Ambient temp. sensor circuit
4. Room temp. sensor circuit
5. A/C amplifier assy
6. Heater radiator05±1133
05±1122
05±1106
05±1102
05±1098
±
Temperature Control : Output air is warmer or cooler than the set
temperature or response is slow.
1. Room temp. sensor circuit
2. Ambient temp. sensor circuit
3. Solar sensor circuit
4. Air mix damper position sensor circuit
5. Air mix control servomotor circuit
6. Evaporator temp. sensor circuit
7. A/C amplifier assy05±1102
05±110605±1113
05±1122
05±1133
05±1109
05±1098
Temperature Control : No temperature control (only Max. cool or Max. warm)
1. Room temp. sensor circuit
2. Ambient temp. sensor circuit
3. Solar sensor circuit
4. Air mix damper position sensor circuit
5. Air mix control servomotor circuit
6. Evaporator temp. sensor circuit
7. A/C amplifier assy05±1102
05±1106
05±1113
05±1122
05±1133
05±1109
05±1098
No air inlet control1. Recirculation damper servomotor circuit
2. A/C amplifier assy05±1153
05±1098
No air outlet control
1. Air outlet damper position sensor circuit
2. Air outlet control servomotor circuit
3. A/C amplifier assy05±1126
05±1136
05±1098

05C7K±01
I36145
A15A16
1211
2423 19 1615
20191817161514131211 8 7 6 5 4 3 2 1
10 9 8 7 6 5 4 3 2 1 10 9
2221 1817 141320 05±1098
± DIAGNOSTICSAIR CONDITIONING SYSTEM
AVENSIS REPAIR MANUAL (RM1018E)
TERMINALS OF ECU
1. AIR CONDITIONER AMPLIFIER ASSY
Terminal No. (Symbols)Wiring ColorConditionSpecification
A16±5 (BLW) ±
A16±13 (GND)R ± W±BIG SW: ON
Front blower: OperatePulse generation
A16±7 (PRE) ±
A16±18 (SG)L±W ± G±W
Start engine
Refrigerant pressure: 0 kPa (0 kgf/cm2, 0 psi)
3,138 MPa
(32.0 kgf/cm2, 455 psi)
0.5
4.8 V
A15±20 (MPX±) ±
A16±13 (GND)P ± W±BMultiplex communication circuit±
A15±10 (MPX+) ±
A16±13 (GND)P±B ± W±BMultiplex communication circuit±
A15±6 (FRS) ±
A16±13 (GND)P±B ± W±BIG SW: ON
R/F SW: RECIRCULATION
FRESH10 to 14
Below 1.0 V
A15±5 (REC) ±
A16±13 (GND)R±Y ± W±BIG SW: ON
R/F SW: FRESH
RECIRCULATION10 to 14
Below 1.0 V
A16±17 (HR) ±
A16±13 (GND)GR±R ± W±BIG SW: ON
Front blower: OFF
Operate10 to 14
Below 1.0 V
A15±4 (AOF) ±
A16±13(GND)L±B ± W±BIG SW: ON
Mode switch: DEF.
FACEBelow 1.0
10 to 14 V
A15±3 (AOD) ±
A16±13 (GND)LG±B ± W±BIG SW: ON
Mode switch: FACE
DEF.Below 1.0
10 to 14 V
A16±12 (IG) ±
A16±13 (GND)R±W ± W±BIG SW: LOCK
ONBelow 10 to 14 V
A15±2 (AMPH) ±
A16±13 (GND)W ± W±BIG SW: ON
Set passenger side temp.: MAX. COOL
MAX. HOTBelow 1.0
10 to 14 V
A15±1 (AMPC) ±
A16±13 (GND)Y ± W±BIG SW:
Set passenger side temp.: MAX HOT
MAX. COOLBelow 1.0
10 to 14 V
A15±12 (AMDH) ±
A16±13 (GND)P±L ± W±BIG SW:
Set driver side temp.: MAX. COOL
MAX. HOTBelow 1.0
10 to 14 V
A15±11 (AMDC) ±
A16±13 (GND)B ± W±BIG SW:
Set driver side temp.: MAX HOT
MAX. COOLBelow 1.0
10 to 14 V
A16±13 (GND) ±
Body groundW±B ± Body groundAlwaysContinuity
A16±24 (+B) ±
A16±13 (GND)W±R ± W±BAlways10 to 14 V
A16±8 (TPD) ±
A15±14 (SG±2)GR ± Y±RIG SW: ON
Set driver side temp.: MAX HOT
MAX. COOL1.0
4.0 V
A16±20 TPP ±
A15±13 (SG±1)V ± PIG SW: ON
Set passenger side temp.: MAX HOT
MAX. COOL1.0
4.0 V
A16±9 (TSD) ±
A16±13 (GND)LG ± W±BIG SW: ON
Solar sensor subject to electric light0.8 to 3.3 V
A16±21 (TSP) ±
A16±13 (GND)L ± W±BIG SW: ON
Solar sensor subject to electric light0.8 to 3.3 V

I35353
Recirculation Damper Servo Sub±assy
Mode Damper Servo Sub±assy
Evaporator Temp. Sensor
Evaporator
Airmix Damper Servo Sub±assy
Airmix No.2 Damper
Servo Sub±assy
Blower Motor ControlBlower w/ Fan Motor
Sub±assy
± DIAGNOSTICSAIR CONDITIONING SYSTEM
05±1097
AVENSIS REPAIR MANUAL (RM1018E)