Servomotor TOYOTA AVENSIS 2005 Service Repair Manual

050TJ±13
05±1094
±
DIAGNOSTICS AIR CONDITIONING SYSTEM
AVENSIS REPAIR MANUAL (RM1018E)
DIAGNOSTIC TROUBLE CODE CHART
If malfunction code is displayed during the DTC check (sensor check), ch\
eck the circuit listed for the code
in the table below (Proceed to the page given for that circuit).
DTC No.
(See Page)Detection ItemTrouble AreaMemory
00Normal±±
11 *1
(05±1102)
Room temperature sensor circuit
(open/short)
Cooler thermistor (room temp. sensor)

Harness or connector between cooler thermistor (room
temp. sensor) and A/C amplifier assy

A/C amplifier assy

(8.5 min. or more)
12 *2
Ambient temperature sensor circuit
(open/short)
Thermistor assy (ambient temp. sensor)

Harness or connector between thermistor assy (ambient
temp. sensor) and combination meter

Combination meter12
(05±1106)
Combination meter

Harness or connector between combination meter and A/C
amplifier assy

A/C amplifier assy
(8.5 min. or more)
13
(05±1109)
Evaporator temperature sensor circuit
(open/short)
Cooler thermistor No.1 (evaporator temp. sensor)

Harness or connector between cooler thermistor No.1
(evaporator temp. sensor) and A/C amplifier assy

A/C amplifier assy

(8.5 min. or more)
21 *3
Solar sensor circuit (open) (Passenger
side)
Automatic light control sensor (solar sensor)

Harness or connector between automatic light control sen-
( l ) d A/C lifi

(8.5 min. or more)
21
(05±1113)
Solar sensor circuit (short) (Passenger
side)sor (solar sensor) and A/C amplifier assy

A/C amplifier assy
±
23
(05±1116)
Pressure sensor circuit
A/C tube assy (pressure sensor)

Harness or connector between A/C tube assy (pressure
sensor) and A/C amplifier assy

A/C amplifier assy
±
24 *3
Solar sensor circuit (open)
(Driver side)
Automatic light control sensor (solar sensor)

Harness or connector between automatic light control sen-
( l ) d A/C lifi

(8.5 min. or more)
24
(05±1119)
Solar sensor circuit (short)
(Driver side)sor (solar sensor) and A/C amplifier assy

A/C amplifier assy
±
31
(05±1122)
Air mix damper position sensor circuit
(Passenger side)
Air mix damper servo sub±assy (air mix damper position
sensor)

Harness or connector between air mix damper servo sub±
assy (air mix damper position sensor) and A/C amplifier
assy

A/C amplifier assy

(1 min. or more)
33
(05±1126)
Air outlet damper position sensor circuit
Mode damper servo sub±assy (mode damper position sen-
sor)

Harness or connector between mode damper servo sub±
assy (mode damper position sensor) and A/C amplifier assy

A/C amplifier assy

(1 min. or more)
36
(05±1129)
Air mix damper position sensor circuit
(Driver side)
Air mix damper servo sub±assy (Air mix damper position
sensor)

Harness or connector between air mix damper servo sub±
assy (air mix damper position sensor) and A/C amplifier
assy

A/C amplifier assy

(1 min. or more)
41
(05±1133)
Air mix damper control servomotor
(Passenger side)
Air mix damper servo sub±assy (air mix damper control)

Harness or connector between air mix damper servo sub±
assy (air mix damper control) and A/C amplifier assy

A/C amplifier assy

(15 sec.)

±
DIAGNOSTICS AIR CONDITIONING SYSTEM
05±1095
AVENSIS REPAIR MANUAL (RM1018E)43
(05±1136)
Air outlet damper control servomotor
Mode damper servo sub±assy (mode damper control)

Harness or connector between mode damper servo sub±
assy (mode damper control) and A/C amplifier assy

A/C amplifier assy

(15 sec.)
46
(05±1139)
Air mix damper control servomotor
(Driver side)
Air mix damper servo sub±assy (air mix damper control )

Harness or connector between air mix damper servo sub±
assy (air mix damper control servomotor) and A/C amplifier

A/C amplifier assy

(15 sec.)
HINT:

*1: If the room temp. is approx. ±18.6
C (±3.7
F) or lower, DTC 11 may be output even though the sys-
tem is normal.

*2: If the ambient temp. is approx. ±52.9
C (±61.4
F) or lower, DTC may be output even though the
system is normal.

*3: If the check is being performed in a dark place, DTC 21 and 24 (solar \
sensor circuit abnormal) could
be displayed.

I35378
A23
Air Mix Control Servo Motor (Driver Side) A/C Control Assembly
M
MAX
HOT4P±L
A15 AMDH12
MAX
COOL5B
A15 AMDC11
PT 3GR
A16 TPD8
VZ 2Y±B
A16 S5±22
GND 1Y±R
A15 SG±214
± DIAGNOSTICSAIR CONDITIONING SYSTEM
05±1139
AVENSIS REPAIR MANUAL (RM1018E)
DTC 46 AIR MIX DAMPER CONTROL SERVOMOTOR
CIRCUIT (DRIVER SIDE)
CIRCUIT DESCRIPTION
The air mix damper servo sub±assy is controlled by the A/C amplifier and moves the air mix damper to the
desired position.
DTC No.Detection ItemTrouble Area
46Air mix damper position sensor value does not change even if
A/C amplifier operated air mix damper control servomotor.

Air mix damper servo sub±assy (air mix damper control )

Harness or connector between air mix damper servo sub±
assy (air mix damper control servomotor) and A/C amplifier

A/C amplifier assy
WIRING DIAGRAM
05A8A±02

I35383
RHD Models:
MAX. COOL MAX. HOT
1
2
3
4
5
MAX HOTMAX COOL
I36141
LHD Models:
MAX. COOL MAX. HOT
MAX HOTMAX COOL
±
DIAGNOSTICS AIR CONDITIONING SYSTEM
05±1141
AVENSIS REPAIR MANUAL (RM1018E)
2INSPECT AIRMIX DAMPER SERVO SUB±ASSY
(a)Remove the air mix damper servo sub±assy.
(b)Connect the positive (+) lead from the battery to terminal
MAX HOT and negative (±) lead to terminal MAX COOL,
then check that the lever turns to ºHOTº side smoothly.
(c)Connect the positive (+) lead from the battery to terminal MAX COOL and negative (±) lead to terminal MAX HOT,
then check that the lever turns to ºCOOLº side smoothly.
NGREPLACE AIRMIX DAMPER SERVO SUB±ASSY
OK
3CHECK HARNESS AND CONNECTOR(AIRMIX DAMPER SERVO SUB±ASSY ± A/C AMPLIFIER)
(a)Check for an open or short circuit in harness and connector between air mix c\
ontrol servomotor and
A/C amplifier (See page 01±32).
NG REPAIR OR REPLACE HARNESS ORCONNECTOR
OK
REPLACE AIR CONDITIONING AMPLIFIER

I35378
A25
Air Vent Mode Control Servo Motor A/C Control Assembly
M
FACE 5L±B
A15 AOF4
DEF 4LG±B
A15 AOD3
PT 3GR±R
A16 TPM19
VZ 2BR±W
A16 S5±314
GND 1G±W
A15 SG±315 05±1136
± DIAGNOSTICSAIR CONDITIONING SYSTEM
AVENSIS REPAIR MANUAL (RM1018E)
DTC 43 AIR OUTLET DAMPER CONTROL
SERVOMOTOR CIRCUIT
CIRCUIT DESCRIPTION
This circuit turns the servomotor and changes each mode damper position by the signals from the A/C ampli-
fier assy. When the AUTO switch is on, the A/C amplifier changes the mode automatically between ºFACEº,
ºBI±LEVELº, ºFOOTº and ºFOOT/DEFº according to the temperature setting.
DTC No.Detection ItemTrouble Area
43Air mode damper position sensor value does not change even
if A/C amplifier operated mode damper control servomotor.

Mode damper servo sub±assy (mode damper control)

Harness or connector between mode damper servo sub±
assy (mode damper control) and A/C amplifier assy

A/C amplifier assy
WIRING DIAGRAM
05A87±02

I35377
A24
Air Mix Control Servo Motor (Front Passenger Side) A/C Control Assembly
MA15 AMPH W
(*1)
W
(*2) W
(*2)5
IQ1 MAX 4 (*1)
HOT 5 (*2)
A15 AMPC Y
(*1)
Y
(*2) Y
(*2)4
IQ1 MAX 5 (*1)
COOL 4 (*2)2
1
A16 TPP V
(*1)
V
(*2) V
(*2)3
IQ1 PT20
3
A16 S5±1 R
(*1)
R
(*2) R
(*2)1
IQ1 VZ 2 (*1)
1 (*2)1
A15 SG±1 P
(*1)
P
(*2) P
(*2)2
IQ1 GND
1 (*1)
2 (*2)13
*1: LHD
*2: RHD
± DIAGNOSTICSAIR CONDITIONING SYSTEM
05±1133
AVENSIS REPAIR MANUAL (RM1018E)
DTC 41 AIR MIX DAMPER CONTROL SERVOMOTOR
CIRCUIT(PASSENGER SIDE)
CIRCUIT DESCRIPTION
This air mix damper servo sub±assy is controlled by the A/C amplifier and moves the air mix damper to the
desired position.
DTC No.Detection ItemTrouble Area
41Air mix damper position sensor value does not change even if
A/C amplifier operated air mix damper control servomotor.

Air mix damper servo sub±assy (air mix damper control)

Harness or connector between air mix damper servo sub±
assy (air mix damper control) and A/C amplifier assy

A/C amplifier assy
WIRING DIAGRAM
05A83±02

I35383
LHD Models:
MAX. COOL MAX. HOT
1
2
3
4
5
MAX HOTMAX COOL
I36141
LHD Models:
MAX. COOL MAX. HOT
MAX HOTMAX COOL
±
DIAGNOSTICS AIR CONDITIONING SYSTEM
05±1135
AVENSIS REPAIR MANUAL (RM1018E)
2INSPECT AIRMIX NO.2 DAMPER SERVO SUB±ASSY
(a)Remove the air mix damper servo sub±assy.
(b)Connect the positive (+) lead from the battery to terminal
MAX HOT and negative (±) lead to terminal MAX COOL,
then check that the lever turns to ºHOTº side smoothly.
(c)Connect the positive (+) lead from the battery to terminal MAX COOL and negative (±) lead to terminal MAX HOT,
then check that the lever turns to ºCOOLº side smoothly.
NGREPLACE AIRMIX NO.2 DAMPER SERVO SUB±ASSY
OK
3CHECK HARNESS AND CONNECTOR(AIRMIX DAMPER NO.2 SERVO SUB±ASSY ± A/C AMPLIFIER)
(a)Check for an open or short circuit in harness and connector between air mix d\
amper control servomotor
and A/C amplifier (See page 01±32).
NG REPAIR OR REPLACE HARNESS ORCONNECTOR
OK
REPLACE AIR CONDITIONING AMPLIFIER

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

I35397
R±W (*1)1
CB A15 RECR±Y A21
Air Inlet Control
Servo Motor
5 A/C Control Assembly
3 Center J/B
Driver Side J/B
From
HTR Fuse J266
CER±W (*1)
+
1
R±W (*2)
A15 FRS P±B6
R±W (*2)
J26 HHJ/C
2
R±W (*2)
R±W (*2)
DC6
*1: LHD
*2: RHD
± DIAGNOSTICSAIR CONDITIONING SYSTEM
05±1153
AVENSIS REPAIR MANUAL (RM1018E)
RECIRCULATION DAMPER SERVOMOTOR CIRCUIT
CIRCUIT DESCRIPTION
The recirculation damper servomotor is controlled by the A/C amplifier and moves the air inlet damper to the
desired position.
WIRING DIAGRAM
05C7Q±01

I36092
LHD Models:
FRSREC
I36094
I36093
RHD Models:
FRS
REC
I36094
± DIAGNOSTICSAIR CONDITIONING SYSTEM
05±1155
AVENSIS REPAIR MANUAL (RM1018E)
2 INSPECT RECIRCULATION DAMPER SERVO SUB±ASSY
(a) Remove the recirculation damper servo sub±assy.
(b) Connect the positive (+) lead to from the battery to termi-
nal 3 and negative (±) lead to terminal 2, then check that
the arm turns to ºFRSº side smoothly.
(c) Connect the positive (+) lead to from the battery to termi-
nal 3 and negative (±) lead to terminal 1, then check that
the arm turns to ºRECº side smoothly.
If operattions are not as specified, replace the mode damper
servomotor.
NG REPLACE RECIRCULATION DAMPER SERVO
SUB±ASSY
OK