2005 TOYOTA AVENSIS air conditioning

±
DIAGNOSTICS AIR CONDITIONING SYSTEM
05±1089
AVENSIS REPAIR MANUAL (RM1018E)
10 CIRCUIT INSPECTION ( See page 05±1102 to 05± 1159 )
11 IDENTIFICATION OF PROBLEM
12 PARTS INSPECTION
13 REPAIR
14 CONFIRMATION TEST
15 END

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

05±1140
±
DIAGNOSTICS AIR CONDITIONING SYSTEM
AVENSIS REPAIR MANUAL (RM1018E)
1PERFORM ACTUATOR CHECK
(a)Set the actuator check mode (See page 05±1091).
(b) Press the DEF switch (driver side) and change to the step operation.
(c) Check the air flow temperature by hand.
Display CodeAir Mix Damper Operation
0COOL side (0 % open)
1COOL side (0 % open)
2COOL side (0 % open)
3COOL side (0 % open)
4COOL/HOT (50% open)
5COOL/HOT (50% open)
6HOT side (100% open)
7HOT side (100% open)
8HOT side (100% open)
9HOT side (100% open)
NG PROCEED TO NEXT CIRCUIT INSPECTION SHOWN ON PROBLEM SYMPTOMS TABLE
OK

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

±
DIAGNOSTICS AIR CONDITIONING SYSTEM
05±1137
AVENSIS REPAIR MANUAL (RM1018E)
INSPECTION PROCEDURE
1PERFORM ACTUATOR CHECK
(a)Warm up engine.
(b)Set the actuator check mode (See page 05±1091).
(c) Press the DEF switch and change it to the step operation.
(d) Check the air flow by hand.
Display codeAir flow condition
0FACE
1FACE
2FACE
3FACE
4FACE1
5B/L
6FOOT1
7FOOT
8FOOT/DEF
9DEF
OK PROCEED TO NEXT CIRCUIT INSPECTION
SHOWN ON PROBLEM SYMPTOMS TABLE
NG

I35385
DEF
FACE
1
2
3
4
5
DEF
FACE
05±1138
±
DIAGNOSTICS AIR CONDITIONING SYSTEM
AVENSIS REPAIR MANUAL (RM1018E)
2INSPECT MODE DAMPER SERVO SUB±ASSY
(a)Remove the mode damper servo sub±assy.
(b)Connect the positive (+) lead from the battery to terminal DEF and negative (±) lead to terminal FACE then check
that the lever turns to ºDEFº position.
(c)Connect the positive (+) lead from the battery to terminal FACE and negative (±) lead to terminal DEF then check
that the lever turn to ºFACEº position.
NGREPLACE MODE DAMPER SERVO SUB±ASSY
OK
3CHECK HARNESS AND CONNECTOR(MODE DAMPER SERVO SUB±ASSY ± A/C AMPLIFIER)
(a)Check for an open or short circuit in harness and connector between mode damp\
er servo sub±assy
and A/C amplifier (See page 01±32).
NG REPAIR OR REPLACE HARNESS ORCONNECTOR
OK
REPLACE AIR CONDITIONING AMPLIFIER

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