2005 TOYOTA AVENSIS air conditioning

I35396
R±W (*2) R±W (*2, *1) G±Y (*1)
W±B (*1)
W±B
(*1) R±W (*3, *1)
R±W (*3)
R±W (*2)CB1
CK 12 Center J/BP5
Power Heater SWA/C Control Assembly
A1611
J/C
J26H
J27F3IG
IN 6
E2
A
A J16
J/C
Driver Side J/B
DC6
From
HTR Fuse
ILHOTGASIN
*1: 1CD±FTV
*2: LHD
*3: RHD
± DIAGNOSTICSAIR CONDITIONING SYSTEM
05±1159
AVENSIS REPAIR MANUAL (RM1018E)
HOT GAS HEATER SWITCH CIRCUIT
CIRCUIT DESCRIPTION
Hot gas heater performs only when its switch turns to ON and fulfill the following 6 conditions.

Hot gas heater switch is ON.

Recirculation damper position is FRS.

Blower motor switch is in the position other than OFF.

Ambient temperature varies according to the following condition;
A/C switch ONBelow ±1.5C (32F)
A/C switch OFFBelow 8C (46F)

Air mix damper position is MAX HOT.

Water temperature is 70C (158F) or less.
WIRING DIAGRAM
05C7S±01

I32396IG
IN
E
ILL+
ILL±
I36144
HOTGASIN
A16A15
I32395
E
05±1160
±
DIAGNOSTICS AIR CONDITIONING SYSTEM
AVENSIS REPAIR MANUAL (RM1018E)
1INSPECT HETER SWITCH ASSY
(a)Check that the continuity when connecting the positive tester lead (+) and the negative tester lead (±) to the fol-
lowing terminals.
Standard:
Heater switch conditionConnecting terminalsStandard value
ONIG ± INContinuity
OFFIG ± INNo continuity
ONIG ± EContinuity
OFFIG ± ENo continuity
ONILL+ ± ILL±Continuity
OFFILL+ ± ILL±Continuity
NGREPAIR OR REPLACE HETER SWITCH ASSY
OK
2CHECK WIRE HARNESS(A/C CONTROL ASSEMBLY ± BATTERY)
(a)Remove the A/C amplifier with connectors being con- nected.
(b)Turn the ignition switch to ON.
(c)Measure the voltage between terminal HOTGASIN and GND of the A/C amplifier.
Standard:
Heater switch conditionStandard value
ON10 to 14 V
OFF0 V
NGREPAIR OR REPLACE WIRE HARNESS
OK
3CHECK WIRE HARNESS(HETER SWITCH ± BODY GROUND)
(a)Check for an open or short circuit in harness and connec- tor between heater switch and body ground
(See page 01±32).
NG REPAIR OR REPLACE WIRE HARNESS
OK
PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE

I35380
R±W
(*2)J26 J26HH
IE111
IE218
A157
MGV A/C Control Assembly
R±W
(*2)R±W R±B R±Y J/CC4
Condenser
Assembly
12
Driver Side J/B
DC6
DB5
R±W
(*1)
From
HTR Fuse
*1: LHD
*2: RHD
± DIAGNOSTICSAIR CONDITIONING SYSTEM
05±1157
AVENSIS REPAIR MANUAL (RM1018E)
HOT GAS HEATER MAGNETIC VALVE CIRCUIT
CIRCUIT DESCRIPTION
For the hot gas heater, it is necessary to fulfill the following 6 conditions.

Hot gas heater switch is ON.

Recirculation damper position is FRS.

Blower motor switch is in the position other than OFF.

Ambient temperature varies according to the following condition;
A/C switch ONBelow ±1.5C (32F)
A/C switch OFFBelow 8C (46F)

Air mix damper position is MAX HOT.

Water temperature is 70C (158F) or less.
WIRING DIAGRAM
05C7R±01

I36144
MGV
A16A15
I36136
05±1158
±
DIAGNOSTICS AIR CONDITIONING SYSTEM
AVENSIS REPAIR MANUAL (RM1018E)
1INSPECT AIR CONDITIONING AMPLIFIER
(a)Remove the A/C amplifier with connectors being con- nected.
(b)Measure the voltage between terminals MGV of the A/C amplifier and body ground.
Standard:
Recirculation switchVoltage (V)
OperateBelow 1.0
Not OperateNo Continuity
OKPROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE
NG
2INSPECT W/RECEIVER CONDENSER ASSY
(a)Apply voltage between terminals and check that the re- frigerant passages switch.
NGREPLACE W/RECEIVER CONDENSER ASSY
OK
3CHECK WIRE HARNESS(W/RECEIVER CONDENSER ASSY ± AIR CONDITIONING AMPLIFIER)
(a)Check for an open or short circuit in harness and connector between w/ receive\
r condenser assy and
A/C amplifier (See page 01±32).
NG REPAIR OR REPLACE WIRE HARNESS
OK
REPLACE AIR CONDITIONING AMPLIFIER

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

05±1154
±
DIAGNOSTICS AIR CONDITIONING SYSTEM
AVENSIS REPAIR MANUAL (RM1018E)
1PERFORM ACTUATOR CHECK
(a)Set to actuator check mode (See page 05±1091).
(b) Press the DEF switch and change to step operation.
(c) Check the air flow temperature by hand.
Display codeRecirculation damper position
0FRESH
1FRESH
2FRESH
3FRESH
4RECIRCULATION
5RECIRCULATION
6RECIRCULATION
7RECIRCULATION
8RECIRCULATION
9RECIRCULATION
NG PROCEED TO NEXT CIRCUIT INSPECTION SHOWN ON PROBLEM SYMPTOMS TABLE
OK

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

I36144
FRSREC
A16A15
05±1156
±
DIAGNOSTICS AIR CONDITIONING SYSTEM
AVENSIS REPAIR MANUAL (RM1018E)
3CHECK HARNESS AND CONNECTOR(RECIRCULATON DAMPER SERVO SUB±ASSY ± BATTERY)
(a)Check for an open or short circuit in harness and connector between recircula\
tion damper and battery
+ terminal (See page 01±32).
NG REPAIR OR REPLACE HARNESS ORCONNECTOR
OK
4 INSPECT AIR CONDITIONING AMPLIFIER(REC, FRS)
(a) Remove A/C amplifier with connectors being connected.
(b) Measure the voltage between terminal FRS of A/C ampli- fier and body ground when recirculation switch is oper-
ated, as shown in the table.
Standard:
Recirculation switchVoltage (V)
FRESHBelow 1.0
RECIRCULATION10 to 14
(c) Measure voltage between terminal REC of A/C amplifierand body ground when recirculation switch is operated,
as shown in the table.
Standard:
Recirculation switchVoltage (V)
FRESH10 to 14
RECIRCULATIONBelow 1.0
NG REPLACE AIR CONDITIONING AMPLIFIER
OK
REPAIR OR REPLACE HARNESS OR CONNECTOR