2005 TOYOTA AVENSIS wiring

05C7Y±01
I36138
P1
± DIAGNOSTICSCOMBUSTION TYPE POWER HEATER SYSTEM
05±1169
AVENSIS REPAIR MANUAL (RM1018E)
TERMINALS OF ECU
1. POWER HEATER ECU
Terminal No. (Symbols)Wiring ColorConditionSpecification
P1±1 (±) ± Body groundW±B ± Body groundAlwaysContinuity
P1±2 (F/P) ± Body groundL ± Body groundAlwaysContinuity
P1±3 (SW) ± Body groundG±Y ± Body groundIG SW: ON
Power heater SW: ON10 to 14
P1±5 (+) ± Body groundW ± Body groundAlwaysContinuity
P1±8 (ALT +L ) ± Body groundY ± Body groundAlternator: OperatePulse generation

I35431
Buner Motor
Glow Plug
Surface Sensor
Temp.Control Sensor
Flame Sensor13
Power
Heater
ECU
Connector BTerminal L
of AlternatorBattery
Metering Pump
Fuse (20 A)
Vehicle Side SW 14
9
12
5
6
3
4
1
2BR
G
L±Y
L B±R
Y
L±WR
1
2
3
4 5
6
7
8W±B Connector A
IG
R±G
R±L (*1)
R±Y (*2)
R±B
W±R (*1)
Y±R (*2)
*1: TMC Made
*2: TMUK Made
± DIAGNOSTICSCOMBUSTION TYPE POWER HEATER SYSTEM
05±1165
AVENSIS REPAIR MANUAL (RM1018E)
2. DESCRIPTION OF DISPLAY AND BUTTONS
(a) AF: Current Value Malfunction (Blinking at current failure)
Diag: DTC (Example: 064 Flame sensor break)
Memory Clear button: Deletion of faulty memory (Press both buttons together for longer than 2 sec.)
> Button: Scroll up of faulty memory (The past 5 codes can be stored.)
< Button: Scroll down of faulty memory (The past 5 codes can be stored.)
3. FAULTY MEMORY
(a) The ECU is able to store upto 5 pieces of faulty memory. If it is full, the new data is written over F5.
4. WIRING DIAGRAM

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

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

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

I35381
R±W
R±WR±W HF
J26 J27
IK2 IK2A15 SOL+ RR J/CC3
Compressor
Assembly
38A/C Control Assembly
(*2)
(*2)
R±W
(*1)21
Center J/B
R±W
(*1)1
CB9
CJ
Driver Side J/B
6
DCFrom
HTR
Fuse
*1: LHD
*2: RHD 2
± DIAGNOSTICSAIR CONDITIONING SYSTEM
05±1151
AVENSIS REPAIR MANUAL (RM1018E)
AIR CONDITIONER MAGNETIC VALVE CIRCUIT
CIRCUIT DESCRIPTION
The air conditioner magnetic valve is controlled by A/C amplifier.
WIRING DIAGRAM
05C7P±01

I36148
Duty Ratio =A + BA
x 100 (%)
ON 0 VOFF 5 VA
1 cycle Blower Level (Reference)
Si duty (%)
B HI
M8
M7
M6
M5
M4
M3
M2
M1
LO
26.3
30.937.8
44.751.6
58.465.3
74.583.7 100.0
I36133
B5
Blower Motor
Controller
A/C Control Assembly
SI
+B
VM
GND2
3
4
1LB
M
2
1 L±BL±BR
Driver Side J/B
DF2From
HTR
RELAY
L±B
J15
J/C A
IK5
A16 BLW L±B
2
IJ2
1
IJ2
4
IJ2 B±WB
W±B 3
IJ2
B4
Blower Motor
W±B 05±1148
± DIAGNOSTICSAIR CONDITIONING SYSTEM
AVENSIS REPAIR MANUAL (RM1018E)
BLOWER MOTOR CIRCUIT
CIRCUIT DESCRIPTION
The blower motor is operated by signals from the A/C amplifier. Blower motor speed signals are transmitted
by changes in the Duty Ratio.
Duty Ratio
The duty ratio is the ratio of the period of continuity in one cycle. For example, if A is the period of continuity
in one cycle, and then B is the period of non±continuity.
WIRING DIAGRAM
05C7O±01

I35394
Driver Side J/B
L2
DP
1
DN
5
DH B±G (*1)
B±L (*2)
G±Y9
DA
1
DH4
DF2
DF34
DA HTR HTR Relay
12
53
4L±B
To
Blower Motor GR±R
W±BA1617 A/C Control Assembly
HR
W±B
AM153
12IG1 Relay
I13
Ignition SW
G±R G±Y
AM1 IG1 1 3
G±Y
B±L (*2)1
ED1W (*2)Engine Room R/B No.3
3
3140A
ALT
1 23B (*2)
B±G (*1)W (*2) Engine Room R/B
No.1 & Engine Room J/B No.1
L
11B1 HTR
1 2
Engine Room R/B No.4
1
4C
4D1120A ALT (*3)
100A ALT (*4)
4B1
B±G (*1)
B (*2)
W±B
W±B FL MAIN
BatteryIJ
*1: Gasoline
*2: 1CD±FTV*3: 1AZ±FSE, 1AZ±FE
*4: 1ZZ±FE, 3ZZ±FE 05±1146
± DIAGNOSTICSAIR CONDITIONING SYSTEM
AVENSIS REPAIR MANUAL (RM1018E)
HEATER RELAY CIRCUIT
CIRCUIT DESCRIPTION
The heater relay is switched on by signals from the A/C amplifier. It supplies power to the blower motor.
WIRING DIAGRAM
050U2±12