2005 TOYOTA AVENSIS fuse

I36137
+
P1
I37732
1 23 4
5 67 8
±P1
05±1172
±
DIAGNOSTICS COMBUSTION TYPE POWER HEATER SYSTEM
AVENSIS REPAIR MANUAL (RM1018E)
1CHECK FUSE(PWR HTR)
(a)Remove the PWR HTR from the engine room J/B or R/B No.1.
(b)Check that the continuity exists of PWR HTR fuse. NGREPAIR OR REPLACE FUSE
OK
2INSPECT POWER HEATER ECU(+)
(a)Remove the power heater ECU with connectors being connected.
(b)Turn the ignition switch to ON.
(c)Measure the voltage between terminal º+º of the power heater ECU and body ground.
Standard: 10 to 14 V
NGREPAIR OR REPLACE WIRE HARNESS
OK
3CHECK HARNESS AND CONNECTOR(POWER HEATER ECU ± BODY GROUND)
(a)Check for an open or short circuit in harness and connec- tor between the power heater ECU and body ground
(See page 01±32).
NG REPAIR OR REPLACE WIRE HARNESS
OK
PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE

05C7X±01
I36096
Heater Pump Assy Alternator Assy
Heater Assy
Center J/B
Heater Switch Assy
Driver Side J/B

HTR Fuse
05±1168
± DIAGNOSTICSCOMBUSTION TYPE POWER HEATER SYSTEM
AVENSIS REPAIR MANUAL (RM1018E)
LOCATION

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

E32993
I36144
HR
A16A15
± DIAGNOSTICSAIR CONDITIONING SYSTEM
05±1147
AVENSIS REPAIR MANUAL (RM1018E)
INSPECTION PROCEDURE
1 CHECK FUSE(HTR FUSE)
(a) Remove the HTR fuse from the driver side J/B and engine room J/B.
(b) Check for the continuity of HTR fuse.
NG REPLACE FUSE
OK
2 INSPECT HEATER RELAY
(a) Check for the continuity between each pair of terminals of
cooler relay assy, as shown in the chart.
Standard:
Terminal No.Specified condition
No continuity
3 ± 5Less than 1

(When battery voltage applied to terminals 1 and 2)
Less than 1

3 ± 4No continuity
(When battery voltage applied to terminals 1 and 2)
1 ± 2Approx. 1.3 k

NG REPLACE HEATER RELAY
OK
3 CHECK HARNESS AND CONNECTOR(A/C AMPLIFIER ± BATTERY)
(a) Remove the A/C amplifier with connectors being con-
nected.
(b) Measure the voltage between terminal HR of A/C amplifi-
er and body ground when ignition switch is ON and OFF.
Standard:
Ignition switch positionBlower switch positionVoltage (V)
OFFOFF0
ONONBelow 1.0
ONOFF10 to 14
NG REPAIR OR REPLACE HARNESS OR
CONNECTOR
OK
PROCEED TO NEXT CIRCUIT INSPECTION SHOWN ON PROBLEM SYMPTOMS TABLE