2005 TOYOTA AVENSIS Circuit

I33908
1
2
I37731
A16
TSD
TSP S5±4
1 23 45 67 89101112
13141516171819202123 2224
05±1114
±
DIAGNOSTICS AIR CONDITIONING SYSTEM
AVENSIS REPAIR MANUAL (RM1018E)
INSPECTION PROCEDURE
1INSPECT COOLER (SOLAR SENSOR) THERMISTOR
(a)Remove cooler (solar sensor) thermistor.
(b)Cover the sensor with a cloth, and check the cooler (solar sensor) thermistor resistance.
(1)Measure resistance between terminals 1 and 2 of
the cooler (solar sensor) thermistor.
Resistance:

(No continuity)
HINT:
Connect the ohmmter positive (+) lead to terminal 2 and the
ohmmeter negative (±) lead to terminal 1 of the cooler (solar
sensor) thermistor.
(c)Remove the cloth from the cooler (solar sensor) thermis- tor, and subject the sensor to the electric light and check
the cooler (solar sensor) thermistor resistance.
(1)Measure resistance between terminal 1 and 2 of the
cooler (solar sensor) thermistor.
Resistance: Approx. 10 k
(Continuity)
HINT:
Connect the positive (+) lead to ohmmeter to terminal 2 and
negative (±) lead to terminal 1 of the cooler (solar sensor)
thermistor.
NGREPLACE COOLER (SOLAR SENSOR) THERMISTOR
OK
2CHECK HARNESS AND CONNECTOR(COOLER (SOLAR SENSOR) THERMISTOR ± A/C AMPLIFIER)
(a)Check for an open or short circuit in harness and connec-
tor between solar sensor and A/C amplifier
(See page 01±32).
NG REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

± DIAGNOSTICSAIR CONDITIONING SYSTEM
05±1115
AVENSIS REPAIR MANUAL (RM1018E)
3 READ OUTPUT DTC
(a) Clear the DTCs.
(b) Read the DTC at least 8.5 minutes after turning the ignition switch ON.
Standard: Normal codes are output
NG REPLACE AIR CONDITIONING AMPLIFIER
OK
PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE

I35373
A/C Control Assembly
16
A15 SG±4 W±G
1 A19
A/C Thermistor
2B10
A16 TE
± DIAGNOSTICSAIR CONDITIONING SYSTEM
05±1109
AVENSIS REPAIR MANUAL (RM1018E)
DTC 13 EVAPORATOR TEMPERATURE SENSOR
CIRCUIT
CIRCUIT DESCRIPTION
This sensor detects the temperature inside the cooling unit and sends the appropriate signals to the A/C
amplifier.
DTC No.Detection ItemTrouble Area

Cooler thermistor No.1 (evaporator temp. sensor)
13Open or short in evaporator temperature sensor circuit.
()

Harness or connector between cooler thermistor No.1 (evap-
orator tempsensor) and A/C amplifier assyorator temp. sensor) and A/C amplifier assy

A/C amplifier assy
WIRING DIAGRAM
050TN±10

I36144
TESG±4
A16A15
05±1110
± DIAGNOSTICSAIR CONDITIONING SYSTEM
AVENSIS REPAIR MANUAL (RM1018E)
INSPECTION PROCEDURE
1 INSPECT AIR CONDITIONING AMPLIFIER(TE ± SG±4)
(a) Remove the A/C amplifier with connectors being con-
nected.
(b) Turn the ignition switch to ON.
(c) Measure the voltage between terminal TE and SG±4 of
A/C amplifier connector at each temperature.
Standard:
2.0 to 2.4 V at 0
C (32
F)
1.4 to 1.8 V at 15
C (59
F)
OK PROCEED TO NEXT CIRCUIT INSPECTION
SHOWN ON PROBLEM SYMPTOMS TABLE
NG



E50650
I30156
Resistance (k
)
Temperature (
C)
±
DIAGNOSTICS AIR CONDITIONING SYSTEM
05±1111
AVENSIS REPAIR MANUAL (RM1018E)
2INSPECT COOLER THERMISTOR NO.1
(a)Remove the cooler thermistor No.1 (evaporator temp.
sensor).
(b)Check the resistance between terminal 1 and 2 of cooler thermistor No.1 (evaporator temp. sensor) at each tem-
perature, as shown in the chart.
Standard: 1,500
at 25
C (77
F)
HINT:
As the temperature increases, the resistance decreases.
NGREPLACE COOLER THERMISTOR NO.1
OK
3CHECK HARNESS AND CONNECTOR(COOLER THERMISTOR NO.1 ± A/C AMPLIFIER)
(a)Check for an open or short circuit in harness and connector between term\
inal TE and SG±4 of A/C
amplifier (See page 01±32).
NG REPAIR OR REPLACE HARNESS ORCONNECTOR
OK

I35374
C10P±B
22 1
IC1
A1 A/C Ambient Temp. SensorA15 MPX±A/C Control Assembly Combination Meter
*1: 1CD±FTV
*2: 1AZ±FSE
*3: 1AZ±FE, 1ZZ±FE, 3ZZ±FEIC1 P±B P P10 20
11 I14
Integration Relay
C10P
E9A15 MPX+ 20
E1018 Engine and ECT ECU (A/T)Engine ECU (M/T)
(*2) (*1)E921
E1029
(*2) (*1) 14
10 13
P±B
C10W
IE14 12
W
21
C10W±R
IE115 11
W±R MPX2 MPX1
MPX2 MPX1 23
E9
(*3)29
E9
(*3) 05±1106
± DIAGNOSTICSAIR CONDITIONING SYSTEM
AVENSIS REPAIR MANUAL (RM1018E)
DTC 12 AMBIENT TEMPERATURE SENSOR CIRCUIT
CIRCUIT DESCRIPTION
This sensor detects the temperature outside the cabin and sends the appropriate signals to the A/C amplifier.
DTC No.Detection itemTrouble Area
12Open or short in ambient temperature sensor circuit

Thermistor assy (ambient temp. sensor)

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

Combination meter

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

A/C amplifier assy
WIRING DIAGRAM
05C7L±01

05±1108
± DIAGNOSTICSAIR CONDITIONING SYSTEM
AVENSIS REPAIR MANUAL (RM1018E)
2 CHECK HARNESS AND CONNECTOR(COMBINATION METER ± OUTER AMBIENT
TEMPERATURE SENSOR)
(a) Disconnect the connector from ambient temp. sensor.
(b) Check continuity between the terminal C10±11 (12) of combination meter assy and the terminal A1±1
(2) of ambient temp. sensor connector.
Standard: Continuity
NG REPAIR OR REPLACE HARNESS AND
CONNECTOR
OK
3 READ OUTPUT DTC
(a) Clear the DTCs.
(b) Read the DTC at least 8.5 minutes after turning the ignition switch ON.
Standard: Normal codes are output.
NG REPLACE OUTER AMBIENT TEMPERATURE
SENSOR
OK
PROCEED TO NEXT CIRCUIT INSPECTION SHOWN ON PROBLEM SYMPTOMS TABLE

I35373
A/C Control Assembly
22
6 A16 TR
SG±5 GR
G
12 A17
A/C Room Temp. Sensor
A16 05±1102
± DIAGNOSTICSAIR CONDITIONING SYSTEM
AVENSIS REPAIR MANUAL (RM1018E)
DTC 11 ROOM TEMPERATURE SENSOR CIRCUIT
CIRCUIT DESCRIPTION
This sensor detects the temperature inside the cabin and sends the appreciate signals to the A/C amplifier.
DTC No.Detection itemTrouble Area
11Open or short in room temperature sensor circuit

Cooler thermistor (room temp. sensor)

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

A/C amplifier assy
WIRING DIAGRAM
05A7M±02