2005 TOYOTA AVENSIS Circuit
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B00540
A75980
Disconnect Wire
from Terminal B
Generator
Voltmeter BatteryAmmeter
± STARTING & CHARGINGCHARGING SYSTEM (1AZ±FSE)
19±19
AVENSIS REPAIR MANUAL (RM1018E)
(b) Check that it fits properly in the ribbed grooves.
HINT:
Check with your hand to confirm that the belt has not slipped out
of the groove on the bottom of the pulley.
5. VISUALLY CHECK GENERATOR WIRING
(a) Check that the wiring is in good condition.
6. LISTEN FOR ABNORMAL NOISES FROM GENERATOR
(a) Check that there is no abnormal noise from the generator while the engine is running.
7. INSPECT CHARGE WARNING LIGHT CIRCUIT
(a) Turn the ignition switch ON. Check that the charge warning light comes on.
(b) Start the engine and check that the light goes off.
HINT:
If the light does not operate as specified, troubleshoot the charge warning light circuit.
8. INSPECT CHARGING CIRCUIT WITHOUT LOAD
(a) According to the following procedure, connect an amme-
ter and voltmeter as shown in the illustration.
(1) Disconnect the wire from terminal B of the generator
and connect it to the negative (±) lead of the amme-
ter.
(2) Connect the positive (+) lead of the ammeter to ter-
minal B of the generator
(3) Connect the positive (+) lead of the voltmeter to ter-
minal B of the generator.
(4) Ground the negative (±) lead of the voltmeter.
(b) Check the charging circuit.
(1) Keep the engine speed at 2,000 rpm, check the
reading on the ammeter and voltmeter.
Standard amperage: 10 A or less
Standard voltage: 12.9 to 14.9 V
HINT:
If the voltmeter reading is more than standard voltage, re-
place the voltage regulator.
If the voltmeter reading is less than the standard voltage,
check the voltage regulator and generator as follows:
9. INSPECT CHARGING CIRCUIT WITH LOAD
(a) Keep the engine speed at 2,000 rpm, turn on the high beam headlights and turn the heater blower
switch to the ºHIº position.
(b) Check the reading on the ammeter.
Standard amperage: 30 A or more
HINT:
If the ammeter reading is less than standard amperage, repair the generator.
If the battery is fully charged, the indication will sometimes be less than standard amperage.
Page 2482 of 5135
B00540
A75980
Disconnect Wire
from Terminal B
Generator
Voltmeter BatteryAmmeter 19±16
± STARTING & CHARGINGCHARGING SYSTEM (1AZ±FE)
AVENSIS REPAIR MANUAL (RM1018E)
(b) Check that it fits properly in the ribbed grooves.
HINT:
Check with your hand to confirm that the belt has not slipped out
of the groove on the bottom of the pulley.
5. VISUALLY CHECK GENERATOR WIRING
(a) Check that the wiring is in good condition.
6. LISTEN FOR ABNORMAL NOISES FROM GENERATOR
(a) Check that there is no abnormal noise from the generator while the engine is running.
7. INSPECT CHARGE WARNING LIGHT CIRCUIT
(a) Turn the ignition switch ON. Check that the charge warning light comes on.
(b) Start the engine and check that the light goes off.
HINT:
If the light does not operate as specified, troubleshoot the charge warning light circuit.
8. INSPECT CHARGING CIRCUIT WITHOUT LOAD
(a) According to the following procedure, connect an amme-
ter and voltmeter as shown in the illustration.
(1) Disconnect the wire from terminal B of the generator
and connect it to the negative (±) lead of the amme-
ter.
(2) Connect the positive (+) lead of the ammeter to ter-
minal B of the generator
(3) Connect the positive (+) lead of the voltmeter to ter-
minal B of the generator.
(4) Ground the negative (±) lead of the voltmeter.
(b) Check the charging circuit.
(1) Keep the engine speed at 2,000 rpm, check the
reading on the ammeter and voltmeter.
Standard amperage: 10 A or less
Standard voltage: 12.9 to 14.9 V
HINT:
If the voltmeter reading is more than standard voltage, re-
place the voltage regulator.
If the voltmeter reading is less than the standard voltage,
check the voltage regulator and generator as follows:
9. INSPECT CHARGING CIRCUIT WITH LOAD
(a) Keep the engine speed at 2,000 rpm, turn on the high beam headlights and turn the heater blower
switch to the ºHIº position.
(b) Check the reading on the ammeter.
Standard amperage: 30 A or more
HINT:
If the ammeter reading is less than standard amperage, repair the generator.
If the battery is fully charged, the indication will sometimes be less than standard amperage.
Page 2837 of 5135
550ZC±01
I35425
Dry Cell BatteryMPa
3.19
0.1 0.5 1.0 4.8 4.9 (V) (+) (±) 1
2
3
0.39
0
I35437
Wire Harness Side:
Connector ºBº Connector ºAº
±
HEATER & AIR CONDITIONER AIR CONDITIONING SYSTEM
55±3
AVENSIS REPAIR MANUAL (RM1018E)
ON±VEHICLE INSPECTION
1. INSPECT AIR CONDITIONER PRESSURE SENSOR
(a) Disconnect the pressure SW connector.
(b)Install the manifold gauge set (See page 55±38).
(c) Connect the positive (+) lead from the three 1.5 V dry cell
batteries to terminal 3 and negative (±) lead to terminal 1.
(d) Check the voltage between terminals 2 and 1 of pressure sensor.
Standard:
The voltage varies with on the refrigerant pressure as
shown in the chart.
2. INSPECT AIR CONDITIONING CONTROL ASSY
(a) Disconnect the connector from air conditioning control assy and inspect the connec\
tor on wire harness side, as shown in the table.
Symbols
(Terminal No.)ConditionSpecified condition
IG (B1) ± GND (B40)Ignition switch: LOCK ON0 10 to 14 V
+B (B2) ± GND (B40)Always10 to 14 V
GND (B40) ± Body groundAlwaysContinuity
If circuit is not as specified, try replacing the air conditioning control\
assy with a new one. If the circuit is not
as specified, inspect the circuits connected to the other parts.
Page 2838 of 5135
I36091
From Back Side:
Connector ºBº Connector ºAº 55±4
± HEATER & AIR CONDITIONERAIR CONDITIONING SYSTEM
AVENSIS REPAIR MANUAL (RM1018E)
(b) Connect the connector to air conditioning control assy and inspect wire harness side connector from
the back side, as shown in the table.
Symbols
(Terminal No.)ConditionSpecified condition
HI (A4)± GND (A1)Ignition switch ON
Turn blower dial: OFF HINo continuity Continuity
M2 (A5) ± GND (A1)Ignition switch: ON
Turn blower dial: OFF M2No continuity Continuity
M1 (A6) ± GND (A1)Ignition switch: ON
Turn blower dial: OFF M1No continuity Continuity
GND (A1) ± Body groundIgnition switch: ON
Turn blower dial: OFF LONo continuity Continuity
RDEFIN (B4) ±
GND (B40) (*1)
Ignition switch : ON
Rear DEF switch: ON10 to 14 V
S5±2 (B5) ± GND (B40)Ignition switch: ON5.0 V
S5±3 (B6) ± GND (B40)Ignition switch: ON5.0 V
S5 (B7) ± GND (B40)Ignition switch: ON5.0 V
MPX+ (B9) ± GND (B40)Communication circuit±
FRS (B10) ± GND (B40)Ignition switch: ON
R/F switch: RECIRCURATION FRESH10 to 14 0 V
REC (B11) ± GND (B40)Ignition switch: ON
R/F switch: FRESH RECIRCURATION10 to 14 0 V
AOD (B12) ± GND (B40)Ignition switch: ON
Mode control dial: DEF10 to 14 V
AOF (B13) ± GND (B40)Ignition switch: ON
Mode control dial: FACE10 to 14 V
MGV (B14) ±
GND (B40) (*2)
Start engine
Hot gas heater: Operate10 to 14 0 V
AMH (B15) ± GND (B40)Ignition switch: ON
Temperature control dial: MAX HOT10 to 14 V
AMC (B16) ± GND (B40)Ignition switch: ON
Temperature control dial: MAX COOL10 to 14 V
SOL+ (B17) ± GND (B40)Start engine
Compressor: OperatePulse generation
ILL+ (B21) ±
GND (B40)
Ignition switch: ON
Turn light control switch: OFF ON0 10 to 14 V
HOTGASIN (B22) ±
GND (B40) (*2)
Ignition switch: ON
Heater switch: ON10 to 14 V
CFAN (B23) ± GND (B40)Start engine
Condenser fan: operate10 to 14 0 V
RPTC1 (B28) ± GND (B40)PTC heater: OperateAbove 7.5 V
MPX± (B29) ± GND (B40)Communication circuit±
TE (B31) ± GND (B40)Evaporator temperature: 0C (32F) 15C (59F)2.0 to 2.4 1.4 to 1.8 V
Page 2839 of 5135
± HEATER & AIR CONDITIONERAIR CONDITIONING SYSTEM
55±5
AVENSIS REPAIR MANUAL (RM1018E)Symbols
(Terminal No.)Specified condition Condition
PRE (B32) ± GND (B40)Start engine
Refrigerant pressure: 0 Pa (0 kgf/cm2, 0 psi) 3,138 MPa (32.0 kgf/cm2, 455 psi)0.5 to 4.8 V
TPM (B33) ± GND (B40)Ignition switch: ON
Mode control dial: DEF FACE1 4 V
TP (B34) ± GND (B40)Ignition switch: ON
Temperature control dial: MAX HOT MAX COOL1 4 V
HRIN (B35) ± GND (B40)Ignition switch: ON
Front blower: OperateBelow 1.0 V
SG±2 (B36) ± Body groundAlwaysContinuity
SG±3 (B37) ± Body groundAlwaysContinuity
SG (B38) ± Body groundAlwaysContinuity
SG±4 (B39) ± Body groundAlwaysContinuity
GND (B40) ± Body groundAlwaysContinuity
PBLT (B24) ± GND (B40)Ignition switch: ON
Seat belt signal: OFF ON10 to 14 Below 1.0 V
PBKIG (B25) ± GND (B40)Ignition switch: ON
Parking brake switch: OFF ON10 to 14 Below 1.0 V
ALT (B26) ± GND (B40)Start enginePulse generation
(*1) Petrol only
(*2) Diesel (standard) only
If circuit is not as specified, try replacing the air conditioning control assy with a new one. If circuit is not as
specified, inspect the circuits connected to other parts.
Page 2916 of 5135
550ZI±01
I35437
Connector ºBº Wire harness side:
Connector ºAº
I36091
Connector ºBº From back side:
Connector ºAº 55±22
± HEATER & AIR CONDITIONERHOT GAS TYPE POWER HEATER SYSTEM
AVENSIS REPAIR MANUAL (RM1018E)
HOT GAS TYPE POWER HEATER SYSTEM
ON±VEHICLE INSPECTION
1. INSPECT AIR CONDITIONING CONTROL ASSY
(a) Disconnect the connector from air conditioning control assy and inspect the connector on wire harness
side, as shown in the table.
Symbols (Terminal No.)Wiring ColorConditionSTD Voltage (V)
SOL+ (B17) ±
GND (B40)R ± W±BStart engine
Compressor: OperatePulse generation
MGV (B14) ±
GND (B40) (*1)R±Y ± W±BStart engine
Compressor: OperatePulse generation
HOT GAS IN (B22) ±
GND (B40) (*1)R±Y ± W±BIG SW: ON
Hot Gas SW: ONBattery positive voltage
If circuit is not as specified, try replacing the air conditioning control assy with a new one. If the circuit is not
as specified, inspect the circuits connected to the other parts.
(b) Connect the connector to air conditioning control assy and inspect wire harness side connector from
the back side, as shown in the table.
Symbols (Terminal No.)ConditionSpecified condition
HI (A4) ± GND (A1)Ignition switch ON
Turn blower dial: OFF HINo continuity Continuity
M2 (A5) ± GND (A1)Ignition switch ON
Turn blower dial: OFF M2No continuity Continuity
M1 (A6) ± GND (A1)Ignition switch ON
Turn blower dial: OFF M1No continuity Continuity
GND (A1) ± Body groundIgnition switch ON
Turn blower dial: OFF LONo continuity Continuity
Page 2918 of 5135
I32394
1
2
I32395
Wire harness side: 55±20
± HEATER & AIR CONDITIONERCOMBUSTION TYPE POWER HEATER SYSTEM
AVENSIS REPAIR MANUAL (RM1018E)
(d) Inspect the flame sensor.
(1) Using an ohmmeter, measure the resistance be-
tween terminals 1 and 2 of heater wire.
Resistance: Refer to the graph
If the resistance is not as specified, replace the heater wire.
2. INSPECT HETER SWITCH ASSY
(a) Disconnect the connector from the power heater switch
and inspect the connector on the wire harness side, as
shown in the chart.
Tester connectionConditionSpecified condition
2 ± GroundConstantContinuity
4 ± GroundConstantContinuity
3 ± GroundTurn ignition switch ONBattery voltage
3 ± GroundTurn ignition switch OFFNo voltage
1 ± GroundTurn light control switch TAIL or HEADBattery voltage
1 ± GroundTurn light control switch OFFNo voltage
If the circuit is as specified, replace the power heat-
er switch.
If the circuit is not as specified, inspect the circuits
connected to other parts.
Page 2919 of 5135
I32396
From back side:
± HEATER & AIR CONDITIONERCOMBUSTION TYPE POWER HEATER SYSTEM
55±21
AVENSIS REPAIR MANUAL (RM1018E)
(b) Connect the connector to the power heater switch and in-
spect the connector from the back side, as shown in the
chart.
Tester connectionConditionSpecified condition
6 ± GroundTurn the ignition switch ON and power heater
switch ONBattery voltage
6 ± GroundTurn the ignition switch ON and power heater
switch OFFNo voltage
If the circuit is not as specified, replace the power
heater switch.