1999 TOYOTA AVENSIS relay

IN0253
WRONG CORRECT
IN0252
WRONG CORRECT
IN0002
Example IN–6
– INTRODUCTIONREPAIR INSTRUCTIONS
(2) After the vehicle is jacked up, be sure to support it
on stands. It is extremely dangerous to do any work
on a vehicle raised on a jack alone, even for a small
job that can be finished quickly.
(l) Observe the following precautions to avoid damage to the
following parts:
(1) Do not open the cover or case of the ECU unless
absolutely necessary. (If the IC terminals are
touched, the IC may be destroyed by static electric-
ity.)
(2) To disconnect vacuum hoses, pull off the end, not
the middle of the hose.
(3) To pull apart electrical connectors, pull on the con-
nector itself, not the wires.
(4) Be careful not to drop electrical components, such
as sensors or relays. If they are dropped on a hard
floor, they should be replaced and not reused.
(5) When steam cleaning an engine, protect the elec-
tronic components, air filter and emission–related
components from water.
(6) Never use an impact wrench to remove or install
temperature switches or temperature sensors.
(7) When checking continuity at the wire connector, in-
sert the tester probe carefully to prevent terminals
from bending.
(8) When using a vacuum gauge, never force the hose
onto a connector that is too large. Use a step–down
adapter for adjustment. Once the hose has been
stretched, it may leak air.
(m) Installation and removal of vacuum hose:
(1) When disconnecting vacuum hoses, use tags to
identify where they should be reconnected to.
(2) After completing a job, double check that the vacu-
um hoses are properly connected. A label under the
hood shows the proper layout.
(n) Unless otherwise stated, all resistance is measured at an
ambient temperature of 20
C (68
F). Because the resis-
tance may be outside specifications if measured at high
temperatures immediately after the vehicle has been run-
ning, measurement should be made when the engine has
cooled down.

V07268
VIBRATION METHOD: When vibration seems to be the major cause.
CONNECTORS
WIRE HARNESS
PARTS AND SENSOR1
Slightly shake the connector vertically and horizontally.
Slightly shake the wire harness vertically and horizontally.
The connector joint, fulcrum of the vibration, and body
through portion are the major areas to be checked thorough-
ly.
Apply slight vibration with a finger to the part of the sensor
considered to be the problem cause and check that the mal-
function occurs.Shake Slightly
Swing Slightly
Vibrate Slightly
HINT:
Applying strong vibration to relays may result in open relays.
– INTRODUCTIONHOW TO TROUBLESHOOT ECU CONTROLLED
SYSTEMSIN–23
3. SYMPTOM SIMULATION
The most difficult case in troubleshooting is when there are no problem symptoms occurring. In such cases,
a thorough customer problem analysis must be carried out, then simulate the same or similar conditions and
environment in which the problem occurred in the customer’s vehicle. No matter how much experience a
technician has, or how skilled he or she may be, if he or she proceeds to troubleshoot without confirming
the problem symptoms he or she will tend to overlook something important in the repair operation and make
a wrong guess somewhere, which will only lead to a standstill. For example, for a problem which only occurs
when the engine is cold, or for a problem which occurs due to vibration caused by the road during driving,
etc., the problem can never be determined so long as the symptoms are confirmed with the engine hot condi-
tion or the vehicle at a standstill. Since vibration, heat or water penetration (moisture) is likely cause for prob-
lem which is difficult to reproduce, the symptom simulation tests introduced here are effective measures in
that the external causes are applied to the vehicle in a stopped condition.
Important Points in the Symptom Simulation Test:
In the symptom simulation test, the problem symptoms should of course be confirmed, but the problem area
or parts must also be found out. To do this, narrow down the possible problem circuits according to the symp-
toms before starting this test and connect a tester beforehand. After that, carry out the symptom simulation
test, judging whether the circuit being tested is defective or normal and also confirming the problem symp-
toms at the same time. Refer to the problem symptoms table for each system to narrow down the possible
causes of the symptom.

IN–36
– INTRODUCTIONTERMS
PKB
Parking Brake
PPSProgressive Power Steering
PSPower Steering
PTOPower Take–Off
RAMRandom Access Memory
R/BRelay Block
RBSRecirculating Ball Type Steering
R/FReinforcement
RFSRigid Front Suspension
RHRight–Hand
RHDRight–Hand Drive
RLYRelay
ROMRead Only Memory
RrRear
RRRear–Engine Rear–Wheel Drive
RRSRigid Rear Suspension
RWDRear–Wheel Drive
SDNSedan
SENSensor
SICSStarting Injection Control System
SPECSpecification
SRSSupplemental Restraint System
SSMSpecial Service Materials
SSTSpecial Service Tools
STDStandard
SWSwitch
SYSSystem
T/ATransaxle
TACHTachometer
TDCTop Dead Center
TEMP.Temperature
TEMSTOYOTA Electronic Modulated Suspension
TFTToyota Free–Tronic
T/MTransmission
TMCTOYOTA Motor Corporation
TRCTraction Control System
U/DUnderdrive
VENTVentilator
VINVehicle Identification Number
VSCVehicle Skid Control Vehicle Stability Control
VSVVacuum Switching Valve
w/With
WGNWagon
W/HWire Harness
w/oWithout
1stFirst

No.
AGround (Power)
Tacho Pick–UP Sensor
EFI ECU (3S–FE, 2C–TE Engine)
EGR (2C–T Engine)
Vehicle Speed Sensor
EFI ECU
Water Temperature Sender Gauge (2C–T Engine)
Ground (Engine)
Ground
Outside Temperature Sender Gauge
Ground (Fuel)
Fuel Sender Gauge
Ground (Power)
Ground (Speed)
Turn Signal Switch (Right)
Other Parts
Oil Level Warning Switch
O/D OFF Switch
ECT ECU (Gasoline Engine)
Fuel Filter Warning Switch (Diesel Engine)
Glow Plug Timer (Diesel Engine)
EFI ECU (Gasoline Engine)
ECT Pattern Select Switch
ABS ECU
Rear Fog Light Switch 1
3
5
6
7
8
9
10
11
12
14
15
17
18
19
21
22
23
24
25
26Wire Harness Side
1
2
3
4
5
6
7
9
11
13
14
15
16
17
18
19
20
22
24
26Turn Signal Switch (Left)
H–LP Fuse
Front Fog Light Switch
Alternator L Terminal
Brake Fluid Level Warning Switch
Parking Brake Switch
ECU+B Fuse
Taillight Relay
GAUGE Fuse
Ground (Signal)
DOOR Fuse
EFI ECU (Gasoline Engine)
EGR ECU (Diesel Engine)
Headlight Dimmer Switch
Low Oil Pressure Warning Switch
IGN Fuse
Door Courtesy Switch
Airbag ECU
Taillight Relay
GAUGE Fuse
Ground (Signal)
DOOR Fuse
B
– BODY ELECTRICALCOMBINATION METER
BE–5

AIR CONDITIONING
DRIVE BELT (1CD–FTV) AC–1. . . . . . . . . . . . . . . . . .
MANIFOLD GAUGE SET (1CD–FTV) AC–4. . . . . . .
REFRIGERANT LINE AC–6. . . . . . . . . . . . . . . . . . . . .
COMBUSTION TYPE POWER HEATER AC–9. . . .
ELECTRICAL TYPE POWER HEATER AC–23. . . . .
COMPRESSOR AND MAGNETIC CLUTCH
(1CD–FTV) AC–25. . . . . . . . . . . . . . . . . . . . . . . . . . . .
RELAY (1CD–FTV) AC–29. . . . . . . . . . . . . . . . . . . . . . .
CONDENSER FAN (1CD–FTV) AC–30. . . . . . . . . . . .
WATER TEMPERATURE SWITCH
(1CD–FTV) AC–36. . . . . . . . . . . . . . . . . . . . . . . . . . . .
REFER TO AVENSIS/CORONA REPAIR MANUAL FOR
CHASSIS AND BODY (Pub. No. RM599E)
NOTE: The above pages contain only the points which differ
from the above listed manual.

I12488
AC2AD–01
I12487
2 3
5 1
1 23 5
– AIR CONDITIONINGRELAY (1CD–FTV)
AC–29
RELAY (1CD–FTV)
INSPECTION
ELECTRICAL TYPE POWER HEATER
(a) Remove magnetic clutch relay (marking: HTR sub1,
sub2, sub3) from engine room relay block.
(b) Inspect magnetic clutch relay (marking: HTR sub1, sub2,
sub3) continuity.
ConditionTester connectionSpecified condition
Constant1 – 2Continuity
Apply B+ between
terminals 1 and 2.3 – 5Continuity
If continuity is not as specified, replace the relay.
(c) Reinstall relay to engine room relay block.

AC2AE–01
I05375
21
AC–30
– AIR CONDITIONINGCONDENSER FAN (1CD–FTV)
CONDENSER FAN (1CD–FTV)
ON–VEHICLE INSPECTION
1. INSPECT CONDENSER FAN OPERATION
Inspect the fan operation, as shown in the chart below.
Test conditions:

Ignition switch ON

Blower speed control dial at ”HI” position

Temperature control dial at ”COOL” position

Set on manifold gauge set

A/C switch ON
ConditionFan operation (Fan speed)
Engine coolant temperature
91C (196F) or belowNot rotate
Engine coolant temperature
100C (212F) or aboveRotate
Refrigerant pressure is less than
1,520 kPa (15.5 kgf/cm2, 220 psi)Rotate (Low speed)
Refrigerant pressure is 1,520 kPa
(15.5 kgf/cm2, 220 psi) or aboveRotate (High speed)
If operation is not as specified, proceed to the next inspection.
2. INSPECT CONDENSER FAN MOTOR OPERATION
(a) Disconnect the connector.
(b) Connect the battery and ammeter to fan connector, as
shown in the illustration.
(c) Check that the fan rotates smoothly and then check that
the reading on the ammeter.
Specified amperage:
9.5
1.5 A at 20C (68F)

If operation is not as specified, replace the fan mo-
tor.

If operation is as specified, check the pressure
switch, cooling fan relays and water temp. switch.

ID–2ALPHABETICAL INDEX (A – S)
A
Page
ABBREVIATIONS USED IN THIS MANUAL
(TERMS) IN–34. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
AIR CONDITIONING (PREPARATION) PP–22. . . . . . . . . . . . .
AIR CONDITIONING
(SERVICE SPECIFICATIONS) SS–19. . . . . . . . . . . . . . . . . .
B
BODY (PREPARATION) PP–20. . . . . . . . . . . . . . . . . . . . . . . . . .
BODY (SERVICE SPECIFICATIONS) SS–18. . . . . . . . . . . . . . .
BODY ELECTRICAL (PREPARATION) PP–19. . . . . . . . . . . . . .
BODY ELECTRICAL
(SERVICE SPECIFICATIONS) SS–16. . . . . . . . . . . . . . . . . .
BRAKE (PREPARATION) PP–11. . . . . . . . . . . . . . . . . . . . . . . . .
BRAKE (SERVICE SPECIFICATIONS) SS–11. . . . . . . . . . . . . .
BRAKE PEDAL BR–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
C
CIRCUIT INSPECTION
(SUPPLEMENTAL RESTRAINT SYSTEM)
(DIAGNOSTICS) DI–8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CLIP BO–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
COMBINATION METER BE–2. . . . . . . . . . . . . . . . . . . . . . . . . .
COMBUSTION TYPE POWER HEATER AC–9. . . . . . . . . . . .
COMPRESSOR AND MAGNETIC CLUTCH
(1CD–FTV) AC–25. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CONDENSER FAN (1CD–FTV) AC–30. . . . . . . . . . . . . . . . . . . .
CURTAIN SHIELD AIRBAG ASSEMBLY RS–20. . . . . . . . . . . .
D
DIAGNOSTIC TROUBLE CODE CHART
(SUPPLEMENTAL RESTRAINT SYSTEM)
(DIAGNOSTICS) DI–4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DIFFERENTIAL CASE (E251) MX–41. . . . . . . . . . . . . . . . . . . . .
DRIVE BELT SR–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DRIVE BELT (1CD–FTV) AC–1. . . . . . . . . . . . . . . . . . . . . . . . .
E
ELECTRICAL TYPE POWER HEATER AC–23. . . . . . . . . . . . .
F
FOG LIGHT SYSTEM BE–1. . . . . . . . . . . . . . . . . . . . . . . . . . . .
FOR ALL OF VEHICLES IN–9. . . . . . . . . . . . . . . . . . . . . . . . . .
FRONT DRIVE SHAFT SA–1. . . . . . . . . . . . . . . . . . . . . . . . . . .
G
GENERAL INFORMATION
(HOW TO TROUBLESHOOT ECU
CONTROLLED SYSTEMS) IN–18. . . . . . . . . . . . . . . . . . . . .
GENERAL INFORMATION
(HOW TO USE THIS MANUAL) IN–1. . . . . . . . . . . . . . . . .
GENERAL INFORMATION
(REPAIR INSTRUCTIONS) IN–4. . . . . . . . . . . . . . . . . . . . .
H
HOW TO PROCEED WITH TROUBLESHOOTING
(HOW TO TROUBLESHOOT ECU
CONTROLLED SYSTEMS) IN–19. . . . . . . . . . . . . . . . . . . . . Page
HOW TO TROUBLESHOOT ECU
CONTROLLED SYSTEMS IN–18. . . . . . . . . . . . . . . . . . . . . .
HOW TO USE THE DIAGNOSTIC CHART AND
INSPECTION PROCEDURE
(HOW TO TROUBLESHOOT ECU
CONTROLLED SYSTEMS) IN–29. . . . . . . . . . . . . . . . . . . . .
HOW TO USE THIS MANUAL IN–1. . . . . . . . . . . . . . . . . . . . .
I
IDENTIFICATION INFORMATION IN–3. . . . . . . . . . . . . . . . . .
INPUT SHAFT (E251) MX–23. . . . . . . . . . . . . . . . . . . . . . . . . . . .
INSTRUMENT PANEL BO–13. . . . . . . . . . . . . . . . . . . . . . . . . . . .
M
MANIFOLD GAUGE SET (1CD–FTV) AC–4. . . . . . . . . . . . . . .
MANUAL TRANSAXLE (E251)
(PREPARATION) PP–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
MANUAL TRANSAXLE (E251)
(SERVICE SPECIFICATIONS) SS–4. . . . . . . . . . . . . . . . . .
MANUAL TRANSAXLE ASSEMBLY (E251) MX–9. . . . . . . . . .
MANUAL TRANSAXLE UNIT (E251) MX–2. . . . . . . . . . . . . . . .
O
OIL PUMP (E251) MX–38. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
OUTPUT SHAFT (E251) MX–30. . . . . . . . . . . . . . . . . . . . . . . . . .
P
PARTS LOCATION
(SUPPLEMENTAL RESTRAINT SYSTEM)
(DIAGNOSTICS) DI–5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
POWER STEERING FLUID SR–3. . . . . . . . . . . . . . . . . . . . . . .
POWER STEERING VANE PUMP
(2C–T, 2C–TE, 1CD–FTV) SR–6. . . . . . . . . . . . . . . . . . . . . .
PRE–CHECK
(SUPPLEMENTAL RESTRAINT SYSTEM)
(DIAGNOSTICS) DI–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
PRECAUTION (FOR ALL OF VEHICLES) IN–9. . . . . . . . . . .
R
REFRIGERANT LINE AC–6. . . . . . . . . . . . . . . . . . . . . . . . . . . .
RELAY (1CD–FTV) AC–29. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
REPAIR INSTRUCTIONS IN–4. . . . . . . . . . . . . . . . . . . . . . . . .
ROOF HEADLINING (Liftback) BO–27. . . . . . . . . . . . . . . . . . . . .
ROOF HEADLINING (Sedan) BO–22. . . . . . . . . . . . . . . . . . . . . .
ROOF HEADLINING (Wagon) BO–32. . . . . . . . . . . . . . . . . . . . .
S
SHIFT AND SELECT LEVER SHAFT (E251) MX–40. . . . . . . . .
SHIFT LEVER AND CONTROL CABLE (E251) MX–48. . . . . . .
SIDE AIRBAG ASSEMBLY RS–9. . . . . . . . . . . . . . . . . . . . . . . .
SIDE AND CURTAIN SHIELD AIRBAG SENSOR
ASSEMBLY RS–34. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SLIDING ROOF BO–11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SRS AIRBAG RS–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
STANDARD BOLT (SERVICE SPECIFICATIONS) SS–1. . . .
STEERING (PREPARATION) PP–12. . . . . . . . . . . . . . . . . . . . . .
STEERING (SERVICE SPECIFICATIONS) SS–13. . . . . . . . . .
SUPPLEMENTAL RESTRAINT SYSTEM
(DIAGNOSTICS) DI–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SUPPLEMENTAL RESTRAINT SYSTEM
(PREPARATION) PP–16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .