1999 TOYOTA AVENSIS ECU






I12758
Buner Motor
Glow Plug
Overheating Sensor
Temp. Sensor
Flame SensorBR
B
BR
W
R
L R
L
BR
L
Connector B14
7 135
6 3 9
8 1
Power
Heater
ECUR
BR
B–R
G
G–W
L
Y
B–WConnector A 8
2
51
3
6
47R
BR
GTerminal L
of AlternatorBattery
Metering Pump
SWIG
Vehicle Side
14 13 10 9 825 13 647
11 1 2
12Fuse (20 A) B–R
G–W AC–10
– AIR CONDITIONINGCOMBUSTION TYPE POWER HEATER
2. DESCRIPTION OF DISPLAY AND BUTTONS
AF: Current Value Malfunction (Blinking at current failure)
Diag: DTC (Example: 064 Flame sensor break)
Mamory 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
The ECU is able to store up to 5 pieces of faulty memory. If it is full, the new data is written over F5.
4. WIRING DIAGRAM
Wire colors are indicated by an alphabetical code.
B=Black W=White BR=Brown L=Blue R=Red G=Green Y=Yellow
The first letter insicates the basic wire color and the seconk letter indicates the color of the stripe.

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. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

ID–3ALPHABETICAL INDEX (S – W)
Page
SUPPLEMENTAL RESTRAINT SYSTEM
(SERVICE SPECIFICATIONS) SS–15. . . . . . . . . . . . . . . . . .
SUSPENSION AND AXLE (PREPARATION) PP–6. . . . . . . . .
SUSPENSION AND AXLE
(SERVICE SPECIFICATIONS) SS–9. . . . . . . . . . . . . . . . . .
T
TERMINALS OF ECU
(SUPPLEMENTAL RESTRAINT SYSTEM)
(DIAGNOSTICS) DI–6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
TERMS IN–34. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
TROUBLESHOOTING (E251) MX–1. . . . . . . . . . . . . . . . . . . . .
V
VACUUM PUMP (1CD–FTV) BR–2. . . . . . . . . . . . . . . . . . . . . .
VEHICLE IDENTIFICATION AND ENGINE SERIAL
NUMBER (IDENTIFICATION INFORMATION) IN–3. . . . .
VEHICLE LIFT AND SUPPORT LOCATIONS
(REPAIR INSTRUCTIONS) IN–7. . . . . . . . . . . . . . . . . . . . .
W
WATER TEMPERATURE SWITCH (1CD–FTV) AC–36. . . . . . .
WINDSHIELD BO–3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
WIRE HARNESS AND CONNECTOR RS–39. . . . . . . . . . . . . .