2005 TOYOTA AVENSIS diagnostic

056II−05
//
How Often Does
Problem Occur?//
Automatic Transaxle
System Check SheetInspector’s
Name :
Customer’s Name
Date Vehicle
Brought In//km
mile
Date Problem
Occurred
ContinuousIntermittent ( times a day)
SymptomsNo up−shift (1st
2nd 2nd
3rd 3rd
4th 4th
5th)
Vehicle does not move ( Any position particular position)
No down−shift ( 5th
4th 4th
3rd 3rd
2nd 2nd
1st)
Lock−up malfunction
Shift point too high or too low
Harsh engagement ( N
D Lock−up Any drive position)
Slip or shudder
No kick−down
Others
DTC Check1st Time
2nd Time Check Item
Normal codeMalfunction code (DTC )
Normal codeMalfunction code (DTC )
Malfunction
Indicator LampNormal
Remains ON
VIN
Odometer Reading Production Date
Licence plate No.
− DIAGNOSTICSELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U151E)05−533
AVENSIS Supplement (RM1045E)
CUSTOMER PROBLEM ANALYSIS CHECK

056IH−05
05 −530−
DIAGNOSTICS ELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U 151E)
AVENSIS Supplement (RM 1045E)
HOW TO PROCEED WITH TROUBLESHOOTING
HINT:
S The ECM of this system is connected to the multiplex communication system. Therefore, before start-
ing troubleshooting, make sure to check that there is no trouble in the multiplex communication system.
S The hand −held tester can be used at steps 3, 4, 6, and 9.
1 Vehicle Brought to Workshop
2 Customer Problem Analysis (SEE PAGE 05 −533)
3 Connect the hand −held tester to DLC3
4 Check and Clear DTC and Freeze Frame Data (SEE PAGE 05 −557)
5 Visual Inspection
6 Setting the Check Mode Diagnosis (SEE PAGE 05 −558)
7 Problem Symptom Confirmation (SEE PAGE 05 −534)
Symptom does not occur: Go to step 8
Symptom occur: Go to step 9
8 Symptom Simulation (SEE PAGE 0 1− 22)
9 DTC Check (SEE PAGE 05 −557)
DTC is not output: Go to step 10
DTC is output: Go to step 17

−
DIAGNOSTICS ELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U 151E)05 −53 1
AVENSIS Supplement (RM 1045E)
10 Basic Inspection (See Pub. No. RM 1018E, page 40 −2, 40 −8 and 40 −69)
NG Go to step 19
OK
11 Mechanical System Test (SEE PAGE 05 −536)
NG Go to step 16
OK
1 2 Hydraulic Test (SEE PAGE 05 −538)
NG Go to step 16
OK
1 3 Manual Shifting Test (SEE PAGE 05 −540)
NG Go to step 15
OK
1 4 Problem Symptoms Table Chapter 1 (SEE PAGE 05 −545)
NG Go to step 18
OK
1 5 Problem Symptoms Table Chapter 2 (SEE PAGE 05 −545)
1 6 Part Inspection
Go to step 19
17 DTC Chart (SEE PAGE 05 −564)
1 8 Circuit Inspection

05−532− DIAGNOSTICSELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U151E)
AVENSIS Supplement (RM1045E)
19 Repair or Replace
20 Confirmation Test
End

05JL3−01
− DIAGNOSTICSELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U151E)05−529
AVENSIS Supplement (RM1045E)
SYSTEM DESCRIPTION
1. SYSTEM DESCRIPTION
(a) The ECT (Electronic controlled automatic transmission/transaxle) is an automatic transmission/trans-
axle that electronically controls shift timing using the ECM. The ECM detects electrical signals that indi-
cate engine and driving conditions, controls the shift point, and selects the appropriate shift pattern
based on driver habits and road conditions. As a result, fuel efficiency and power transmission/trans-
axle performance are improved.
Shift shock has been reduced by controlling the engine and transmission/transaxle simultaneously.
In addition, the ECT has the following features:
SDiagnostic function.
SFail−safe function when a malfunction occurs.

05CVL−02
−
DIAGNOSTICS ELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U 151E)05 −525
AVENSIS Supplement (RM 1045E)
ELECTRONIC CONTROLLED AUTOMATIC TRANSAXLE
[ECT] (U 151E)
PRECAUTION
NOTICE:
Perform the RESET MEMORY (AT initialization) when replacing the automatic transaxle assy, engine
assy or ECM (see page 05 −54 1).
HINT:
Initialization can not be completed by only disconnecting the battery terminal.

05−512
−
DIAGNOSTICS ECD SYSTEM (1CD −FTV)(From September, 2003)
AVENSIS Supplement (RM 1045E)
BLACK SMOKE
HINT:
Specified values in the following troubleshooting flowchart are the reference information.
Because of resultant values in DATA LIST vary depending on measuring conditions, or vehicle’s model
years. Do not judge the vehicle normal even if the DATA LIST values indicate a standard level. There is a
possibility that factors of the malfunction are hiding.
INSPECTION PROCEDURE
1 READ OUTPUT DTCS(RELATED TO ENGINE)
(a) Connect the hand −held tester to the DLC3.
(b) Turn the ignition switch to ON and turn the hand −held tester ON.
(c) Select the item ”DIAGNOSIS / OBD/MOBD / DTC INFO / CURRENT CODES”.
(d) Read DTCs. Result:
Display (DTC Output)Proceed to
Other than engine −related DTCs (See page 05 −266)A
DTCs related to the engine (See page 05 −299)B
B REPAIR OR REPLACE ENGINE CONTROL
SYSTEM ACCORDING TO DTC OUTPUT
(See page 05 −299)
A
2 READ VALUE OF HAND −HELD TESTER
(a) Connect the hand −held tester to the DLC3.
(b) Start the engine and push the hand −held tester ON.
(c) Select the item ”DIAGNOSIS / OBD/MOBD / DATA LIST / ALL / INJ VOLUME and INJ VOL FB # 1to
#4” and read its value displayed on the hand −held tester.
Standard:
ItemEngine Speed *Reference Value
INJ VOLUMEIdling (No engine load)3to 10mm3
INJ VOL FB # 1Idling (No engine load)−4.9 to 4.9 mm3
INJ VOL FB #2Idling (No engine load)−4.9 to 4.9 mm3
INJ VOL FB #3Idling (No engine load)−4.9 to 4.9 mm3
INJ VOL FB #4Idling (No engine load)−4.9 to 4.9 mm3
*: If no conditions are specifically stated for ”ldling”, it means the A/C switch is OFF and all accessory switches
are OFF.
NG Go to step11
OK
05I7Y −01

− DIAGNOSTICSECD SYSTEM (1CD−FTV)(From September, 2003)
05−513
AVENSIS Supplement (RM1045E)
3 PERFORM ENGINE RPM ACCELERATION
HINT:
If exhaust gas contain excessive black smoke, perform the following steps.
(a) Accelerate the engine speed up to the maximum RPM with no load 20 times.
(b) Check the volume of the black smoke in the exhaust gas.
Result:
ResultProceed to
Black smoke is fadedOK
Black smoke remains in the exhaust gasNG
HINT:
Deposited soot in the exhaust system is a source of the excessive black smoke.
NG Go to step 4
OK
END
4 CHECK AIR INTAKE SYSTEM AND EXHAUST SYSTEM
(a) Remove the air cleaner filter.
(b) Inspect the EGR valve operation.
(1) Start the engine and warm it up.
(2) Check that a clicking sound is heard from the EGR valve when the vacuum hose is disconnected
from EGR valve with the engine in an idle.
(c) Inspect the intake shutter (throttle valve) operation.
(1) Start the engine.
(2) Check if the intake shutter fully opens when accelerating the engine speed.
HINT:
Under quick accelerating of the engine speed, the EGR valve is fully closed and the intake shutter is fully
opened. If the systems are normal, the volume of the black smoke will result in decrease.
NG Go to step 5
OK
CHECK AND REPAIR LOCATION WHERE MALFUNCTION EXIST