2005 TOYOTA AVENSIS Service Repair Manual

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Page 4345 of 5135

TOYOTA AVENSIS 2005 Service Repair Manual − DIAGNOSTICSELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U151E)05−537
AVENSIS Supplement (RM1045E)
(b) Measure the time lag.
(1) When the shift lever is shifted while the engine is idling, th

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TOYOTA AVENSIS 2005 Service Repair Manual 05JL4−01
05 −534−
DIAGNOSTICS ELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U 151E)
AVENSIS Supplement (RM 1045E)
ROAD TEST
1. PROBLEM SYMPTOM CONFIRMATION
(a) Based on the result of the cus

05JL4−01
05 −534−
DIAGNOSTICS ELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U 151E)
AVENSIS Supplement (RM 1045E)
ROAD TEST
1. PROBLEM SYMPTOM CONFIRMATION
(a) Based on the result of the customer problem analysis, try to reproduce the symptoms. If the problem
is that the transaxle does not shift up, shift down, or the shift point is too high or too low, conduct the
following road test referring to the automatic shift schedule and simulate the problem symptoms.
2. ROAD TEST
NOTICE:
Perform the test at the ATF (Automatic Transmission Fluid) temperature 50 to 80 ˚C( 122 to 176 ˚F) in
the normal operation.
(a) D position test: Shift into the D position and fully depress the accelerator pedal and check the following points.
(1 ) Check up −shift operation.
Check that 1 2, 2 3, 3 4 and 4 5th up −shifts take place, and that the shift points conform
to the automatic shift schedule (see page 03 −33).
HINT:
5th Gear Up −shift Prohibition Control
S ATF temperature is −2 ˚C (28 ˚F ) or less.
5th and 4th Gear Lock −up Prohibition Control
S Brake pedal is depressed.
S Accelerator pedal is released.
S Engine coolant temperature is 60 ˚C( 140 ˚F) or less.
(2) Check for shift shock and slip. Check for shock and slip at the 1 2, 2 3, 3 4 and 4 5th up −shifts.
(3) Check for abnormal noise and vibration. Check for abnormal noise and vibration when up −shifting from 1 2, 2 3, 3 4 and 4 5
while driving with the shift lever in the D position, and check while driving in the lock −up condition.
HINT:
The check for the cause of abnormal noise and vibration must be done thoroughly as it could also be due
to loss of balance in the differential, torque converter clutch, etc.
(4) Check kick −down operation.
Check vehicle speeds when the 2nd to 1st, 3rd to 2nd, 4th to 3rd, and 5th to 4th kick −downs take
place while driving with the shift lever in the D position. Confirm that each speed is within the
applicable vehicle speed range indicated in the automatic shift schedule (see page 03 −33).
(5) Check for abnormal shock and slip at kick −down.
(6) Check the lock −up mechanism.
SDrive in D position (5th gear), at a steady speed (lock −up ON).
SLightly depress the accelerator pedal and check that the engine speed does not change
abruptly.
HINT:
SThere is no lock −up function in the 1st, 2nd and 3rd gear.
S4th lock −up operates while uphill −downhill control is active in the D position.
SIf there is a big jump in engine speed, there is no lock −up.

Page 4347 of 5135

TOYOTA AVENSIS 2005 Service Repair Manual − DIAGNOSTICSELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U151E)05−535
AVENSIS Supplement (RM1045E)
(b) S position test
Shift to the S position, depress the accelerator pedal and check the fol

− DIAGNOSTICSELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U151E)05−535
AVENSIS Supplement (RM1045E)
(b) S position test
Shift to the S position, depress the accelerator pedal and check the following points:
(1) Check shift operation.
SWhile driving in the D position and 5th gear, shift into the S position and back to the D posi-
tion. Check that the gear change 54 down−shift and 45up−shift can be performed.
SWith the shift lever in the S position (while the vehicle is stopped), shift into the ”+” position
to check that the shift position on the combination meter changes as follows:12, 2
3, 34 and 45.
SWhile driving in the 4(S) position and 4th gear (at a vehicle speed of approximately 40 to
50 km/h (25 to 31mph)), shift into the ”−” position and check if the 3rd gear down−shift oc-
curs and the engine brake performs properly.
SWhile driving in the 3(S) position and 3rd gear (at a vehicle speed of approximately 30 to
40 km/h (19 to 25 mph)), shift into the ”−” position and check if the 2nd gear down−shift
occurs and the engine brake performs properly.
SWhile driving in the 2(S) position and 2nd gear (at a vehicle speed of approximately 20 to
30 km/h (12to19 mph)), shift into the ”−” position and check if the1st gear down−shift oc-
curs and the engine brake performs properly.
HINT:
Manual shift (S position) is prohibited under either of the following conditions:
SDown−shifting may cause engine overrun.
SThe driver continuously down−shifts. (Down−shifting to1st gear may not be performed.)
(c) R position test:
Shift into the R position, lightly depress the accelerator pedal, and check that the vehicle moves back-
ward without any abnormal noise or vibration.
CAUTION:
Before conducting this test ensure that the test area is free from people and obstruction.
(d) P position test:
Stop the vehicle on a grade (more than 5˚) and after shifting into the P position, release the parking
brake. Then, check that the parking lock pawl holds the vehicle in place.
(e) Uphill/downhill control function test:
(1) Check that the gear does not up−shift to the 4th or 5th gear while the vehicle is driving uphill.
(2) Check that the gear automatically down−shifts from the 5th to 4th or from the 4th to 3rd gear when
brake is applied while the vehicle is driving downhill.

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TOYOTA AVENSIS 2005 Service Repair Manual 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

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TOYOTA AVENSIS 2005 Service Repair Manual 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 connec

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TOYOTA AVENSIS 2005 Service Repair Manual −
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

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TOYOTA AVENSIS 2005 Service Repair Manual 05−532− DIAGNOSTICSELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U151E)
AVENSIS Supplement (RM1045E)
19 Repair or Replace
20 Confirmation Test
End

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TOYOTA AVENSIS 2005 Service Repair Manual 05JL3−01
− DIAGNOSTICSELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U151E)05−529
AVENSIS Supplement (RM1045E)
SYSTEM DESCRIPTION
1. SYSTEM DESCRIPTION
(a) The ECT (Electronic controlled autom

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