4100Y±05
±
MANUAL TRANSMISSION/TRANSAXLE MANUAL TRANSAXLE SYSTEM (MTM)
41±1
AVENSIS REPAIR MANUAL (RM1018E)
MANUAL TRANSAXLE SYSTEM (MTM)
PROBLEM SYMPTOMS TABLE
Use the table below to help find the cause of the problem. The numbers indi\
cate the likelihood of the possible
cause in descending order. Check each part in the order shown. Replace these parts as necessary.
: (C50 MANUAL TRANSAXLE Repair Manual Pub. No. 826E or C250 MANUAL TRANS\
AXLE Repair
Manual Pub. No. RM1020E or E354 MANUAL TRANSAXLE Repair Manual Pub. No. RM944E\
)
SymptomSuspect AreaSee page
Noise
6. Oil (Level low)
7. Oil (Wrong) C50/C250
E354/E357
8. Gear (Worn or damaged)
9. Bearing (Worn or damaged)41±2
41±3
41±5
Oil leakage
1. Oil (Level too high)
2. Gasket (Damaged)
3. Oil seal (Worn or damaged) C50/ C250 E354/E357
4. O±Ring (Worn or damaged)41±2
41±3
41±5
Hard to shift or will not shift
1. Control cable (Faulty)
2. Synchronizer ring (Worn or damaged)
3. Shift key spring (Damaged)41±7
Jumps out of gear
1. Locking ball spring (Damaged)
2. Shift fork (Worn)
3. Gear (Worn or damaged)
4. Bearing (Worn or damaged)
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.