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U151E AUTOMATIC TRANSAXLE – DIFFERENTIAL CASEAX–271
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6. INSTALL FRONT DIFFERENTIAL CASE REAR
TAPERED ROLLER BEARING
(a) Using SST and a press, install the front differential
case front tapered roller bearing to the differential
case.
SST 09316-12010, 09550-60010 (09951-00490),
09950-70010 (09951-07100, 09951-07150)
NOTICE:
Do not damage the bearing cage when installing
the bearing inner race.
(b) Using SST and a hammer, install the front
differential case tapered roller bearing rear outer
race to the transaxle housing.
SST 09950-70010 (09951-07100, 09951-07150),
09950-60020 (09951-00890)
NOTICE:
No clearance is allowed between the bearing
and transaxle housing.
7. ADJUST DIFFERENTIAL SIDE BEARING PRELOAD
(a) Install the differential assembly to the transaxle
case.
(b) Clean the mating surfaces of the transaxle case and
transaxle housing.
(c) Install the transaxle housing to the transaxle case
and tighten them with the 16 bolts.
Torque: Bolt A
25 N*m (255 kgf*cm, 18 ft.*lbf)
Bolt B
33 N*m (337 kgf*cm, 24 ft.*lbf)
Bolt C
29 N*m (295 kgf*cm, 21 ft.*lbf)
Bolt D
22 N*m (226 kgf*cm, 16.0 ft.*lbf)
HINT:
Apply seal packing or equivalent to bolts A and D.
Seal packing:
THREE BOND 2403 or equivalent
Bolt length:
Bolt A:
50 mm (1.969 in.)
Bolt B:
50 mm (1.969 in.)
Bolt C:
D026448E02
D026449E01
D026450E01
D026384E02
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AX–272U151E AUTOMATIC TRANSAXLE – DIFFERENTIAL CASE
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42 mm (1.654 in.)
Bolt D:
72 mm (2.835 in.)
HINT:
Usually, bolt A is non-reusable. In this case,
however, the bolt can be used after cleaning it.
(d) Using SST, turn the differential assembly to the right
and left 2 or 3 times to settle the bearing.
SST 09564-32011
(e) Using SST and a torque wrench, measure the
turning torque of the differential.
SST 09564-32011
Turning torque at 60 rpm:
New bearing:
0.20 to 0.69 N*m (2.0 to 7.0 kgf*cm, 1.8 to 6.1
in.*lbf)
Used bearing:
0.10 to 0.35 N*m (1.0 to 3.6 kgf*cm, 0.9 to 3.1
in.*lbf)
HINT:
If the turning torque is not as specified, refer to the
table below to select a thrust washer so that the
specified value is achieved.
Flange thickness: mm (in.)
(f) Remove the 16 bolts and the transaxle housing.
D025604E01
Mark Thickness Mark Thickness
0 2.00 (0.0787) 9 2.45 (0.0965)
1 2.05 (0.0807) A 2.50 (0.0984)
2 2.10 (0.0827) B 2.55 (0.1004)
3 2.15 (0.0846) C 2.60 (0.1024)
4 2.20 (0.0866) D 2.65 (0.1043)
5 2.25 (0.0886) E 2.70 (0.1063)
6 2.30 (0.0906) F 2.75 (0.1083)
7 2.35 (0.0925) G 2.80 (0.1102)
8 2.40 (0.0945) H 2.85 (0.1122)
D026384
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U151E AUTOMATIC TRANSAXLE – DIFFERENTIAL CASEAX–273
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(g) Remove the differential assembly.
8. INSTALL FRONT DIFFERENTIAL RING GEAR
(a) Using ATF and heater, heat the front differential ring
gear to 90 to 110
C (194.0 to 230.0F).
NOTICE:
Do not heat the ring gear to more than 110
C
(230.0
F).
(b) Clean the contact surface of the front differential
case.
(c) Align the matchmarks, and install the front
differential ring gear case quickly.
NOTICE:
Do not install the bolts while the ring gear is hot.
(d) Tighten the 14 bolts.
Torque: 95.0 N*m (970 kgf*cm, 70 ft.*lbf)
NOTICE:
Tighten the bolts a little at a time in a diagonal
pattern.
9. INSTALL TRANSAXLE HOUSING OIL SEAL
(a) Using SST and a hammer, install a new oil seal.
SST 09223-15020, 09950-70010 (09951-07150)
(b) Coat the lip of oil seal with a little MP grease.
Oil seal installation depth:
0 +- 0.5 mm (0 +- 0.0197 in.)
D026450E04
D025215E02
D026445E04
D026446
D026451E01
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AX–274U151E AUTOMATIC TRANSAXLE – DIFFERENTIAL CASE
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10. INSTALL DIFFERENTIAL SIDE BEARING RETAINER
OIL SEAL
(a) Using SST and a hammer, install a new oil seal.
SST 09710-30050, 09950-70010 (09951-07150)
(b) Coat the lip of the oil seal with a little MP grease.
Oil seal installation depth:
0 +- 0.5 mm (0 +- 0.0197 in.)
D025606E01
Page 1685 of 3000
U151F AUTOMATIC TRANSAXLE – AUTOMATIC TRANSAXLE SYSTEMAX–5
AX
SYSTEM DIAGRAM
The configuration of the electronic control system in the
U151F automatic transaxles is as shown in the following
chart.
C160130E02
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AX–6U151F AUTOMATIC TRANSAXLE – AUTOMATIC TRANSAXLE SYSTEM
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SYSTEM DESCRIPTION
1. SYSTEM DESCRIPTION
(a) The ECT (Electronic controlled automatic
transmission/transaxle) is an automatic
transmission/transaxle that electronically controls
shift timing using the ECM. The ECM detects
electrical signals that indicate engine and driving
conditions, and controls the shift point, based on
driver habits and road conditions. As a result, fuel
efficiency and power transmission performance are
improved.
Shift shock has been reduced by controlling the
engine and transmission simultaneously.
In addition, the ECT has features such as follows:
• Diagnostic function.
• Fail-safe function when a malfunction occurs.
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U151F AUTOMATIC TRANSAXLE – AUTOMATIC TRANSAXLE SYSTEMAX–7
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HOW TO PROCEED WITH
TROUBLESHOOTING
HINT:
• The ECM of this system is connected to the CAN and
multiplex communication system. Therefore, before
starting troubleshooting, make sure to check that there is
no trouble in the CAN and multiplex communication
systems.
• The intelligent tester can be used at steps 3, 4, 6, and 9.
NEXT
NEXT
NEXT
HINT:
(See page AX-27).
NEXT
NEXT
HINT:
(See page AX-28).
NEXT
HINT:
(See page AX-9).
1Vehicle Brought to Workshop
2Customer Problem Analysis
3Connect the OBD II scan tool or intelligent tester to DLC3
4Check and Clear DTCs and Freeze Frame Data
5Visual Inspection
6Setting the Check Mode Diagnosis
7Problem Symptom Confirmation
Symptom does not occur: Go to step 8
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AX–8U151F AUTOMATIC TRANSAXLE – AUTOMATIC TRANSAXLE SYSTEM
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HINT:
(See page IN-35).
NEXT
HINT:
(See page AX-27).
HINT:
(See page AX-127, AX-123 and AX-148).
NG
OK
HINT:
(See page AX-12).
NG
OK
HINT:
(See page AX-14).
NG
OK
HINT:
(See page AX-15).
NGSymptom occurs: Go to step 9
8Symptom Simulation
9DTC Check
DTC is not output: Go to step 10
DTC is output: Go to step 17
10Basic Inspection
Go to step 19
11Mechanical System Test
Go to step 16
12Hydraulic Test
Go to step 16
13Manual Shifting Test
Go to step 15